My input is transform matrix because this input might be a concatenation of several transform nodes from another software. Tried UT_MATRIX4::explode() and HOM_MATRIX4::extractTranslates()/extractRotates() etc, both of them don't solve correctly even though I tried all possible order combinations. The only function that consistently returns correct result is UT_MATRIX4::getTranslate(). So just wondering if there's any other class or function that does the same thing, or any suggestion on what might be the problem , or if there's any external library that would do what I want are very welcome. ( I tried Imath::extractSHRT() and that doesn't solve correctly either )
How are you testing whether it is correct? Offhand, things that you can be doing wrong: - You're using the wrong transform and/or rotation order - Euler rotation values might not match exactly their original values but they will be correct in the sense that the resulting transform will be identical - You failed to treat the extracted rotation values as radians - You're using the wrong pivot value, or you're using two totally different meanings of “pivot” - Your matrix has shears which you failed to extract - Your matrix needs to be transposed because of your assumption of whether you want your vector3's as column vs. row vectors
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