void DisposeScanbeamList()
{
while ( m_Scanbeam != null ) {
Scanbeam sb2 = m_Scanbeam.next;
m_Scanbeam = null;
m_Scanbeam = sb2;
}
}
//------------------------------------------------------------------------------
protected override bool Reset()
{
if ( !base.Reset() ) return false;
m_Scanbeam = null;
m_ActiveEdges = null;
m_SortedEdges = null;
LocalMinima lm = m_MinimaList;
while (lm != null)
{
InsertScanbeam(lm.Y);
InsertScanbeam(lm.leftBound.ytop);
lm = lm.next;
}
return true;
}
//------------------------------------------------------------------------------
private void InsertScanbeam(int Y)
{
if( m_Scanbeam == null )
{
m_Scanbeam = new Scanbeam();
m_Scanbeam.next = null;
m_Scanbeam.Y = Y;
}
else if( Y > m_Scanbeam.Y )
{
Scanbeam newSb = new Scanbeam();
newSb.Y = Y;
newSb.next = m_Scanbeam;
m_Scanbeam = newSb;
} else
{
Scanbeam sb2 = m_Scanbeam;
while( sb2.next != null && ( Y <= sb2.next.Y ) ) sb2 = sb2.next;
if( Y == sb2.Y ) return; //ie ignores duplicates
Scanbeam newSb = new Scanbeam();
newSb.Y = Y;
newSb.next = sb2.next;
sb2.next = newSb;
}
}
//------------------------------------------------------------------------------
private int PopScanbeam()
{
int Y = m_Scanbeam.Y;
Scanbeam sb2 = m_Scanbeam;
m_Scanbeam = m_Scanbeam.next;
sb2 = null;
return Y;
}
public Clipper()
{
m_Scanbeam = null;
m_ActiveEdges = null;
m_SortedEdges = null;
m_IntersectNodes = null;
m_ExecuteLocked = false;
m_PolyPts = new List<PolyPt>();
m_Joins = new List<JoinRec>();
m_HorizJoins = new List<HorzJoinRec>();
}
