C++ NormsIndexesTableType::addElement方法代码示例

void ccGenericMesh::applyGLTransformation(const ccGLMatrix& trans)
{
    //vertices should be handled another way!

    //we must take care of the triangle normals!
    if (m_triNormals && (!getParent() || !getParent()->isKindOf(CC_MESH)))
    {
        bool recoded = false;

        //if there is more triangle normals than the size of the compressed
        //normals array, we recompress the array instead of recompressing each normal
        unsigned i,numTriNormals = m_triNormals->currentSize();
        if (numTriNormals>ccNormalVectors::GetNumberOfVectors())
        {
            NormsIndexesTableType* newNorms = new NormsIndexesTableType;
            if (newNorms->reserve(ccNormalVectors::GetNumberOfVectors()))
            {
                for (i=0; i<ccNormalVectors::GetNumberOfVectors(); i++)
                {
                    CCVector3 new_n(ccNormalVectors::GetNormal(i));
                    trans.applyRotation(new_n);
                    normsType newNormIndex = ccNormalVectors::GetNormIndex(new_n.u);
                    newNorms->addElement(newNormIndex);
                }

                m_triNormals->placeIteratorAtBegining();
                for (i=0; i<numTriNormals; i++)
                {
                    m_triNormals->setValue(i,newNorms->getValue(m_triNormals->getCurrentValue()));
                    m_triNormals->forwardIterator();
                }
                recoded=true;
            }
            newNorms->clear();
            newNorms->release();
            newNorms=0;
        }

        //if there is less triangle normals than the compressed normals array size
        //(or if there is not enough memory to instantiate the temporary array),
        //we recompress each normal ...
        if (!recoded)
        {
            //on recode direct chaque normale
            m_triNormals->placeIteratorAtBegining();
            for (i=0; i<numTriNormals; i++)
            {
                normsType* _theNormIndex = m_triNormals->getCurrentValuePtr();
                CCVector3 new_n(ccNormalVectors::GetNormal(*_theNormIndex));
                trans.applyRotation(new_n.u);
                *_theNormIndex = ccNormalVectors::GetNormIndex(new_n.u);
                m_triNormals->forwardIterator();
            }
        }
    }
    else
    {
        //TODO: process failed!
    }
}

const ccGenericPrimitive& ccGenericPrimitive::operator += (const ccGenericPrimitive& prim)
{
	ccPointCloud* verts = vertices();
	unsigned vertCount = verts->size();
	unsigned facesCount = size();
	unsigned triFacesNormCount = (m_triNormals ? m_triNormals->currentSize() : 0);

	//count new number of vertices & faces
	unsigned newVertCount = vertCount + prim.getAssociatedCloud()->size();
	unsigned newFacesCount = facesCount + prim.size();
	bool primHasVertNorms = prim.getAssociatedCloud()->hasNormals();
	bool primHasFaceNorms = prim.hasTriNormals();

	//reserve memory
	if (verts->reserve(newVertCount)
		&& (!primHasVertNorms || verts->reserveTheNormsTable())
		&& reserve(newFacesCount)
		&& (!primHasFaceNorms || m_triNormalIndexes || reservePerTriangleNormalIndexes()))
	{
		//copy vertices & normals
		ccGenericPointCloud* cloud = prim.getAssociatedCloud();
		unsigned i;
		for (i=0;i<cloud->size();++i)
		{
			verts->addPoint(*cloud->getPoint(i));
			if (primHasVertNorms)
				verts->addNormIndex(cloud->getPointNormalIndex(i));
		}

		//copy face normals
		if (primHasFaceNorms)
		{
			const NormsIndexesTableType* primNorms = prim.getTriNormsTable();
			assert(primNorms);
			unsigned primTriNormCount = primNorms->currentSize();

			NormsIndexesTableType* normsTable = (m_triNormals ? m_triNormals : new NormsIndexesTableType());
			if (!normsTable || !normsTable->reserve(triFacesNormCount+primTriNormCount))
			{
				ccLog::Error("[ccGenericPrimitive::operator +] Not enough memory!");
				return *this;
			}

			//attach table if not done already
			if (!m_triNormals)
			{
				setTriNormsTable(normsTable);
				assert(m_triNormals);
				//primitives must have their normal table as child!
				addChild(m_triNormals);
			}

			for (unsigned i=0; i<primTriNormCount; ++i)
				normsTable->addElement(primNorms->getValue(i));
		}

		//copy faces
		for (i=0;i<prim.size();++i)
		{
			const CCLib::TriangleSummitsIndexes* tsi = prim.getTriangleIndexes(i);
			addTriangle(vertCount+tsi->i1,vertCount+tsi->i2,vertCount+tsi->i3);
			if (primHasFaceNorms)
			{
				const int* normIndexes = prim.m_triNormalIndexes->getValue(i);
				assert(normIndexes);
				addTriangleNormalIndexes(triFacesNormCount+normIndexes[0],triFacesNormCount+normIndexes[1],triFacesNormCount+normIndexes[2]);
			}
		}
	}
	else
	{
		ccLog::Error("[ccGenericPrimitive::operator +] Not enough memory!");
	}

	return *this;
}

//.........这里部分代码省略.........
			mesh->setTriNormsTable(normsTable);
			mesh->addChild(normsTable);
			vertices->showNormals(true);
			mesh->showNormals(true);
		}
	}

	//import textures UV
	int perVertexUV = -1;
	bool hasTexUV = false;
	{
		for (int l=0; l<fbxMesh->GetElementUVCount(); ++l)
		{
			FbxGeometryElementUV* leUV = fbxMesh->GetElementUV(l);
			//per-point UV coordinates
			if (leUV->GetMappingMode() == FbxGeometryElement::eByControlPoint)
			{
				TextureCoordsContainer* vertTexUVTable = new TextureCoordsContainer();
				if (!vertTexUVTable->reserve(vertCount) || !mesh->reservePerTriangleTexCoordIndexes())
				{
					vertTexUVTable->release();
					ccLog::Warning(QString("[FBX] Not enough memory to load mesh '%1' UV coordinates!").arg(fbxMesh->GetName()));
				}
				else
				{
					FbxLayerElement::EReferenceMode refMode = leUV->GetReferenceMode();
					for (int i=0; i<vertCount; ++i)
					{
						int id = refMode != FbxGeometryElement::eDirect ? leUV->GetIndexArray().GetAt(i) : i;
						FbxVector2 uv = leUV->GetDirectArray().GetAt(id);
						//convert to CC-structure
						float uvf[2] = {static_cast<float>(uv.Buffer()[0]),
										static_cast<float>(uv.Buffer()[1])};
						vertTexUVTable->addElement(uvf);
					}
					mesh->addChild(vertTexUVTable);
					hasTexUV = true;
				}
				perVertexUV = -1;
				break; //no need to look to the other UV fields (can't handle them!)
			}
			else if (leUV->GetMappingMode() == FbxGeometryElement::eByPolygonVertex)
			{
				//per-vertex UV coordinates
				perVertexUV = l;
			}
		}
	}

	//per-vertex UV coordinates
	TextureCoordsContainer* texUVTable = 0;
	if (perVertexUV >= 0)
	{
		texUVTable = new TextureCoordsContainer();
		if (!texUVTable->reserve(polyVertCount) || !mesh->reservePerTriangleTexCoordIndexes())
		{
			texUVTable->release();
			ccLog::Warning(QString("[FBX] Not enough memory to load mesh '%1' UV coordinates!").arg(fbxMesh->GetName()));
		}
		else
		{
			mesh->addChild(texUVTable);
			hasTexUV = true;
		}
	}

//.........这里部分代码省略.........
			else if (tokens.front() == "vt")
			{
				//create and reserve memory for tex. coords container if necessary
				if (!texCoords)
				{
					texCoords = new TextureCoordsContainer();
					texCoords->link();
				}
				if (texCoords->currentSize() == texCoords->capacity())
				{
					if (!texCoords->reserve(texCoords->capacity() + MAX_NUMBER_OF_ELEMENTS_PER_CHUNK))
					{
						objWarnings[NOT_ENOUGH_MEMORY] = true;
						error = true;
						break;
					}
				}

				//malformed line?
				if (tokens.size() < 2)
				{
					objWarnings[INVALID_LINE] = true;
					error = true;
					break;
				}

				float T[2] = { T[0] = tokens[1].toFloat(), 0 };

				if (tokens.size() > 2) //OBJ specification allows for only one value!!!
				{
					T[1] = tokens[2].toFloat();
				}

				texCoords->addElement(T);
				++texCoordsRead;
			}
			/*** new vertex normal ***/
			else if (tokens.front() == "vn") //--> in fact it can also be a facet normal!!!
			{
				//create and reserve memory for normals container if necessary
				if (!normals)
				{
					normals = new NormsIndexesTableType;
					normals->link();
				}
				if (normals->currentSize() == normals->capacity())
				{
					if (!normals->reserve(normals->capacity() + MAX_NUMBER_OF_ELEMENTS_PER_CHUNK))
					{
						objWarnings[NOT_ENOUGH_MEMORY] = true;
						error = true;
						break;
					}
				}

				//malformed line?
				if (tokens.size() < 4)
				{
					objWarnings[INVALID_LINE] = true;
					error = true;
					break;
				}

				CCVector3 N(static_cast<PointCoordinateType>(tokens[1].toDouble()),
							static_cast<PointCoordinateType>(tokens[2].toDouble()),
							static_cast<PointCoordinateType>(tokens[3].toDouble()));

//.........这里部分代码省略.........
				m_contourPolyline->addPointIndex(0, hullPtsCount);
				m_contourPolyline->setClosed(true);
				m_contourPolyline->setVisible(true);
				m_contourPolyline->setLocked(true);
				m_contourPolyline->setName(DEFAULT_CONTOUR_NAME);
				m_contourVertices->addChild(m_contourPolyline);
				m_contourVertices->setEnabled(true);
				m_contourVertices->setVisible(false);
			}
			else
			{
				delete m_contourPolyline;
				m_contourPolyline = nullptr;
				ccLog::Warning("[ccFacet::createInternalRepresentation] Not enough memory to create the contour polyline!");
			}
		}

		//we create the corresponding (2D) mesh
		std::vector<CCVector2> hullPointsVector;
		try
		{
			hullPointsVector.reserve(hullPoints.size());
			for (std::list<CCLib::PointProjectionTools::IndexedCCVector2*>::const_iterator it = hullPoints.begin(); it != hullPoints.end(); ++it)
			{
				hullPointsVector.push_back(**it);
			}
		}
		catch (...)
		{
			ccLog::Warning("[ccFacet::createInternalRepresentation] Not enough memory to create the contour mesh!");
		}

		//if we have computed a concave hull, we must remove triangles falling outside!
		bool removePointsOutsideHull = (m_maxEdgeLength > 0);

		if (!hullPointsVector.empty() && CCLib::Delaunay2dMesh::Available())
		{
			//compute the facet surface
			CCLib::Delaunay2dMesh dm;
			char errorStr[1024];
			if (dm.buildMesh(hullPointsVector, 0, errorStr))
			{
				if (removePointsOutsideHull)
					dm.removeOuterTriangles(hullPointsVector, hullPointsVector);
				unsigned triCount = dm.size();
				assert(triCount != 0);

				m_polygonMesh = new ccMesh(m_contourVertices);
				if (m_polygonMesh->reserve(triCount))
				{
					//import faces
					for (unsigned i = 0; i < triCount; ++i)
					{
						const CCLib::VerticesIndexes* tsi = dm.getTriangleVertIndexes(i);
						m_polygonMesh->addTriangle(tsi->i1, tsi->i2, tsi->i3);
					}
					m_polygonMesh->setVisible(true);
					m_polygonMesh->enableStippling(true);

					//unique normal for facets
					if (m_polygonMesh->reservePerTriangleNormalIndexes())
					{
						NormsIndexesTableType* normsTable = new NormsIndexesTableType();
						normsTable->reserve(1);
						CCVector3 N(m_planeEquation);
						normsTable->addElement(ccNormalVectors::GetNormIndex(N.u));
						m_polygonMesh->setTriNormsTable(normsTable);
						for (unsigned i = 0; i < triCount; ++i)
							m_polygonMesh->addTriangleNormalIndexes(0, 0, 0); //all triangles will have the same normal!
						m_polygonMesh->showNormals(true);
						m_polygonMesh->setLocked(true);
						m_polygonMesh->setName(DEFAULT_POLYGON_MESH_NAME);
						m_contourVertices->addChild(m_polygonMesh);
						m_contourVertices->setEnabled(true);
						m_contourVertices->setVisible(false);
					}
					else
					{
						ccLog::Warning("[ccFacet::createInternalRepresentation] Not enough memory to create the polygon mesh's normals!");
					}

					//update facet surface
					m_surface = CCLib::MeshSamplingTools::computeMeshArea(m_polygonMesh);
				}
				else
				{
					delete m_polygonMesh;
					m_polygonMesh = nullptr;
					ccLog::Warning("[ccFacet::createInternalRepresentation] Not enough memory to create the polygon mesh!");
				}
			}
			else
			{
				ccLog::Warning(QString("[ccFacet::createInternalRepresentation] Failed to create the polygon mesh (third party lib. said '%1'").arg(errorStr));
			}
		}
	}

	return true;
}

//.........这里部分代码省略.........
			}

			for (unsigned i=0; i<addedVertCount; ++i)
			{
				if (vertIndexes[i] < 0)
				{
					vertIndexes[i] = static_cast<int>(vertCount++);
					vertices->addPoint(P[i]);
				}
			}
		}

		//number of triangles to add
		unsigned addTriCount = (addedVertCount == 3 ? 1 : 2);

		//now add the corresponding face(s)
		if (!m_faces->reserve(m_faces->size() + addTriCount))
		{
			ccLog::Error("[DxfImporter] Not enough memory!");
			return;
		}
		m_faces->addTriangle(vertIndexes[0], vertIndexes[1], vertIndexes[2]);
		if (addedVertCount == 4)
			m_faces->addTriangle(vertIndexes[0], vertIndexes[2], vertIndexes[3]);

		//add per-triangle normals
		{
			//normals table
			NormsIndexesTableType* triNormsTable = m_faces->getTriNormsTable();
			bool firstTime = false;
			if (!triNormsTable)
			{
				triNormsTable = new NormsIndexesTableType(); 
				m_faces->setTriNormsTable(triNormsTable);
				m_faces->addChild(triNormsTable);
				firstTime = true;
			}

			//add 1 or 2 new entries
			unsigned triNormCount = triNormsTable->currentSize();
			if (!triNormsTable->reserve(triNormsTable->currentSize() + addTriCount))
			{
				ccLog::Error("[DxfImporter] Not enough memory!");
				return;
			}
			
			CCVector3 N = (P[1]-P[0]).cross(P[2]-P[0]);
			N.normalize();
			triNormsTable->addElement(ccNormalVectors::GetNormIndex(N.u));
			if (addTriCount == 2)
			{
				N = (P[2]-P[0]).cross(P[3]-P[0]);
				N.normalize();
				triNormsTable->addElement(ccNormalVectors::GetNormIndex(N.u));
			}

			//per-triangle normals indexes
			if (firstTime)
			{
				if (!m_faces->reservePerTriangleNormalIndexes())
				{
					ccLog::Error("[DxfImporter] Not enough memory!");
					return;
				}
				m_faces->showNormals(true);
			}
			int n1 = static_cast<int>(triNormCount);
			m_faces->addTriangleNormalIndexes(n1, n1, n1);
			if (addTriCount == 2)
			{
				int n2 = static_cast<int>(triNormCount+1);
				m_faces->addTriangleNormalIndexes(n2, n2, n2);
			}
		}

		//and now for the color
		if (faceCol)
		{
			//RGB field already instantiated?
			if (vertices->hasColors())
			{
				for (unsigned i=0; i<createdVertCount; ++i)
					vertices->addRGBColor(faceCol);
			}
			//otherwise, reserve memory and set all previous points to white by default
			else if (vertices->setRGBColor(ccColor::white))
			{
				//then replace the last color(s) by the current one
				for (unsigned i=0; i<createdVertCount; ++i)
					vertices->setPointColor(vertCount-1-i,faceCol);
				m_faces->showColors(true);
			}
		}
		else if (vertices->hasColors())
		{
			//add default color if none is defined!
			for (unsigned i=0; i<createdVertCount; ++i)
				vertices->addRGBColor(ccColor::white);
		}
	}