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The animation system
in ppModeler is based on skeleton, and a skeleton can only be attached
to a single object. Use the merge object tool if you want to apply animation
on multiple objects. First, the user defines the skeleton itself (a hierarchy of bones). Then, he/she defines the type of articulation between the bones (rotation/translation). The vertices are, by default, attached to the root bone. So, the user has to attach the vertices to the bones, so that the object will deform properly when moving the bones. A vertex can be attached to multiple bones, with a weight. This weight gives the influence of a given bone on the vertex. During the skeleton definition, the object list displays the skeleton hierarchy. A bone is displayed as a square diamond, with two local axis x and y. The purple handle is used to select and move the bone. The two yellow handles to set the bone orientation. |
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