http://houdinihelp.ru/vex/functions/maketransform [houdinihelp.ru]
“The vectors passed in are not normalized meaning that scales should be preserved in construction of the transform.”
What does this means?
I can't understand something about maketransform VEX function in docs.
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- Garry_cg
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- brianBurke
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hi garry. if non-normalized vectors are used to build a matrix ie
the non-one length of the vectors will result in a scale effect of the matrix in addition to the rotation. since the lengths of these vectors are not the same, this results in a shear.
normalizing the vectors results in a rotation-only matrix.
here's an example showing the effect
vector n_n = { 0.5, 0.5, 0 }; vector n_up = { 0.5, 0, 1 }; mtx = maketransform(n_n, n_up);
the non-one length of the vectors will result in a scale effect of the matrix in addition to the rotation. since the lengths of these vectors are not the same, this results in a shear.
normalizing the vectors results in a rotation-only matrix.
here's an example showing the effect
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