Modeling
Shapes and their (hierarchical) composition
Materials (degrees of diffuse and specular
reflection)
Behavior:
time-varying attributes for each frame or key frame
Lighting
Directional lights, spot lights, area lights, etc
Specifying the camera to define the view volume
Position
Direction (a vector in 3-space)
Orientation about barrel of lens
Field of view (wide-angle to telephoto) via clipping
planes
Choose perspective or parallel projection
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Rendering: map
from 3D scene to 2D image