private List <ISpatial> Cast <T>(int x0, int y0, int x1, int y1, bool needMany, out Vector2 finalPoint)
{
int dx = Math.Abs(x1 - x0);
int dy = Math.Abs(y1 - y0);
int sx;
int sy;
if (x0 < x1)
{
sx = 1;
}
else
{
sx = -1;
}
if (y0 < y1)
{
sy = 1;
}
else
{
sy = -1;
}
int err = dx - dy;
int e2;
var temp = new List <ISpatial>();
while (true)
{
finalPoint = new Vector2(x0, y0);
var res = _mapSpatialCollection.GetMany(finalPoint).OfType <T>();
foreach (ISpatial s in res)
{
// Don't add the same ISpatial twice
if (!temp.Contains(s))
{
// Don't add ourselves
if (s != _owner)
{
temp.Add(s);
}
// Only return the first if required
if (!temp.IsEmpty() && !needMany)
{
return(temp);
}
}
}
if ((x0 == x1) && (y0 == y1))
{
break;
}
e2 = err << 1;
if (e2 > -dy)
{
err = err - dy;
x0 = x0 + sx;
}
if (e2 < dx)
{
err = err + dx;
y0 = y0 + sy;
}
}
if (!temp.IsEmpty())
{
return(temp);
}
return(null);
}
/// <summary>
/// Gets the <see cref="ISpatial"/>s found intersecting the given region.
/// </summary>
/// <param name="c">The <see cref="ISpatialCollection"/>.</param>
/// <param name="spatial">The <see cref="ISpatial"/> representing the map area to check.</param>
/// <typeparam name="T">Type of ISpatial to convert to.</typeparam>
/// <returns>List of all <see cref="ISpatial"/>s found intersecting the given region.</returns>
public static IEnumerable <T> GetMany <T>(this ISpatialCollection c, ISpatial spatial)
{
return(c.GetMany <T>(spatial.ToRectangle()));
}
private ISpatial Cast <T>(int x0, int y0, int x1, int y1, out Vector2 finalPoint)
{
int dx = Math.Abs(x1 - x0);
int dy = Math.Abs(y1 - y0);
int sx = 0;
int sy = 0;
if (x0 < x1)
{
sx = 1;
}
else
{
sx = -1;
}
if (y0 < y1)
{
sy = 1;
}
else
{
sy = -1;
}
int err = dx - dy;
int e2;
while (true)
{
finalPoint = new Vector2(x0, y0);
var res = _mapSpatialCollection.GetMany(finalPoint).OfType <T>();
if (res.Count() > 0)
{
return(_mapSpatialCollection.Get(finalPoint));
}
if ((x0 == x1) && (y0 == y1))
{
break;
}
e2 = err << 1;
if (e2 > -dy)
{
err = err - dy;
x0 = x0 + sx;
}
if (e2 < dx)
{
err = err + dx;
y0 = y0 + sy;
}
}
return(null);
}
/// <summary>
/// Gets the <see cref="ISpatial"/>s found intersecting the given region.
/// </summary>
/// <param name="c">The <see cref="ISpatialCollection"/>.</param>
/// <param name="spatial">The <see cref="ISpatial"/> representing the map area to check.</param>
/// <param name="condition">Condition the <see cref="ISpatial"/>s must meet.</param>
/// <typeparam name="T">Type of ISpatial to convert to.</typeparam>
/// <returns>List of all <see cref="ISpatial"/>s found intersecting the given region.</returns>
public static IEnumerable <T> GetMany <T>(this ISpatialCollection c, ISpatial spatial, Predicate <T> condition)
{
return(c.GetMany(spatial.ToRectangle(), condition));
}