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Begin tests for extrapolated intersection
This uses a lot of images because generating tests for these is hard. The image files are all very small (<5kb) so it shouldn't make downloading the repo significantly slower. This algorithm can be tricky to get right so I wanted to have a very exhaustive test suite. * pygorithm/geometry/extrapolated_intersection.py - add more helper functions * pygorithm/geometry/polygon2.py - fix fuzzing test sometimes failing * tests/test_geometry.py - add regression test for polygon, add tests for first two functions of extrapolated_intersection + imgs/test_geometry/test_extrapolated_intersection - images that help visualize what the tests are doing. the naming convention is explained in test_geometry.TestExtrapolatedIntersection docstring
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‎imgs/test_geometry/test_extrapolated_intersection/ab01_test_point_line_touching.grf

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