A set of lessons to learn step by step and from the ground up, the most basic techniques used to render photorealistic CG pictures. Best read in chronological order.
A series of lessons on advanced 3D techniques that are used to enhance the realism of CG renders. Lessons can be read in no particular order and individually.
A series of lessons to learn 2D techniques used in applications such as Photoshop to read write and process digital images.
We will explain in this chapter how to compute the intersection between a box (bounding box) and a ray.
Computing the intersection of a ray and a sphere is incredibly simple and fast. Lets learn about two simple ways of doing so.
