3d rendering, ray tracing with scenario using opengl and c++

Generating ray-traced images three light sources : point light, directional light, spot light (Multiple light sources ) Sphere rendering: two spheres at least More than two objects ,Interactive control Viewpoint Screen resolution Tracing a ray must include bounces (at least three times) Reflection rays bouncing two times at least, Refraction rays Polygonal object octree 3d animation