lib3mf/Source/Model/Classes/NMR_ModelMeshObject.cpp

/*++

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Abstract:

NMR_ModelMeshObject.cpp implements the Model Mesh Object Class.
A model mesh object is an in memory representation of the 3MF
mesh object.

--*/

#include "Model/Classes/NMR_ModelObject.h" 
#include "Model/Classes/NMR_ModelMeshObject.h" 
#include "Common/Math/NMR_PairMatchingTree.h" 

namespace NMR {

	CModelMeshObject::CModelMeshObject(_In_ const ModelResourceID sID, _In_ CModel * pModel)
		: CModelObject(sID, pModel)
	{
		m_pMesh = std::make_shared<CMesh>();
		m_pBeamLatticeAttributes = std::make_shared<CModelMeshBeamLatticeAttributes>();
	}

	CModelMeshObject::CModelMeshObject(_In_ const ModelResourceID sID, _In_ CModel * pModel, _In_ PMesh pMesh)
		: CModelObject(sID, pModel)
	{
		m_pMesh = pMesh;
		if (m_pMesh.get() == nullptr)
			m_pMesh = std::make_shared<CMesh>();
		m_pBeamLatticeAttributes = std::make_shared<CModelMeshBeamLatticeAttributes>();
	}

	CModelMeshObject::~CModelMeshObject()
	{
		m_pMesh = NULL;
	}

	_Ret_notnull_ CMesh * CModelMeshObject::getMesh()
	{
		return m_pMesh.get();
	}

	void CModelMeshObject::setMesh(_In_ PMesh pMesh)
	{
		if (!pMesh)
			throw CNMRException(NMR_ERROR_INVALIDPARAM);

		m_pMesh = pMesh;
	}

	void CModelMeshObject::mergeToMesh(_In_ CMesh * pMesh, _In_ const NMATRIX3 mMatrix)
	{
		__NMRASSERT(pMesh);
		pMesh->mergeMesh(m_pMesh.get(), mMatrix);
	}

	void CModelMeshObject::setObjectType(_In_ eModelObjectType ObjectType)
	{
		if ((ObjectType != MODELOBJECTTYPE_MODEL) && (ObjectType != MODELOBJECTTYPE_SOLIDSUPPORT)) {
			if (m_pMesh->getBeamCount() > 0)
				throw CNMRException(NMR_ERROR_BEAMLATTICE_INVALID_OBJECTTYPE);
		}
		CModelObject::setObjectType(ObjectType);
	}

	nfBool CModelMeshObject::isValid()
	{
		eModelObjectType eType = getObjectType();
		switch (eType) {
		case MODELOBJECTTYPE_MODEL: return isManifoldAndOriented();
		case MODELOBJECTTYPE_SUPPORT: return true;
		case MODELOBJECTTYPE_SOLIDSUPPORT: return isManifoldAndOriented();
		case MODELOBJECTTYPE_SURFACE: return true;
		default:
			return false;

		}
	}

	nfBool CModelMeshObject::hasSlices(nfBool bRecursive)
	{
		return (this->getSliceStack().get() != nullptr);
	}

	nfBool CModelMeshObject::isValidForSlices(const NMATRIX3& totalParentMatrix)
	{
		if (!this->getSliceStack().get()) {
			return true;
		}
		else {
			return fnMATRIX3_isplanar(totalParentMatrix);
		}
	}

	nfBool CModelMeshObject::isValidForBeamLattices()
	{
		return ( (getObjectType() == eModelObjectType::MODELOBJECTTYPE_MODEL) || (getObjectType() == eModelObjectType::MODELOBJECTTYPE_SOLIDSUPPORT) );
	}

	nfBool CModelMeshObject::isManifoldAndOriented()
	{
		if (!m_pMesh->checkSanity())
			return false;

		nfUint32 nNodeCount = m_pMesh->getNodeCount();
		nfUint32 nFaceCount = m_pMesh->getFaceCount();

		if (nNodeCount < 3)
			return false;
		if (nFaceCount < 3)
			return false;

		CPairMatchingTree PairMatchingTree;
		nfUint32 nFaceIndex;
		nfInt32 nEdgeIndex;
		nfInt32 nEdgeCounter = 0;
		nfUint32 j;

		// Build Edge Tree
		for (nFaceIndex = 0; nFaceIndex < nFaceCount; nFaceIndex++) {
			MESHFACE * pFace = m_pMesh->getFace(nFaceIndex);

			for (j = 0; j < 3; j++) {
				nfInt32 nNodeIndex1 = pFace->m_nodeindices[j];
				nfInt32 nNodeIndex2 = pFace->m_nodeindices[(j + 1) % 3];

				if (!PairMatchingTree.checkMatch(nNodeIndex1, nNodeIndex2, nEdgeIndex)) {
					PairMatchingTree.addMatch(nNodeIndex1, nNodeIndex2, nEdgeCounter);
					nEdgeCounter++;

					if (nEdgeCounter > NMR_MESH_MAXEDGECOUNT)
						throw CNMRException(NMR_ERROR_INVALIDEDGEINDEX);
				}
			}

		}

		// Count positively and negatively oriented edges...
		std::vector<nfInt32> PositiveOrientations;
		std::vector<nfInt32> NegativeOrientations;

		// Create Edge arrays
		PositiveOrientations.resize(nEdgeCounter);
		NegativeOrientations.resize(nEdgeCounter);
		for (nEdgeIndex = 0; nEdgeIndex < nEdgeCounter; nEdgeIndex++) {
			PositiveOrientations[nEdgeIndex] = 0;
			NegativeOrientations[nEdgeIndex] = 0;
		}

		for (nFaceIndex = 0; nFaceIndex < nFaceCount; nFaceIndex++) {
			MESHFACE * pFace = m_pMesh->getFace(nFaceIndex);

			for (j = 0; j < 3; j++) {
				nfInt32 nNodeIndex1 = pFace->m_nodeindices[j];
				nfInt32 nNodeIndex2 = pFace->m_nodeindices[(j + 1) % 3];

				if (PairMatchingTree.checkMatch(nNodeIndex1, nNodeIndex2, nEdgeIndex)) {
					if ((nEdgeIndex < 0) || (nEdgeIndex >= nEdgeCounter))
						throw CNMRException(NMR_ERROR_INVALIDEDGEINDEX);

					if (nNodeIndex1 <= nNodeIndex2) {
						PositiveOrientations[nEdgeIndex]++;
					}
					else {
						NegativeOrientations[nEdgeIndex]++;
					}
				}
				else {
					throw CNMRException(NMR_ERROR_INVALIDMESHTOPOLOGY);
				}
			}
		}

		// Check Edge Orientations and determine manifoldness
		for (nEdgeIndex = 0; nEdgeIndex < nEdgeCounter; nEdgeIndex++) {
			if (PositiveOrientations[nEdgeIndex] != 1)
				return false;
			if (NegativeOrientations[nEdgeIndex] != 1)
				return false;
		}

		// Mesh is non-empty, oriented and manifold
		return true;
	}


	_Ret_notnull_ PModelMeshBeamLatticeAttributes CModelMeshObject::getBeamLatticeAttributes()
	{
		return m_pBeamLatticeAttributes;
	}

	void CModelMeshObject::setBeamLatticeAttributes(_In_ PModelMeshBeamLatticeAttributes pBeamLatticeAttributes)
	{
		if (!pBeamLatticeAttributes)
			throw CNMRException(NMR_ERROR_INVALIDPARAM);

		m_pBeamLatticeAttributes = pBeamLatticeAttributes;
	}

	void CModelMeshObject::extendOutbox(_Out_ NOUTBOX3& vOutBox, _In_ const NMATRIX3 mAccumulatedMatrix)
	{
		m_pMesh->extendOutbox(vOutBox, mAccumulatedMatrix);
	}
}