Rasterizes vector features (lon/lat) into a top-down decal texture over a square footprint that
tightly bounds them (+padding), returning the texture and the footprint to hand to
GeoDecalOverlay. Coordinates are flattened to local meters via a small-angle flat map at
the content centroid, drawn north-up. Polygons are filled (and optionally patterned + outlined);
lines are stroked. Holes are not masked (exterior rings only) in this version.
Rasterizes vector features (lon/lat) into a top-down decal texture over a square footprint that tightly bounds them (+padding), returning the texture and the footprint to hand to GeoDecalOverlay. Coordinates are flattened to local meters via a small-angle flat map at the content centroid, drawn north-up. Polygons are filled (and optionally patterned + outlined); lines are stroked. Holes are not masked (exterior rings only) in this version.