private void ExecuteConvexityCheck()
{
Debug.Assert(workItems.Count < RecursiveOverflowAmount, "BSP recursive overflow detected");
switch (ConvexChecker.States.State)
{
case ConvexState.Loaded:
case ConvexState.Traversing:
ConvexChecker.Execute();
break;
case ConvexState.FinishedIsDegenerate:
foundDegenerateNode = true;
goto case ConvexState.FinishedIsConvex;
case ConvexState.FinishedIsConvex:
State = BspState.CreatingLeafNode;
break;
case ConvexState.FinishedIsSplittable:
WorkItem workItem = workItems.Peek();
SplitCalculator.Load(workItem.Segments);
State = BspState.FindingSplitter;
break;
}
}
private void LoadNextWorkItem()
{
Debug.Assert(workItems.Count > 0, "Expected a root work item to be present");
ConvexChecker.Load(workItems.Peek().Segments);
State = BspState.CheckingConvexity;
}
private void ExecuteMinisegGeneration()
{
switch (MinisegCreator.States.State)
{
case MinisegState.Loaded:
case MinisegState.Working:
MinisegCreator.Execute();
break;
case MinisegState.Finished:
State = BspState.FinishingSplit;
break;
}
}
private void ExecuteSplitterFinding()
{
switch (SplitCalculator.States.State)
{
case SplitterState.Loaded:
case SplitterState.Working:
SplitCalculator.Execute();
break;
case SplitterState.Finished:
Partitioner.Load(SplitCalculator.States.BestSplitter, workItems.Peek().Segments);
State = BspState.PartitioningSegments;
break;
}
}
/// <summary>
/// Advances to the next major state.
/// </summary>
public void ExecuteMajorStep()
{
if (Done)
{
return;
}
BspState originalState = State;
BspState currentState = State;
while (originalState == currentState && !Done)
{
Execute();
currentState = State;
}
}
private void ExecuteSegmentPartitioning()
{
switch (Partitioner.States.State)
{
case PartitionState.Loaded:
case PartitionState.Working:
Partitioner.Execute();
break;
case PartitionState.Finished:
if (Partitioner.States.Splitter == null)
{
throw new NullReferenceException("Unexpected null partition splitter");
}
BspSegment splitter = Partitioner.States.Splitter;
MinisegCreator.Load(splitter, Partitioner.States.CollinearVertices);
State = BspState.GeneratingMinisegs;
break;
}
}
private void ExecuteLeafNodeCreation()
{
ConvexState convexState = ConvexChecker.States.State;
Debug.Assert(convexState == ConvexState.FinishedIsDegenerate || convexState == ConvexState.FinishedIsConvex, "Unexpected BSP leaf building state");
if (convexState == ConvexState.FinishedIsConvex)
{
AddConvexTraversalToTopNode();
}
workItems.Pop();
if (workItems.Empty())
{
State = BspState.Complete;
}
else
{
LoadNextWorkItem();
}
}