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python Programming Glossary: a.y

Finding Signed Angle Between Vectors

http://stackoverflow.com/questions/2150050/finding-signed-angle-between-vectors

How can you determine a point is between two other points on a line segment?

http://stackoverflow.com/questions/328107/how-can-you-determine-a-point-is-between-two-other-points-on-a-line-segment

optimized pseudocode def isBetween a b c crossproduct c.y a.y b.x a.x c.x a.x b.y a.y if abs crossproduct epsilon return False.. isBetween a b c crossproduct c.y a.y b.x a.x c.x a.x b.y a.y if abs crossproduct epsilon return False # or 0 if using integers.. # or 0 if using integers dotproduct c.x a.x b.x a.x c.y a.y b.y a.y if dotproduct 0 return False squaredlengthba b.x a.x..