For reducing the number of points I've often used mapshaper.org.
For deciding if a user is in Texas you could create a simple polygon completely inside Texas and one in Oklahoma. 99% would fall in the simple polygon and the rest go to the detailed polygons. Or create bounds near the complex river borders and use the detailed polygons there.
On the other hand I just use simple, non-optimized functions for qquiz.com.
For deciding if a user is in Texas you could create a simple polygon completely inside Texas and one in Oklahoma. 99% would fall in the simple polygon and the rest go to the detailed polygons. Or create bounds near the complex river borders and use the detailed polygons there.
On the other hand I just use simple, non-optimized functions for qquiz.com.