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Ketzer

Bones and Animation

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Hi there. Ive recently got a good bit of work done with my project. And the next big thing im interested in model animation with bones. What I have is an .ASE file including bones and think I understand how the bones are linked and which mesh is relativ to each bone. However Im rather clueless for now regarding a few things ... How would I preferably draw such a model? (I assume move to start of each bone, translate matrix, draw, repeat. Efficiency?) How/Where do I get animation data? (Eg, series of angles for the bones.)

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i suggest you read Brett Porters article on bones animation at RSN.

basically, the way to do it is have a matrix to go along with each bone, modify that matrix with the rotation and translations for each frame of animation, and multiply all verticies attached to that bone by the matrix before drawing.

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i suggest your read there is a good explanation on bone animation in the books

game engine design / david h. eberly
Advanced Animation and rendering techniques - theory and practice / Alan Watt, Mark Watt
3D Games - real-time rendering and softwre technology / alan watt, fabio polcarpo

Regards,
BlackRyder

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