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Transformation Matrix To Vector


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How can I take a transformation matrix and turn that into a vector?

E.g. How can I figure out what direction (expressed as a vector) my camera is pointing in?

I think the default direction of a camera is the -z direction. So your initial vector should be (0,0,-1). If your transformation matrix is of type 4 x 4 there exists an 'extract transform' VOP and all you should have to do is multiply the rotation matrix you get from this with your vector (0,0,-1).

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