Detect and correct for rotation and scale in contour cuts

[papercruiser]

I'd like to see SCAL3 detect and correct for rotation and scale differences when calibration for contour cuts.

This would fix these problems:
1) Printer error: A sheet from a printer can come out misaligned (not square) to the edge of the paper.
2) Human error: placement of the paper and mat relative to the cutter. Example: If the paper or the mat is not placed down exactly perpendicular to the cutter's long axis, the whole thing will be off.

Benefit:
The would greatly increase the accuracy of whole-sheet contour cuts.

Once you have the 3 or 4 corners plotted, It's just a little more math to figure and make adjustments for slight scale and rotation issues.

Thanks for listening!