Commit 9ce32a8
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Work-in-progress: Add geometry functions in Lua
This is intended to show how geometry processing in Lua could work. Only
some example functions are implemented and not for all geometry types,
error detection is limited etc.
Geometry creation functions:
* as_point() (for nodes)
* as_linestring() (for ways)
* as_polygon() (for ways)
* as_multilinestring() (for relations)
* as_multipolygon() (for relations)
Geometry functions:
* geometrytype()
* srid()
* transform(target_srid)
* area() (for polygons)
* centroid() (for polygons)
* simplify(tolerance) (for linestrings)
* split_multi() (for multi geometries)
* #geom/__len() returns the number of geometries (0 for null geom, 1 for
point/linestring/polygon, n for multi* and geometrycollection geoms)
See the file flex-config/new-insert-syntax.lua for an example that shows
how to use these.1 parent 22e738b commit 9ce32a8
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