问题
If I am given 3 circles and they are positioned as the primary colors circles (3 circles intersecting each other), is there a function that might help me to delete the parts that are not colliding with anything and just keep the intersecting parts?
Another example could be drawing three lines in such a way that it forms a triangle. By deleting the parts that are not colliding, we would end up with 3 points (at least visually, not sure if I end up with 3 in total or 6 from stacking up), which are the edges of the previous triangle.
I have been checking the ClipFunc and the HitFunc, but I am not sure if I am going through the correct/best path to solving my problem.
来源：https://stackoverflow.com/questions/64603077/how-can-i-get-the-intersection-of-three-shapes-colliding-and-delete-the-parts-th