Quiz 5

Q1

Explain how to construct a bind matrix for each joint on a skeleton, and explain the space-to-space transformation each bind matrix applies to any mesh vertex. Your answer should be no more than two sentences.

Q2

Compute the bind matrix for the skeleton joint with the overall transform shown below (you should leave it written as a sequence of individual matrices). Then, apply that bind matrix to a vertex located at the world-space position (2, 2).

Q3

Adam has written a program that applies linear blend skinning to a mesh with a skeleton. However, when his skeleton moves its joints, the mesh does not move with them. Suggest one possible cause for this error in no more than one sentence.