How to link polyNormalPerVertex with a locator orientation ?

[francois...@gmail.com]

Hello there

I got the normals vertex with:


cmds.select( ** my vertex **, r=True )
resultNormalVertex=cmds.polyNormalPerVertex( query=True, xyz=True )


Result -> [0.9876886606216431, 0.0, -0.15643233060836792] which I guess is a vector.

I create a locator at the same vertex position, but would like also to have a correct orientation based on the vertex normals.

What would be the right python command for that ?

[Marcus Ottosson]

One way of getting an orientation from that, is by creating locator A at that point, locator B at the origin, and aim constrain B to A. Then B will contain one (of many possible) orientations for that vector. If you like math, you can also have a look at (pun!) calculating the orientation from three points; that vector, the origin and an "up vector", for example (0, 1, 0). In OpenGL, such an operation is called "look at" and is what the aim constraint is doing too.

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