Martin Matzeder

Hello,
how can I extract only the orientation from this matrix , without shear and scale? The quaternion function seems not to ignore the scales and shears that are stored in the matrix and this leads to different rotations.

I get strange mblur result when I try te calclate the w attribute from this.
thanks
Martin

nicholasralabate
This book is excellent, free online but well worth buying a hard copy:

https://gamemath.com/book/intro.html [gamemath.com]

this is one of the best

I solved it with a sopsolver that stores the activation frame on the geometry, so the points know when to start, and the gasopencl was simple, no need for extra geometry

but still would be interested if this is possible at all. I hope at some point the gasopencl dop is like the sop version

Martin