Hello, given an arbitrary rotation (represented either by a quaternion or matrix), I've to solve a couple of problems that can be summarized as follow:
1) I'd like to filter some components out: for example I'd like to remove only the rotation about the X axis while keeping the others. 2) I'd like to revert only one component: for example, if the overall rotation have a 30 degrees rotation about the X axis, I'd like to create another rotation that is the same as the original but with a -30 degree rotation about the X axis. Any idea? Thanks. Alessandro
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