Collision flypapering: a method for defining realistic behavior for simulated objects in computer animation
AssigneePixar Animation Studios
InventorsDavid E. Baraff, Andrew Witkin
Life of this patent
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Abstract
A method and an apparatus allows animators to control the extent by which scripted character motions affect simulated objects' motions. The simulated objects are connected to the character or non-simulated object, such as clothing or hair, and the motion of the simulated objects is simulated based on the motion of the character or non-simulated object. Collision flypapering is employed to yield the proper behavior of simulated objects when those objects are pinched by surfaces of the character and/or other collision objects.
Claims12
A method of simulating relative motion of objects in computer animation comprising the steps of:
- providing a motion of a non-simulated object, where the non-simulated object is an element of a computer animation display and the non-simulated object has a spatial position and at least one surface;
- providing at least one simulated object associated with said non-simulated object, where said at least one simulated object is another element of the computer animation display and where motions and positions of said at least one simulated object are based on the motion and spatial position of the non-simulated object;
- selectively restraining the motions and positions of said at least one simulated object when said at least one simulated object is pinched by said at least one surface of the non-simulated object;
- and
- displaying the elements of the computer animation display, including associated motions and positions of said elements.
Dependencies are inferred from the claim text.