Term
| What are the matrix interpolation techniques and problems? |
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Definition
Translation
Scale
Rotation (Quaternions) |
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Term
| What is the rigid skinning deformer function? |
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Definition
V = C(B(-1)v)
v is the vertex in model space (skin space)
b(-1) is the inverse of the joints bind pose
C is the joints current pose |
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Term
| What is the smooth skinning deformer function? |
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Definition
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Term
| What are the pros and cons of Morphing? |
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Definition
Pros
Easy to Implement
Linear interpolation is fast
Cons
Cost of interpolation scales linearly as vertex count increases
High memory foot print (memory intensive)
linear interpolation doesn't handle rotations
incapable of procedural animation |
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Term
| What are the pros and cons of Articulated Animation? |
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Definition
Pros
fairly easy to implement
only one copy of the geometry is stored
Geometry is not deformed so rendering it can be accelerated
Cons
Mesh overlap/mesh clipping results in non-organic looking objects
Maintaining the hierarchy is somewhat difficult
Calculation of the world position and orientation of each bone is required every frame (flattening the hierarchy) |
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