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If your transformation matrix is a rotation matrix then you can simplify the problem by taking advantage of the fact that the inverse of a rotation matrix is the transpose of that matrix. If your transformation matrix represents a rotation followed by a translation, then treat the components separately. The inverse is equivalent to subtracting the ...


So long as the matrix M is invertible (which it generally will be, unless you're doing something very unusual), then computing the matrix inverse of M will give you a matrix that does what you want. That is, if M performs some transformation, inverse(M) performs the "opposite" transformation. Most matrix/vector libraries provide a means for computing the ...


In your matrix lib there is probably a function called inverse. That is probably what you are looking for.

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