15-462 Lecture 6: Hierarchical Modeling

01/30/2003

15-462 Graphics I

15

Instance Transformation

•Often we need several instances of an object

–Wheels of a car

–Arms or legs of a figure

–Chess pieces

•Instances can be shared across space or time

•Encapsulate basic object in a function

•Object instances are created in “standard” form

•Apply transformations to different instances

•Typical order: scaling, rotation, translation