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- ST_AsEWKT / (round-trip EWKT with embedded SRID) - ST_AsGeoJSON / ST_GeomFromGeoJSON - ST_MakeLine, ST_MakePolygon, ST_MakeEnvelope - ST_IsClosed, ST_IsRing, ST_IsSimple, ST_IsEmpty, ST_IsCollection - ST_NumGeometries, ST_NRings, ST_HasZ, ST_HasM, ST_Dimension Add geojson + serde_json crate dependencies. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
ST_DWithin: returns true if two geometries are within a given distance. ST_Relate: returns the DE-9IM intersection matrix string for two geometry arguments. Uses the public geo::relate API (CoordPos/Dimensions::get) rather than Debug-string parsing, so the result is stable across geo crate versions. ST_RelateMatch: tests whether a matrix string matches a DE-9IM pattern (supports T/F/0/1/2/* wildcards). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…istance, ST_ClosestPoint, ST_MaxDistance ST_ClosestPoint iterates all vertices of geomB and queries geomA.closest_point for each, keeping the minimum-distance result. This is vertex-exact and correct for non-convex geometries (replaces a centroid-heuristic approach). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…fine, linear ref, advanced)
Overlay: ST_Union, ST_Intersection, ST_Difference, ST_SymDifference
Buffer: ST_Buffer
Editors: ST_Reverse, ST_Normalize, ST_FlipCoordinates, ST_Force2D,
ST_Multi, ST_RemoveRepeatedPoints, ST_CollectionExtract
MakeValid: ST_MakeValid (buffer-0 strategy; doc notes approximation)
Affine: ST_Affine, ST_Rotate, ST_Scale, ST_Translate
Transform: ST_Transform (geometry passthrough; full reprojection requires proj)
Linear ref: ST_LineInterpolatePoint, ST_LineLocatePoint, ST_LineSubstring
Advanced: ST_ChaikinSmoothing, ST_Segmentize, ST_ReducePrecision, ST_UnaryUnion
ST_UnaryUnion returns an error for non-polygonal members inside a
GeometryCollection rather than silently discarding them.
ST_Segmentize documents that only LineString input is currently supported.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implements ST_Collect as a UDAF that accumulates geometries into a GeometryCollection. Wire into the top-level register() function alongside section comments for all UDF categories. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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