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Sack Library Documentation
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sack::math::vector::RotateAround Function
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Sack Library Documentation
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MATHLIB_EXPORT void RotateAround(PTRANSFORM pt, PC_POINT p, RCOORD amount);
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Parameters |
Description |
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PTRANSFORM pt |
transform to update |
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PC_POINT p |
P defines an axis around which the rotation portion of the matrix is rotated by an amount. Can be any arbitrary axis. |
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RCOORD amount |
an amount to rotate by. |
Rotates a transform around some arbitrary axis. (any line may be used to rotate the transformation's rotation matrix)
coded from http://www.mines.edu/~gmurray/ArbitraryAxisRotation/ArbitraryAxisRotation.html and http://www.siggraph.org/education/materials/HyperGraph/modeling/mod_tran/3drota.htm and http://astronomy.swin.edu.au/~pbourke/geometry/rotate/.
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