TODO for Phase 1 (Basemap)

huge maps
- manually mark polygon for the part of seattle to simulate
- maybe need a quadtree for sidewalk finding to actually work (slightly weird, because no render layer -- use center points only)
- look into all the warnings (trim failing, no driving lane for buses, duplicate turns)
lots more data
maybe also the time to split into different lane types? what's similar/not between them?
- graph querying?
- rendering (and other UI/editor interactions)?
- sim state?
more data
- draw ALL water and greenery areas
- draw benches, bike racks
  - more generally, a way to display random GIS data from seattle site (kml)
- render trees
- do need to mouseover shapefile things and see full data
- grab number of phases from traffic signal shp
- look for current stop sign priorities
  - https://gis-kingcounty.opendata.arcgis.com/datasets/traffic-signs--sign-point/
polish geometry
- new center polylines
  - explode out at some angles
- draw intersections at dead-ends
- shift turn icons and stop markings and such away from crosswalk
- interpret failed shifting/polyline attempt as implying something about the lane specs
- figure out what to do about yellow center lines
  - yellow and white lines intersect cars and turn icons and such
  - who should own drawing them?
  - trim them back too (maybe to avoid hitting the intersection?)
code cleanup
- move map_model geometry stuff elsewhere (sim stuff also needs it though)
- merge control map into one of the other layers?
better drawing