@Override
    protected CoordinateSequence transformCoordinates(CoordinateSequence coords, Geometry parent) {
      CoordinateSequence copy = new PackedCoordinateSequence.Double(coords.size(), 2, 0);
      for (int i = 0; i < coords.size(); i++) {
        copy.setOrdinate(i, 0, getWorldX(coords.getX(i)));
        copy.setOrdinate(i, 1, getWorldY(coords.getY(i)));
      }
      return copy;
    }
Transform latitude/longitude coordinates to web mercator where top-left corner of the planet is (0,0) and
bottom-right is (1,1).
planetiler-core/src/main/java/com/onthegomap/planetiler/geo/GeoUtils.java