Data block animation attached to bone offset by bone length #351
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bsupnik
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May 9, 2018
The old exporter would find the pre-animation matrix for DBs by walking forward from the parent and simulating the parent-child process. This simulation was wrong for bones and generally error-prone since it required us to duplicate a big chunk of opaque Blender code. The new method walks backward from the datablock pose; since data block animations are last in Blender's transform algo, this is actually a lot less work, and more reliable.
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Layer 2 reproduces this bug - layers 1 and 5 show homogenous (all data block or all bone) cases, layer 2 has the problematic bone parent, armature child case. When broken, the child is at the origin and not at the tip of its parent. |
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If an animated data block is attached to a bone, the animated data block's origin is offset by the bone's length.
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