public bool FindTileInMask(Mask m, bool pngTileOnly, ref TileXY txy)
{
foreach (KeyValuePair <TileXY, TileMeta> pair in tiles)
{
if (!m.ContainsTile(pair.Key))
{
continue;
}
if (!pngTileOnly || pair.Value.hasAlpha)
{
txy = pair.Key;
while (true)
{
bool hasParent = false;
TileXY[] parents = txy.GetParent().GetSiblings();
for (int i = 0; i < 4; i++)
{
if (m.ContainsTile(parents[i]) && tiles.ContainsKey(parents[i]) && (!pngTileOnly || tiles[parents[i]].hasAlpha))
{
txy = parents[i];
hasParent = true;
break;
}
}
if (!hasParent || txy.level == 0)
{
break;
}
}
return(true);
}
}
return(false);
}
public void MoveTo(int offsetx, int offsety, bool isZoomOut, bool isZoomIn)
{
// get target location
TileXY targetXY = centerTilexy;
if (isZoomOut)
{
targetXY = centerTilexy.GetParent();
}
else if (isZoomIn)
{
TileXY[] sons = centerTilexy.GetSon().GetSiblings();
foreach (TileXY txy in sons)
{
targetXY = txy;
if (tiles.ContainsKey(targetXY))
{
break;
}
}
}
else
{
targetXY = centerTilexy.GetNeighbor(offsetx, offsety);
}
// move the center and paint
centerTilexy = targetXY;
Paint();
}