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Scene graph representations
Description
The OpenGL state is updated during traversal
of the graph (top to bottom, left to right).
The effect of a parent applied to all its child nodes; an operation performed on a group automatically propagates its effect to all of its members.
In many programs, associating a geometrical transformation matrix at each group level and concatenating such matrices together is an efficient and natural way to process such operations (recall lab 2)
A common feature, for instance, is the ability to group related shapes/objects into a compound object that can then be moved, transformed, selected, etc. as easily as a single object.
The effect of a parent applied to all its child nodes; an operation performed on a group automatically propagates its effect to all of its members.
In many programs, associating a geometrical transformation matrix at each group level and concatenating such matrices together is an efficient and natural way to process such operations (recall lab 2)
A common feature, for instance, is the ability to group related shapes/objects into a compound object that can then be moved, transformed, selected, etc. as easily as a single object.
Importance
High