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