Represents the controller element in a collada document

Represents a instance_controller tag in a collada scene graph

The Influence class has no direct counterpart in collada, but is useful for understanding and traversing the complex indexing of skinning data in sources. And Influence is just a bone-weight pair, used for skinning.

The Joint class contains data relevant to a Joint and its transformations

Pretty must just a list of Joints, with a couple extra functions

Represents the joints element in a collada file. Basically just matches a list of joint names up with a list of inverse-bind matrices, and serves as a repository to contain joints in a skinning controller.

Represents a skin element in a collada file

This class represents the vertex_weights element of a skin in a collada document

The Weight class in used in skinning. It represents the weighting value used in an influence.

The WeightedObject class serves as a base class for Geometry.Vertex, and provides support for skinning information. The rest of the information stored in the vertex is not needed for skinning, and so is separated out into a separate class in the other namespace.