c3b5c726c7
projecting it. The original paper suggests to simply interpolate between the two points of an edge if the distance of the point to that edge is smaller than a threshold. * Fixed both 3D and 2D code to utilize this. Possibly other places in blender where this scaling is done will have to be adjusted. * Changed vertex interpolation to use 2D interpolation, since it already did projection on plane and 2d calculations are faster. * Also added notifier on hard recalc when uvcalc_transfor_correction is used. Results in instant feedback on UV editor when edge sliding.