private static void UpdateEdge(HalfEdge edgeToRemove, KeyedPriorityQueue <int, HalfEdge, float> priorityQueue, HashSet <EdgeID> deletedEdgeSet, List <Vector2> pointList)
{
HalfEdge left = GetUndeletedLeft(edgeToRemove, deletedEdgeSet);
HalfEdge right = GetUndeletedRight(edgeToRemove, deletedEdgeSet);
HalfEdge reLeft = RepresentActive(left);
if (priorityQueue.Contain(reLeft.mKey))
{
// Check if this is still removable
HalfEdge leftOfLeft = GetUndeletedLeft(left.mPartner, deletedEdgeSet);
if ((leftOfLeft.mPartner != null && (leftOfLeft.mPartner.mKey == right.mKey || leftOfLeft.mPartner.mKey == edgeToRemove.mKey)) ||
!GeoPolygonUtils.IsConvex(pointList[edgeToRemove.mIndex], pointList[right.mNext.mIndex], pointList[leftOfLeft.mIndex]))
{
priorityQueue.Remove(reLeft.mKey);
}
else
{
// Need to update the priority
float pri = GetSmallestAdjacentAngleOnEdge(left, deletedEdgeSet, pointList);
priorityQueue.Remove(reLeft.mKey);
priorityQueue.Enqueue(reLeft.mKey, reLeft, pri);
}
}
HalfEdge reRight = RepresentActive(right);
if (priorityQueue.Contain(reRight.mKey))
{
HalfEdge rightOfRight = GetUndeletedRight(right, deletedEdgeSet);
if ((rightOfRight.mPartner != null && (rightOfRight.mPartner.mKey == left.mKey || rightOfRight.mKey == edgeToRemove.mKey)) ||
!GeoPolygonUtils.IsConvex(pointList[edgeToRemove.mIndex], pointList[rightOfRight.mNext.mIndex], pointList[left.mIndex]))
{
priorityQueue.Remove(reRight.mKey);
}
else
{
priorityQueue.Remove(reRight.mKey);
priorityQueue.Enqueue(reRight.mKey, reRight, GetSmallestAdjacentAngleOnEdge(right, deletedEdgeSet, pointList));
}
}
}