16
Part 2: RGB vs. HSV interpolation
NewR = (1-a) CanvasR + a PaintR
NewG = (1-a) CanvasG + a PaintG
NewB = (1-a) CanvasB + a PaintB
NewH = (1-a) CanvasH + a PaintH
NewS = (1-a) CanvasS + a PaintS
NewV = (1-a) CanvasV + a PaintV
RGB interpolation
HSV interpolation