public static bool TryGetComponentAt(
this IReadOnlyBorder border,
Coord coord,
out BorderComponentType component,
out IReadOnlyRegion componentRegion)
{
if (!border.OuterRegion.Overlaps(coord))
{
goto fail;
}
for (int y = 2; 0 < y; y--)
{
for (int x = 2; 0 < x; x--)
{
BorderComponentType type = ComponentTypes[y, x];
IReadOnlyRegion region = border.GetComponent(type);
if (region.Overlaps(coord))
{
component = type;
componentRegion = region;
return(true);
}
}
}
fail:
component = default;
componentRegion = default !;
public static bool Overlaps(this IReadOnlyRegion region1, IReadOnlyRegion region2)
{
if (region1 is null)
{
throw new ArgumentNullException(nameof(region1));
}
if (region2 is null)
{
throw new ArgumentNullException(nameof(region2));
}
return(region1.Overlaps(region2.ToRectangle()));
}