Maps

Use Geotools where we can, but write our own renderer

OpenMap is still there as a backup plan

Initial test case will be a simple application that:

• reads a shapefile, using geotools shapefile reader
• projects to a lat,lon=x,y system. We want real projections later, but keep the initial test case simple
• draw to the natural shape file coordinate system. This is likely -180, 180
• draw to another coordinate system, perhaps 0,360
• implement drag on the map to just redraw speed

Cut line

The code will probably have something that does:

drawline(float lat, float lon, float lat2, float lon2) {
   if ( intersectsCutLine()) {
       drawLeft(lat, lon, lat2, lon2);
       drawRight(lat, lon, lat2, lon2);
   } else {
       draw(lat, lon, lat2, lon2);
   }
}

Might be nice if this could use bounding boxes on shapefiles to decide if the if is needed on a big chunk instead of each individual line segment