MicroTrace.cxx

   1 #include <string>
   2
   3 #include "Vec3f.hxx"
   4 #include "Sphere.hxx"
   5 #include "Triangle.hxx"
   6 #include "InfinitePlane.hxx"
   7
   8 #include "Image.hxx"
   9 #include "PerspectiveCamera.hxx"
  10 #include "FlatShader.hxx"
  11 #include "EyeLightShader.hxx"
  12 #include "ReflectiveEyeLightShader.hxx"
  13 #include "Scene.hxx"
  14
  15 void RenderFrameFlat(const std::string& fileName)
  16 {
  17   /* Scene definition */
  18
  19   Scene scene;
  20
  21   /* Flat shaders */
  22   FlatShader shd1(&scene, Vec3f(1,0,0)); // red surface
  23   FlatShader shd2(&scene, Vec3f(0,1,0)); // green surface
  24   FlatShader shd3(&scene, Vec3f(0,0,1)); // blue surface
  25   FlatShader shd4(&scene, Vec3f(1,1,0)); // yellow surface
  26   FlatShader shd5(&scene, Vec3f(0,1,1)); // cyan surface
  27   FlatShader shd6(&scene, Vec3f(1,1,1)); // white surface
  28
  29   /* scene objects */
  30   Sphere s1(Vec3f(-2,1.7,0), 2, &shd1);
  31   Sphere s2(Vec3f(1,-1,1), 2.2, &shd2);
  32   Sphere s3(Vec3f(3,0.8,-2), 2, &shd3);
  33   InfinitePlane p1(Vec3f(0,-1,0),Vec3f(0,1,0), &shd4);
  34
  35
  36   Triangle t1(Vec3f(-2,3,1),Vec3f(1,2,1),Vec3f(3,2.8,3), &shd5);
  37
  38   /* add to scene */
  39   scene.Add(&s1);
  40   scene.Add(&s2);
  41   scene.Add(&s3);
  42   scene.Add(&p1);
  43   scene.Add(&t1);
  44
  45
  46   Image img(scene.camera()->resX(),scene.camera()->resY()); // image array
  47   Ray ray;                            // primary ray
  48
  49   for(int y = 0; y < scene.camera()->resY(); y++)
  50     {
  51       for (int x = 0; x < scene.camera()->resX(); x++)
  52       {
  53
  54         /* Initialize your ray here */
  55         // shoot four rays for antialiasing
  56         scene.camera()->InitRay(x+0.5,y+0.5, ray); // initialize ray
  57         Vec3f col1 = scene.RayTrace(ray);
  58         scene.camera()->InitRay(x-0.5,y+0.5, ray); // initialize ray
  59         Vec3f col2 = scene.RayTrace(ray);
  60         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
  61         Vec3f col3 = scene.RayTrace(ray);
  62         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
  63         Vec3f col4 = scene.RayTrace(ray);
  64
  65         img(x,y) = (col1 + col2 + col3 + col4) / 4.0; // store pixel color
  66         //std::cerr << "Main: Image color = " << img(x,y) << std::endl;
  67       }
  68     }
  69   img.WritePPM(fileName); // write final image
  70 }
  71
  72
  73 void RenderFrameEyeLight(const std::string& fileName)
  74 {
  75   /* Scene definition */
  76
  77   Scene scene;
  78
  79   /* Flat shaders */
  80   EyeLightShader shd1(&scene, Vec3f(1,0,0)); // red surface
  81   EyeLightShader shd2(&scene, Vec3f(0,1,0)); // green surface
  82   EyeLightShader shd3(&scene, Vec3f(0,0,1)); // blue surface
  83   EyeLightShader shd4(&scene, Vec3f(1,1,0)); // yellow surface
  84   EyeLightShader shd5(&scene, Vec3f(0,1,1)); // cyan surface
  85   EyeLightShader shd6(&scene, Vec3f(1,1,1)); // white surface
  86
  87   /* scene objects */
  88   Sphere s1(Vec3f(-2,1.7,0), 2, &shd1);
  89   Sphere s2(Vec3f(1,-1,1), 2.2, &shd2);
  90   Sphere s3(Vec3f(3,0.8,-2), 2, &shd3);
  91   InfinitePlane p1(Vec3f(0,-1,0),Vec3f(0,1,0), &shd4);
  92
  93
  94   Triangle t1(Vec3f(-2,3,1),Vec3f(1,2,1),Vec3f(3,2.8,3), &shd5);
  95
  96   /* add to scene */
  97   scene.Add(&s1);
  98   scene.Add(&s2);
  99   scene.Add(&s3);
 100   scene.Add(&p1);
 101   scene.Add(&t1);
 102
 103   Image img(scene.camera()->resX(),scene.camera()->resY()); // image array
 104   Ray ray;                            // primary ray
 105
 106   for(int y = 0; y < scene.camera()->resY(); y++)
 107     {
 108       for (int x = 0; x < scene.camera()->resX(); x++)
 109       {
 110
 111         /* Initialize your ray here */
 112         // shoot four rays for antialiasing
 113         scene.camera()->InitRay(x+0.5,y+0.5, ray); // initialize ray
 114         Vec3f col1 = scene.RayTrace(ray);
 115         scene.camera()->InitRay(x-0.5,y+0.5, ray); // initialize ray
 116         Vec3f col2 = scene.RayTrace(ray);
 117         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
 118         Vec3f col3 = scene.RayTrace(ray);
 119         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
 120         Vec3f col4 = scene.RayTrace(ray);
 121
 122         img(x,y) = (col1 + col2 + col3 + col4) / 4.0; // store pixel color
 123       }
 124     }
 125   img.WritePPM(fileName); // write final image
 126 }
 127
 128 void RenderFrameReflectiveEyeLight(const std::string& fileName)
 129 {
 130   /* Scene definition */
 131
 132   Scene scene;
 133
 134   /* Flat shaders */
 135   ReflectiveEyeLightShader shd1(&scene, 1.0, Vec3f(1,0,0)); // red surface
 136   ReflectiveEyeLightShader shd2(&scene, 1.0, Vec3f(0.0,1.0,0.0)); // green surface
 137   ReflectiveEyeLightShader shd3(&scene, 1.0, Vec3f(0,0,1)); // blue surface
 138   ReflectiveEyeLightShader shd4(&scene, 0.8, Vec3f(1,1,0)); // yellow surface
 139   ReflectiveEyeLightShader shd5(&scene, 1.0, Vec3f(0,1,1)); // cyan surface
 140   ReflectiveEyeLightShader shd6(&scene, 0.0, Vec3f(1,1,1)); // white surface
 141
 142   /* scene objects */
 143   Sphere s1(Vec3f(-2,1.7,0), 2, &shd1);
 144   Sphere s2(Vec3f(0.4,-1,1), 2.0, &shd2);
 145   Sphere s3(Vec3f(3,0.8,-2), 2, &shd3);
 146   InfinitePlane p1(Vec3f(0,-1,0),Vec3f(0,1,0), &shd4);
 147
 148
 149   Triangle t1(Vec3f(-2,3,1),Vec3f(1,2,1),Vec3f(3,2.8,3), &shd5);
 150
 151   /* add to scene */
 152   scene.Add(&s1);
 153   scene.Add(&s2);
 154   scene.Add(&s3);
 155   scene.Add(&p1);
 156   scene.Add(&t1);
 157
 158
 159   Image img(scene.camera()->resX(),scene.camera()->resY()); // image array
 160   Ray ray;                            // primary ray
 161
 162   for(int y = 0; y < scene.camera()->resY(); y++)
 163     {
 164       for (int x = 0; x < scene.camera()->resX(); x++)
 165       {
 166         /* Initialize your ray here */
 167         // shoot four rays for antialiasing
 168         scene.camera()->InitRay(x+0.5,y+0.5, ray); // initialize ray
 169         Vec3f col1 = scene.RayTrace(ray);
 170         scene.camera()->InitRay(x-0.5,y+0.5, ray); // initialize ray
 171         Vec3f col2 = scene.RayTrace(ray);
 172         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
 173         Vec3f col3 = scene.RayTrace(ray);
 174         scene.camera()->InitRay(x-0.5,y-0.5, ray); // initialize ray
 175         Vec3f col4 = scene.RayTrace(ray);
 176
 177         img(x,y) = (col1 + col2 + col3 + col4) / 4.0; // store pixel color
 178         //std::cerr << "Main: Image color = " << img(x,y) << std::endl;
 179       }
 180     }
 181   img.WritePPM(fileName); // write final image
 182 }
 183
 184
 185
 186 #define RESX 640 // image x-resolution
 187 #define RESY 480 // image y-resolution
 188
 189 int main(int, char**)
 190 {
 191   RenderFrameFlat("flatshaded.ppm");
 192   RenderFrameEyeLight("eyelight.ppm");
 193   RenderFrameReflectiveEyeLight("reflective.ppm");
 194 }