Quartz also provides an affine transform function that inverts a matrix, CGAffineTransformInvert. Inversion is generally used to provide reverse transformation of points within transformed objects.

To solve this problem, [Alessio] wrote a PCB drilling transformational matrix calculator.

Image Matrix Transformations If A is a 3 × 3 matrix then we can apply a linear transformation to each rgb vector via matrix multiplication, where [r, g, b] are the original values and [r ′, g ′, b ′] ...