Initial commit.

.gitignore

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+libraries/

A1/.gitignore

@@ -0,0 +1 @@
+build/

A1/CMakeLists.txt

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+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(A1)
+
+# Is this the solution?
+# Override with `cmake -DSOL=ON ..`
+OPTION(SOL "Solution" OFF)
+
+# Use glob to get the list of all source files.
+# We don't really need to include header and resource files to build, but it's
+# nice to have them also show up in IDEs.
+IF(${SOL})
+	FILE(GLOB_RECURSE SOURCES "src0/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src0/*.h")
+ELSE()
+	FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src/*.h")
+ENDIF()
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS})
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+ENDIF()

A1/README.txt

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+1) Alexander Huddleston
+
+2) The last coloring mode goes from blue to green, top to bottom respectively.
+
+3) http://www.mathopenref.com/coordtrianglearea.html
+
+4) This was written and compiled on Arch Linux on a 64-bit machine. There should not be any errors when run on another machine, but I am making note here just in case.

A1/resources/sphere.obj

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+####
+#
+#	OBJ File Generated by LightWave3D
+#	LightWave3D OBJ Export v2.2
+#
+####
+#
+#	                Vertices: 62
+#	                  Points: 0
+#	                   Lines: 0
+#	                   Faces: 120
+#	               Materials: 1
+#
+####
+
+#	             Vertex list
+
+v 0 -0.5 -0
+v 0.25 -0.433013 -0
+v 0.216506 -0.433013 -0.125
+v 0.125 -0.433013 -0.216506
+v 0 -0.433013 -0.25
+v -0.125 -0.433013 -0.216506
+v -0.216506 -0.433013 -0.125
+v -0.25 -0.433013 -0
+v -0.216506 -0.433013 0.125
+v -0.125 -0.433013 0.216506
+v 0 -0.433013 0.25
+v 0.125 -0.433013 0.216506
+v 0.216506 -0.433013 0.125
+v 0.433013 -0.25 -0
+v 0.375 -0.25 -0.216506
+v 0.216506 -0.25 -0.375
+v 0 -0.25 -0.433013
+v -0.216506 -0.25 -0.375
+v -0.375 -0.25 -0.216506
+v -0.433013 -0.25 -0
+v -0.375 -0.25 0.216506
+v -0.216506 -0.25 0.375
+v 0 -0.25 0.433013
+v 0.216506 -0.25 0.375
+v 0.375 -0.25 0.216506
+v 0.5 2.55171e-12 -0
+v 0.433013 2.55171e-12 -0.25
+v 0.25 2.55171e-12 -0.433013
+v 0 2.55171e-12 -0.5
+v -0.25 2.55171e-12 -0.433013
+v -0.433013 2.55171e-12 -0.25
+v -0.5 2.55171e-12 -0
+v -0.433013 2.55171e-12 0.25
+v -0.25 2.55171e-12 0.433013
+v 0 2.55171e-12 0.5
+v 0.25 2.55171e-12 0.433013
+v 0.433013 2.55171e-12 0.25
+v 0.433013 0.25 -0
+v 0.375 0.25 -0.216506
+v 0.216506 0.25 -0.375
+v 0 0.25 -0.433013
+v -0.216506 0.25 -0.375
+v -0.375 0.25 -0.216506
+v -0.433013 0.25 -0
+v -0.375 0.25 0.216506
+v -0.216506 0.25 0.375
+v 0 0.25 0.433013
+v 0.216506 0.25 0.375
+v 0.375 0.25 0.216506
+v 0.25 0.433013 -0
+v 0.216506 0.433013 -0.125
+v 0.125 0.433013 -0.216506
+v 0 0.433013 -0.25
+v -0.125 0.433013 -0.216506
+v -0.216506 0.433013 -0.125
+v -0.25 0.433013 -0
+v -0.216506 0.433013 0.125
+v -0.125 0.433013 0.216506
+v 0 0.433013 0.25
+v 0.125 0.433013 0.216506
+v 0.216506 0.433013 0.125
+v 5.10341e-12 0.5 -0
+
+#	    Face list
+
+f 3 2 1
+f 4 3 1
+f 5 4 1
+f 6 5 1
+f 7 6 1
+f 8 7 1
+f 9 8 1
+f 10 9 1
+f 11 10 1
+f 12 11 1
+f 13 12 1
+f 2 13 1
+f 3 14 2
+f 15 14 3
+f 4 15 3
+f 16 15 4
+f 17 16 4
+f 5 17 4
+f 17 5 6
+f 18 17 6
+f 18 6 7
+f 19 18 7
+f 20 7 8
+f 20 19 7
+f 20 8 9
+f 21 20 9
+f 21 9 10
+f 22 21 10
+f 23 10 11
+f 23 22 10
+f 12 23 11
+f 24 23 12
+f 13 24 12
+f 25 24 13
+f 14 25 13
+f 2 14 13
+f 15 26 14
+f 27 26 15
+f 28 27 15
+f 16 28 15
+f 29 28 16
+f 17 29 16
+f 29 17 18
+f 30 29 18
+f 31 18 19
+f 31 30 18
+f 32 19 20
+f 32 31 19
+f 32 20 21
+f 33 32 21
+f 34 21 22
+f 34 33 21
+f 35 22 23
+f 35 34 22
+f 24 35 23
+f 36 35 24
+f 37 36 24
+f 25 37 24
+f 26 37 25
+f 14 26 25
+f 39 38 26
+f 27 39 26
+f 28 39 27
+f 40 39 28
+f 29 40 28
+f 41 40 29
+f 42 29 30
+f 42 41 29
+f 43 30 31
+f 43 42 30
+f 43 31 32
+f 44 43 32
+f 45 32 33
+f 45 44 32
+f 45 33 34
+f 46 45 34
+f 46 34 35
+f 47 46 35
+f 48 47 35
+f 36 48 35
+f 49 48 36
+f 37 49 36
+f 26 49 37
+f 38 49 26
+f 39 50 38
+f 51 50 39
+f 40 51 39
+f 52 51 40
+f 53 52 40
+f 41 53 40
+f 53 41 42
+f 54 53 42
+f 55 42 43
+f 55 54 42
+f 56 43 44
+f 56 55 43
+f 56 44 45
+f 57 56 45
+f 58 45 46
+f 58 57 45
+f 58 46 47
+f 59 58 47
+f 60 59 47
+f 48 60 47
+f 49 60 48
+f 61 60 49
+f 50 61 49
+f 38 50 49
+f 51 62 50
+f 52 62 51
+f 53 62 52
+f 62 53 54
+f 62 54 55
+f 62 55 56
+f 62 56 57
+f 62 57 58
+f 62 58 59
+f 60 62 59
+f 61 62 60
+f 50 62 61
+
+#	             End of file

A1/resources/tri.obj

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+v 0 0 0
+v 10 0 0
+v 5 5 5
+f 1 2 3

A1/resources/tri2.obj

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+v 0 0 0
+v 10 0 0
+v 5 5 5
+v 0 5 0
+v 5 0 5
+v 10 5 0
+f 1 2 3
+f 4 5 6

A1/shadow8t4/shadow8t4/CMakeLists.txt

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+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(A1)
+
+# Is this the solution?
+# Override with `cmake -DSOL=ON ..`
+OPTION(SOL "Solution" OFF)
+
+# Use glob to get the list of all source files.
+# We don't really need to include header and resource files to build, but it's
+# nice to have them also show up in IDEs.
+IF(${SOL})
+	FILE(GLOB_RECURSE SOURCES "src0/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src0/*.h")
+ELSE()
+	FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src/*.h")
+ENDIF()
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS})
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+ENDIF()

A1/shadow8t4/shadow8t4/README.txt

@@ -0,0 +1,7 @@
+1) Alexander Huddleston
+
+2) The last coloring mode goes from blue to green, top to bottom respectively.
+
+3) http://www.mathopenref.com/coordtrianglearea.html
+
+4) This was written and compiled on Arch Linux on a 64-bit machine. There should not be any errors when run on another machine, but I am making note here just in case.

A1/shadow8t4/shadow8t4/src/Image.cpp

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+#include <iostream>
+#include <cassert>
+#include "Image.h"
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+
+using namespace std;
+
+Image::Image(int w, int h) :
+	width(w),
+	height(h),
+	comp(3),
+	pixels(width*height*comp, 0)
+{
+}
+
+Image::~Image()
+{
+}
+
+void Image::setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b)
+{
+	// The pixel data is laid out row by row. Each row consists of 'width'
+	// columns, and each column consists of 3 unsigned chars.
+
+	// First check for bounds
+	if(y < 0 || y >= height) {
+		cout << "Row " << y << " is out of bounds" << endl;
+		return;
+	}
+	if(x < 0 || x >= width) {
+		cout << "Col " << x << " is out of bounds" << endl;
+		return;
+	}
+
+	// Since the origin (0, 0) of the image is the upper left corner, we need
+	// to flip the row to make the origin be the lower left corner.
+	y = height - y - 1;
+	// index corresponding to row and col, (assuming single component image)
+	int index = y*width + x;
+	// Multiply by 3 to get the index for the rgb components.
+	assert(index >= 0);
+	assert(3*index + 2 < (int)pixels.size());
+	pixels[3*index + 0] = r;
+	pixels[3*index + 1] = g;
+	pixels[3*index + 2] = b;
+}
+
+void Image::writeToFile(const string &filename)
+{
+	// The distance in bytes from the first byte of a row of pixels to the
+	// first byte of the next row of pixels
+	int stride_in_bytes = width*comp*sizeof(unsigned char);
+	int rc = stbi_write_png(filename.c_str(), width, height, comp, &pixels[0], stride_in_bytes);
+	if(rc) {
+		cout << "Wrote to " << filename << endl;
+	} else {
+		cout << "Couldn't write to " << filename << endl;
+	}
+}

A1/shadow8t4/shadow8t4/src/Image.h

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+#pragma once
+#ifndef _IMAGE_H_
+#define _IMAGE_H_
+
+#include <string>
+#include <vector>
+
+class Image
+{
+public:
+	Image(int width, int height);
+	virtual ~Image();
+	void setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b);
+	void writeToFile(const std::string &filename);
+	int getWidth() const { return width; }
+	int getHeight() const { return height; }
+
+private:
+	int width;
+	int height;
+	int comp;
+	std::vector<unsigned char> pixels;
+};
+
+#endif

A1/shadow8t4/shadow8t4/src/Triangle.cpp

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+#include "Triangle.h"
+
+using namespace std;
+
+Tri::Tri()
+{
+        vertex v1;
+        v1.x = 0.0;
+        v1.y = 0.0;
+        v1.z = 0.0;
+        vertex v2;
+        v2.x = 0.0;
+        v2.y = 0.0;
+        v2.z = 0.0;
+        vertex v3;
+        v3.x = 0.0;
+        v3.y = 0.0;
+        v3.z = 0.0;
+        v.push_back(v1);
+        v.push_back(v2);
+        v.push_back(v3);
+        xmin = 0;
+        xmax = 0;
+        ymin = 0;
+        ymax = 0;
+        area = 0.0;
+}
+
+float findArea(vertex &one, vertex &two, vertex &three)
+{
+        return abs(one.x*two.y + two.x*three.y + three.x*one.y - one.y*two.x - two.y*three.x - three.y*one.x)/2.0;
+}
+
+Tri::Tri(vertex &one, vertex &two, vertex &three)
+{
+        v.push_back(one);
+        v.push_back(two);
+        v.push_back(three);
+        xmin = one.x;
+        xmax = one.x;
+        ymin = one.y;
+        ymax = one.y;
+        area = findArea(one, two, three);
+}
+

A1/shadow8t4/shadow8t4/src/Triangle.h

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+#pragma once
+#ifndef _TRIANGLE_H_
+#define _TRIANGLE_H_
+
+#include <string>
+#include <cmath>
+#include <vector>
+
+struct vertex
+{
+        float x = 0.0;
+        float y = 0.0;
+        float z = 0.0;
+        float r = 0.0;
+        float g = 0.0;
+        float b = 0.0;
+};
+ 
+class Tri
+{
+        public:
+          Tri();
+          Tri(vertex &one, vertex &two, vertex &three);
+          std::vector<vertex> v;
+          float xmin;
+          float xmax;
+          float ymin;
+          float ymax;
+          float area;
+};
+
+float findArea(vertex &one, vertex &two, vertex &three);
+
+#endif

A1/shadow8t4/shadow8t4/src/main.cpp

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+#include <iostream>
+#include <string>
+#include <memory>
+#include <stdlib.h>
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "tiny_obj_loader.h"
+
+#include "Image.h"
+#include "Triangle.h"
+
+// This allows you to skip the `std::` in front of C++ standard library
+// functions. You can also say `using std::cout` to be more selective.
+// You should never do this in a header file.
+using namespace std;
+
+int main(int argc, char **argv)
+{
+	if(argc < 6) {
+		cout << "Usage: A1 meshfile image width height colormode" << endl;
+		return 0;
+	}
+
+  srand(743298);
+	string meshName(argv[1]);
+  string filename(argv[2]);
+  int width = atoi(argv[3]);
+  int height = atoi(argv[4]);
+  int colormode = atoi(argv[5]);
+
+	// Load geometry
+	vector<float> posBuf; // list of vertex positions
+	
+  tinyobj::attrib_t attrib;
+	std::vector<tinyobj::shape_t> shapes;
+	std::vector<tinyobj::material_t> materials;
+	string errStr;
+	
+  bool rc = tinyobj::LoadObj(&attrib, &shapes, &materials, &errStr, meshName.c_str());
+	
+  if(!rc) {
+		cerr << errStr << endl;
+	} else {
+		// Some OBJ files have different indices for vertex positions, normals,
+		// and texture coordinates. For example, a cube corner vertex may have
+		// three different normals. Here, we are going to duplicate all such
+		// vertices.
+		
+    // Loop over shapes
+		for(size_t s = 0; s < shapes.size(); s++) {
+			
+      // Loop over faces (polygons)
+			size_t index_offset = 0;
+			for(size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+				size_t fv = shapes[s].mesh.num_face_vertices[f];
+				
+        // Loop over vertices in the face.
+				for(size_t v = 0; v < fv; v++) {
+					
+          // access to vertex
+					tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+0]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+1]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+2]);
+				
+        }
+				index_offset += fv;
+				
+        // per-face material (IGNORE)
+				shapes[s].mesh.material_ids[f];
+			}
+		}
+	}
+	cout << "Number of vertices: " << posBuf.size()/3 << endl;
+
+  vector<vector<float>> zbuf;
+
+  std::vector<Tri> tris;
+
+  // Split posBuf into triangles.
+  for(int i = 0; i < (int)posBuf.size()/9; i++)
+  {
+          vertex v1;
+          v1.x = posBuf[i*9];
+          v1.y = posBuf[i*9 + 1];
+          v1.z = posBuf[i*9 + 2];
+          vertex v2;
+          v2.x = posBuf[i*9 + 3];
+          v2.y = posBuf[i*9 + 4];
+          v2.z = posBuf[i*9 + 5];
+          vertex v3;
+          v3.x = posBuf[i*9 + 6];
+          v3.y = posBuf[i*9 + 7];
+          v3.z = posBuf[i*9 + 8];
+          Tri t(v1, v2, v3);
+          tris.push_back(t);
+  }
+
+  // Initialize min/max variables.
+  float xmin = posBuf[0];
+  float xmax = xmin;
+  float ymin = posBuf[1];
+  float ymax = ymin;
+  float zmin = tris[0].v[0].z;
+  float zmax = zmin;
+
+  // First time finding max and min.
+  // Also, initializing r,g,b per triangle.
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+                  
+                  int temp1 = rand()%255;
+                  int temp2 = rand()%255;
+                  int temp3 = rand()%255;
+                  tris[i].v[j].r = temp1;
+                  tris[i].v[j].g = temp2;
+                  tris[i].v[j].b = temp3;
+          }
+  }
+
+  unsigned char r = rand()%255;
+  unsigned char b = rand()%255;
+  unsigned char g = rand()%255;
+
+
+	// Create the image. We're using a `shared_ptr`, a C++11 feature.
+	auto image = make_shared<Image>(width, height);
+
+  // Find scaling ratio.
+  float xratio = (1.0*width/(xmax - xmin));
+  float yratio = (1.0*height/(ymax - ymin));
+  float zratio = (255.0/(zmax-zmin));
+
+  float aratio = 1.0;
+
+  // Determine and assign smaller ratio.
+  if(xratio < yratio)
+  {
+          aratio = xratio;
+  }
+  else
+  {
+          aratio = yratio;
+  }
+
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+                  tris[i].v[j].x *= aratio;
+                  tris[i].v[j].y *= aratio;
+                  tris[i].v[j].z *= zratio;
+          }
+  }
+  
+  xmin = tris[0].v[0].x;
+  xmax = xmin;
+  ymin = tris[0].v[0].y;
+  ymax = ymin;
+  zmin = tris[0].v[0].z;
+  zmax = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+          }
+  }
+  
+  float xoffset = ((width)/2 - (xmax + xmin)/2);
+  float yoffset = ((height)/2 - (ymax + ymin)/2);
+  float zoffset = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int j = 0; j < (int)tris[i].v.size();j++)
+          {
+                  tris[i].v[j].x += xoffset;
+                  tris[i].v[j].y += yoffset;
+                  tris[i].v[j].z -= zoffset;
+          }
+  }
+  
+  xmin = tris[0].v[0].x;
+  xmax = xmin;
+  ymin = tris[0].v[0].y;
+  ymax = ymin;
+  zmin = tris[0].v[0].z;
+  zmax = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+          tris[i].xmin = tris[i].v[0].x;
+          tris[i].xmax = tris[i].v[0].x;
+          tris[i].ymin = tris[i].v[0].y;
+          tris[i].ymax = tris[i].v[0].y;
+
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+
+                  if(tris[i].xmin > tris[i].v[j].x)
+                          tris[i].xmin = tris[i].v[j].x;
+                  if(tris[i].xmax < tris[i].v[j].x)
+                          tris[i].xmax = tris[i].v[j].x;
+                  if(tris[i].ymin > tris[i].v[j].y)
+                          tris[i].ymin = tris[i].v[j].y;
+                  if(tris[i].ymax < tris[i].v[j].y)
+                          tris[i].ymax = tris[i].v[j].y;
+          }
+  }
+  
+
+  for(int r = 0; r < width; r++)
+  {
+          vector<float> temp;
+          zbuf.push_back(temp);
+          for(int c = 0; c < height; c++)
+          {
+                  zbuf.at(r).push_back(zmin);
+          }
+  }
+
+  // Initialize variables for the three
+  // Barycentric areas.
+  float a1 = 0.0;
+  float a2 = 0.0;
+  float a3 = 0.0;
+
+  // Initialize variables for the three
+  // Barycentric coordinates.
+  float l1 = 0.0;
+  float l2 = 0.0;
+  float l3 = 0.0;
+
+  // Variable to hold current z coordinate.
+  float z = 0.0;
+
+  // I had each triangle hold a variable which was its area,
+  // Here, I make sure they all have their areas set correctly.
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+        tris[i].area = findArea(tris[i].v[0], tris[i].v[1], tris[i].v[2]);
+  }
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int x = tris[i].xmin; x < tris[i].xmax; x++)
+          {
+                  for(int y = tris[i].ymin; y < tris[i].ymax; y++)
+                  {
+                          // Temporary vertex so we can utilize findArea.
+                          vertex tempv;
+                          tempv.x = x;
+                          tempv.y = y;
+
+                          a3 = findArea(tris[i].v[0], tris[i].v[1], tempv);
+                          a2 = findArea(tris[i].v[0], tempv, tris[i].v[2]);
+                          a1 = findArea(tempv, tris[i].v[1], tris[i].v[2]);
+                          
+                          l1 = a1/tris[i].area;
+                          l2 = a2/tris[i].area;
+                          l3 = a3/tris[i].area;
+
+		                    	r = (a1*tris[i].v[0].r + a2*tris[i].v[1].r + a3*tris[i].v[2].r)/tris[i].area;
+	                    		g = (a1*tris[i].v[0].g + a2*tris[i].v[1].g + a3*tris[i].v[2].g)/tris[i].area;
+                    			b = (a1*tris[i].v[0].b + a2*tris[i].v[1].b + a3*tris[i].v[2].b)/tris[i].area;
+                          
+                          if(colormode == 0)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, r, g ,b);
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+
+                          float z1 = tris[i].v[0].z;
+                          float z2 = tris[i].v[1].z;
+                          float z3 = tris[i].v[2].z;
+
+                          z = (a1*z1 + a2*z2 + a3*z3)/tris[i].area;
+                          if(colormode == 1)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, z, 0, 0);
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+                          else if(colormode == 2)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, 0, (255/(ymax - ymin)) - (y - ymin)*(255/(ymax - ymin)), (y - ymin)*(255/(ymax - ymin)));
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+                  }
+          }
+  }
+
+	// Write image to file
+	image->writeToFile(filename);
+	return 0;
+}

A1/src/Image.cpp

@@ -0,0 +1,61 @@
+#include <iostream>
+#include <cassert>
+#include "Image.h"
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+
+using namespace std;
+
+Image::Image(int w, int h) :
+	width(w),
+	height(h),
+	comp(3),
+	pixels(width*height*comp, 0)
+{
+}
+
+Image::~Image()
+{
+}
+
+void Image::setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b)
+{
+	// The pixel data is laid out row by row. Each row consists of 'width'
+	// columns, and each column consists of 3 unsigned chars.
+
+	// First check for bounds
+	if(y < 0 || y >= height) {
+		cout << "Row " << y << " is out of bounds" << endl;
+		return;
+	}
+	if(x < 0 || x >= width) {
+		cout << "Col " << x << " is out of bounds" << endl;
+		return;
+	}
+
+	// Since the origin (0, 0) of the image is the upper left corner, we need
+	// to flip the row to make the origin be the lower left corner.
+	y = height - y - 1;
+	// index corresponding to row and col, (assuming single component image)
+	int index = y*width + x;
+	// Multiply by 3 to get the index for the rgb components.
+	assert(index >= 0);
+	assert(3*index + 2 < (int)pixels.size());
+	pixels[3*index + 0] = r;
+	pixels[3*index + 1] = g;
+	pixels[3*index + 2] = b;
+}
+
+void Image::writeToFile(const string &filename)
+{
+	// The distance in bytes from the first byte of a row of pixels to the
+	// first byte of the next row of pixels
+	int stride_in_bytes = width*comp*sizeof(unsigned char);
+	int rc = stbi_write_png(filename.c_str(), width, height, comp, &pixels[0], stride_in_bytes);
+	if(rc) {
+		cout << "Wrote to " << filename << endl;
+	} else {
+		cout << "Couldn't write to " << filename << endl;
+	}
+}

A1/src/Image.h

@@ -0,0 +1,25 @@
+#pragma once
+#ifndef _IMAGE_H_
+#define _IMAGE_H_
+
+#include <string>
+#include <vector>
+
+class Image
+{
+public:
+	Image(int width, int height);
+	virtual ~Image();
+	void setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b);
+	void writeToFile(const std::string &filename);
+	int getWidth() const { return width; }
+	int getHeight() const { return height; }
+
+private:
+	int width;
+	int height;
+	int comp;
+	std::vector<unsigned char> pixels;
+};
+
+#endif

A1/src/Triangle.cpp

@@ -0,0 +1,45 @@
+#include "Triangle.h"
+
+using namespace std;
+
+Tri::Tri()
+{
+        vertex v1;
+        v1.x = 0.0;
+        v1.y = 0.0;
+        v1.z = 0.0;
+        vertex v2;
+        v2.x = 0.0;
+        v2.y = 0.0;
+        v2.z = 0.0;
+        vertex v3;
+        v3.x = 0.0;
+        v3.y = 0.0;
+        v3.z = 0.0;
+        v.push_back(v1);
+        v.push_back(v2);
+        v.push_back(v3);
+        xmin = 0;
+        xmax = 0;
+        ymin = 0;
+        ymax = 0;
+        area = 0.0;
+}
+
+float findArea(vertex &one, vertex &two, vertex &three)
+{
+        return abs(one.x*two.y + two.x*three.y + three.x*one.y - one.y*two.x - two.y*three.x - three.y*one.x)/2.0;
+}
+
+Tri::Tri(vertex &one, vertex &two, vertex &three)
+{
+        v.push_back(one);
+        v.push_back(two);
+        v.push_back(three);
+        xmin = one.x;
+        xmax = one.x;
+        ymin = one.y;
+        ymax = one.y;
+        area = findArea(one, two, three);
+}
+

A1/src/Triangle.h

@@ -0,0 +1,34 @@
+#pragma once
+#ifndef _TRIANGLE_H_
+#define _TRIANGLE_H_
+
+#include <string>
+#include <cmath>
+#include <vector>
+
+struct vertex
+{
+        float x = 0.0;
+        float y = 0.0;
+        float z = 0.0;
+        float r = 0.0;
+        float g = 0.0;
+        float b = 0.0;
+};
+ 
+class Tri
+{
+        public:
+          Tri();
+          Tri(vertex &one, vertex &two, vertex &three);
+          std::vector<vertex> v;
+          float xmin;
+          float xmax;
+          float ymin;
+          float ymax;
+          float area;
+};
+
+float findArea(vertex &one, vertex &two, vertex &three);
+
+#endif

A1/src/main.cpp

@@ -0,0 +1,347 @@
+#include <iostream>
+#include <string>
+#include <memory>
+#include <stdlib.h>
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "tiny_obj_loader.h"
+
+#include "Image.h"
+#include "Triangle.h"
+
+// This allows you to skip the `std::` in front of C++ standard library
+// functions. You can also say `using std::cout` to be more selective.
+// You should never do this in a header file.
+using namespace std;
+
+int main(int argc, char **argv)
+{
+	if(argc < 6) {
+		cout << "Usage: A1 meshfile image width height colormode" << endl;
+		return 0;
+	}
+
+  srand(743298);
+	string meshName(argv[1]);
+  string filename(argv[2]);
+  int width = atoi(argv[3]);
+  int height = atoi(argv[4]);
+  int colormode = atoi(argv[5]);
+
+	// Load geometry
+	vector<float> posBuf; // list of vertex positions
+	
+  tinyobj::attrib_t attrib;
+	std::vector<tinyobj::shape_t> shapes;
+	std::vector<tinyobj::material_t> materials;
+	string errStr;
+	
+  bool rc = tinyobj::LoadObj(&attrib, &shapes, &materials, &errStr, meshName.c_str());
+	
+  if(!rc) {
+		cerr << errStr << endl;
+	} else {
+		// Some OBJ files have different indices for vertex positions, normals,
+		// and texture coordinates. For example, a cube corner vertex may have
+		// three different normals. Here, we are going to duplicate all such
+		// vertices.
+		
+    // Loop over shapes
+		for(size_t s = 0; s < shapes.size(); s++) {
+			
+      // Loop over faces (polygons)
+			size_t index_offset = 0;
+			for(size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+				size_t fv = shapes[s].mesh.num_face_vertices[f];
+				
+        // Loop over vertices in the face.
+				for(size_t v = 0; v < fv; v++) {
+					
+          // access to vertex
+					tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+0]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+1]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+2]);
+				
+        }
+				index_offset += fv;
+				
+        // per-face material (IGNORE)
+				shapes[s].mesh.material_ids[f];
+			}
+		}
+	}
+	cout << "Number of vertices: " << posBuf.size()/3 << endl;
+
+  vector<vector<float>> zbuf;
+
+  std::vector<Tri> tris;
+
+  // Split posBuf into triangles.
+  for(int i = 0; i < (int)posBuf.size()/9; i++)
+  {
+          vertex v1;
+          v1.x = posBuf[i*9];
+          v1.y = posBuf[i*9 + 1];
+          v1.z = posBuf[i*9 + 2];
+          vertex v2;
+          v2.x = posBuf[i*9 + 3];
+          v2.y = posBuf[i*9 + 4];
+          v2.z = posBuf[i*9 + 5];
+          vertex v3;
+          v3.x = posBuf[i*9 + 6];
+          v3.y = posBuf[i*9 + 7];
+          v3.z = posBuf[i*9 + 8];
+          Tri t(v1, v2, v3);
+          tris.push_back(t);
+  }
+
+  // Initialize min/max variables.
+  float xmin = posBuf[0];
+  float xmax = xmin;
+  float ymin = posBuf[1];
+  float ymax = ymin;
+  float zmin = tris[0].v[0].z;
+  float zmax = zmin;
+
+  // First time finding max and min.
+  // Also, initializing r,g,b per triangle.
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+                  
+                  int temp1 = rand()%255;
+                  int temp2 = rand()%255;
+                  int temp3 = rand()%255;
+                  tris[i].v[j].r = temp1;
+                  tris[i].v[j].g = temp2;
+                  tris[i].v[j].b = temp3;
+          }
+  }
+
+  unsigned char r = rand()%255;
+  unsigned char b = rand()%255;
+  unsigned char g = rand()%255;
+
+
+	// Create the image. We're using a `shared_ptr`, a C++11 feature.
+	auto image = make_shared<Image>(width, height);
+
+  // Find scaling ratio.
+  float xratio = (1.0*width/(xmax - xmin));
+  float yratio = (1.0*height/(ymax - ymin));
+  float zratio = (255.0/(zmax-zmin));
+
+  float aratio = 1.0;
+
+  // Determine and assign smaller ratio.
+  if(xratio < yratio)
+  {
+          aratio = xratio;
+  }
+  else
+  {
+          aratio = yratio;
+  }
+
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+                  tris[i].v[j].x *= aratio;
+                  tris[i].v[j].y *= aratio;
+                  tris[i].v[j].z *= zratio;
+          }
+  }
+  
+  xmin = tris[0].v[0].x;
+  xmax = xmin;
+  ymin = tris[0].v[0].y;
+  ymax = ymin;
+  zmin = tris[0].v[0].z;
+  zmax = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+          }
+  }
+  
+  float xoffset = ((width)/2 - (xmax + xmin)/2);
+  float yoffset = ((height)/2 - (ymax + ymin)/2);
+  float zoffset = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int j = 0; j < (int)tris[i].v.size();j++)
+          {
+                  tris[i].v[j].x += xoffset;
+                  tris[i].v[j].y += yoffset;
+                  tris[i].v[j].z -= zoffset;
+          }
+  }
+  
+  xmin = tris[0].v[0].x;
+  xmax = xmin;
+  ymin = tris[0].v[0].y;
+  ymax = ymin;
+  zmin = tris[0].v[0].z;
+  zmax = zmin;
+
+  for(int i = 0; i < (int)tris.size(); i++)
+  { 
+          tris[i].xmin = tris[i].v[0].x;
+          tris[i].xmax = tris[i].v[0].x;
+          tris[i].ymin = tris[i].v[0].y;
+          tris[i].ymax = tris[i].v[0].y;
+
+          for(int j = 0; j < (int)tris[i].v.size(); j++)
+          {
+
+                  if(xmin > tris[i].v[j].x)
+                          xmin = tris[i].v[j].x;
+                  if(xmax < tris[i].v[j].x)
+                          xmax = tris[i].v[j].x;
+                  if(ymin > tris[i].v[j].y)
+                          ymin = tris[i].v[j].y;
+                  if(ymax < tris[i].v[j].y)
+                          ymax = tris[i].v[j].y;
+                  if(zmin > tris[i].v[j].z)
+                          zmin = tris[i].v[j].z;
+                  if(zmax < tris[i].v[j].z)
+                          zmax = tris[i].v[j].z;
+
+                  if(tris[i].xmin > tris[i].v[j].x)
+                          tris[i].xmin = tris[i].v[j].x;
+                  if(tris[i].xmax < tris[i].v[j].x)
+                          tris[i].xmax = tris[i].v[j].x;
+                  if(tris[i].ymin > tris[i].v[j].y)
+                          tris[i].ymin = tris[i].v[j].y;
+                  if(tris[i].ymax < tris[i].v[j].y)
+                          tris[i].ymax = tris[i].v[j].y;
+          }
+  }
+  
+
+  for(int r = 0; r < width; r++)
+  {
+          vector<float> temp;
+          zbuf.push_back(temp);
+          for(int c = 0; c < height; c++)
+          {
+                  zbuf.at(r).push_back(zmin);
+          }
+  }
+
+  // Initialize variables for the three
+  // Barycentric areas.
+  float a1 = 0.0;
+  float a2 = 0.0;
+  float a3 = 0.0;
+
+  // Initialize variables for the three
+  // Barycentric coordinates.
+  float l1 = 0.0;
+  float l2 = 0.0;
+  float l3 = 0.0;
+
+  // Variable to hold current z coordinate.
+  float z = 0.0;
+
+  // I had each triangle hold a variable which was its area,
+  // Here, I make sure they all have their areas set correctly.
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+        tris[i].area = findArea(tris[i].v[0], tris[i].v[1], tris[i].v[2]);
+  }
+  for(int i = 0; i < (int)tris.size(); i++)
+  {
+          for(int x = tris[i].xmin; x < tris[i].xmax; x++)
+          {
+                  for(int y = tris[i].ymin; y < tris[i].ymax; y++)
+                  {
+                          // Temporary vertex so we can utilize findArea.
+                          vertex tempv;
+                          tempv.x = x;
+                          tempv.y = y;
+
+                          a3 = findArea(tris[i].v[0], tris[i].v[1], tempv);
+                          a2 = findArea(tris[i].v[0], tempv, tris[i].v[2]);
+                          a1 = findArea(tempv, tris[i].v[1], tris[i].v[2]);
+                          
+                          l1 = a1/tris[i].area;
+                          l2 = a2/tris[i].area;
+                          l3 = a3/tris[i].area;
+
+		                    	r = (a1*tris[i].v[0].r + a2*tris[i].v[1].r + a3*tris[i].v[2].r)/tris[i].area;
+	                    		g = (a1*tris[i].v[0].g + a2*tris[i].v[1].g + a3*tris[i].v[2].g)/tris[i].area;
+                    			b = (a1*tris[i].v[0].b + a2*tris[i].v[1].b + a3*tris[i].v[2].b)/tris[i].area;
+                          
+                          if(colormode == 0)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, r, g ,b);
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+
+                          float z1 = tris[i].v[0].z;
+                          float z2 = tris[i].v[1].z;
+                          float z3 = tris[i].v[2].z;
+
+                          z = (a1*z1 + a2*z2 + a3*z3)/tris[i].area;
+                          if(colormode == 1)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, z, 0, 0);
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+                          else if(colormode == 2)
+                          {
+                                  if(l1 + l2 + l3 <= 1.01 && zbuf.at(x).at(y) <= z)
+                                  {
+                                          image->setPixel(x, y, 0, (255/(ymax - ymin)) - (y - ymin)*(255/(ymax - ymin)), (y - ymin)*(255/(ymax - ymin)));
+                                          zbuf.at(x).at(y) = z;
+                                  }
+                          }
+                  }
+          }
+  }
+
+	// Write image to file
+	image->writeToFile(filename);
+	return 0;
+}

A2/.gitignore

@@ -0,0 +1 @@
+build/

A2/CMakeLists.txt

@@ -0,0 +1,126 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(A2)
+
+# FOR LAB MACHINES ONLY!
+# DO NOT EDIT
+SET(DEF_DIR_GLM "C:\\c++\\glm")
+SET(DEF_DIR_GLFW "C:\\c++\\glfw-3.2.1")
+SET(DEF_DIR_GLEW "C:\\c++\\glew-2.0.0")
+
+# Is this the solution?
+# Override with `cmake -DSOL=ON ..`
+OPTION(SOL "Solution" OFF)
+
+# Use glob to get the list of all source files.
+# We don't really need to include header and resource files to build, but it's
+# nice to have them also show up in IDEs.
+IF(${SOL})
+	FILE(GLOB_RECURSE SOURCES "src0/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src0/*.h")
+ELSE()
+	FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src/*.h")
+ENDIF()
+FILE(GLOB_RECURSE GLSL "resources/*.glsl")
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS} ${GLSL})
+
+# Get the GLM environment variable. Since GLM is a header-only library, we
+# just need to add it to the include directory.
+SET(GLM_INCLUDE_DIR "$ENV{GLM_INCLUDE_DIR}")
+IF(NOT GLM_INCLUDE_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLM_INCLUDE_DIR to the root directory of your GLM installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLM in ${DEF_DIR_GLM}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLM})
+			MESSAGE(STATUS "Found!")
+			SET(GLM_INCLUDE_DIR ${DEF_DIR_GLM})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLM_INCLUDE_DIR})
+
+# Get the GLFW environment variable. There should be a CMakeLists.txt in the 
+# specified directory.
+SET(GLFW_DIR "$ENV{GLFW_DIR}")
+IF(NOT GLFW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLFW_DIR to the root directory of your GLFW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLFW in ${DEF_DIR_GLFW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLFW})
+			MESSAGE(STATUS "Found!")
+			SET(GLFW_DIR ${DEF_DIR_GLFW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+OPTION(GLFW_BUILD_EXAMPLES "GLFW_BUILD_EXAMPLES" OFF)
+OPTION(GLFW_BUILD_TESTS "GLFW_BUILD_TESTS" OFF)
+OPTION(GLFW_BUILD_DOCS "GLFW_BUILD_DOCS" OFF)
+IF(CMAKE_BUILD_TYPE MATCHES Release)
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/release)
+ELSE()
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/debug)
+ENDIF()
+INCLUDE_DIRECTORIES(${GLFW_DIR}/include)
+TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} glfw ${GLFW_LIBRARIES})
+
+# Get the GLEW environment variable.
+SET(GLEW_DIR "$ENV{GLEW_DIR}")
+IF(NOT GLEW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLEW_DIR to the root directory of your GLEW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLEW in ${DEF_DIR_GLEW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLEW})
+			MESSAGE(STATUS "Found!")
+			SET(GLEW_DIR ${DEF_DIR_GLEW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLEW_DIR}/include)
+IF(WIN32)
+	# With prebuilt binaries
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/Release/Win32/glew32s.lib)
+ELSE()
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/libGLEW.a)
+ENDIF()
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} opengl32.lib)
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+	IF(APPLE)
+		# Add required frameworks for GLFW.
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "-framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo")
+	ELSE()
+		#Link the Linux OpenGL library
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "GL")
+	ENDIF()
+ENDIF()

A2/resources/cube.obj

@@ -0,0 +1,29 @@
+# Blender v2.71 (sub 0) OBJ File: ''
+# www.blender.org
+v 0.500000 0.500000 -0.500000
+v 0.500000 -0.500000 -0.500000
+v -0.500000 -0.500000 -0.500000
+v -0.500000 0.500000 -0.500000
+v 0.500000 0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+v -0.500000 -0.500000 0.500000
+v -0.500000 0.500000 0.500000
+vn 0.000000 0.000000 -1.000000
+vn 0.000000 0.000000 1.000000
+vn 1.000000 -0.000000 -0.000000
+vn -0.000000 -1.000000 -0.000000
+vn -1.000000 0.000000 -0.000000
+vn 0.000000 1.000000 0.000000
+s off
+f 2//1 3//1 4//1
+f 8//2 7//2 6//2
+f 1//3 5//3 6//3
+f 2//4 6//4 7//4
+f 7//5 8//5 4//5
+f 1//6 4//6 8//6
+f 1//1 2//1 4//1
+f 5//2 8//2 6//2
+f 2//3 1//3 6//3
+f 3//4 2//4 7//4
+f 3//5 7//5 4//5
+f 5//6 1//6 8//6

A2/resources/frag.glsl

@@ -0,0 +1,8 @@
+#version 120
+
+varying vec3 vCol;
+
+void main()
+{
+	gl_FragColor = vec4(vCol.r, vCol.g, vCol.b, 1.0);
+}

A2/resources/vert.glsl

@@ -0,0 +1,13 @@
+#version 120
+
+attribute vec4 aPos;
+attribute vec3 aNor;
+uniform mat4 P;
+uniform mat4 MV;
+varying vec3 vCol;
+
+void main()
+{
+	gl_Position = P * MV * aPos;
+	vCol = 0.5*(aNor + 1.0);
+}

A2/src/Body.h

@@ -0,0 +1,43 @@
+// Create Body Class
+
+/*
+Class Body
+{
+        Head h;
+        Shoulder sl;
+        Shoulder sr;
+        Leg ull;
+        Leg ulr;
+        bool selected = true;
+
+        draw(MatrixStack MV);
+}
+*/
+
+/*
+
+static void renderA(MatrixStack MV)
+{
+    MV.pushMatrix();
+      MV.translate(-1, 0, 0);
+      MV.rotate(-(2*PI)/16, 0, 0, 1);
+      MV.scale(0.5, 4, 0.5);
+	    glUniformMatrix4fv(unifIDs["MV"], 1, GL_FALSE, value_ptr(MV.topMatrix()));
+	    glDrawArrays(GL_TRIANGLES, 0, indCount);
+    MV.popMatrix(); // This line undoes the transformation applied to #1
+    MV.pushMatrix();
+      MV.scale(2, 0.5, 0.5);
+	    glUniformMatrix4fv(unifIDs["MV"], 1, GL_FALSE, value_ptr(MV.topMatrix()));
+	    glDrawArrays(GL_TRIANGLES, 0, indCount);
+    MV.popMatrix(); // This line undoes the transformation applied to #2
+    MV.pushMatrix();
+      MV.translate(1, 0, 0);
+      MV.rotate((2*PI)/16, 0, 0, 1);
+      MV.scale(0.5, 4, 0.5);
+	    glUniformMatrix4fv(unifIDs["MV"], 1, GL_FALSE, value_ptr(MV.topMatrix()));
+	    glDrawArrays(GL_TRIANGLES, 0, indCount);
+    MV.popMatrix(); // This line undoes the transformation applied to #3
+}
+
+
+*/

A2/src/GLSL.cpp

@@ -0,0 +1,152 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#include "GLSL.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <cassert>
+#include <cstring>
+
+using namespace std;
+
+namespace GLSL {
+
+const char * errorString(GLenum err)
+{
+	switch(err) {
+	case GL_NO_ERROR:
+		return "No error";
+	case GL_INVALID_ENUM:
+		return "Invalid enum";
+	case GL_INVALID_VALUE:
+		return "Invalid value";
+	case GL_INVALID_OPERATION:
+		return "Invalid operation";
+	case GL_STACK_OVERFLOW:
+		return "Stack overflow";
+	case GL_STACK_UNDERFLOW:
+		return "Stack underflow";
+	case GL_OUT_OF_MEMORY:
+		return "Out of memory";
+	default:
+		return "No error";
+	}
+}
+
+void checkVersion()
+{
+	int major, minor;
+	major = minor = 0;
+	const char *verstr = (const char *)glGetString(GL_VERSION);
+	
+	if((verstr == NULL) || (sscanf(verstr, "%d.%d", &major, &minor) != 2)) {
+		printf("Invalid GL_VERSION format %d.%d\n", major, minor);
+	}
+	if(major < 2) {
+		printf("This shader example will not work due to the installed Opengl version, which is %d.%d.\n", major, minor);
+		exit(0);
+	}
+}
+
+void checkError(const char *str)
+{
+	GLenum glErr = glGetError();
+	if(glErr != GL_NO_ERROR) {
+		if(str) {
+			printf("%s: ", str);
+		}
+		printf("GL_ERROR = %s.\n", errorString(glErr));
+		assert(false);
+	}
+}
+
+void printShaderInfoLog(GLuint shader)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetShaderInfoLog(shader, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Shader InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+
+void printProgramInfoLog(GLuint program)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetProgramInfoLog(program, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Program InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+	
+char *textFileRead(const char *fn)
+{
+	FILE *fp;
+	char *content = NULL;
+	int count = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"rt");
+		if(fp != NULL) {
+			fseek(fp, 0, SEEK_END);
+			count = (int)ftell(fp);
+			rewind(fp);
+			if(count > 0) {
+				content = (char *)malloc(sizeof(char) * (count+1));
+				count = (int)fread(content,sizeof(char),count,fp);
+				content[count] = '\0';
+			}
+			fclose(fp);
+		} else {
+			printf("error loading %s\n", fn);
+		}
+	}
+	return content;
+}
+
+int textFileWrite(const char *fn, const char *s)
+{
+	FILE *fp;
+	int status = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"w");
+		if(fp != NULL) {
+			if(fwrite(s,sizeof(char),strlen(s),fp) == strlen(s)) {
+				status = 1;
+			}
+			fclose(fp);
+		}
+	}
+	return(status);
+}
+
+}

A2/src/GLSL.h

@@ -0,0 +1,40 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#pragma once
+#ifndef __GLSL__
+#define __GLSL__
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// For printing out the current file and line number                         //
+///////////////////////////////////////////////////////////////////////////////
+#include <sstream>
+
+template <typename T>
+std::string NumberToString(T x)
+{
+	std::ostringstream ss;
+	ss << x;
+	return ss.str();
+}
+
+#define GET_FILE_LINE (std::string(__FILE__) + ":" + NumberToString(__LINE__)).c_str()
+///////////////////////////////////////////////////////////////////////////////
+
+namespace GLSL {
+
+	void checkVersion();
+	void checkError(const char *str = 0);
+	void printProgramInfoLog(GLuint program);
+	void printShaderInfoLog(GLuint shader);
+	int textFileWrite(const char *filename, const char *s);
+	char *textFileRead(const char *filename);
+}
+
+#endif

A2/src/MatrixStack.cpp

@@ -0,0 +1,114 @@
+#include "MatrixStack.h"
+
+#include <stdio.h>
+#include <cassert>
+#include <vector>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtx/transform.hpp>
+
+using namespace std;
+
+MatrixStack::MatrixStack()
+{
+	mstack = make_shared< stack<glm::mat4> >();
+	mstack->push(glm::mat4(1.0));
+}
+
+MatrixStack::~MatrixStack()
+{
+}
+
+void MatrixStack::pushMatrix()
+{
+	const glm::mat4 &top = mstack->top();
+	mstack->push(top);
+	assert(mstack->size() < 100);
+}
+
+void MatrixStack::popMatrix()
+{
+	assert(!mstack->empty());
+	mstack->pop();
+	// There should always be one matrix left.
+	assert(!mstack->empty());
+}
+
+void MatrixStack::loadIdentity()
+{
+	glm::mat4 &top = mstack->top();
+	top = glm::mat4(1.0);
+}
+
+void MatrixStack::translate(const glm::vec3 &t)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::translate(t);
+}
+
+void MatrixStack::translate(float x, float y, float z)
+{
+	translate(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(const glm::vec3 &s)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::scale(s);
+}
+
+void MatrixStack::scale(float x, float y, float z)
+{
+	scale(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(float s)
+{
+	scale(glm::vec3(s, s, s));
+}
+
+void MatrixStack::rotate(float angle, const glm::vec3 &axis)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::rotate(angle, axis);
+}
+
+void MatrixStack::rotate(float angle, float x, float y, float z)
+{
+	rotate(angle, glm::vec3(x, y, z));
+}
+
+void MatrixStack::multMatrix(const glm::mat4 &matrix)
+{
+	glm::mat4 &top = mstack->top();
+	top *= matrix;
+}
+
+const glm::mat4 &MatrixStack::topMatrix() const
+{
+	return mstack->top();
+}
+
+void MatrixStack::print(const glm::mat4 &mat, const char *name)
+{
+	if(name) {
+		printf("%s = [\n", name);
+	}
+	for(int i = 0; i < 4; ++i) {
+		for(int j = 0; j < 4; ++j) {
+			// mat[j] returns the jth column
+			printf("%- 5.2f ", mat[j][i]);
+		}
+		printf("\n");
+	}
+	if(name) {
+		printf("];");
+	}
+	printf("\n");
+}
+
+void MatrixStack::print(const char *name) const
+{
+	print(mstack->top(), name);
+}

A2/src/MatrixStack.h

@@ -0,0 +1,50 @@
+#pragma once
+#ifndef _MatrixStack_H_
+#define _MatrixStack_H_
+
+#include <stack>
+#include <memory>
+#include <glm/fwd.hpp>
+
+class MatrixStack
+{
+public:
+	MatrixStack();
+	virtual ~MatrixStack();
+	
+	// glPushMatrix(): Copies the current matrix and adds it to the top of the stack
+	void pushMatrix();
+	// glPopMatrix(): Removes the top of the stack and sets the current matrix to be the matrix that is now on top
+	void popMatrix();
+	
+	// glLoadIdentity(): Sets the top matrix to be the identity
+	void loadIdentity();
+	// glMultMatrix(): Right multiplies the top matrix
+	void multMatrix(const glm::mat4 &matrix);
+	
+	// glTranslate(): Right multiplies the top matrix by a translation matrix
+	void translate(const glm::vec3 &trans);
+	void translate(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(const glm::vec3 &scale);
+	void scale(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(float size);
+	// glRotate(): Right multiplies the top matrix by a rotation matrix (angle in radians)
+	void rotate(float angle, const glm::vec3 &axis);
+	void rotate(float angle, float x, float y, float z);
+	
+	// glGet(GL_MODELVIEW_MATRIX): Gets the top matrix
+	const glm::mat4 &topMatrix() const;
+	
+	// Prints out the specified matrix
+	static void print(const glm::mat4 &mat, const char *name = 0);
+	// Prints out the top matrix
+	void print(const char *name = 0) const;
+	
+private:
+	std::shared_ptr< std::stack<glm::mat4> > mstack;
+	
+};
+
+#endif

A2/src/Program.cpp

@@ -0,0 +1,126 @@
+#include "Program.h"
+
+#include <iostream>
+#include <cassert>
+
+#include "GLSL.h"
+
+using namespace std;
+
+Program::Program() :
+	vShaderName(""),
+	fShaderName(""),
+	pid(0),
+	verbose(true)
+{
+	
+}
+
+Program::~Program()
+{
+	
+}
+
+void Program::setShaderNames(const string &v, const string &f)
+{
+	vShaderName = v;
+	fShaderName = f;
+}
+
+bool Program::init()
+{
+	GLint rc;
+	
+	// Create shader handles
+	GLuint VS = glCreateShader(GL_VERTEX_SHADER);
+	GLuint FS = glCreateShader(GL_FRAGMENT_SHADER);
+	
+	// Read shader sources
+	const char *vshader = GLSL::textFileRead(vShaderName.c_str());
+	const char *fshader = GLSL::textFileRead(fShaderName.c_str());
+	glShaderSource(VS, 1, &vshader, NULL);
+	glShaderSource(FS, 1, &fshader, NULL);
+	
+	// Compile vertex shader
+	glCompileShader(VS);
+	glGetShaderiv(VS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(VS);
+			cout << "Error compiling vertex shader " << vShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Compile fragment shader
+	glCompileShader(FS);
+	glGetShaderiv(FS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(FS);
+			cout << "Error compiling fragment shader " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Create the program and link
+	pid = glCreateProgram();
+	glAttachShader(pid, VS);
+	glAttachShader(pid, FS);
+	glLinkProgram(pid);
+	glGetProgramiv(pid, GL_LINK_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printProgramInfoLog(pid);
+			cout << "Error linking shaders " << vShaderName << " and " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	GLSL::checkError(GET_FILE_LINE);
+	return true;
+}
+
+void Program::bind()
+{
+	glUseProgram(pid);
+}
+
+void Program::unbind()
+{
+	glUseProgram(0);
+}
+
+void Program::addAttribute(const string &name)
+{
+	attributes[name] = glGetAttribLocation(pid, name.c_str());
+}
+
+void Program::addUniform(const string &name)
+{
+	uniforms[name] = glGetUniformLocation(pid, name.c_str());
+}
+
+GLint Program::getAttribute(const string &name) const
+{
+	map<string,GLint>::const_iterator attribute = attributes.find(name.c_str());
+	if(attribute == attributes.end()) {
+		if(isVerbose()) {
+			cout << name << " is not an attribute variable" << endl;
+		}
+		return -1;
+	}
+	return attribute->second;
+}
+
+GLint Program::getUniform(const string &name) const
+{
+	map<string,GLint>::const_iterator uniform = uniforms.find(name.c_str());
+	if(uniform == uniforms.end()) {
+		if(isVerbose()) {
+			cout << name << " is not a uniform variable" << endl;
+		}
+		return -1;
+	}
+	return uniform->second;
+}

A2/src/Program.h

@@ -0,0 +1,44 @@
+#pragma  once
+#ifndef __Program__
+#define __Program__
+
+#include <map>
+#include <string>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+/**
+ * An OpenGL Program (vertex and fragment shaders)
+ */
+class Program
+{
+public:
+	Program();
+	virtual ~Program();
+	
+	void setVerbose(bool v) { verbose = v; }
+	bool isVerbose() const { return verbose; }
+	
+	void setShaderNames(const std::string &v, const std::string &f);
+	virtual bool init();
+	virtual void bind();
+	virtual void unbind();
+
+	void addAttribute(const std::string &name);
+	void addUniform(const std::string &name);
+	GLint getAttribute(const std::string &name) const;
+	GLint getUniform(const std::string &name) const;
+	
+protected:
+	std::string vShaderName;
+	std::string fShaderName;
+	
+private:
+	GLuint pid;
+	std::map<std::string,GLint> attributes;
+	std::map<std::string,GLint> uniforms;
+	bool verbose;
+};
+
+#endif

A2/src/Shape.cpp

@@ -0,0 +1,135 @@
+#include "Shape.h"
+#include <iostream>
+
+#include "GLSL.h"
+#include "Program.h"
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "tiny_obj_loader.h"
+
+using namespace std;
+
+Shape::Shape() :
+	posBufID(0),
+	norBufID(0),
+	texBufID(0)
+{
+}
+
+Shape::~Shape()
+{
+}
+
+void Shape::loadMesh(const string &meshName)
+{
+	// Load geometry
+	tinyobj::attrib_t attrib;
+	std::vector<tinyobj::shape_t> shapes;
+	std::vector<tinyobj::material_t> materials;
+	string errStr;
+	bool rc = tinyobj::LoadObj(&attrib, &shapes, &materials, &errStr, meshName.c_str());
+	if(!rc) {
+		cerr << errStr << endl;
+	} else {
+		// Some OBJ files have different indices for vertex positions, normals,
+		// and texture coordinates. For example, a cube corner vertex may have
+		// three different normals. Here, we are going to duplicate all such
+		// vertices.
+		// Loop over shapes
+		for(size_t s = 0; s < shapes.size(); s++) {
+			// Loop over faces (polygons)
+			size_t index_offset = 0;
+			for(size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+				size_t fv = shapes[s].mesh.num_face_vertices[f];
+				// Loop over vertices in the face.
+				for(size_t v = 0; v < fv; v++) {
+					// access to vertex
+					tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+0]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+1]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+2]);
+					if(!attrib.normals.empty()) {
+						norBuf.push_back(attrib.normals[3*idx.normal_index+0]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+1]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+2]);
+					}
+					if(!attrib.texcoords.empty()) {
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+0]);
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+1]);
+					}
+				}
+				index_offset += fv;
+				// per-face material (IGNORE)
+				shapes[s].mesh.material_ids[f];
+			}
+		}
+	}
+}
+
+void Shape::init()
+{
+	// Send the position array to the GPU
+	glGenBuffers(1, &posBufID);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glBufferData(GL_ARRAY_BUFFER, posBuf.size()*sizeof(float), &posBuf[0], GL_STATIC_DRAW);
+	
+	// Send the normal array to the GPU
+	if(!norBuf.empty()) {
+		glGenBuffers(1, &norBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glBufferData(GL_ARRAY_BUFFER, norBuf.size()*sizeof(float), &norBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Send the texture array to the GPU
+	if(!texBuf.empty()) {
+		glGenBuffers(1, &texBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glBufferData(GL_ARRAY_BUFFER, texBuf.size()*sizeof(float), &texBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Unbind the arrays
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+void Shape::draw(const shared_ptr<Program> prog) const
+{
+	// Bind position buffer
+	int h_pos = prog->getAttribute("aPos");
+	glEnableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glVertexAttribPointer(h_pos, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	
+	// Bind normal buffer
+	int h_nor = prog->getAttribute("aNor");
+	if(h_nor != -1 && norBufID != 0) {
+		glEnableVertexAttribArray(h_nor);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glVertexAttribPointer(h_nor, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Bind texcoords buffer
+	int h_tex = prog->getAttribute("aTex");
+	if(h_tex != -1 && texBufID != 0) {
+		glEnableVertexAttribArray(h_tex);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glVertexAttribPointer(h_tex, 2, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Draw
+	int count = posBuf.size()/3; // number of indices to be rendered
+	glDrawArrays(GL_TRIANGLES, 0, count);
+	
+	// Disable and unbind
+	if(h_tex != -1) {
+		glDisableVertexAttribArray(h_tex);
+	}
+	if(h_nor != -1) {
+		glDisableVertexAttribArray(h_nor);
+	}
+	glDisableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}

A2/src/Shape.h

@@ -0,0 +1,36 @@
+#pragma once
+#ifndef _SHAPE_H_
+#define _SHAPE_H_
+
+#include <string>
+#include <vector>
+#include <memory>
+
+class Program;
+
+/**
+ * A shape defined by a list of triangles
+ * - posBuf should be of length 3*ntris
+ * - norBuf should be of length 3*ntris (if normals are available)
+ * - texBuf should be of length 2*ntris (if texture coords are available)
+ * posBufID, norBufID, and texBufID are OpenGL buffer identifiers.
+ */
+class Shape
+{
+public:
+	Shape();
+	virtual ~Shape();
+	void loadMesh(const std::string &meshName);
+	void init();
+	void draw(const std::shared_ptr<Program> prog) const;
+	
+private:
+	std::vector<float> posBuf;
+	std::vector<float> norBuf;
+	std::vector<float> texBuf;
+	unsigned posBufID;
+	unsigned norBufID;
+	unsigned texBufID;
+};
+
+#endif

A2/src/main.cpp

@@ -0,0 +1,187 @@
+#include <cassert>
+#include <cstring>
+#define _USE_MATH_DEFINES
+#include <cmath>
+#include <iostream>
+#include <vector>
+#include <map>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/type_ptr.hpp>
+
+#include "tiny_obj_loader.h"
+
+#include "GLSL.h"
+#include "MatrixStack.h"
+#include "Shape.h"
+#include "Program.h"
+
+#define PI 3.14159
+
+using namespace std;
+using namespace glm;
+
+GLFWwindow *window; // Main application window
+string RESOURCE_DIR = "./"; // Where the resources are loaded from
+shared_ptr<Program> prog;
+shared_ptr<Shape> shape;
+
+
+GLuint progID;
+map<string,GLint> attrIDs;
+map<string,GLint> unifIDs;
+map<string,GLuint> bufIDs;
+int indCount;
+// This function is called when a GLFW error occurs
+static void error_callback(int error, const char *description)
+{
+	cerr << description << endl;
+}
+
+// This function is called when a key is pressed
+static void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods)
+{
+	if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
+		glfwSetWindowShouldClose(window, GL_TRUE);
+	}
+}
+
+// This function is called when the mouse is clicked
+static void mouse_callback(GLFWwindow *window, int button, int action, int mods)
+{
+	// Do nothing
+}
+
+// If the window is resized, capture the new size and reset the viewport
+static void resize_callback(GLFWwindow *window, int width, int height)
+{
+	glViewport(0, 0, width, height);
+}
+
+static void init()
+{
+	GLSL::checkVersion();
+
+	// Set background color.
+	glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+	// Enable z-buffer test.
+	glEnable(GL_DEPTH_TEST);
+
+	// Initialize mesh.
+	shape = make_shared<Shape>();
+	shape->loadMesh(RESOURCE_DIR + "teapot.obj");
+	shape->init();
+	
+	// Initialize the GLSL program.
+	prog = make_shared<Program>();
+	prog->setVerbose(false); // Set this to true when debugging.
+	prog->setShaderNames(RESOURCE_DIR + "simple_vert.glsl", RESOURCE_DIR + "simple_frag.glsl");
+	prog->init();
+	prog->addUniform("P");
+	prog->addUniform("MV");
+	prog->addAttribute("aPos");
+	prog->addAttribute("aNor");
+	
+	// If there were any OpenGL errors, this will print something.
+	// You can intersperse this line in your code to find the exact location
+	// of your OpenGL error.
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+static void render()
+{
+	// Get current frame buffer size.
+	int width, height;
+	glfwGetFramebufferSize(window, &width, &height);
+	float aspect = width/(float)height;
+	glViewport(0, 0, width, height);
+
+	// Clear framebuffer.
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	// Create matrix stacks.
+	auto P = make_shared<MatrixStack>();
+	auto MV = make_shared<MatrixStack>();
+	// Apply projection.
+	P->pushMatrix();
+	P->multMatrix(glm::perspective((float)(45.0*M_PI/180.0), aspect, 0.01f, 100.0f));
+	// Apply camera transform.
+	MV->pushMatrix();
+	MV->translate(glm::vec3(0, -0.5, -3));
+	
+	// Draw mesh using GLSL.
+	prog->bind();
+	glUniformMatrix4fv(prog->getUniform("P"), 1, GL_FALSE, &P->topMatrix()[0][0]);
+	glUniformMatrix4fv(prog->getUniform("MV"), 1, GL_FALSE, &MV->topMatrix()[0][0]);
+	shape->draw(prog);
+	prog->unbind();
+
+	// Pop matrix stacks.
+	MV->popMatrix();
+	P->popMatrix();
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+int main(int argc, char **argv)
+{
+	if(argc < 2) {
+		cout << "Please specify the resource directory." << endl;
+		return 0;
+	}
+	RESOURCE_DIR = argv[1] + string("/");
+
+	// Set error callback.
+	glfwSetErrorCallback(error_callback);
+	// Initialize the library.
+	if(!glfwInit()) {
+		return -1;
+	}
+	// Create a windowed mode window and its OpenGL context.
+	window = glfwCreateWindow(640, 480, "Alexander Huddleston", NULL, NULL);
+	if(!window) {
+		glfwTerminate();
+		return -1;
+	}
+	// Make the window's context current.
+	glfwMakeContextCurrent(window);
+	// Initialize GLEW.
+	glewExperimental = true;
+	if(glewInit() != GLEW_OK) {
+		cerr << "Failed to initialize GLEW" << endl;
+		return -1;
+	}
+	glGetError(); // A bug in glewInit() causes an error that we can safely ignore.
+	cout << "OpenGL version: " << glGetString(GL_VERSION) << endl;
+	cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << endl;
+	GLSL::checkVersion();
+	// Set vsync.
+	glfwSwapInterval(1);
+	// Set keyboard callback.
+	glfwSetKeyCallback(window, key_callback);
+	// Set the mouse call back.
+	glfwSetMouseButtonCallback(window, mouse_callback);
+	// Set the window resize call back.
+	glfwSetFramebufferSizeCallback(window, resize_callback);
+	// Initialize scene.
+	init();
+	// Loop until the user closes the window.
+	while(!glfwWindowShouldClose(window)) {
+		// Render scene.
+		render();
+		// Swap front and back buffers.
+		glfwSwapBuffers(window);
+		// Poll for and process events.
+		glfwPollEvents();
+	}
+	// Quit program.
+	glfwDestroyWindow(window);
+	glfwTerminate();
+	return 0;
+}

L00(old)/.gitignore

@@ -0,0 +1 @@
+build/

L00(old)/CMakeLists.txt

@@ -0,0 +1,118 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(L00)
+
+# FOR LAB MACHINES ONLY!
+# DO NOT EDIT
+SET(DEF_DIR_GLM "C:\\c++\\glm")
+SET(DEF_DIR_GLFW "C:\\c++\\glfw-3.2.1")
+SET(DEF_DIR_GLEW "C:\\c++\\glew-2.0.0")
+
+# Use glob to get the list of all source files.
+FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+
+# We don't really need to include header and resource files to build, but it's
+# nice to have them show up in IDEs.
+FILE(GLOB_RECURSE HEADERS "src/*.h")
+FILE(GLOB_RECURSE GLSL "resources/*.glsl")
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS} ${GLSL})
+
+# Get the GLM environment variable. Since GLM is a header-only library, we
+# just need to add it to the include directory.
+SET(GLM_INCLUDE_DIR "$ENV{GLM_INCLUDE_DIR}")
+IF(NOT GLM_INCLUDE_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLM_INCLUDE_DIR to the root directory of your GLM installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLM in ${DEF_DIR_GLM}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLM})
+			MESSAGE(STATUS "Found!")
+			SET(GLM_INCLUDE_DIR ${DEF_DIR_GLM})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLM_INCLUDE_DIR})
+
+# Get the GLFW environment variable. There should be a CMakeLists.txt in the 
+# specified directory.
+SET(GLFW_DIR "$ENV{GLFW_DIR}")
+IF(NOT GLFW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLFW_DIR to the root directory of your GLFW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLFW in ${DEF_DIR_GLFW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLFW})
+			MESSAGE(STATUS "Found!")
+			SET(GLFW_DIR ${DEF_DIR_GLFW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+OPTION(GLFW_BUILD_EXAMPLES "GLFW_BUILD_EXAMPLES" OFF)
+OPTION(GLFW_BUILD_TESTS "GLFW_BUILD_TESTS" OFF)
+OPTION(GLFW_BUILD_DOCS "GLFW_BUILD_DOCS" OFF)
+IF(CMAKE_BUILD_TYPE MATCHES Release)
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/release)
+ELSE()
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/debug)
+ENDIF()
+INCLUDE_DIRECTORIES(${GLFW_DIR}/include)
+TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} glfw ${GLFW_LIBRARIES})
+
+# Get the GLEW environment variable.
+SET(GLEW_DIR "$ENV{GLEW_DIR}")
+IF(NOT GLEW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLEW_DIR to the root directory of your GLEW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLEW in ${DEF_DIR_GLEW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLEW})
+			MESSAGE(STATUS "Found!")
+			SET(GLEW_DIR ${DEF_DIR_GLEW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLEW_DIR}/include)
+IF(WIN32)
+	# With prebuilt binaries
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/Release/Win32/glew32s.lib)
+ELSE()
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/libGLEW.a)
+ENDIF()
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} opengl32.lib)
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+	IF(APPLE)
+		# Add required frameworks for GLFW.
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "-framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo")
+	ELSE()
+		#Link the Linux OpenGL library
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "GL")
+	ENDIF()
+ENDIF()

L00(old)/resources/simple_frag.glsl

@@ -0,0 +1,11 @@
+#version 120
+
+varying vec3 fragNor;
+
+void main()
+{
+	vec3 normal = normalize(fragNor);
+	// Map normal in the range [-1, 1] to color in range [0, 1];
+	vec3 color = 0.5*normal + 0.5;
+	gl_FragColor = vec4(color, 1.0);
+}

L00(old)/resources/simple_vert.glsl

@@ -0,0 +1,12 @@
+#version 120
+attribute vec4 vertPos;
+attribute vec3 vertNor;
+uniform mat4 P;
+uniform mat4 MV;
+varying vec3 fragNor;
+
+void main()
+{
+	gl_Position = P * MV * vertPos;
+	fragNor = (MV * vec4(vertNor, 0.0)).xyz;
+}

L00(old)/src/GLSL.cpp

@@ -0,0 +1,152 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#include "GLSL.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <cassert>
+#include <cstring>
+
+using namespace std;
+
+namespace GLSL {
+
+const char * errorString(GLenum err)
+{
+	switch(err) {
+	case GL_NO_ERROR:
+		return "No error";
+	case GL_INVALID_ENUM:
+		return "Invalid enum";
+	case GL_INVALID_VALUE:
+		return "Invalid value";
+	case GL_INVALID_OPERATION:
+		return "Invalid operation";
+	case GL_STACK_OVERFLOW:
+		return "Stack overflow";
+	case GL_STACK_UNDERFLOW:
+		return "Stack underflow";
+	case GL_OUT_OF_MEMORY:
+		return "Out of memory";
+	default:
+		return "No error";
+	}
+}
+
+void checkVersion()
+{
+	int major, minor;
+	major = minor = 0;
+	const char *verstr = (const char *)glGetString(GL_VERSION);
+	
+	if((verstr == NULL) || (sscanf(verstr, "%d.%d", &major, &minor) != 2)) {
+		printf("Invalid GL_VERSION format %d.%d\n", major, minor);
+	}
+	if(major < 2) {
+		printf("This shader example will not work due to the installed Opengl version, which is %d.%d.\n", major, minor);
+		exit(0);
+	}
+}
+
+void checkError(const char *str)
+{
+	GLenum glErr = glGetError();
+	if(glErr != GL_NO_ERROR) {
+		if(str) {
+			printf("%s: ", str);
+		}
+		printf("GL_ERROR = %s.\n", errorString(glErr));
+		assert(false);
+	}
+}
+
+void printShaderInfoLog(GLuint shader)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetShaderInfoLog(shader, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Shader InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+
+void printProgramInfoLog(GLuint program)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetProgramInfoLog(program, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Program InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+	
+char *textFileRead(const char *fn)
+{
+	FILE *fp;
+	char *content = NULL;
+	int count = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"rt");
+		if(fp != NULL) {
+			fseek(fp, 0, SEEK_END);
+			count = (int)ftell(fp);
+			rewind(fp);
+			if(count > 0) {
+				content = (char *)malloc(sizeof(char) * (count+1));
+				count = (int)fread(content,sizeof(char),count,fp);
+				content[count] = '\0';
+			}
+			fclose(fp);
+		} else {
+			printf("error loading %s\n", fn);
+		}
+	}
+	return content;
+}
+
+int textFileWrite(const char *fn, const char *s)
+{
+	FILE *fp;
+	int status = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"w");
+		if(fp != NULL) {
+			if(fwrite(s,sizeof(char),strlen(s),fp) == strlen(s)) {
+				status = 1;
+			}
+			fclose(fp);
+		}
+	}
+	return(status);
+}
+
+}

L00(old)/src/GLSL.h

@@ -0,0 +1,40 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#pragma once
+#ifndef __GLSL__
+#define __GLSL__
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// For printing out the current file and line number                         //
+///////////////////////////////////////////////////////////////////////////////
+#include <sstream>
+
+template <typename T>
+std::string NumberToString(T x)
+{
+	std::ostringstream ss;
+	ss << x;
+	return ss.str();
+}
+
+#define GET_FILE_LINE (std::string(__FILE__) + ":" + NumberToString(__LINE__)).c_str()
+///////////////////////////////////////////////////////////////////////////////
+
+namespace GLSL {
+
+	void checkVersion();
+	void checkError(const char *str = 0);
+	void printProgramInfoLog(GLuint program);
+	void printShaderInfoLog(GLuint shader);
+	int textFileWrite(const char *filename, const char *s);
+	char *textFileRead(const char *filename);
+}
+
+#endif

L00(old)/src/MatrixStack.cpp

@@ -0,0 +1,114 @@
+#include "MatrixStack.h"
+
+#include <stdio.h>
+#include <cassert>
+#include <vector>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtx/transform.hpp>
+
+using namespace std;
+
+MatrixStack::MatrixStack()
+{
+	mstack = make_shared< stack<glm::mat4> >();
+	mstack->push(glm::mat4(1.0));
+}
+
+MatrixStack::~MatrixStack()
+{
+}
+
+void MatrixStack::pushMatrix()
+{
+	const glm::mat4 &top = mstack->top();
+	mstack->push(top);
+	assert(mstack->size() < 100);
+}
+
+void MatrixStack::popMatrix()
+{
+	assert(!mstack->empty());
+	mstack->pop();
+	// There should always be one matrix left.
+	assert(!mstack->empty());
+}
+
+void MatrixStack::loadIdentity()
+{
+	glm::mat4 &top = mstack->top();
+	top = glm::mat4(1.0);
+}
+
+void MatrixStack::translate(const glm::vec3 &t)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::translate(t);
+}
+
+void MatrixStack::translate(float x, float y, float z)
+{
+	translate(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(const glm::vec3 &s)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::scale(s);
+}
+
+void MatrixStack::scale(float x, float y, float z)
+{
+	scale(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(float s)
+{
+	scale(glm::vec3(s, s, s));
+}
+
+void MatrixStack::rotate(float angle, const glm::vec3 &axis)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::rotate(angle, axis);
+}
+
+void MatrixStack::rotate(float angle, float x, float y, float z)
+{
+	rotate(angle, glm::vec3(x, y, z));
+}
+
+void MatrixStack::multMatrix(const glm::mat4 &matrix)
+{
+	glm::mat4 &top = mstack->top();
+	top *= matrix;
+}
+
+const glm::mat4 &MatrixStack::topMatrix() const
+{
+	return mstack->top();
+}
+
+void MatrixStack::print(const glm::mat4 &mat, const char *name)
+{
+	if(name) {
+		printf("%s = [\n", name);
+	}
+	for(int i = 0; i < 4; ++i) {
+		for(int j = 0; j < 4; ++j) {
+			// mat[j] returns the jth column
+			printf("%- 5.2f ", mat[j][i]);
+		}
+		printf("\n");
+	}
+	if(name) {
+		printf("];");
+	}
+	printf("\n");
+}
+
+void MatrixStack::print(const char *name) const
+{
+	print(mstack->top(), name);
+}

L00(old)/src/MatrixStack.h

@@ -0,0 +1,50 @@
+#pragma once
+#ifndef _MatrixStack_H_
+#define _MatrixStack_H_
+
+#include <stack>
+#include <memory>
+#include <glm/fwd.hpp>
+
+class MatrixStack
+{
+public:
+	MatrixStack();
+	virtual ~MatrixStack();
+	
+	// glPushMatrix(): Copies the current matrix and adds it to the top of the stack
+	void pushMatrix();
+	// glPopMatrix(): Removes the top of the stack and sets the current matrix to be the matrix that is now on top
+	void popMatrix();
+	
+	// glLoadIdentity(): Sets the top matrix to be the identity
+	void loadIdentity();
+	// glMultMatrix(): Right multiplies the top matrix
+	void multMatrix(const glm::mat4 &matrix);
+	
+	// glTranslate(): Right multiplies the top matrix by a translation matrix
+	void translate(const glm::vec3 &trans);
+	void translate(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(const glm::vec3 &scale);
+	void scale(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(float size);
+	// glRotate(): Right multiplies the top matrix by a rotation matrix (angle in radians)
+	void rotate(float angle, const glm::vec3 &axis);
+	void rotate(float angle, float x, float y, float z);
+	
+	// glGet(GL_MODELVIEW_MATRIX): Gets the top matrix
+	const glm::mat4 &topMatrix() const;
+	
+	// Prints out the specified matrix
+	static void print(const glm::mat4 &mat, const char *name = 0);
+	// Prints out the top matrix
+	void print(const char *name = 0) const;
+	
+private:
+	std::shared_ptr< std::stack<glm::mat4> > mstack;
+	
+};
+
+#endif

L00(old)/src/Program.cpp

@@ -0,0 +1,126 @@
+#include "Program.h"
+
+#include <iostream>
+#include <cassert>
+
+#include "GLSL.h"
+
+using namespace std;
+
+Program::Program() :
+	vShaderName(""),
+	fShaderName(""),
+	pid(0),
+	verbose(true)
+{
+	
+}
+
+Program::~Program()
+{
+	
+}
+
+void Program::setShaderNames(const string &v, const string &f)
+{
+	vShaderName = v;
+	fShaderName = f;
+}
+
+bool Program::init()
+{
+	GLint rc;
+	
+	// Create shader handles
+	GLuint VS = glCreateShader(GL_VERTEX_SHADER);
+	GLuint FS = glCreateShader(GL_FRAGMENT_SHADER);
+	
+	// Read shader sources
+	const char *vshader = GLSL::textFileRead(vShaderName.c_str());
+	const char *fshader = GLSL::textFileRead(fShaderName.c_str());
+	glShaderSource(VS, 1, &vshader, NULL);
+	glShaderSource(FS, 1, &fshader, NULL);
+	
+	// Compile vertex shader
+	glCompileShader(VS);
+	glGetShaderiv(VS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(VS);
+			cout << "Error compiling vertex shader " << vShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Compile fragment shader
+	glCompileShader(FS);
+	glGetShaderiv(FS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(FS);
+			cout << "Error compiling fragment shader " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Create the program and link
+	pid = glCreateProgram();
+	glAttachShader(pid, VS);
+	glAttachShader(pid, FS);
+	glLinkProgram(pid);
+	glGetProgramiv(pid, GL_LINK_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printProgramInfoLog(pid);
+			cout << "Error linking shaders " << vShaderName << " and " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	GLSL::checkError(GET_FILE_LINE);
+	return true;
+}
+
+void Program::bind()
+{
+	glUseProgram(pid);
+}
+
+void Program::unbind()
+{
+	glUseProgram(0);
+}
+
+void Program::addAttribute(const string &name)
+{
+	attributes[name] = glGetAttribLocation(pid, name.c_str());
+}
+
+void Program::addUniform(const string &name)
+{
+	uniforms[name] = glGetUniformLocation(pid, name.c_str());
+}
+
+GLint Program::getAttribute(const string &name) const
+{
+	map<string,GLint>::const_iterator attribute = attributes.find(name.c_str());
+	if(attribute == attributes.end()) {
+		if(isVerbose()) {
+			cout << name << " is not an attribute variable" << endl;
+		}
+		return -1;
+	}
+	return attribute->second;
+}
+
+GLint Program::getUniform(const string &name) const
+{
+	map<string,GLint>::const_iterator uniform = uniforms.find(name.c_str());
+	if(uniform == uniforms.end()) {
+		if(isVerbose()) {
+			cout << name << " is not a uniform variable" << endl;
+		}
+		return -1;
+	}
+	return uniform->second;
+}

L00(old)/src/Program.h

@@ -0,0 +1,44 @@
+#pragma  once
+#ifndef __Program__
+#define __Program__
+
+#include <map>
+#include <string>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+/**
+ * An OpenGL Program (vertex and fragment shaders)
+ */
+class Program
+{
+public:
+	Program();
+	virtual ~Program();
+	
+	void setVerbose(bool v) { verbose = v; }
+	bool isVerbose() const { return verbose; }
+	
+	void setShaderNames(const std::string &v, const std::string &f);
+	virtual bool init();
+	virtual void bind();
+	virtual void unbind();
+
+	void addAttribute(const std::string &name);
+	void addUniform(const std::string &name);
+	GLint getAttribute(const std::string &name) const;
+	GLint getUniform(const std::string &name) const;
+	
+protected:
+	std::string vShaderName;
+	std::string fShaderName;
+	
+private:
+	GLuint pid;
+	std::map<std::string,GLint> attributes;
+	std::map<std::string,GLint> uniforms;
+	bool verbose;
+};
+
+#endif

L00(old)/src/Shape.cpp

@@ -0,0 +1,135 @@
+#include "Shape.h"
+#include <iostream>
+
+#include "GLSL.h"
+#include "Program.h"
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "tiny_obj_loader.h"
+
+using namespace std;
+
+Shape::Shape() :
+	posBufID(0),
+	norBufID(0),
+	texBufID(0)
+{
+}
+
+Shape::~Shape()
+{
+}
+
+void Shape::loadMesh(const string &meshName)
+{
+	// Load geometry
+	tinyobj::attrib_t attrib;
+	std::vector<tinyobj::shape_t> shapes;
+	std::vector<tinyobj::material_t> materials;
+	string errStr;
+	bool rc = tinyobj::LoadObj(&attrib, &shapes, &materials, &errStr, meshName.c_str());
+	if(!rc) {
+		cerr << errStr << endl;
+	} else {
+		// Some OBJ files have different indices for vertex positions, normals,
+		// and texture coordinates. For example, a cube corner vertex may have
+		// three different normals. Here, we are going to duplicate all such
+		// vertices.
+		// Loop over shapes
+		for(size_t s = 0; s < shapes.size(); s++) {
+			// Loop over faces (polygons)
+			size_t index_offset = 0;
+			for(size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+				size_t fv = shapes[s].mesh.num_face_vertices[f];
+				// Loop over vertices in the face.
+				for(size_t v = 0; v < fv; v++) {
+					// access to vertex
+					tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+0]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+1]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+2]);
+					if(!attrib.normals.empty()) {
+						norBuf.push_back(attrib.normals[3*idx.normal_index+0]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+1]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+2]);
+					}
+					if(!attrib.texcoords.empty()) {
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+0]);
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+1]);
+					}
+				}
+				index_offset += fv;
+				// per-face material (IGNORE)
+				shapes[s].mesh.material_ids[f];
+			}
+		}
+	}
+}
+
+void Shape::init()
+{
+	// Send the position array to the GPU
+	glGenBuffers(1, &posBufID);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glBufferData(GL_ARRAY_BUFFER, posBuf.size()*sizeof(float), &posBuf[0], GL_STATIC_DRAW);
+	
+	// Send the normal array to the GPU
+	if(!norBuf.empty()) {
+		glGenBuffers(1, &norBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glBufferData(GL_ARRAY_BUFFER, norBuf.size()*sizeof(float), &norBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Send the texture array to the GPU
+	if(!texBuf.empty()) {
+		glGenBuffers(1, &texBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glBufferData(GL_ARRAY_BUFFER, texBuf.size()*sizeof(float), &texBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Unbind the arrays
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+void Shape::draw(const shared_ptr<Program> prog) const
+{
+	// Bind position buffer
+	int h_pos = prog->getAttribute("vertPos");
+	glEnableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glVertexAttribPointer(h_pos, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	
+	// Bind normal buffer
+	int h_nor = prog->getAttribute("vertNor");
+	if(h_nor != -1 && norBufID != 0) {
+		glEnableVertexAttribArray(h_nor);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glVertexAttribPointer(h_nor, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Bind texcoords buffer
+	int h_tex = prog->getAttribute("vertTex");
+	if(h_tex != -1 && texBufID != 0) {
+		glEnableVertexAttribArray(h_tex);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glVertexAttribPointer(h_tex, 2, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Draw
+	int count = posBuf.size()/3; // number of indices to be rendered
+	glDrawArrays(GL_TRIANGLES, 0, count);
+	
+	// Disable and unbind
+	if(h_tex != -1) {
+		glDisableVertexAttribArray(h_tex);
+	}
+	if(h_nor != -1) {
+		glDisableVertexAttribArray(h_nor);
+	}
+	glDisableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}

L00(old)/src/Shape.h

@@ -0,0 +1,36 @@
+#pragma once
+#ifndef _SHAPE_H_
+#define _SHAPE_H_
+
+#include <string>
+#include <vector>
+#include <memory>
+
+class Program;
+
+/**
+ * A shape defined by a list of triangles
+ * - posBuf should be of length 3*ntris
+ * - norBuf should be of length 3*ntris (if normals are available)
+ * - texBuf should be of length 2*ntris (if texture coords are available)
+ * posBufID, norBufID, and texBufID are OpenGL buffer identifiers.
+ */
+class Shape
+{
+public:
+	Shape();
+	virtual ~Shape();
+	void loadMesh(const std::string &meshName);
+	void init();
+	void draw(const std::shared_ptr<Program> prog) const;
+	
+private:
+	std::vector<float> posBuf;
+	std::vector<float> norBuf;
+	std::vector<float> texBuf;
+	unsigned posBufID;
+	unsigned norBufID;
+	unsigned texBufID;
+};
+
+#endif

L00(old)/src/main.cpp

@@ -0,0 +1,152 @@
+#define _USE_MATH_DEFINES
+#include <cmath>
+#include <iostream>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+
+#include "GLSL.h"
+#include "MatrixStack.h"
+#include "Program.h"
+#include "Shape.h"
+
+using namespace std;
+
+GLFWwindow *window; // Main application window
+string RES_DIR = ""; // Where data files live
+shared_ptr<Program> prog;
+shared_ptr<Shape> shape;
+
+static void error_callback(int error, const char *description)
+{
+	cerr << description << endl;
+}
+
+static void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods)
+{
+	if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
+		glfwSetWindowShouldClose(window, GL_TRUE);
+	}
+}
+
+static void init()
+{
+	GLSL::checkVersion();
+
+	// Set background color.
+	glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+	// Enable z-buffer test.
+	glEnable(GL_DEPTH_TEST);
+
+	// Initialize mesh.
+	shape = make_shared<Shape>();
+	shape->loadMesh(RES_DIR + "teapot.obj");
+	shape->init();
+
+	// Initialize the GLSL program.
+	prog = make_shared<Program>();
+	prog->setVerbose(false); // Set this to true when debugging.
+	prog->setShaderNames(RES_DIR + "simple_vert.glsl", RES_DIR + "simple_frag.glsl");
+	prog->init();
+	prog->addUniform("P");
+	prog->addUniform("MV");
+	prog->addAttribute("vertPos");
+	prog->addAttribute("vertNor");
+
+	// If there were any OpenGL errors, this will print something.
+	// You can intersperse this line in your code to find the exact location
+	// of your OpenGL error.
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+static void render()
+{
+	// Get current frame buffer size.
+	int width, height;
+	glfwGetFramebufferSize(window, &width, &height);
+	float aspect = width/(float)height;
+	glViewport(0, 0, width, height);
+
+	// Clear framebuffer.
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	// Create matrix stacks.
+	auto P = make_shared<MatrixStack>();
+	auto MV = make_shared<MatrixStack>();
+	// Apply projection.
+	P->pushMatrix();
+	P->multMatrix(glm::perspective((float)(45.0*M_PI/180.0), aspect, 0.01f, 100.0f));
+	// Apply camera transform.
+	MV->pushMatrix();
+	MV->translate(glm::vec3(0, -0.5, -3));
+	
+	// Draw mesh using GLSL.
+	prog->bind();
+	glUniformMatrix4fv(prog->getUniform("P"), 1, GL_FALSE, &P->topMatrix()[0][0]);
+	glUniformMatrix4fv(prog->getUniform("MV"), 1, GL_FALSE, &MV->topMatrix()[0][0]);
+	shape->draw(prog);
+	prog->unbind();
+
+	// Pop matrix stacks.
+	MV->popMatrix();
+	P->popMatrix();
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+int main(int argc, char **argv)
+{
+	if(argc < 2) {
+		cout << "Please specify the resource directory." << endl;
+		return 0;
+	}
+	RES_DIR = argv[1] + string("/");
+
+	// Set error callback.
+	glfwSetErrorCallback(error_callback);
+	// Initialize the library.
+	if(!glfwInit()) {
+		return -1;
+	}
+	// Create a windowed mode window and its OpenGL context.
+	window = glfwCreateWindow(640, 480, "YOUR NAME", NULL, NULL);
+	if(!window) {
+		glfwTerminate();
+		return -1;
+	}
+	// Make the window's context current.
+	glfwMakeContextCurrent(window);
+	// Initialize GLEW.
+	glewExperimental = true;
+	if(glewInit() != GLEW_OK) {
+		cerr << "Failed to initialize GLEW" << endl;
+		return -1;
+	}
+	glGetError(); // A bug in glewInit() causes an error that we can safely ignore.
+	cout << "OpenGL version: " << glGetString(GL_VERSION) << endl;
+	cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << endl;
+	// Set vsync.
+	glfwSwapInterval(1);
+	// Set keyboard callback.
+	glfwSetKeyCallback(window, key_callback);
+	// Initialize scene.
+	init();
+	// Loop until the user closes the window.
+	while(!glfwWindowShouldClose(window)) {
+		// Render scene.
+		render();
+		// Swap front and back buffers.
+		glfwSwapBuffers(window);
+		// Poll for and process events.
+		glfwPollEvents();
+	}
+	// Quit program.
+	glfwDestroyWindow(window);
+	glfwTerminate();
+	return 0;
+}

L00/.gitignore

@@ -0,0 +1 @@
+build/

L00/CMakeLists.txt

@@ -0,0 +1,118 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(L00)
+
+# FOR LAB MACHINES ONLY!
+# DO NOT EDIT
+SET(DEF_DIR_GLM "C:\\c++\\glm")
+SET(DEF_DIR_GLFW "C:\\c++\\glfw-3.2.1")
+SET(DEF_DIR_GLEW "C:\\c++\\glew-2.0.0")
+
+# Use glob to get the list of all source files.
+FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+
+# We don't really need to include header and resource files to build, but it's
+# nice to have them show up in IDEs.
+FILE(GLOB_RECURSE HEADERS "src/*.h")
+FILE(GLOB_RECURSE GLSL "resources/*.glsl")
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS} ${GLSL})
+
+# Get the GLM environment variable. Since GLM is a header-only library, we
+# just need to add it to the include directory.
+SET(GLM_INCLUDE_DIR "$ENV{GLM_INCLUDE_DIR}")
+IF(NOT GLM_INCLUDE_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLM_INCLUDE_DIR to the root directory of your GLM installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLM in ${DEF_DIR_GLM}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLM})
+			MESSAGE(STATUS "Found!")
+			SET(GLM_INCLUDE_DIR ${DEF_DIR_GLM})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLM_INCLUDE_DIR})
+
+# Get the GLFW environment variable. There should be a CMakeLists.txt in the 
+# specified directory.
+SET(GLFW_DIR "$ENV{GLFW_DIR}")
+IF(NOT GLFW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLFW_DIR to the root directory of your GLFW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLFW in ${DEF_DIR_GLFW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLFW})
+			MESSAGE(STATUS "Found!")
+			SET(GLFW_DIR ${DEF_DIR_GLFW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+OPTION(GLFW_BUILD_EXAMPLES "GLFW_BUILD_EXAMPLES" OFF)
+OPTION(GLFW_BUILD_TESTS "GLFW_BUILD_TESTS" OFF)
+OPTION(GLFW_BUILD_DOCS "GLFW_BUILD_DOCS" OFF)
+IF(CMAKE_BUILD_TYPE MATCHES Release)
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/release)
+ELSE()
+	ADD_SUBDIRECTORY(${GLFW_DIR} ${GLFW_DIR}/debug)
+ENDIF()
+INCLUDE_DIRECTORIES(${GLFW_DIR}/include)
+TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} glfw ${GLFW_LIBRARIES})
+
+# Get the GLEW environment variable.
+SET(GLEW_DIR "$ENV{GLEW_DIR}")
+IF(NOT GLEW_DIR)
+	# The environment variable was not set
+	SET(ERR_MSG "Please point the environment variable GLEW_DIR to the root directory of your GLEW installation.")
+	IF(WIN32)
+		# On Windows, try the default location
+		MESSAGE(STATUS "Looking for GLEW in ${DEF_DIR_GLEW}")
+		IF(IS_DIRECTORY ${DEF_DIR_GLEW})
+			MESSAGE(STATUS "Found!")
+			SET(GLEW_DIR ${DEF_DIR_GLEW})
+		ELSE()
+			MESSAGE(FATAL_ERROR ${ERR_MSG})
+		ENDIF()
+	ELSE()
+		MESSAGE(FATAL_ERROR ${ERR_MSG})
+	ENDIF()
+ENDIF()
+INCLUDE_DIRECTORIES(${GLEW_DIR}/include)
+IF(WIN32)
+	# With prebuilt binaries
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/Release/Win32/glew32s.lib)
+ELSE()
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${GLEW_DIR}/lib/libGLEW.a)
+ENDIF()
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+	TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} opengl32.lib)
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+	IF(APPLE)
+		# Add required frameworks for GLFW.
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "-framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo")
+	ELSE()
+		#Link the Linux OpenGL library
+		TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} "GL")
+	ENDIF()
+ENDIF()

L00/resources/simple_frag.glsl

@@ -0,0 +1,11 @@
+#version 120
+
+varying vec3 vNor;
+
+void main()
+{
+	vec3 normal = normalize(vNor);
+	// Map normal in the range [-1, 1] to color in range [0, 1];
+	vec3 color = 0.5*normal + 0.5;
+	gl_FragColor = vec4(color, 1.0);
+}

L00/resources/simple_vert.glsl

@@ -0,0 +1,12 @@
+#version 120
+attribute vec4 aPos;
+attribute vec3 aNor;
+uniform mat4 P;
+uniform mat4 MV;
+varying vec3 vNor;
+
+void main()
+{
+	gl_Position = P * MV * aPos;
+	vNor = (MV * vec4(aNor, 0.0)).xyz;
+}

L00/src/GLSL.cpp

@@ -0,0 +1,152 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#include "GLSL.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <cassert>
+#include <cstring>
+
+using namespace std;
+
+namespace GLSL {
+
+const char * errorString(GLenum err)
+{
+	switch(err) {
+	case GL_NO_ERROR:
+		return "No error";
+	case GL_INVALID_ENUM:
+		return "Invalid enum";
+	case GL_INVALID_VALUE:
+		return "Invalid value";
+	case GL_INVALID_OPERATION:
+		return "Invalid operation";
+	case GL_STACK_OVERFLOW:
+		return "Stack overflow";
+	case GL_STACK_UNDERFLOW:
+		return "Stack underflow";
+	case GL_OUT_OF_MEMORY:
+		return "Out of memory";
+	default:
+		return "No error";
+	}
+}
+
+void checkVersion()
+{
+	int major, minor;
+	major = minor = 0;
+	const char *verstr = (const char *)glGetString(GL_VERSION);
+	
+	if((verstr == NULL) || (sscanf(verstr, "%d.%d", &major, &minor) != 2)) {
+		printf("Invalid GL_VERSION format %d.%d\n", major, minor);
+	}
+	if(major < 2) {
+		printf("This shader example will not work due to the installed Opengl version, which is %d.%d.\n", major, minor);
+		exit(0);
+	}
+}
+
+void checkError(const char *str)
+{
+	GLenum glErr = glGetError();
+	if(glErr != GL_NO_ERROR) {
+		if(str) {
+			printf("%s: ", str);
+		}
+		printf("GL_ERROR = %s.\n", errorString(glErr));
+		assert(false);
+	}
+}
+
+void printShaderInfoLog(GLuint shader)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetShaderInfoLog(shader, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Shader InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+
+void printProgramInfoLog(GLuint program)
+{
+	GLint infologLength = 0;
+	GLint charsWritten  = 0;
+	GLchar *infoLog = 0;
+	
+	checkError(GET_FILE_LINE);
+	glGetProgramiv(program, GL_INFO_LOG_LENGTH, &infologLength);
+	checkError(GET_FILE_LINE);
+	
+	if(infologLength > 0) {
+		infoLog = (GLchar *)malloc(infologLength);
+		if(infoLog == NULL) {
+			puts("ERROR: Could not allocate InfoLog buffer");
+			exit(1);
+		}
+		glGetProgramInfoLog(program, infologLength, &charsWritten, infoLog);
+		checkError(GET_FILE_LINE);
+		printf("Program InfoLog:\n%s\n\n", infoLog);
+		free(infoLog);
+	}
+}
+	
+char *textFileRead(const char *fn)
+{
+	FILE *fp;
+	char *content = NULL;
+	int count = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"rt");
+		if(fp != NULL) {
+			fseek(fp, 0, SEEK_END);
+			count = (int)ftell(fp);
+			rewind(fp);
+			if(count > 0) {
+				content = (char *)malloc(sizeof(char) * (count+1));
+				count = (int)fread(content,sizeof(char),count,fp);
+				content[count] = '\0';
+			}
+			fclose(fp);
+		} else {
+			printf("error loading %s\n", fn);
+		}
+	}
+	return content;
+}
+
+int textFileWrite(const char *fn, const char *s)
+{
+	FILE *fp;
+	int status = 0;
+	if(fn != NULL) {
+		fp = fopen(fn,"w");
+		if(fp != NULL) {
+			if(fwrite(s,sizeof(char),strlen(s),fp) == strlen(s)) {
+				status = 1;
+			}
+			fclose(fp);
+		}
+	}
+	return(status);
+}
+
+}

L00/src/GLSL.h

@@ -0,0 +1,40 @@
+//
+//    Many useful helper functions for GLSL shaders - gleaned from various sources including orange book
+//    Created by zwood on 2/21/10.
+//    Modified by sueda 10/15/15.
+//
+
+#pragma once
+#ifndef __GLSL__
+#define __GLSL__
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// For printing out the current file and line number                         //
+///////////////////////////////////////////////////////////////////////////////
+#include <sstream>
+
+template <typename T>
+std::string NumberToString(T x)
+{
+	std::ostringstream ss;
+	ss << x;
+	return ss.str();
+}
+
+#define GET_FILE_LINE (std::string(__FILE__) + ":" + NumberToString(__LINE__)).c_str()
+///////////////////////////////////////////////////////////////////////////////
+
+namespace GLSL {
+
+	void checkVersion();
+	void checkError(const char *str = 0);
+	void printProgramInfoLog(GLuint program);
+	void printShaderInfoLog(GLuint shader);
+	int textFileWrite(const char *filename, const char *s);
+	char *textFileRead(const char *filename);
+}
+
+#endif

L00/src/MatrixStack.cpp

@@ -0,0 +1,114 @@
+#include "MatrixStack.h"
+
+#include <stdio.h>
+#include <cassert>
+#include <vector>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtx/transform.hpp>
+
+using namespace std;
+
+MatrixStack::MatrixStack()
+{
+	mstack = make_shared< stack<glm::mat4> >();
+	mstack->push(glm::mat4(1.0));
+}
+
+MatrixStack::~MatrixStack()
+{
+}
+
+void MatrixStack::pushMatrix()
+{
+	const glm::mat4 &top = mstack->top();
+	mstack->push(top);
+	assert(mstack->size() < 100);
+}
+
+void MatrixStack::popMatrix()
+{
+	assert(!mstack->empty());
+	mstack->pop();
+	// There should always be one matrix left.
+	assert(!mstack->empty());
+}
+
+void MatrixStack::loadIdentity()
+{
+	glm::mat4 &top = mstack->top();
+	top = glm::mat4(1.0);
+}
+
+void MatrixStack::translate(const glm::vec3 &t)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::translate(t);
+}
+
+void MatrixStack::translate(float x, float y, float z)
+{
+	translate(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(const glm::vec3 &s)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::scale(s);
+}
+
+void MatrixStack::scale(float x, float y, float z)
+{
+	scale(glm::vec3(x, y, z));
+}
+
+void MatrixStack::scale(float s)
+{
+	scale(glm::vec3(s, s, s));
+}
+
+void MatrixStack::rotate(float angle, const glm::vec3 &axis)
+{
+	glm::mat4 &top = mstack->top();
+	top *= glm::rotate(angle, axis);
+}
+
+void MatrixStack::rotate(float angle, float x, float y, float z)
+{
+	rotate(angle, glm::vec3(x, y, z));
+}
+
+void MatrixStack::multMatrix(const glm::mat4 &matrix)
+{
+	glm::mat4 &top = mstack->top();
+	top *= matrix;
+}
+
+const glm::mat4 &MatrixStack::topMatrix() const
+{
+	return mstack->top();
+}
+
+void MatrixStack::print(const glm::mat4 &mat, const char *name)
+{
+	if(name) {
+		printf("%s = [\n", name);
+	}
+	for(int i = 0; i < 4; ++i) {
+		for(int j = 0; j < 4; ++j) {
+			// mat[j] returns the jth column
+			printf("%- 5.2f ", mat[j][i]);
+		}
+		printf("\n");
+	}
+	if(name) {
+		printf("];");
+	}
+	printf("\n");
+}
+
+void MatrixStack::print(const char *name) const
+{
+	print(mstack->top(), name);
+}

L00/src/MatrixStack.h

@@ -0,0 +1,50 @@
+#pragma once
+#ifndef _MatrixStack_H_
+#define _MatrixStack_H_
+
+#include <stack>
+#include <memory>
+#include <glm/fwd.hpp>
+
+class MatrixStack
+{
+public:
+	MatrixStack();
+	virtual ~MatrixStack();
+	
+	// glPushMatrix(): Copies the current matrix and adds it to the top of the stack
+	void pushMatrix();
+	// glPopMatrix(): Removes the top of the stack and sets the current matrix to be the matrix that is now on top
+	void popMatrix();
+	
+	// glLoadIdentity(): Sets the top matrix to be the identity
+	void loadIdentity();
+	// glMultMatrix(): Right multiplies the top matrix
+	void multMatrix(const glm::mat4 &matrix);
+	
+	// glTranslate(): Right multiplies the top matrix by a translation matrix
+	void translate(const glm::vec3 &trans);
+	void translate(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(const glm::vec3 &scale);
+	void scale(float x, float y, float z);
+	// glScale(): Right multiplies the top matrix by a scaling matrix
+	void scale(float size);
+	// glRotate(): Right multiplies the top matrix by a rotation matrix (angle in radians)
+	void rotate(float angle, const glm::vec3 &axis);
+	void rotate(float angle, float x, float y, float z);
+	
+	// glGet(GL_MODELVIEW_MATRIX): Gets the top matrix
+	const glm::mat4 &topMatrix() const;
+	
+	// Prints out the specified matrix
+	static void print(const glm::mat4 &mat, const char *name = 0);
+	// Prints out the top matrix
+	void print(const char *name = 0) const;
+	
+private:
+	std::shared_ptr< std::stack<glm::mat4> > mstack;
+	
+};
+
+#endif

L00/src/Program.cpp

@@ -0,0 +1,126 @@
+#include "Program.h"
+
+#include <iostream>
+#include <cassert>
+
+#include "GLSL.h"
+
+using namespace std;
+
+Program::Program() :
+	vShaderName(""),
+	fShaderName(""),
+	pid(0),
+	verbose(true)
+{
+	
+}
+
+Program::~Program()
+{
+	
+}
+
+void Program::setShaderNames(const string &v, const string &f)
+{
+	vShaderName = v;
+	fShaderName = f;
+}
+
+bool Program::init()
+{
+	GLint rc;
+	
+	// Create shader handles
+	GLuint VS = glCreateShader(GL_VERTEX_SHADER);
+	GLuint FS = glCreateShader(GL_FRAGMENT_SHADER);
+	
+	// Read shader sources
+	const char *vshader = GLSL::textFileRead(vShaderName.c_str());
+	const char *fshader = GLSL::textFileRead(fShaderName.c_str());
+	glShaderSource(VS, 1, &vshader, NULL);
+	glShaderSource(FS, 1, &fshader, NULL);
+	
+	// Compile vertex shader
+	glCompileShader(VS);
+	glGetShaderiv(VS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(VS);
+			cout << "Error compiling vertex shader " << vShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Compile fragment shader
+	glCompileShader(FS);
+	glGetShaderiv(FS, GL_COMPILE_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printShaderInfoLog(FS);
+			cout << "Error compiling fragment shader " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	// Create the program and link
+	pid = glCreateProgram();
+	glAttachShader(pid, VS);
+	glAttachShader(pid, FS);
+	glLinkProgram(pid);
+	glGetProgramiv(pid, GL_LINK_STATUS, &rc);
+	if(!rc) {
+		if(isVerbose()) {
+			GLSL::printProgramInfoLog(pid);
+			cout << "Error linking shaders " << vShaderName << " and " << fShaderName << endl;
+		}
+		return false;
+	}
+	
+	GLSL::checkError(GET_FILE_LINE);
+	return true;
+}
+
+void Program::bind()
+{
+	glUseProgram(pid);
+}
+
+void Program::unbind()
+{
+	glUseProgram(0);
+}
+
+void Program::addAttribute(const string &name)
+{
+	attributes[name] = glGetAttribLocation(pid, name.c_str());
+}
+
+void Program::addUniform(const string &name)
+{
+	uniforms[name] = glGetUniformLocation(pid, name.c_str());
+}
+
+GLint Program::getAttribute(const string &name) const
+{
+	map<string,GLint>::const_iterator attribute = attributes.find(name.c_str());
+	if(attribute == attributes.end()) {
+		if(isVerbose()) {
+			cout << name << " is not an attribute variable" << endl;
+		}
+		return -1;
+	}
+	return attribute->second;
+}
+
+GLint Program::getUniform(const string &name) const
+{
+	map<string,GLint>::const_iterator uniform = uniforms.find(name.c_str());
+	if(uniform == uniforms.end()) {
+		if(isVerbose()) {
+			cout << name << " is not a uniform variable" << endl;
+		}
+		return -1;
+	}
+	return uniform->second;
+}

L00/src/Program.h

@@ -0,0 +1,44 @@
+#pragma  once
+#ifndef __Program__
+#define __Program__
+
+#include <map>
+#include <string>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+/**
+ * An OpenGL Program (vertex and fragment shaders)
+ */
+class Program
+{
+public:
+	Program();
+	virtual ~Program();
+	
+	void setVerbose(bool v) { verbose = v; }
+	bool isVerbose() const { return verbose; }
+	
+	void setShaderNames(const std::string &v, const std::string &f);
+	virtual bool init();
+	virtual void bind();
+	virtual void unbind();
+
+	void addAttribute(const std::string &name);
+	void addUniform(const std::string &name);
+	GLint getAttribute(const std::string &name) const;
+	GLint getUniform(const std::string &name) const;
+	
+protected:
+	std::string vShaderName;
+	std::string fShaderName;
+	
+private:
+	GLuint pid;
+	std::map<std::string,GLint> attributes;
+	std::map<std::string,GLint> uniforms;
+	bool verbose;
+};
+
+#endif

L00/src/Shape.cpp

@@ -0,0 +1,135 @@
+#include "Shape.h"
+#include <iostream>
+
+#include "GLSL.h"
+#include "Program.h"
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "tiny_obj_loader.h"
+
+using namespace std;
+
+Shape::Shape() :
+	posBufID(0),
+	norBufID(0),
+	texBufID(0)
+{
+}
+
+Shape::~Shape()
+{
+}
+
+void Shape::loadMesh(const string &meshName)
+{
+	// Load geometry
+	tinyobj::attrib_t attrib;
+	std::vector<tinyobj::shape_t> shapes;
+	std::vector<tinyobj::material_t> materials;
+	string errStr;
+	bool rc = tinyobj::LoadObj(&attrib, &shapes, &materials, &errStr, meshName.c_str());
+	if(!rc) {
+		cerr << errStr << endl;
+	} else {
+		// Some OBJ files have different indices for vertex positions, normals,
+		// and texture coordinates. For example, a cube corner vertex may have
+		// three different normals. Here, we are going to duplicate all such
+		// vertices.
+		// Loop over shapes
+		for(size_t s = 0; s < shapes.size(); s++) {
+			// Loop over faces (polygons)
+			size_t index_offset = 0;
+			for(size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+				size_t fv = shapes[s].mesh.num_face_vertices[f];
+				// Loop over vertices in the face.
+				for(size_t v = 0; v < fv; v++) {
+					// access to vertex
+					tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+0]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+1]);
+					posBuf.push_back(attrib.vertices[3*idx.vertex_index+2]);
+					if(!attrib.normals.empty()) {
+						norBuf.push_back(attrib.normals[3*idx.normal_index+0]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+1]);
+						norBuf.push_back(attrib.normals[3*idx.normal_index+2]);
+					}
+					if(!attrib.texcoords.empty()) {
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+0]);
+						texBuf.push_back(attrib.texcoords[2*idx.texcoord_index+1]);
+					}
+				}
+				index_offset += fv;
+				// per-face material (IGNORE)
+				shapes[s].mesh.material_ids[f];
+			}
+		}
+	}
+}
+
+void Shape::init()
+{
+	// Send the position array to the GPU
+	glGenBuffers(1, &posBufID);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glBufferData(GL_ARRAY_BUFFER, posBuf.size()*sizeof(float), &posBuf[0], GL_STATIC_DRAW);
+	
+	// Send the normal array to the GPU
+	if(!norBuf.empty()) {
+		glGenBuffers(1, &norBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glBufferData(GL_ARRAY_BUFFER, norBuf.size()*sizeof(float), &norBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Send the texture array to the GPU
+	if(!texBuf.empty()) {
+		glGenBuffers(1, &texBufID);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glBufferData(GL_ARRAY_BUFFER, texBuf.size()*sizeof(float), &texBuf[0], GL_STATIC_DRAW);
+	}
+	
+	// Unbind the arrays
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+void Shape::draw(const shared_ptr<Program> prog) const
+{
+	// Bind position buffer
+	int h_pos = prog->getAttribute("aPos");
+	glEnableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, posBufID);
+	glVertexAttribPointer(h_pos, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	
+	// Bind normal buffer
+	int h_nor = prog->getAttribute("aNor");
+	if(h_nor != -1 && norBufID != 0) {
+		glEnableVertexAttribArray(h_nor);
+		glBindBuffer(GL_ARRAY_BUFFER, norBufID);
+		glVertexAttribPointer(h_nor, 3, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Bind texcoords buffer
+	int h_tex = prog->getAttribute("aTex");
+	if(h_tex != -1 && texBufID != 0) {
+		glEnableVertexAttribArray(h_tex);
+		glBindBuffer(GL_ARRAY_BUFFER, texBufID);
+		glVertexAttribPointer(h_tex, 2, GL_FLOAT, GL_FALSE, 0, (const void *)0);
+	}
+	
+	// Draw
+	int count = posBuf.size()/3; // number of indices to be rendered
+	glDrawArrays(GL_TRIANGLES, 0, count);
+	
+	// Disable and unbind
+	if(h_tex != -1) {
+		glDisableVertexAttribArray(h_tex);
+	}
+	if(h_nor != -1) {
+		glDisableVertexAttribArray(h_nor);
+	}
+	glDisableVertexAttribArray(h_pos);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+	
+	GLSL::checkError(GET_FILE_LINE);
+}

L00/src/Shape.h

@@ -0,0 +1,36 @@
+#pragma once
+#ifndef _SHAPE_H_
+#define _SHAPE_H_
+
+#include <string>
+#include <vector>
+#include <memory>
+
+class Program;
+
+/**
+ * A shape defined by a list of triangles
+ * - posBuf should be of length 3*ntris
+ * - norBuf should be of length 3*ntris (if normals are available)
+ * - texBuf should be of length 2*ntris (if texture coords are available)
+ * posBufID, norBufID, and texBufID are OpenGL buffer identifiers.
+ */
+class Shape
+{
+public:
+	Shape();
+	virtual ~Shape();
+	void loadMesh(const std::string &meshName);
+	void init();
+	void draw(const std::shared_ptr<Program> prog) const;
+	
+private:
+	std::vector<float> posBuf;
+	std::vector<float> norBuf;
+	std::vector<float> texBuf;
+	unsigned posBufID;
+	unsigned norBufID;
+	unsigned texBufID;
+};
+
+#endif

L00/src/main.cpp

@@ -0,0 +1,152 @@
+#define _USE_MATH_DEFINES
+#include <cmath>
+#include <iostream>
+
+#define GLEW_STATIC
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#define GLM_FORCE_RADIANS
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+
+#include "GLSL.h"
+#include "MatrixStack.h"
+#include "Program.h"
+#include "Shape.h"
+
+using namespace std;
+
+GLFWwindow *window; // Main application window
+string RES_DIR = ""; // Where data files live
+shared_ptr<Program> prog;
+shared_ptr<Shape> shape;
+
+static void error_callback(int error, const char *description)
+{
+	cerr << description << endl;
+}
+
+static void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods)
+{
+	if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
+		glfwSetWindowShouldClose(window, GL_TRUE);
+	}
+}
+
+static void init()
+{
+	GLSL::checkVersion();
+
+	// Set background color.
+	glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+	// Enable z-buffer test.
+	glEnable(GL_DEPTH_TEST);
+
+	// Initialize mesh.
+	shape = make_shared<Shape>();
+	shape->loadMesh(RES_DIR + "teapot.obj");
+	shape->init();
+	
+	// Initialize the GLSL program.
+	prog = make_shared<Program>();
+	prog->setVerbose(false); // Set this to true when debugging.
+	prog->setShaderNames(RES_DIR + "simple_vert.glsl", RES_DIR + "simple_frag.glsl");
+	prog->init();
+	prog->addUniform("P");
+	prog->addUniform("MV");
+	prog->addAttribute("aPos");
+	prog->addAttribute("aNor");
+	
+	// If there were any OpenGL errors, this will print something.
+	// You can intersperse this line in your code to find the exact location
+	// of your OpenGL error.
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+static void render()
+{
+	// Get current frame buffer size.
+	int width, height;
+	glfwGetFramebufferSize(window, &width, &height);
+	float aspect = width/(float)height;
+	glViewport(0, 0, width, height);
+
+	// Clear framebuffer.
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	// Create matrix stacks.
+	auto P = make_shared<MatrixStack>();
+	auto MV = make_shared<MatrixStack>();
+	// Apply projection.
+	P->pushMatrix();
+	P->multMatrix(glm::perspective((float)(45.0*M_PI/180.0), aspect, 0.01f, 100.0f));
+	// Apply camera transform.
+	MV->pushMatrix();
+	MV->translate(glm::vec3(0, -0.5, -3));
+	
+	// Draw mesh using GLSL.
+	prog->bind();
+	glUniformMatrix4fv(prog->getUniform("P"), 1, GL_FALSE, &P->topMatrix()[0][0]);
+	glUniformMatrix4fv(prog->getUniform("MV"), 1, GL_FALSE, &MV->topMatrix()[0][0]);
+	shape->draw(prog);
+	prog->unbind();
+
+	// Pop matrix stacks.
+	MV->popMatrix();
+	P->popMatrix();
+	
+	GLSL::checkError(GET_FILE_LINE);
+}
+
+int main(int argc, char **argv)
+{
+	if(argc < 2) {
+		cout << "Please specify the resource directory." << endl;
+		return 0;
+	}
+	RES_DIR = argv[1] + string("/");
+
+	// Set error callback.
+	glfwSetErrorCallback(error_callback);
+	// Initialize the library.
+	if(!glfwInit()) {
+		return -1;
+	}
+	// Create a windowed mode window and its OpenGL context.
+	window = glfwCreateWindow(640, 480, "YOUR NAME", NULL, NULL);
+	if(!window) {
+		glfwTerminate();
+		return -1;
+	}
+	// Make the window's context current.
+	glfwMakeContextCurrent(window);
+	// Initialize GLEW.
+	glewExperimental = true;
+	if(glewInit() != GLEW_OK) {
+		cerr << "Failed to initialize GLEW" << endl;
+		return -1;
+	}
+	glGetError(); // A bug in glewInit() causes an error that we can safely ignore.
+	cout << "OpenGL version: " << glGetString(GL_VERSION) << endl;
+	cout << "GLSL version: " << glGetString(GL_SHADING_LANGUAGE_VERSION) << endl;
+	// Set vsync.
+	glfwSwapInterval(1);
+	// Set keyboard callback.
+	glfwSetKeyCallback(window, key_callback);
+	// Initialize scene.
+	init();
+	// Loop until the user closes the window.
+	while(!glfwWindowShouldClose(window)) {
+		// Render scene.
+		render();
+		// Swap front and back buffers.
+		glfwSwapBuffers(window);
+		// Poll for and process events.
+		glfwPollEvents();
+	}
+	// Quit program.
+	glfwDestroyWindow(window);
+	glfwTerminate();
+	return 0;
+}

L01/.gitignore

@@ -0,0 +1 @@
+build/

L01/CMakeLists.txt

@@ -0,0 +1,34 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+
+# Name of the project
+PROJECT(L01)
+
+# Is this the solution?
+# Override with `cmake -DSOL=ON ..`
+OPTION(SOL "Solution" OFF)
+
+# Use glob to get the list of all source files.
+# We don't really need to include header and resource files to build, but it's
+# nice to have them also show up in IDEs.
+IF(${SOL})
+	FILE(GLOB_RECURSE SOURCES "src0/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src0/*.h")
+ELSE()
+	FILE(GLOB_RECURSE SOURCES "src/*.cpp")
+	FILE(GLOB_RECURSE HEADERS "src/*.h")
+ENDIF()
+
+# Set the executable.
+ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCES} ${HEADERS})
+
+# OS specific options and libraries
+IF(WIN32)
+	# c++11 is enabled by default.
+	# -Wall produces way too many warnings.
+	# -pedantic is not supported.
+	# Disable warning 4996.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4996")
+ELSE()
+	# Enable all pedantic warnings.
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -pedantic")
+ENDIF()

L01/src/Image.cpp

@@ -0,0 +1,87 @@
+#include <iostream>
+#include <cassert>
+#include "Image.h"
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+
+using namespace std;
+
+Tri::Tri()
+{
+        vertex v1;
+        v1.x = 0.0;
+        v1.y = 0.0;
+        v1.z = 0.0;
+        vertex v2;
+        v2.x = 0.0;
+        v2.y = 0.0;
+        v2.z = 0.0;
+        vertex v3;
+        v3.x = 0.0;
+        v3.y = 0.0;
+        v3.z = 0.0;
+        v.push_back(v1);
+        v.push_back(v2);
+        v.push_back(v3);
+}
+
+Tri::Tri(vertex &one, vertex &two, vertex &three)
+{
+        v.push_back(one);
+        v.push_back(two);
+        v.push_back(three);
+}
+
+Image::Image(int w, int h) :
+	width(w),
+	height(h),
+	comp(3),
+	pixels(width*height*comp, 0)
+{
+}
+
+Image::~Image()
+{
+}
+
+void Image::setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b)
+{
+	// The pixel data is laid out row by row. Each row consists of 'width'
+	// columns, and each column consists of 3 unsigned chars.
+
+	// First check for bounds
+	if(y < 0 || y >= height) {
+		cout << "Row " << y << " is out of bounds" << endl;
+		return;
+	}
+	if(x < 0 || x >= width) {
+		cout << "Col " << x << " is out of bounds" << endl;
+		return;
+	}
+
+	// Since the origin (0, 0) of the image is the upper left corner, we need
+	// to flip the row to make the origin be the lower left corner.
+	y = height - y - 1;
+	// index corresponding to row and col, (assuming single component image)
+	int index = y*width + x;
+	// Multiply by 3 to get the index for the rgb components.
+	assert(index >= 0);
+	assert(3*index + 2 < (int)pixels.size());
+	pixels[3*index + 0] = r;
+	pixels[3*index + 1] = g;
+	pixels[3*index + 2] = b;
+}
+
+void Image::writeToFile(const string &filename)
+{
+	// The distance in bytes from the first byte of a row of pixels to the
+	// first byte of the next row of pixels
+	int stride_in_bytes = width*comp*sizeof(unsigned char);
+	int rc = stbi_write_png(filename.c_str(), width, height, comp, &pixels[0], stride_in_bytes);
+	if(rc) {
+		cout << "Wrote to " << filename << endl;
+	} else {
+		cout << "Couldn't write to " << filename << endl;
+	}
+}

L01/src/Image.h

@@ -0,0 +1,40 @@
+#pragma once
+#ifndef _IMAGE_H_
+#define _IMAGE_H_
+
+#include <string>
+#include <vector>
+
+struct vertex
+{
+        float x = 0.0;
+        float y = 0.0;
+        float z = 0.0;
+};
+ 
+class Tri
+{
+        public:
+          Tri();
+          Tri(vertex &one, vertex &two, vertex &three);
+          std::vector<vertex> v;
+};
+
+class Image
+{
+public:
+	Image(int width, int height);
+	virtual ~Image();
+	void setPixel(int x, int y, unsigned char r, unsigned char g, unsigned char b);
+	void writeToFile(const std::string &filename);
+	int getWidth() const { return width; }
+	int getHeight() const { return height; }
+
+private:
+	int width;
+	int height;
+	int comp;
+	std::vector<unsigned char> pixels;
+};
+
+#endif

L01/src/main.cpp

@@ -0,0 +1,87 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <memory>
+#include "Image.h"
+
+// This allows you to skip the `std::` in front of C++ standard library
+// functions. You can also say `using std::cout` to be more selective.
+// You should never do this in a header file.
+using namespace std;
+
+int main(int argc, char **argv)
+{
+	if(argc < 10) {
+		cout << "Usage: L01 filename width height x1 y1 x2 y2 x3 y3" << endl;
+		return 0;
+	}
+	// Output filename
+	string filename(argv[1]);
+	// Width of image
+	int width = atoi(argv[2]);
+	// Height of image
+	int height = atoi(argv[3]);
+
+  // Initialize coordinate variables to make things easier
+  float x1 = atoi(argv[4]);
+  float y1 = atoi(argv[5]);
+  float x2 = atoi(argv[6]);
+  float y2 = atoi(argv[7]);
+  float x3 = atoi(argv[8]);
+  float y3 = atoi(argv[9]);
+
+  // Vertex 1
+  vertex v1;
+  v1.x = x1;
+  v1.y = y1;
+  v1.z = 0.0;
+  // Vertex 2
+  vertex v2;
+  v2.x = x2;
+  v2.y = y2;
+  v2.z = 0.0;
+  // Vertex 3
+  vertex v3;
+  v3.x = x3;
+  v3.y = y3;
+  v3.z = 0.0;
+  // Triangle
+  Tri t(v1, v2, v3);
+
+// Find xmin, xmax, ymin, ymax
+  float xmin = x1;
+  float xmax = x1;
+  float ymin = y1;
+  float ymax = y1;
+  if(x2 < xmin)
+          xmin = x2;
+  if(x3 < xmin)
+          xmin = x3;
+  if(x2 > xmax)
+          xmax = x2;
+  if(x3 > xmax)
+          xmax = x3;
+  if(y2 < ymin)
+          ymin = y2;
+  if(y3 < ymin)
+          ymin = y3;
+  if(y2 > ymax)
+          ymax = y2;
+  if(y3 > ymax)
+          ymax = y3;
+
+	// Create the image. We're using a `shared_ptr`, a C++11 feature.
+	auto image = make_shared<Image>(width, height);
+	// Draw a rectangle
+	for(int y = ymin; y < ymax; ++y) {
+		for(int x = xmin; x < xmax; ++x) {
+			unsigned char r = 255;
+			unsigned char g = 0;
+			unsigned char b = 0;
+			image->setPixel(x, y, r, g, b);
+		}
+	}
+	// Write image to file
+	image->writeToFile(filename);
+	return 0;
+}

L01/src/triangle.cpp

@@ -0,0 +1,33 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <memory>
+#include "triangle.h"
+
+using namespace std;
+
+Tri::Tri()
+{
+        vertex v1;
+        v1.x = 0.0;
+        v1.y = 0.0;
+        v1.z = 0.0;
+        vertex v2;
+        v2.x = 0.0;
+        v2.y = 0.0;
+        v2.z = 0.0;
+        vertex v3;
+        v3.x = 0.0;
+        v3.y = 0.0;
+        v3.z = 0.0;
+        v.push_back(v1);
+        v.push_back(v2);
+        v.push_back(v3);
+}
+
+Tri::Tri(vertex &one, vertex &two, vertex &three) :
+        v.push_back(one),
+        v.push_back(two),
+        v.push_back(three)
+{
+}

L01/src/triangle.h

@@ -0,0 +1,23 @@
+#pragma once
+#ifndef _TRIANGLE_H_
+#define _TRIANGLE_H_
+
+#include <string>
+#include <vector>
+
+struct vertex
+{
+        float x = 0.0;
+        float y = 0.0;
+        float z = 0.0;
+};
+
+class Tri
+{
+        public:
+          Tri();
+          Tri(vertex &one, vertex &two, vertex &three);
+          std::vector<vertex> v;
+};
+
+#endif

L02/.gitignore

@@ -0,0 +1 @@
+build/

L02/CMakeFiles/3.7.2/CMakeCCompiler.cmake

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+set(CMAKE_C11_COMPILE_FEATURES "c_static_assert")
+
+set(CMAKE_C_PLATFORM_ID "Linux")
+set(CMAKE_C_SIMULATE_ID "")
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+set(CMAKE_COMPILER_IS_CYGWIN )
+if(CMAKE_COMPILER_IS_CYGWIN)
+  set(CYGWIN 1)
+  set(UNIX 1)
+endif()
+
+set(CMAKE_C_COMPILER_ENV_VAR "CC")
+
+if(CMAKE_COMPILER_IS_MINGW)
+  set(MINGW 1)
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+
+if(CMAKE_C_SIZEOF_DATA_PTR)
+  set(CMAKE_SIZEOF_VOID_P "${CMAKE_C_SIZEOF_DATA_PTR}")
+endif()
+
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+  set(CMAKE_INTERNAL_PLATFORM_ABI "${CMAKE_C_COMPILER_ABI}")
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L02/CMakeFiles/3.7.2/CMakeCXXCompiler.cmake

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+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
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+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
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+#  define COMPILER_VERSION_PATCH DEC(SDCC    % 10)
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+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
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+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
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+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+#if !defined(__STDC__)
+# if defined(_MSC_VER) && !defined(__clang__)
+#  define C_DIALECT "90"
+# else
+#  define C_DIALECT
+# endif
+#elif __STDC_VERSION__ >= 201000L
+# define C_DIALECT "11"
+#elif __STDC_VERSION__ >= 199901L
+# define C_DIALECT "99"
+#else
+# define C_DIALECT "90"
+#endif
+const char* info_language_dialect_default =
+  "INFO" ":" "dialect_default[" C_DIALECT "]";
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef ID_VOID_MAIN
+void main() {}
+#else
+# if defined(__CLASSIC_C__)
+int main(argc, argv) int argc; char *argv[];
+# else
+int main(int argc, char* argv[])
+# endif
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+  require += info_arch[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
+}
+#endif

L02/CMakeFiles/3.7.2/CompilerIdCXX/CMakeCXXCompilerId.cpp

@@ -0,0 +1,533 @@
+/* This source file must have a .cpp extension so that all C++ compilers
+   recognize the extension without flags.  Borland does not know .cxx for
+   example.  */
+#ifndef __cplusplus
+# error "A C compiler has been selected for C++."
+#endif
+
+
+/* Version number components: V=Version, R=Revision, P=Patch
+   Version date components:   YYYY=Year, MM=Month,   DD=Day  */
+
+#if defined(__COMO__)
+# define COMPILER_ID "Comeau"
+  /* __COMO_VERSION__ = VRR */
+# define COMPILER_VERSION_MAJOR DEC(__COMO_VERSION__ / 100)
+# define COMPILER_VERSION_MINOR DEC(__COMO_VERSION__ % 100)
+
+#elif defined(__INTEL_COMPILER) || defined(__ICC)
+# define COMPILER_ID "Intel"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+  /* __INTEL_COMPILER = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__INTEL_COMPILER/100)
+# define COMPILER_VERSION_MINOR DEC(__INTEL_COMPILER/10 % 10)
+# if defined(__INTEL_COMPILER_UPDATE)
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER_UPDATE)
+# else
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER   % 10)
+# endif
+# if defined(__INTEL_COMPILER_BUILD_DATE)
+  /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */
+#  define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE)
+# endif
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+
+#elif defined(__PATHCC__)
+# define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
+
+#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__)
+# define COMPILER_ID "Embarcadero"
+# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF)
+# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF)
+# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__     & 0xFFFF)
+
+#elif defined(__BORLANDC__)
+# define COMPILER_ID "Borland"
+  /* __BORLANDC__ = 0xVRR */
+# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8)
+# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF)
+
+#elif defined(__WATCOMC__) && __WATCOMC__ < 1200
+# define COMPILER_ID "Watcom"
+   /* __WATCOMC__ = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__WATCOMC__)
+# define COMPILER_ID "OpenWatcom"
+   /* __WATCOMC__ = VVRP + 1100 */
+# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__SUNPRO_CC)
+# define COMPILER_ID "SunPro"
+# if __SUNPRO_CC >= 0x5100
+   /* __SUNPRO_CC = 0xVRRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# else
+   /* __SUNPRO_CC = 0xVRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# endif
+
+#elif defined(__HP_aCC)
+# define COMPILER_ID "HP"
+  /* __HP_aCC = VVRRPP */
+# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000)
+# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100)
+# define COMPILER_VERSION_PATCH DEC(__HP_aCC     % 100)
+
+#elif defined(__DECCXX)
+# define COMPILER_ID "Compaq"
+  /* __DECCXX_VER = VVRRTPPPP */
+# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000)
+# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000  % 100)
+# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER         % 10000)
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__)
+# define COMPILER_ID "zOS"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800
+# define COMPILER_ID "XL"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800
+# define COMPILER_ID "VisualAge"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__PGI)
+# define COMPILER_ID "PGI"
+# define COMPILER_VERSION_MAJOR DEC(__PGIC__)
+# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__)
+# if defined(__PGIC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
+# endif
+
+#elif defined(_CRAYC)
+# define COMPILER_ID "Cray"
+# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR)
+# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR)
+
+#elif defined(__TI_COMPILER_VERSION__)
+# define COMPILER_ID "TI"
+  /* __TI_COMPILER_VERSION__ = VVVRRRPPP */
+# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000)
+# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000   % 1000)
+# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__        % 1000)
+
+#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version)
+# define COMPILER_ID "Fujitsu"
+
+#elif defined(__SCO_VERSION__)
+# define COMPILER_ID "SCO"
+
+#elif defined(__clang__) && defined(__apple_build_version__)
+# define COMPILER_ID "AppleClang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__)
+
+#elif defined(__clang__)
+# define COMPILER_ID "Clang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+
+#elif defined(__GNUC__)
+# define COMPILER_ID "GNU"
+# define COMPILER_VERSION_MAJOR DEC(__GNUC__)
+# if defined(__GNUC_MINOR__)
+#  define COMPILER_VERSION_MINOR DEC(__GNUC_MINOR__)
+# endif
+# if defined(__GNUC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
+# endif
+
+#elif defined(_MSC_VER)
+# define COMPILER_ID "MSVC"
+  /* _MSC_VER = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(_MSC_VER / 100)
+# define COMPILER_VERSION_MINOR DEC(_MSC_VER % 100)
+# if defined(_MSC_FULL_VER)
+#  if _MSC_VER >= 1400
+    /* _MSC_FULL_VER = VVRRPPPPP */
+#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 100000)
+#  else
+    /* _MSC_FULL_VER = VVRRPPPP */
+#   define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 10000)
+#  endif
+# endif
+# if defined(_MSC_BUILD)
+#  define COMPILER_VERSION_TWEAK DEC(_MSC_BUILD)
+# endif
+
+#elif defined(__VISUALDSPVERSION__) || defined(__ADSPBLACKFIN__) || defined(__ADSPTS__) || defined(__ADSP21000__)
+# define COMPILER_ID "ADSP"
+#if defined(__VISUALDSPVERSION__)
+  /* __VISUALDSPVERSION__ = 0xVVRRPP00 */
+# define COMPILER_VERSION_MAJOR HEX(__VISUALDSPVERSION__>>24)
+# define COMPILER_VERSION_MINOR HEX(__VISUALDSPVERSION__>>16 & 0xFF)
+# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8  & 0xFF)
+#endif
+
+#elif defined(__IAR_SYSTEMS_ICC__ ) || defined(__IAR_SYSTEMS_ICC)
+# define COMPILER_ID "IAR"
+
+#elif defined(__ARMCC_VERSION)
+# define COMPILER_ID "ARMCC"
+#if __ARMCC_VERSION >= 1000000
+  /* __ARMCC_VERSION = VRRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION     % 10000)
+#else
+  /* __ARMCC_VERSION = VRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
+#endif
+
+
+#elif defined(_SGI_COMPILER_VERSION) || defined(_COMPILER_VERSION)
+# define COMPILER_ID "MIPSpro"
+# if defined(_SGI_COMPILER_VERSION)
+  /* _SGI_COMPILER_VERSION = VRP */
+#  define COMPILER_VERSION_MAJOR DEC(_SGI_COMPILER_VERSION/100)
+#  define COMPILER_VERSION_MINOR DEC(_SGI_COMPILER_VERSION/10 % 10)
+#  define COMPILER_VERSION_PATCH DEC(_SGI_COMPILER_VERSION    % 10)
+# else
+  /* _COMPILER_VERSION = VRP */
+#  define COMPILER_VERSION_MAJOR DEC(_COMPILER_VERSION/100)
+#  define COMPILER_VERSION_MINOR DEC(_COMPILER_VERSION/10 % 10)
+#  define COMPILER_VERSION_PATCH DEC(_COMPILER_VERSION    % 10)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
+#elif defined(__sgi)
+# define COMPILER_ID "MIPSpro"
+
+#elif defined(__hpux) || defined(__hpua)
+# define COMPILER_ID "HP"
+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
+#ifdef SIMULATE_ID
+char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
+#endif
+
+#ifdef __QNXNTO__
+char const* qnxnto = "INFO" ":" "qnxnto[]";
+#endif
+
+#if defined(__CRAYXE) || defined(__CRAYXC)
+char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
+#endif
+
+#define STRINGIFY_HELPER(X) #X
+#define STRINGIFY(X) STRINGIFY_HELPER(X)
+
+/* Identify known platforms by name.  */
+#if defined(__linux) || defined(__linux__) || defined(linux)
+# define PLATFORM_ID "Linux"
+
+#elif defined(__CYGWIN__)
+# define PLATFORM_ID "Cygwin"
+
+#elif defined(__MINGW32__)
+# define PLATFORM_ID "MinGW"
+
+#elif defined(__APPLE__)
+# define PLATFORM_ID "Darwin"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define PLATFORM_ID "Windows"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+# define PLATFORM_ID "FreeBSD"
+
+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
+
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+# define PLATFORM_ID "OpenBSD"
+
+#elif defined(__sun) || defined(sun)
+# define PLATFORM_ID "SunOS"
+
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+# define PLATFORM_ID "AIX"
+
+#elif defined(__sgi) || defined(__sgi__) || defined(_SGI)
+# define PLATFORM_ID "IRIX"
+
+#elif defined(__hpux) || defined(__hpux__)
+# define PLATFORM_ID "HP-UX"
+
+#elif defined(__HAIKU__)
+# define PLATFORM_ID "Haiku"
+
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+# define PLATFORM_ID "BeOS"
+
+#elif defined(__QNX__) || defined(__QNXNTO__)
+# define PLATFORM_ID "QNX"
+
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+# define PLATFORM_ID "Tru64"
+
+#elif defined(__riscos) || defined(__riscos__)
+# define PLATFORM_ID "RISCos"
+
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+# define PLATFORM_ID "SINIX"
+
+#elif defined(__UNIX_SV__)
+# define PLATFORM_ID "UNIX_SV"
+
+#elif defined(__bsdos__)
+# define PLATFORM_ID "BSDOS"
+
+#elif defined(_MPRAS) || defined(MPRAS)
+# define PLATFORM_ID "MP-RAS"
+
+#elif defined(__osf) || defined(__osf__)
+# define PLATFORM_ID "OSF1"
+
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+# define PLATFORM_ID "SCO_SV"
+
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+# define PLATFORM_ID "ULTRIX"
+
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+# define PLATFORM_ID "Xenix"
+
+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
+#  define PLATFORM_ID "Linux"
+
+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
+
+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
+
+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
+
+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
+
+#else /* unknown platform */
+# define PLATFORM_ID
+
+#endif
+
+/* For windows compilers MSVC and Intel we can determine
+   the architecture of the compiler being used.  This is because
+   the compilers do not have flags that can change the architecture,
+   but rather depend on which compiler is being used
+*/
+#if defined(_WIN32) && defined(_MSC_VER)
+# if defined(_M_IA64)
+#  define ARCHITECTURE_ID "IA64"
+
+# elif defined(_M_X64) || defined(_M_AMD64)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# elif defined(_M_ARM)
+#  if _M_ARM == 4
+#   define ARCHITECTURE_ID "ARMV4I"
+#  elif _M_ARM == 5
+#   define ARCHITECTURE_ID "ARMV5I"
+#  else
+#   define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM)
+#  endif
+
+# elif defined(_M_MIPS)
+#  define ARCHITECTURE_ID "MIPS"
+
+# elif defined(_M_SH)
+#  define ARCHITECTURE_ID "SHx"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__WATCOMC__)
+# if defined(_M_I86)
+#  define ARCHITECTURE_ID "I86"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#else
+#  define ARCHITECTURE_ID
+#endif
+
+/* Convert integer to decimal digit literals.  */
+#define DEC(n)                   \
+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
+#define HEX(n)             \
+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
+  ('0' + ((n)     & 0xF))
+
+/* Construct a string literal encoding the version number components. */
+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+const char* info_language_dialect_default = "INFO" ":" "dialect_default["
+#if __cplusplus >= 201402L
+  "14"
+#elif __cplusplus >= 201103L
+  "11"
+#else
+  "98"
+#endif
+"]";
+
+/*--------------------------------------------------------------------------*/
+
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