Affine Mess
Only 6 ways the two points could map to each other and only 44 possible rotations, So we'll try all of them and see if we can find a mapping.
- select a rotation
- perform rotation and snap to grid
- select a mapping between the points
- scale so that one of the edges is the same length between the known and trial image
- translate so that some point between both images that we selected as mapping to eachother are in the same place
- check whether all the points are the same between the two images
- consistent if all matches use the same mapping between points
- inconsistent if there are matches using distinct mappings