Transform: fix interact drawing
- skew is properly applied
- rotation bar should not be affected by skew, and show the true angle
Transform: fix rotation with the interact
Transform: fix dragging interact center point
Transform: don’t shrink the interact ellipse too much
Transform: fix dragging the ellipse in the interact
Transform: fix dragging left/right/top/bottom points
Transform: fix skew bar drawing
Transform: add skewY bar control + factorize + fix a few misuses of pixelScale.
There are probably a lot more bugs related to the fact that most of the time the axes are not aligned.