MicroTrace.cxx

   1 #include <string>
   2 #include <iostream>
   3
   4 #include "Vec3f.hxx"
   5 //#include "Sphere.hxx"
   6 //#include "Triangle.hxx"
   7 //#include "InfinitePlane.hxx"
   8
   9 #include "Image.hxx"
  10 #include "PerspectiveCamera.hxx"
  11
  12 void RenderFrame(Camera &camera, const std::string& fileName) {
  13   /* scene objects */
  14
  15   /*
  16    Sphere s1(Vec3f(-2,1.7,0),2);
  17    Sphere s2(Vec3f(1,-1,1),2.2);
  18    Sphere s3(Vec3f(3,0.8,-2),2);*/
  19   //InfinitePlane p1(Vec3f(0,-1,0),Vec3f(0,1,0));
  20
  21   /*
  22    Triangle t1(Vec3f(-2,3.7,0),Vec3f(1,2,1),Vec3f(3,2.8,-2));
  23    Triangle t2(Vec3f(3,2,3),Vec3f(3,2,-3),Vec3f(-3,2,-3));
  24    */
  25   Image img(camera.resX(), camera.resY()); // image array
  26   Ray ray; // primary ray
  27
  28   for(int y = 0; y < camera.resY(); y++)
  29     for(int x = 0; x < camera.resX(); x++) {
  30
  31       /* Initialize your ray here */
  32
  33       camera.InitRay(x + 0.5, y + 0.5, ray); // initialize ray
  34
  35       Vec3f col = Vec3f(0, 0, 0); // background color
  36
  37       /*
  38        if (s1.Intersect(ray))
  39        col = Vec3f(1,0,0);
  40        if (s2.Intersect(ray))
  41        col = Vec3f(0,1,0);
  42        if (s3.Intersect(ray))
  43        col = Vec3f(0,0,1);
  44        if (p1.Intersect(ray))
  45        col = Vec3f(1,1,0);
  46        if (t1.Intersect(ray))
  47        col = Vec3f(0,1,1);
  48        if (t2.Intersect(ray))
  49        col = Vec3f(1,1,1);
  50
  51        img(x,y) = col; // store pixel color
  52        */
  53     }
  54   img.WritePPM(fileName); // write final image
  55 }
  56
  57 #define RESX 640 // image x-resolution
  58 #define RESY 480 // image y-resolution
  59 using namespace std;
  60
  61 int main(int, char**) {
  62   // test vector implementation
  63
  64   Vec3f bar(1, 4, 5), foo(3, 2, 1);
  65   cout << "Using example vector bar=" << bar << ", foo=" << foo << endl;
  66   cout << "bar | foo = " << (bar | foo) << ", should be 16" << endl;
  67   cout << "bar | bar = " << (bar | bar) << ", should be 42" << endl;
  68   cout << "foo | foo = " << (foo | foo) << ", should be 14" << endl;
  69   cout << "bar % foo = " << (bar % foo) << ", should be (-6,14,-10)" << endl;
  70   cout << "bar % bar = " << (bar % bar) << ", should be (0,0,0)" << endl;
  71   cout << "foo % foo = " << (foo % foo) << ", should be (0,0,0)" << endl;
  72   cout << "bar.norm() = " << bar.norm() << ", should be 6.48" << endl;
  73   cout << "foo.norm() = " << foo.norm() << ", should be 3.74" << endl;
  74   cout << "bar*5 = " << (bar * 5) << ", should be (5,20,25)" << endl;
  75   cout << "bar/5 = " << (bar / 5) << ", should be (0.2,0.8,1)" << endl;
  76   cout << "bar + foo = " << (bar + foo) << ", should be (4,6,6)" << endl;
  77   cout << "bar - foo = " << (bar - foo) << ", should be (-2,2,4)" << endl;
  78   cout << "foo - bar = " << (foo - bar) << ", should be (2,-2,-4)" << endl;
  79   cout << "bar * foo = " << (bar * foo) << ", should be (3,8,5)" << endl;
  80   cout << "bar / foo = " << (bar / foo) << ", should be (0.33,2,5)" << endl;
  81   cout << "foo / bar = " << (foo / bar) << ", should be (3,0.5,0.2)" << endl;
  82
  83   cout << "bar *= 4: " << (bar *= 4) << ", should be (4,16,20)" << endl;
  84   cout << "bar /= 2: " << (bar /= 2) << ", should be (2,8,10)" << endl;
  85   cout << "bar += foo: " << (bar += foo) << ", should be (5,10,11)" << endl;
  86   cout << "bar -= Vec3f(5,6,3): " << (bar -= Vec3f(5, 6, 3))
  87     << ", should be (0,4,8)" << endl;
  88
  89   cout << "bar[0] = " << bar[0] << ", should be 0" << endl;
  90   cout << "bar[1] = " << bar[1] << ", should be 4" << endl;
  91   cout << "bar[2] = " << bar[2] << ", should be 8" << endl;
  92   cout << "foo[0] = " << foo[0] << ", should be 3" << endl;
  93   cout << "foo[1] = " << foo[1] << ", should be 2" << endl;
  94   cout << "foo[2] = " << foo[2] << ", should be 1" << endl;
  95
  96   bar.normalize();
  97   cout << "bar.normalize(): " << bar << ", should be (0,0.44,0.89)" << endl;
  98   foo.normalize();
  99   cout << "foo.normalize(): " << foo << ", should be (0.80,0.53,0.26)" << endl;
 100   bar = foo;
 101   cout << "bar := foo: bar = " << bar << ", should be (0.80,0.53,0.26)" << endl;
 102
 103   /* render three images with different camera settings */
 104   /*
 105    PerspectiveCamera c1(Vec3f(0, 0, 10), Vec3f(0, 0, -1), Vec3f(0, 1, 0), 60,
 106    RESX, RESY);
 107    RenderFrame(c1, "perspective1.ppm");
 108
 109    PerspectiveCamera c2(Vec3f(-8, 3, 8), Vec3f(1, -.1, -1), Vec3f(0, 1, 0), 45,
 110    RESX, RESY);
 111    RenderFrame(c2, "perspective2.ppm");
 112
 113    PerspectiveCamera c3(Vec3f(-8, 3, 8), Vec3f(1, -.1, -1), Vec3f(1, 1, 0), 45,
 114    RESX, RESY);
 115    RenderFrame(c3, "perspective3.ppm");*/
 116 }