C++ ViewEdge::setB方法代码示例

ViewEdge *ViewEdgeXBuilder::BuildSharpViewEdge(const OWXEdge& iWEdge)
{
	// Start a new sharp chain edges
	ViewEdge *newVEdge = new ViewEdge;
	newVEdge->setId(_currentViewId);
	++_currentViewId;
	unsigned size = 0;

	_pCurrentVShape->AddEdge(newVEdge);

	// Find first edge:
	OWXEdge firstWEdge = iWEdge;
	/* OWXEdge previousWEdge = firstWEdge; */ /* UNUSED */
	OWXEdge currentWEdge = firstWEdge;
	list<OWXEdge> edgesChain;
#if 0 /* TK 02-Sep-2012 Experimental fix for incorrect view edge visibility. */
	// bidirectional chaining
	// first direction:
	while (!stopSharpViewEdge(currentWEdge.e)) {
		edgesChain.push_back(currentWEdge);
		++size;
		currentWEdge.e->userdata = (void *)1; // processed
		// Find the next edge!
		currentWEdge = FindNextWEdge(currentWEdge);
	}
	OWXEdge endWEdge = edgesChain.back();
	// second direction
	currentWEdge = FindPreviousWEdge(firstWEdge);
	while (!stopSharpViewEdge(currentWEdge.e)) {
		edgesChain.push_front(currentWEdge);
		++size;
		currentWEdge.e->userdata = (void *)1; // processed
		// Find the previous edge!
		currentWEdge = FindPreviousWEdge(currentWEdge);
	}
#else
	edgesChain.push_back(currentWEdge);
	++size;
	currentWEdge.e->userdata = (void *)1; // processed
	OWXEdge endWEdge = edgesChain.back();
#endif
	firstWEdge = edgesChain.front();

	// build FEdges
	FEdge *feprevious = NULL;
	FEdge *fefirst = NULL;
	FEdge *fe = NULL;
	for (list<OWXEdge>::iterator we = edgesChain.begin(), weend = edgesChain.end(); we != weend; ++we) {
		fe = BuildSharpFEdge(feprevious, (*we));
		fe->setViewEdge(newVEdge);
		if (!fefirst)
			fefirst = fe;
		feprevious = fe;
	}
	// Store the chain starting edge:
	_pCurrentSShape->AddChain(fefirst);
	newVEdge->setNature(iWEdge.e->nature());
	newVEdge->setFEdgeA(fefirst);
	newVEdge->setFEdgeB(fe);

	// is it a closed loop ?
	if ((firstWEdge == endWEdge) && (size != 1)) {
		fefirst->setPreviousEdge(fe);
		fe->setNextEdge(fefirst);
		newVEdge->setA(0);
		newVEdge->setB(0);
	}
	else {
		ViewVertex *vva = MakeViewVertex(fefirst->vertexA());
		ViewVertex *vvb = MakeViewVertex(fe->vertexB());

		((NonTVertex *)vva)->AddOutgoingViewEdge(newVEdge);
		((NonTVertex *)vvb)->AddIncomingViewEdge(newVEdge);

		newVEdge->setA(vva);
		newVEdge->setB(vvb);
	}

	return newVEdge;
}

ViewVertex *ViewMap::InsertViewVertex(SVertex *iVertex, vector<ViewEdge*>& newViewEdges)
{
	NonTVertex *vva = dynamic_cast<NonTVertex*>(iVertex->viewvertex());
	if (vva)
		return vva;
	// because it is not already a ViewVertex, this SVertex must have only 2 FEdges. The incoming one still belongs
	// to ioEdge, the outgoing one now belongs to newVEdge
	const vector<FEdge *>& fedges = iVertex->fedges();
	if (fedges.size() != 2) {
		cerr << "ViewMap warning: Can't split the ViewEdge" << endl;
		return NULL;
	}
	FEdge *fend(NULL), *fbegin(NULL);
	for (vector<FEdge *>::const_iterator fe = fedges.begin(), feend = fedges.end(); fe != feend; ++fe) {
		if ((*fe)->vertexB() == iVertex) {
			fend = (*fe);
		}
		if ((*fe)->vertexA() == iVertex) {
			fbegin = (*fe);
		}
		if ((fbegin != NULL) && (fend != NULL))
			break;
	}
	ViewEdge *ioEdge = fbegin->viewedge();
	ViewShape *vshape = ioEdge->viewShape();
	vva = new NonTVertex(iVertex);
	// if the ViewEdge is a closed loop, we don't create a new VEdge
	if (ioEdge->A() == 0) {
		// closed loop
		ioEdge->setA(vva);
		ioEdge->setB(vva);
		// update sshape
		vshape->sshape()->RemoveEdgeFromChain(ioEdge->fedgeA());
		vshape->sshape()->RemoveEdgeFromChain(ioEdge->fedgeB());

		ioEdge->setFEdgeA(fbegin);
		ioEdge->setFEdgeB(fend);

		// Update FEdges
		fend->setNextEdge(NULL);
		fbegin->setPreviousEdge(NULL);

		// update new View Vertex:
		vva->AddOutgoingViewEdge(ioEdge);
		vva->AddIncomingViewEdge(ioEdge);

		vshape->sshape()->AddChain(ioEdge->fedgeA());
		vshape->sshape()->AddChain(ioEdge->fedgeB());
	}
	else {
		// Create new ViewEdge
		ViewEdge *newVEdge = new ViewEdge(vva, ioEdge->B(), fbegin, ioEdge->fedgeB(), vshape);
		newVEdge->setId(Id(ioEdge->getId().getFirst(), ioEdge->getId().getSecond() + 1));
		newVEdge->setNature(ioEdge->getNature());
		//newVEdge->UpdateFEdges(); // done in the ViewEdge constructor
		// Update old ViewEdge
		ioEdge->setB(vva);
		ioEdge->setFEdgeB(fend);

		// Update FEdges
		fend->setNextEdge(NULL);
		fbegin->setPreviousEdge(NULL);

		// update new View Vertex:
		vva->AddOutgoingViewEdge(newVEdge);
		vva->AddIncomingViewEdge(ioEdge);

		NonTVertex *vvb = dynamic_cast<NonTVertex*>(newVEdge->B());
		if (vvb)
			vvb->Replace(ioEdge, newVEdge);

		// update ViewShape
		//vshape->AddEdge(newVEdge);
		// update SShape
		vshape->sshape()->AddChain(fbegin);
		// update ViewMap
		//_VEdges.push_back(newVEdge);
		newViewEdges.push_back(newVEdge);
	}

	// update ViewShape
	vshape->AddVertex(vva);

	// update ViewMap
	_VVertices.push_back(vva);

	return vva;
}

ViewEdge *ViewEdgeXBuilder::BuildSmoothViewEdge(const OWXFaceLayer& iFaceLayer)
{
	// Find first edge:
	OWXFaceLayer first = iFaceLayer;
	OWXFaceLayer currentFace = first;

	// bidirectional chaining.
	// first direction
	list<OWXFaceLayer> facesChain;
	unsigned size = 0;
	while (!stopSmoothViewEdge(currentFace.fl)) {
		facesChain.push_back(currentFace);
		++size;
		currentFace.fl->userdata = (void *)1; // processed
		// Find the next edge!
		currentFace = FindNextFaceLayer(currentFace);
	}
	OWXFaceLayer end = facesChain.back();
	// second direction
	currentFace = FindPreviousFaceLayer(first);
	while (!stopSmoothViewEdge(currentFace.fl)) {
		facesChain.push_front(currentFace);
		++size;
		currentFace.fl->userdata = (void *)1; // processed
		// Find the previous edge!
		currentFace = FindPreviousFaceLayer(currentFace);
	}
	first = facesChain.front();

	if (iFaceLayer.fl->nature() & Nature::RIDGE) {
		if (size < 4) {
			return 0;
		}
	}

	// Start a new chain edges
	ViewEdge *newVEdge = new ViewEdge;
	newVEdge->setId(_currentViewId);
	++_currentViewId;

	_pCurrentVShape->AddEdge(newVEdge);

	// build FEdges
	FEdge *feprevious = NULL;
	FEdge *fefirst = NULL;
	FEdge *fe = NULL;
	for (list<OWXFaceLayer>::iterator fl = facesChain.begin(), flend = facesChain.end(); fl != flend; ++fl) {
		fe = BuildSmoothFEdge(feprevious, (*fl));
		if (feprevious && fe == feprevious)
			continue;
		fe->setViewEdge(newVEdge);
		if (!fefirst)
			fefirst = fe;
		feprevious = fe;
	}
	// Store the chain starting edge:
	_pCurrentSShape->AddChain(fefirst);
	newVEdge->setNature(iFaceLayer.fl->nature());
	newVEdge->setFEdgeA(fefirst);
	newVEdge->setFEdgeB(fe);

	// is it a closed loop ?
	if ((first == end) && (size != 1)) {
		fefirst->setPreviousEdge(fe);
		fe->setNextEdge(fefirst);
		newVEdge->setA(0);
		newVEdge->setB(0);
	}
	else {
		ViewVertex *vva = MakeViewVertex(fefirst->vertexA());
		ViewVertex *vvb = MakeViewVertex(fe->vertexB());

		((NonTVertex *)vva)->AddOutgoingViewEdge(newVEdge);
		((NonTVertex *)vvb)->AddIncomingViewEdge(newVEdge);

		newVEdge->setA(vva);
		newVEdge->setB(vvb);
	}

	return newVEdge;
}