Walking Jun

llSetPrimitiveParams attached rotation で google ってみると
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[#SVC-93] llSetPrimitiveParams PRIM_ROTATION and llSetRot incorrectly implemented for child prims - Second Life Issues
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が見つかったが
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If you must set a child prim to a local rotation "rot" using PRIM_ROTATION, use this:
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llSetPrimitiveParams([PRIM_ROTATION, rot/llGetRootRotation]);
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Furthermore, llGetRootRotation does not return a meaningful result for child prims in attachments.
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等ということが書かれてある 事の本質はこの辺か? でこれを回避する方法は? ということなんだが...
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さらに
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Those examples both illustrate quaternion math that does not make sense. They only work because of the errant multiply operation carried out behind the scenes. Countless scripters in-world and in the forums have essentially stumbled upon these workarounds by doing various quaternion operations until the right thing happens[1]. I (and possibly others) worked out the actual problem and use the above workarounds routinely when I need to. SImply fixing PRIM_ROTATION will, unfortunately, break a lot of content. A new function, llSetRotCorrectly(), and a new operation, PRIM_ROTATION_CORRECT, will need to be implemented to fix this bug.
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などということが書かれてある... そもそも間違ってるってこと? w
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LlSetLocalRot - lslWiki
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には
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Q: How do I perform this with llSetPrimitiveParams on a child of an attached prim?
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A: You need to know the local rotation of the root prim of the the attachment and divide your target rotation by the root's local rotation.
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とある... あの それ知りたいんですが w