Find the point of intersection between two lines. This method uses Vector2D objects to represent the line end points. @param v0 start of line 1 @param v1 end of line 1 @param v2 start of line 2 @param v3 end of line 2 @return a Vector2D object holding the intersection coordinates else null if n
(Vector2D v0, Vector2D v1, Vector2D v2, Vector2D v3)
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