World - this file contains the definition of the World...

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// this file contains the definition of the World class / #include "wxraytracer.h" # #include "World.h" #include "Constants.h" # // geometric objects / #include "Plane.h" #include "Sphere.h" # // tracers / #include "SingleSphere.h" #include "MultipleObjects.h" # // utilities / #include "Vector3D.h" #include "Point3D.h" #include "Normal.h" #include "ShadeRec.h" #include "Maths.h" # // build functions / #include "BuildSingleSphere.cpp" //#include "BuildMultipleObjects.cpp" //#include "BuildBBCoverPic.cpp" / // -------------------------------------------------------------------- default constructor c World::World(void) : background_color(black), tracer_ptr(NULL) {} { //------------------------------------------------------------------ destructor / World::~World(void) { W if(tracer_ptr) { delete tracer_ptr; tracer_ptr = NULL; } delete_objects(); d } //------------------------------------------------------------------ render_scene / // This uses orthographic viewing along the zw axis /
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void v World::render_scene(void) const { W RGBColor pixel_color; Ray ray; r int hres = vp.hres; int vres = vp.vres; float s = vp.s; float zw = 100.0; // hardwired in / ray.d = Vector3D(0, 0, -1); r for (int r = 0; r < vres; r++) // up for (int c = 0; c <= hres; c++) { // across / ray.o = Point3D(s * (c - hres / 2.0 + 0.5), s * (r - vres / 2.0 + 0.5), zw); pixel_color = tracer_ptr->trace_ray(ray); display_pixel(r, c, pixel_color); } } } // ------------------------------------------------------------------ clamp /
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