/// <summary>Bounds the points in this path to being real workable numbers.
/// NaN and infinities are eliminated.</summary>
public void BoundToReal()
{
// Eliminate NaN/ infinities:
VectorPoint point = FirstPathNode;
while (point != null)
{
point.BoundToReal();
point = point.Next;
}
}
/// <summary>Chops off any sections of this path which are outside the given bounds.
/// This is important when rendering paths which could include infinite points.
/// If we don't chop off path segments which are out of range then the engine would
/// spend very large amounts of time walking along those extremely long paths.</summary>
public void Clip(float minX, float minY, float maxX, float maxY)
{
// Eliminate NaN/ infinities:
VectorPoint point = FirstPathNode;
while (point != null)
{
point.BoundToReal();
point = point.Next;
}
// Each one is checked individually as an actual
// slice may generate new points which would need testing.
// Slice left:
point = FirstPathNode;
while (point != null)
{
VectorPoint next = point.Next;
if (point.HasLine)
{
point.SliceLeft(minX, this);
}
point = next;
}
// Slice right:
point = FirstPathNode;
while (point != null)
{
VectorPoint next = point.Next;
if (point.HasLine)
{
point.SliceRight(maxX, this);
}
point = next;
}
// Slice bottom:
point = FirstPathNode;
while (point != null)
{
VectorPoint next = point.Next;
if (point.HasLine)
{
point.SliceBottom(minY, this);
}
point = next;
}
// Slice top:
point = FirstPathNode;
while (point != null)
{
VectorPoint next = point.Next;
if (point.HasLine)
{
point.SliceTop(maxY, this);
}
point = next;
}
}