public WPos CenterOfCell(CPos cell)
{
if (Grid.Type == MapGridType.Rectangular)
return new WPos(1024 * cell.X + 512, 1024 * cell.Y + 512, 0);
// Convert from isometric cell position (x, y) to world position (u, v):
// (a) Consider the relationships:
// - Center of origin cell is (512, 512)
// - +x adds (512, 512) to world pos
// - +y adds (-512, 512) to world pos
// (b) Therefore:
// - ax + by adds (a - b) * 512 + 512 to u
// - ax + by adds (a + b) * 512 + 512 to v
var z = Height.Contains(cell) ? 512 * Height[cell] : 0;
return new WPos(512 * (cell.X - cell.Y + 1), 512 * (cell.X + cell.Y + 1), z);
}