5.29. Keypoint (element)

5.29.1. Attributes

5.29.2. Description

This element defines a keypoint in a subdivision (a mesh). Keypoints are used to control the displacements of the vertices of the mesh.

The integer value of the vertex attribute defines the index of the vertex. associated with this keypoint. This value is not used currently to compute vertex displacements. The integer value of the index attribute defines the rank of the keypoint in the fdp table.

The keypoint displacement is bound to a translation. The translation node reference, given by the xlink:href attribute, defines the URI reference (Uniform Resource Identifier) of the translation node that controls the displacement of the keypoint. The weight of the vertices on the keypoints is given by the fdp vertices elements in the mesh.

5.29.3. Expected child

None.

5.29.4. Example

The example below defines the first keypoint, bound to vertex number 2395 and to the translation node 2.1.

<keypoint index="1" vertex="2395" xlink:href="#2.1" />