Extracting re-usable geometry for intersection sidewalk corners
Extracting re-usable geometry for intersection sidewalk corners

Every road intersection will have the same 4 planes at the
corners, so merging them into a single re-usable geometry.
This means that the same geometry can be translated+merged
for each road intersection, instead of manually merging
4 separate geometries each time.

jstrait/webgl-city,jstrait/webgl-city