Fixing conflicts.
This commit is contained in:
Alex
commit
61b0289b7a
5 changed files with 332 additions and 1 deletions
28
include/PerlinNoise.h
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28
include/PerlinNoise.h
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@ -0,0 +1,28 @@
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#include <vector>
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// THIS CLASS IS A TRANSLATION TO C++11 FROM THE REFERENCE
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// JAVA IMPLEMENTATION OF THE IMPROVED PERLIN FUNCTION (see http://mrl.nyu.edu/~perlin/noise/)
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// THE ORIGINAL JAVA IMPLEMENTATION IS COPYRIGHT 2002 KEN PERLIN
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// I ADDED AN EXTRA METHOD THAT GENERATES A NEW PERMUTATION VECTOR (THIS IS NOT PRESENT IN THE ORIGINAL IMPLEMENTATION)
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#ifndef PERLINNOISE_H
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#define PERLINNOISE_H
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class PerlinNoise {
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// The permutation vector
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std::vector<int> p;
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public:
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// Initialize with the reference values for the permutation vector
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PerlinNoise();
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// Generate a new permutation vector based on the value of seed
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PerlinNoise(unsigned int seed);
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// Get a noise value, for 2D images z can have any value
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double noise(double x, double y, double z);
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private:
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double fade(double t);
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double lerp(double t, double a, double b);
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double grad(int hash, double x, double y, double z);
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};
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#endif
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37
include/ppm.h
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37
include/ppm.h
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@ -0,0 +1,37 @@
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//Process a binary PPM file
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#include <vector>
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#include <string>
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#ifndef PPM_H
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#define PPM_H
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class ppm {
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void init();
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//info about the PPM file (height and width)
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unsigned int nr_lines;
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unsigned int nr_columns;
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public:
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//arrays for storing the R,G,B values
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std::vector<unsigned char> r;
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std::vector<unsigned char> g;
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std::vector<unsigned char> b;
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//
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unsigned int height;
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unsigned int width;
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unsigned int max_col_val;
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//total number of elements (pixels)
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unsigned int size;
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ppm();
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//create a PPM object and fill it with data stored in fname
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ppm(const std::string &fname);
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//create an "epmty" PPM image with a given width and height;the R,G,B arrays are filled with zeros
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ppm(const unsigned int _width, const unsigned int _height);
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//read the PPM image from fname
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void read(const std::string &fname);
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//write the PPM image in fname
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void write(const std::string &fname);
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};
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#endif
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93
source/PerlinNoise.cpp
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93
source/PerlinNoise.cpp
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@ -0,0 +1,93 @@
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#include "PerlinNoise.h"
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#include <cmath>
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#include <random>
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#include <algorithm>
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// THIS IS A DIRECT TRANSLATION TO C++11 FROM THE REFERENCE
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// JAVA IMPLEMENTATION OF THE IMPROVED PERLIN FUNCTION (see http://mrl.nyu.edu/~perlin/noise/)
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// THE ORIGINAL JAVA IMPLEMENTATION IS COPYRIGHT 2002 KEN PERLIN
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// I ADDED AN EXTRA METHOD THAT GENERATES A NEW PERMUTATION VECTOR (THIS IS NOT PRESENT IN THE ORIGINAL IMPLEMENTATION)
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// Initialize with the reference values for the permutation vector
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PerlinNoise::PerlinNoise() {
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// Initialize the permutation vector with the reference values
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p = {
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151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,
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8,99,37,240,21,10,23,190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,
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35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,
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134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,
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55,46,245,40,244,102,143,54, 65,25,63,161,1,216,80,73,209,76,132,187,208, 89,
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18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,
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250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,
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189,28,42,223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167,
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43,172,9,129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,
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97,228,251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,
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107,49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
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138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180 };
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// Duplicate the permutation vector
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p.insert(p.end(), p.begin(), p.end());
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}
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// Generate a new permutation vector based on the value of seed
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PerlinNoise::PerlinNoise(unsigned int seed) {
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p.resize(256);
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// Fill p with values from 0 to 255
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std::iota(p.begin(), p.end(), 0);
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// Initialize a random engine with seed
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std::default_random_engine engine(seed);
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// Suffle using the above random engine
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std::shuffle(p.begin(), p.end(), engine);
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// Duplicate the permutation vector
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p.insert(p.end(), p.begin(), p.end());
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}
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double PerlinNoise::noise(double x, double y, double z) {
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// Find the unit cube that contains the point
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int X = (int) floor(x) & 255;
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int Y = (int) floor(y) & 255;
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int Z = (int) floor(z) & 255;
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// Find relative x, y,z of point in cube
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x -= floor(x);
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y -= floor(y);
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z -= floor(z);
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// Compute fade curves for each of x, y, z
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double u = fade(x);
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double v = fade(y);
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double w = fade(z);
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// Hash coordinates of the 8 cube corners
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int A = p[X] + Y;
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int AA = p[A] + Z;
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int AB = p[A + 1] + Z;
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int B = p[X + 1] + Y;
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int BA = p[B] + Z;
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int BB = p[B + 1] + Z;
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// Add blended results from 8 corners of cube
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double res = lerp(w, lerp(v, lerp(u, grad(p[AA], x, y, z), grad(p[BA], x-1, y, z)), lerp(u, grad(p[AB], x, y-1, z), grad(p[BB], x-1, y-1, z))), lerp(v, lerp(u, grad(p[AA+1], x, y, z-1), grad(p[BA+1], x-1, y, z-1)), lerp(u, grad(p[AB+1], x, y-1, z-1), grad(p[BB+1], x-1, y-1, z-1))));
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return (res + 1.0)/2.0;
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}
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double PerlinNoise::fade(double t) {
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return t * t * t * (t * (t * 6 - 15) + 10);
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}
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double PerlinNoise::lerp(double t, double a, double b) {
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return a + t * (b - a);
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}
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double PerlinNoise::grad(int hash, double x, double y, double z) {
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int h = hash & 15;
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// Convert lower 4 bits of hash into 12 gradient directions
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double u = h < 8 ? x : y,
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v = h < 4 ? y : h == 12 || h == 14 ? x : z;
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return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v);
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}
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@ -7,11 +7,35 @@
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#include <vector>
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#include "../include/CompFab.h"
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#include "../include/Mesh.h"
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#include "../include/ppm.h"
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#include "../include/PerlinNoise.h"
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#include <math.h>
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#define PI 3.14159265
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// A function to find the X and Y dimensions of the template obj
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double distanceA2B(double ax, double ay, double bx, double by){
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return sqrt((bx-ax)*(bx-ax) + (by-ay)*(by-ay));
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}
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double jerfunc(double x, double y, PerlinNoise pnoise){
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double n = 0;
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double m = 0;
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//perlin noise
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n = 20 * pnoise.noise(x,y,0.8);
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n = n - floor(n);
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//Central distrobution
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//distance from point to center
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m = distanceA2B(x,y,0.5,0.5);
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return (m*0.15)+(n*0.85);
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}
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//A function to find the X and Y dimensions of the template obj
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void findLW(Mesh &m, double &l, double &w)
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{
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double minl, maxl, minw, maxw;
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@ -52,6 +76,7 @@ std::vector<CompFab::Vec3> createVec3d(std::vector<CompFab::Vec3> &t, int layers
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CompFab::Vec3 *temp = new CompFab::Vec3(-ls, -ws, 0);
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// Vec3 to hold our current translation matrix.
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<<<<<<< HEAD
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CompFab::Vec3 *trans = new CompFab::Vec3(ls, ws, 0);
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//Vec3 to hold our current height multiplication materx.
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@ -62,6 +87,11 @@ std::vector<CompFab::Vec3> createVec3d(std::vector<CompFab::Vec3> &t, int layers
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{
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output->push_back(mmult(*mult, t[i]));
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}
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=======
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CompFab::Vec3 *trans = new CompFab::Vec3(0, spacing, 0);
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CompFab::Vec3 *coord = new CompFab::Vec3(0.5,0.5,0);
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>>>>>>> master
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// cl for current layer.
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for(int cl = 1; cl < layers; cl++)
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@ -77,6 +107,7 @@ std::vector<CompFab::Vec3> createVec3d(std::vector<CompFab::Vec3> &t, int layers
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{
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angle = (c/(2*cl))*(0.5*PI);
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*trans = CompFab::Vec3(ls*cos(angle), ws*sin(angle), 0);
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<<<<<<< HEAD
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*temp += *trans;
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for(int j = 0; j < t.size(); j++)
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{
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@ -98,6 +129,16 @@ std::vector<CompFab::Vec3i> createVec3id(std::vector<CompFab::Vec3i> &t, std::ve
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for(int k = 0; k < t.size(); k++)
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{
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output->push_back(t[k] + *offset);
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=======
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*temp = *temp + *trans;
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output->push_back(*temp);
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*coord = *coord + mmult(trans, Vec3(1/(layers*2-1)/2),1/(layers*2-1)/2,0);
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*temp=mmult(temp,Vec3(1,1,n));
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>>>>>>> master
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}
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}
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@ -122,6 +163,7 @@ int main(int argc, char **argv)
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// Debugging
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if(argc > 3)
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{
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<<<<<<< HEAD
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if(strcmp(argv[3], "-g") == 0 || strcmp(argv[3], "-d") == 0)
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{
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// TODO: Modularize these.
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@ -149,6 +191,10 @@ int main(int argc, char **argv)
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if(strcmp(argv[argc - 1], "-d") == 0)
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{
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=======
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// {
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>>>>>>> master
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for(int j = 0; j < output->v.size(); j++)
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{
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std::cout << output->v[j].m_x << " " << output->v[j].m_y << " " << output->v[j].m_z << std::endl;
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127
source/ppm.cpp
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127
source/ppm.cpp
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <exception>
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#include "ppm.h"
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//init with default values
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void ppm::init() {
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width = 0;
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height = 0;
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max_col_val = 255;
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}
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//create a PPM object
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ppm::ppm() {
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init();
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}
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//create a PPM object and fill it with data stored in fname
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ppm::ppm(const std::string &fname) {
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init();
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read(fname);
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}
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//create an "epmty" PPM image with a given width and height;the R,G,B arrays are filled with zeros
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ppm::ppm(const unsigned int _width, const unsigned int _height) {
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init();
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width = _width;
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height = _height;
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nr_lines = height;
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nr_columns = width;
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size = width*height;
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// fill r, g and b with 0
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r.resize(size);
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g.resize(size);
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b.resize(size);
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}
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//read the PPM image from fname
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void ppm::read(const std::string &fname) {
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std::ifstream inp(fname.c_str(), std::ios::in | std::ios::binary);
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if (inp.is_open()) {
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std::string line;
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std::getline(inp, line);
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if (line != "P6") {
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std::cout << "Error. Unrecognized file format." << std::endl;
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return;
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}
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std::getline(inp, line);
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while (line[0] == '#') {
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std::getline(inp, line);
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}
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std::stringstream dimensions(line);
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try {
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dimensions >> width;
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dimensions >> height;
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nr_lines = height;
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nr_columns = width;
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} catch (std::exception &e) {
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std::cout << "Header file format error. " << e.what() << std::endl;
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return;
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}
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std::getline(inp, line);
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std::stringstream max_val(line);
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try {
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max_val >> max_col_val;
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} catch (std::exception &e) {
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std::cout << "Header file format error. " << e.what() << std::endl;
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return;
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}
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size = width*height;
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r.reserve(size);
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g.reserve(size);
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b.reserve(size);
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char aux;
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for (unsigned int i = 0; i < size; ++i) {
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inp.read(&aux, 1);
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r[i] = (unsigned char) aux;
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inp.read(&aux, 1);
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g[i] = (unsigned char) aux;
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inp.read(&aux, 1);
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b[i] = (unsigned char) aux;
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}
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} else {
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std::cout << "Error. Unable to open " << fname << std::endl;
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}
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inp.close();
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}
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//write the PPM image in fname
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void ppm::write(const std::string &fname) {
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std::ofstream inp(fname.c_str(), std::ios::out | std::ios::binary);
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if (inp.is_open()) {
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inp << "P6\n";
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inp << width;
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inp << " ";
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inp << height << "\n";
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inp << max_col_val << "\n";
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char aux;
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for (unsigned int i = 0; i < size; ++i) {
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aux = (char) r[i];
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inp.write(&aux, 1);
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aux = (char) g[i];
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inp.write(&aux, 1);
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aux = (char) b[i];
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inp.write(&aux, 1);
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}
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} else {
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std::cout << "Error. Unable to open " << fname << std::endl;
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}
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inp.close();
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}
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