Lucky Clan

Results 2 issues of Lucky Clan

Maybe some gradients, like Hansa Yellow to Cobalt Blue...

I found that flattenedPointsAreClockwise may return wrong value for self-intersecting polygons. For example it returns true for: ```(0,0) (9,0) (0,10) (10,10)``` But returns false for: ```0,0) (11,0) (0,10) (10,10)``` To...