public IActionResult Get(int z, int x, int y)
{
using (var destinationImage = new Image <Rgba32>(TileSize, TileSize))
{
if (z >= 7)
{
var hexSize = 500;
var size = (int)(hexSize / Math.Pow(2, 10 - z));
var hexagonDefinition = new HexagonDefinition(size, 10);
//Tile offset
var pixelX = x * TileSize;
var pixelY = y * TileSize;
var topLeft = new PointXY(pixelX - size, pixelY - size);
var bottomRight = new PointXY(pixelX + TileSize + size, pixelY + TileSize + size);
foreach (HexagonLocationUV hexagon in HexagonUtils.GetHexagonsInsideBoundingBox(topLeft, bottomRight, hexagonDefinition))
{
PointXY center = HexagonUtils.GetCenterPointXYOfHexagonLocationUV(hexagon, hexagonDefinition);
IList <PointXY> hexagonPoints = HexagonUtils
.GetHexagonPixels(size, new PointXY(center.X - pixelX, center.Y - pixelY)).ToList();
PointF[] points = hexagonPoints.Select(p => new PointF((float)p.X, (float)p.Y)).ToArray();
destinationImage.Mutate(ctx => ctx
.DrawLines(
new Rgba32(200, 200, 200, 200),
5,
points)
.DrawLines(
new Rgba32(100, 100, 100, 200),
2,
points));
}
}
Stream outputStream = new MemoryStream();
destinationImage.Save(outputStream, new PngEncoder());
outputStream.Seek(0, SeekOrigin.Begin);
return(this.File(outputStream, "image/png"));
}
}