Polygon holes
geometryInterior rings (donuts) must be respected so cells inside a hole are excluded.
▪ Rendered from the real conversion/geometry code.Detection
Polygon has > 1 ring.
Mitigation
- Pass all rings to the filler
- Verify hole winding (CW) after normalization
Read the full article: Geometry Normalization →
Ether Data · Spatio-temporal intelligence