/**
* Does this tile area intersect with another?
* @param ta the other tile area to check against.
* @return true if they intersect.
*/
public bool Intersects(ref TileArea ta)
{
if (ta.w == 0 || w == 0)
{
return(false);
}
if (ta.w == 0 || ta.h == 0 || w == 0 || h == 0)
{
throw new InvalidOperationException("neither the supplied or this area contains anything");
}
uint left1 = Map.TileX(tile);
uint top1 = Map.TileY(tile);
uint right1 = left1 + w - 1;
uint bottom1 = top1 + h - 1;
uint left2 = Map.TileX(ta.tile);
uint top2 = Map.TileY(ta.tile);
uint right2 = left2 + ta.w - 1;
uint bottom2 = top2 + ta.h - 1;
return(!(
left2 > right1 ||
right2 < left1 ||
top2 > bottom1 ||
bottom2 < top1
));
}
/// The current 'y' position in the rectangle.
/**
* Construct the iterator.
* @param ta Area, i.e. begin point and width/height of to-be-iterated area.
*/
public OrthogonalTileIterator(TileArea ta) : base(ta.tile)
{
if (ta.w == 0 || ta.h == 0)
{
tile = TileConstants.INVALID_TILE;
}
w = ta.w;
x = ta.w;
y = ta.h;
}
public TileMatrix()
{
area = new TileArea(TileConstants.INVALID_TILE, 0, 0);
data = null;
}