/// <summary>
/// Removes the inbound/outbound target intersections that would allow going into a dead-end.
/// This analysis has to be performed on a per-source-ring basis.
/// </summary>
/// <param name="intersectionsInboundTarget"></param>
/// <param name="intersectionsOutboundTarget"></param>
protected virtual void RemoveDeadEndIntersections(
IList <IntersectionPoint3D> intersectionsInboundTarget,
IList <IntersectionPoint3D> intersectionsOutboundTarget)
{
var firstAlongTarget = IntersectionsAlongTarget.FirstOrDefault();
if (firstAlongTarget != null &&
intersectionsOutboundTarget.Contains(firstAlongTarget))
{
intersectionsOutboundTarget.Remove(firstAlongTarget);
}
var lastAlongTarget = IntersectionsAlongTarget.LastOrDefault();
if (lastAlongTarget != null &&
intersectionsInboundTarget.Contains(lastAlongTarget))
{
// dangle at the end of the cut line
intersectionsInboundTarget.Remove(lastAlongTarget);
}
}
protected override void RemoveDeadEndIntersections(
IList <IntersectionPoint3D> intersectionsInboundTarget,
IList <IntersectionPoint3D> intersectionsOutboundTarget)
{
foreach (int sourcePartIdx in _intersectionPoints
.Select(ip => ip.SourcePartIndex).Distinct())
{
var firstAlongTarget =
IntersectionsAlongTarget.FirstOrDefault(
ip => ip.SourcePartIndex == sourcePartIdx);
if (firstAlongTarget != null &&
intersectionsOutboundTarget.Contains(firstAlongTarget))
{
// The first intersection is outbound -> cannot cut, unless this part is closed
if (!Target.GetPart(firstAlongTarget.TargetPartIndex).IsClosed)
{
intersectionsOutboundTarget.Remove(firstAlongTarget);
}
}
var lastAlongTarget =
IntersectionsAlongTarget.LastOrDefault(
ip => ip.SourcePartIndex == sourcePartIdx);
if (lastAlongTarget != null &&
intersectionsInboundTarget.Contains(lastAlongTarget))
{
// dangle at the end of the cut line: cannot cut, unless the part is closed
if (!Target.GetPart(lastAlongTarget.TargetPartIndex).IsClosed)
{
intersectionsInboundTarget.Remove(lastAlongTarget);
}
}
}
}