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Fix vertex intersection in OverlayArea #1043

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@tanelk tanelk commented Mar 17, 2024

Second try at fixing OverlayArea.
It seems to me, that vertex-vertex intersection could not be done, when only looking at pairs of edges. Instead all four have to be looked at together.

For this I replaced STRtree with SegmentSetMutualIntersector, because it has access to previous and next segments on both lines.

Added several new test cases and moved common ones into a shared base for simple and regular overlay area tests.

Covers #1040 and #1042

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tanelk commented Mar 17, 2024

Did not change SimpleOverlayArea, will get to it after initial review. Perhaps this approach is not OK.
SimpleOverlayAreaTest will fail until so.

tanelk added 2 commits March 17, 2024 18:57
Signed-off-by: tanelk <[email protected]>
Signed-off-by: tanelk <[email protected]>
@tanelk tanelk changed the title Fix vertex-vertex intersection in OverlayArea Fix vertex intersection in OverlayArea Mar 17, 2024
tanelk added 7 commits March 18, 2024 07:28
Signed-off-by: tanelk <[email protected]>
Signed-off-by: tanelk <[email protected]>
Signed-off-by: tanelk <[email protected]>
# Conflicts:
#	modules/lab/src/main/java/org/locationtech/jts/operation/overlayarea/OverlayArea.java
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tanelk commented Mar 22, 2024

I went ahead and fixed the SimpleOverlayArea also. The tests should now all pass

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tanelk commented Apr 16, 2024

Pinging @dr-jts for a review on this.

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