Functional Pre-Image/Folding coloring

[sfogarty]

• [ ] Use grid and apply to compute the pre-images of each square
• [ ] Color each square based on # of pre-images (probably won't work)
• [ ] Color each square based on # of pre-images within epsilon - of eachother? of a point? (probably latter)

[sfogarty]

Two new options:

Using angles of pre-images to estimate folds

• [ ] Compute angles of pre-images
• [ ] Merge sufficiently close angles
• [ ] Count # of remaining angles

Using changes in orientation to estimate fold (or fold parity)

• [x] Take three points with known angle
• [x] Compute their images, and that angle
• [x] If the angle changed sign, color origin square one way or the other