/// <summary>
/// 设定地图边界
/// </summary>
/// <param name="tl"></param>
/// <param name="br"></param>
public void SetBounds(PPos tl, PPos br)
{
//The tl and br coordinates are inclusive,but the Rectangle is exclusive.
//Pad the right and bootom edges to match.
Bounds = Rectangle.FromLTRB(tl.U, tl.V, br.U + 1, br.V + 1);
//避免不必要的转换，直接计算地图屏幕投射坐标的世界单位
var wtop = tl.V * 1024;
var wbottom = (br.V + 1) * 1024;
if (Grid.Type == MapGridT.RectangularIsometric)
{
//wtop /= 2;
//wbottom /= 2;
ProjectedTopLeft = new WPos(tl.U * 1448, tl.V * 724, 0);
ProjectedBottomRight = new WPos(br.U * 1448 - 1, (br.V + 1) * 724 - 1, 0);
}
else
{
ProjectedTopLeft = new WPos(tl.U * 1024, wtop, 0);
ProjectedBottomRight = new WPos(br.U * 1024 - 1, wbottom - 1, 0);
}
ProjectedCellBounds = new ProjectedCellRegion(this, tl, br);
}
public ProjectedCellRegionEnumerator(ProjectedCellRegion region)
{
r = region;
Reset();
}