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
  11 void RenderFrame(Camera &camera,
  12                  const std::string& fileName)
  13 {
  14   /* scene objects */
  15
  16   /*
  17     Sphere s1(Vec3f(-2,1.7,0),2);
  18     Sphere s2(Vec3f(1,-1,1),2.2);
  19     Sphere s3(Vec3f(3,0.8,-2),2);*/
  20   //InfinitePlane p1(Vec3f(0,-1,0),Vec3f(0,1,0));
  21
  22   /*
  23     Triangle t1(Vec3f(-2,3.7,0),Vec3f(1,2,1),Vec3f(3,2.8,-2));
  24     Triangle t2(Vec3f(3,2,3),Vec3f(3,2,-3),Vec3f(-3,2,-3));
  25   */
  26   Image img(camera.resX(),camera.resY()); // image array
  27   Ray ray;                            // primary ray
  28
  29   for(int y=0;y<camera.resY();y++)
  30     for (int x=0;x<camera.resX();x++)
  31       {
  32
  33         /* Initialize your ray here */
  34
  35         camera.InitRay(x+0.5,y+0.5,ray); // initialize ray
  36
  37         Vec3f col = Vec3f(0,0,0); // background color
  38
  39         /*
  40                 if (s1.Intersect(ray))
  41                 col = Vec3f(1,0,0);
  42                 if (s2.Intersect(ray))
  43                 col = Vec3f(0,1,0);
  44                 if (s3.Intersect(ray))
  45                 col = Vec3f(0,0,1);
  46                 if (p1.Intersect(ray))
  47                 col = Vec3f(1,1,0);
  48                 if (t1.Intersect(ray))
  49                 col = Vec3f(0,1,1);
  50                 if (t2.Intersect(ray))
  51                 col = Vec3f(1,1,1);
  52
  53                 img(x,y) = col; // store pixel color
  54         */
  55       }
  56   img.WritePPM(fileName); // write final image
  57 }
  58
  59 #define RESX 640 // image x-resolution
  60 #define RESY 480 // image y-resolution
  61
  62 int main(int, char**)
  63 {
  64   /* render three images with different camera settings */
  65
  66   PerspectiveCamera c1(Vec3f(0,0,10),Vec3f(0,0,-1),Vec3f(0,1,0),60,RESX,RESY);
  67   RenderFrame(c1,"perspective1.ppm");
  68
  69   PerspectiveCamera c2(Vec3f(-8,3,8),Vec3f(1,-.1,-1),Vec3f(0,1,0),45,RESX,RESY);
  70   RenderFrame(c2,"perspective2.ppm");
  71
  72   PerspectiveCamera c3(Vec3f(-8,3,8),Vec3f(1,-.1,-1),Vec3f(1,1,0),45,RESX,RESY);
  73   RenderFrame(c3,"perspective3.ppm");
  74 }