Class NodeTransform2D

This function should set the transform based on an input matrix and (optionally) a starting position. Calling T.getMatrix() on the resulting transform should produce the input matrix m. Position should be the point where changes to rotation or scale will rotate and scale around. Meanings of position, rotation, scale, and anchor match those used in Adobe standards (e.g., After Effects). The corresponding matrix is calculated as shown in getMatrix() above: (P)(R)(S)*(-A). Position is specified as a constraint because the two translations in the above equation create a redundancy.

We recommend familiarizing yourself with the available methods in src/anigraph/amath/Mat3.ts.

Also familiarize yourself with the available functions in src/anigraph/amath/Precision.ts. These are useful when dealing with floating point inaccuracies and other small numbers.

Note: do not let the scale factor be less than epsilon.