CGA2 Question 1

What is a Material ?

As in the question it says material is defined by :

Ambient colour
Diffuse colour
Specular colour
Emissive colour
Shininess
Reflection transfer rate
Refraction transfer rate
Material index

What about classes ?

Ray, Light, Material, Geometry, Sphere and Plan ?

Look at the example and the the course material on Raytracing !

Example : Material = Surface

• Surface characteristics

• Method to compute the colour of a point of the surface

Example : Geometry = Renderable

• Any renderable object has at least a position and some method to compute the intersection of a ray with itself.

• Sphere, Plane are Geometry