private void Add(Edge edge, int geomIndex)
{
MonotoneChainEdge mce = edge.GetMonotoneChainEdge();
int[] startIndex = mce.StartIndex;
for (int i = 0; i < startIndex.Length - 1; i++)
{
MonotoneChain mc = new MonotoneChain( mce, i, geomIndex );
SweepLineEvent insertEvent = new SweepLineEvent( geomIndex, mce.GetMinX(i), null, mc);
_events.Add( insertEvent );
_events.Add( new SweepLineEvent( geomIndex, mce.GetMaxX(i), insertEvent, mc) );
}
}
/// <summary>
///
/// </summary>
/// <param name="mc"></param>
/// <param name="si"></param>
public void ComputeIntersections(MonotoneChain mc, SegmentIntersector si)
{
_mce.ComputeIntersectsForChain(_chainIndex, mc.MonotoneChainEdge, mc.ChainIndex, si);
}
private void ProcessOverlaps(int start, int end, MonotoneChain mc0, SegmentIntersector si, bool doMutualOnly)
{
// Since we might need to test for self-intersections,
// include current insert event object in list of event objects to test.
// Last index can be skipped, because it must be a Delete event.
for ( int i = start; i < end; i++ )
{
SweepLineEvent ev = (SweepLineEvent) _events[i];
if ( ev.IsInsert )
{
MonotoneChain mc1 = (MonotoneChain) ev.Object;
if ( !doMutualOnly || ( mc0.GeomIndex != mc1.GeomIndex ) )
{
mc0.ComputeIntersections( mc1, si );
_nOverlaps++;
}
}
} // for ( int i = start; i < end; i++ )
}
/// <summary>
///
/// </summary>
/// <param name="mc"></param>
/// <param name="si"></param>
public void ComputeIntersections(MonotoneChain mc, SegmentIntersector si)
{
_mce.ComputeIntersectsForChain( _chainIndex, mc.MonotoneChainEdge, mc.ChainIndex, si);
}