| public WorldToTilePos ( double lon, double lat, int zoom ) : DVector2 | ||
| lon | double | |
| lat | double | |
| zoom | int | |
| return | DVector2 | |
public static LinesGisLayer GenerateGrid(Game Game, DVector2 leftTop, DVector2 rightBottom, int dimX, int dimY, Color color, MapProjection projection, bool keepQuad = false)
{
var lt = projection.WorldToTilePos(leftTop.X, leftTop.Y, 0);
var rb = projection.WorldToTilePos(rightBottom.X, rightBottom.Y, 0);
if (keepQuad) {
rb.Y = lt.Y + (rb.X - lt.X);
}
double stepX = Math.Abs(rb.X - lt.X) / (dimX - 1);
double stepY = Math.Abs(rb.Y - lt.Y) / (dimY - 1);
List<Gis.GeoPoint> points = new List<Gis.GeoPoint>();
// Too lazy
for (int row = 1; row < dimY-1; row++) {
for (int col = 0; col < dimX-1; col++) {
var coords0 = projection.TileToWorldPos(lt.X + stepX * col, lt.Y + stepY * row, 0);
var coords1 = projection.TileToWorldPos(lt.X + stepX * (col+1), lt.Y + stepY * row, 0);
points.Add(new Gis.GeoPoint {
Lon = DMathUtil.DegreesToRadians(coords0.X),
Lat = DMathUtil.DegreesToRadians(coords0.Y),
Color = color
});
points.Add(new Gis.GeoPoint {
Lon = DMathUtil.DegreesToRadians(coords1.X),
Lat = DMathUtil.DegreesToRadians(coords1.Y),
Color = color
});
}
}
for (int col = 1; col < dimX-1; col++) {
for (int row = 0; row < dimY-1; row++) {
var coords0 = projection.TileToWorldPos(lt.X + stepX * col, lt.Y + stepY * row, 0);
var coords1 = projection.TileToWorldPos(lt.X + stepX * col, lt.Y + stepY * (row+1), 0);
points.Add(new Gis.GeoPoint {
Lon = DMathUtil.DegreesToRadians(coords0.X),
Lat = DMathUtil.DegreesToRadians(coords0.Y),
Color = color
});
points.Add(new Gis.GeoPoint {
Lon = DMathUtil.DegreesToRadians(coords1.X),
Lat = DMathUtil.DegreesToRadians(coords1.Y),
Color = color
});
}
}
var linesLayer = new LinesGisLayer(Game, points.Count);
Array.Copy(points.ToArray(), linesLayer.PointsCpu, points.Count);
linesLayer.UpdatePointsBuffer();
linesLayer.Flags = (int)(LineFlags.THIN_LINE);
return linesLayer;
}
public static HeatMapLayer GenerateHeatMapWithRegularGrid(Game engine, double left, double right, double top, double bottom, int density, int dimX, int dimY, MapProjection projection)
{
int[] indexes;
Gis.GeoPoint[] vertices;
var leftTop = projection.WorldToTilePos(left, top, 0);
var rightBottom = projection.WorldToTilePos(right, bottom, 0);
double newleft = leftTop.X;
double newright = rightBottom.X;
double newtop = leftTop.Y;
double newbottom = newtop + (newright - newleft);
var newRightBottom = projection.TileToWorldPos(newright, newbottom, 0);
bottom = newRightBottom.Y;
CalculateVertices(out vertices, out indexes, density, left, right, top, bottom, projection);
return new HeatMapLayer(engine, vertices, indexes, dimX, dimY, false)
{
Left = newleft,
Right = newright,
Top = newtop,
Bottom = newbottom,
GridDensity = density,
Projection = projection
};
}