Texture Maping

Texture Mapping

• Uses images to fill inside of polygons

Environment Mapping

• Uses a picture of the environment for texture maps
• Allows simulation of highly specular surfaces

Bump Mapping

Emulates altering normal vectors during the rendering process

Basic mapping strategies

X = X(s,t)
Y = Y(s,t)
Z = Z(s,t)

• Forward vs backward mapping
• Point sampling vs area averaging

Coordinate Systems

Parametric coordinates
• May be used to model curves and surfaces
• Texture coordinates
• Used to identify points in the image to be mapped
• Object or World Coordinates
• Conceptually, where the mapping takes place
• Window (Screen) Coordinates
• Where the final image is really produced