/// <summary>
/// Determines if two rings are spatially equal.
/// </summary>
/// <param name="other">Another ring to compare.</param>
/// <returns>true when the given ring is spatially equal to this ring.</returns>
public bool SpatiallyEqual(Ring2 other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (Equals(other))
{
return(true);
}
if (GetMbr() != other.GetMbr())
{
return(false);
}
if (DetermineWinding() != other.DetermineWinding())
{
return(false);
}
if (!Hole.HasValue && other.Hole.HasValue || Hole.HasValue && !other.Hole.HasValue)
{
if (DetermineWinding() != other.DetermineWinding())
{
return(false);
}
}
else
{
if (FillSide != other.FillSide)
{
return(false);
}
}
// TODO: MUST OPTIMIZE THIS GARBAGE
if (!AllPointsOnBoundary(this, other))
{
return(false);
}
if (!AllPointsOnBoundary(other, this))
{
return(false);
}
return(true);
}
/// <summary>
/// Determines if this ring is within the given ring.
/// </summary>
/// <param name="testContainer">The ring to test with.</param>
/// <returns>true if this ring is within the other ring.</returns>
internal bool NonIntersectingWithin(Ring2 testContainer)
{
Contract.Ensures(testContainer != null || !Contract.Result <bool>());
if (testContainer == null)
{
return(false);
}
var thisMbr = GetMbr();
if (thisMbr == null)
{
return(false);
}
var containerMbr = testContainer.GetMbr();
if (containerMbr == null)
{
return(false);
}
var notEqual = !thisMbr.Equals(containerMbr);
var bestResultGuess = notEqual;
if (testContainer.Hole.HasValue && testContainer.Hole.Value)
{
if (thisMbr.Intersects(containerMbr))
{
if (notEqual)
{
if (thisMbr.Contains(containerMbr))
{
bestResultGuess = true;
}
else if (containerMbr.Contains(thisMbr))
{
bestResultGuess = false;
}
}
}
else
{
return(true);
}
}
else
{
if (thisMbr.Intersects(containerMbr))
{
if (notEqual)
{
if (thisMbr.Contains(containerMbr))
{
bestResultGuess = false;
}
if (containerMbr.Contains(thisMbr))
{
bestResultGuess = true;
}
}
}
else
{
return(false);
}
}
// need to test points
bool mayHaveIt = false;
foreach (var p in this)
{
int res = testContainer.AdvancedIntersectionTest(p);
if (res > 0)
{
return(true);
}
if (res < 0)
{
return(false);
}
mayHaveIt = bestResultGuess;
}
return(mayHaveIt);
}