/**
* Generates a grid over the specified boundary's
*
* @param waypoints2 Array with the polygon points
* @param angle Angle of the grid in Degrees
* @param lineDist Distance between lines in meters
* @return Returns a array of lines of the generated grid
*/
private List<LineLatLng> generateGrid(List<LatLng> waypoints2, Double angle, Double lineDist) {
List<LineLatLng> gridLines = new ArrayList<LineLatLng>();
PolyBounds bounds = new PolyBounds(waypoints2);
LatLng point = new LatLng(bounds.getMiddle().latitude, bounds.getMiddle().longitude);
point = GeoTools.newpos(point, angle - 135, bounds.getDiag());
// get x y step amount in lat lng from m
Double y1 = Math.cos(Math.toRadians(angle + 90));
Double x1 = Math.sin(Math.toRadians(angle + 90));
LatLng diff =
new LatLng(GeoTools.metersTolat(lineDist * y1), GeoTools.metersTolat(lineDist * x1));
Log.d(
"Diff",
"Lat:"
+ GeoTools.metersTolat(lineDist * y1)
+ " Long:"
+ GeoTools.metersTolat(lineDist * x1));
// draw grid
int lines = 0;
while (lines * lineDist < bounds.getDiag() * 1.5) {
LatLng pointx = point;
pointx = GeoTools.newpos(pointx, angle, bounds.getDiag() * 1.5);
LineLatLng line = new LineLatLng(point, pointx);
gridLines.add(line);
point = GeoTools.addLatLng(point, diff);
lines++;
}
return gridLines;
}
