358 lines
11 KiB
C++
358 lines
11 KiB
C++
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/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2020, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/// \file AMFImporter_Geometry.cpp
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/// \brief Parsing data from geometry nodes.
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/// \date 2016
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/// \author smal.root@gmail.com
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#ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
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#include "AMFImporter.hpp"
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#include "AMFImporter_Macro.hpp"
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namespace Assimp
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{
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// <mesh>
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// </mesh>
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// A 3D mesh hull.
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// Multi elements - Yes.
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// Parent element - <object>.
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void AMFImporter::ParseNode_Mesh()
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{
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CAMFImporter_NodeElement* ne;
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// create new mesh object.
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ne = new CAMFImporter_NodeElement_Mesh(mNodeElement_Cur);
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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bool vert_read = false;
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("mesh");
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if(XML_CheckNode_NameEqual("vertices"))
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{
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// Check if data already defined.
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if(vert_read) Throw_MoreThanOnceDefined("vertices", "Only one vertices set can be defined for <mesh>.");
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// read data and set flag about it
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ParseNode_Vertices();
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vert_read = true;
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continue;
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}
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if(XML_CheckNode_NameEqual("volume")) { ParseNode_Volume(); continue; }
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MACRO_NODECHECK_LOOPEND("mesh");
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ParseHelper_Node_Exit();
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <vertices>
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// </vertices>
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// The list of vertices to be used in defining triangles.
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// Multi elements - No.
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// Parent element - <mesh>.
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void AMFImporter::ParseNode_Vertices()
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{
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CAMFImporter_NodeElement* ne;
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// create new mesh object.
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ne = new CAMFImporter_NodeElement_Vertices(mNodeElement_Cur);
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("vertices");
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if(XML_CheckNode_NameEqual("vertex")) { ParseNode_Vertex(); continue; }
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MACRO_NODECHECK_LOOPEND("vertices");
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ParseHelper_Node_Exit();
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <vertex>
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// </vertex>
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// A vertex to be referenced in triangles.
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// Multi elements - Yes.
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// Parent element - <vertices>.
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void AMFImporter::ParseNode_Vertex()
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{
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CAMFImporter_NodeElement* ne;
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// create new mesh object.
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ne = new CAMFImporter_NodeElement_Vertex(mNodeElement_Cur);
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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bool col_read = false;
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bool coord_read = false;
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("vertex");
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if(XML_CheckNode_NameEqual("color"))
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{
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// Check if data already defined.
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if(col_read) Throw_MoreThanOnceDefined("color", "Only one color can be defined for <vertex>.");
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// read data and set flag about it
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ParseNode_Color();
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col_read = true;
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continue;
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}
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if(XML_CheckNode_NameEqual("coordinates"))
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{
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// Check if data already defined.
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if(coord_read) Throw_MoreThanOnceDefined("coordinates", "Only one coordinates set can be defined for <vertex>.");
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// read data and set flag about it
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ParseNode_Coordinates();
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coord_read = true;
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continue;
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}
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if(XML_CheckNode_NameEqual("metadata")) { ParseNode_Metadata(); continue; }
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MACRO_NODECHECK_LOOPEND("vertex");
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ParseHelper_Node_Exit();
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <coordinates>
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// </coordinates>
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// Specifies the 3D location of this vertex.
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// Multi elements - No.
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// Parent element - <vertex>.
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//
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// Children elements:
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// <x>, <y>, <z>
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// Multi elements - No.
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// X, Y, or Z coordinate, respectively, of a vertex position in space.
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void AMFImporter::ParseNode_Coordinates()
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{
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CAMFImporter_NodeElement* ne;
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// create new color object.
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ne = new CAMFImporter_NodeElement_Coordinates(mNodeElement_Cur);
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CAMFImporter_NodeElement_Coordinates& als = *((CAMFImporter_NodeElement_Coordinates*)ne);// alias for convenience
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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bool read_flag[3] = { false, false, false };
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("coordinates");
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MACRO_NODECHECK_READCOMP_F("x", read_flag[0], als.Coordinate.x);
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MACRO_NODECHECK_READCOMP_F("y", read_flag[1], als.Coordinate.y);
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MACRO_NODECHECK_READCOMP_F("z", read_flag[2], als.Coordinate.z);
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MACRO_NODECHECK_LOOPEND("coordinates");
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ParseHelper_Node_Exit();
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// check that all components was defined
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if((read_flag[0] && read_flag[1] && read_flag[2]) == 0) throw DeadlyImportError("Not all coordinate's components are defined.");
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <volume
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// materialid="" - Which material to use.
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// type="" - What this volume describes can be “region” or “support”. If none specified, “object” is assumed. If support, then the geometric
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// requirements 1-8 listed in section 5 do not need to be maintained.
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// >
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// </volume>
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// Defines a volume from the established vertex list.
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// Multi elements - Yes.
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// Parent element - <mesh>.
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void AMFImporter::ParseNode_Volume()
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{
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std::string materialid;
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std::string type;
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CAMFImporter_NodeElement* ne;
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// Read attributes for node <color>.
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MACRO_ATTRREAD_LOOPBEG;
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MACRO_ATTRREAD_CHECK_RET("materialid", materialid, mReader->getAttributeValue);
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MACRO_ATTRREAD_CHECK_RET("type", type, mReader->getAttributeValue);
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MACRO_ATTRREAD_LOOPEND;
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// create new object.
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ne = new CAMFImporter_NodeElement_Volume(mNodeElement_Cur);
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// and assign read data
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((CAMFImporter_NodeElement_Volume*)ne)->MaterialID = materialid;
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((CAMFImporter_NodeElement_Volume*)ne)->Type = type;
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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bool col_read = false;
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("volume");
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if(XML_CheckNode_NameEqual("color"))
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{
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// Check if data already defined.
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if(col_read) Throw_MoreThanOnceDefined("color", "Only one color can be defined for <volume>.");
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// read data and set flag about it
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ParseNode_Color();
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col_read = true;
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continue;
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}
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if(XML_CheckNode_NameEqual("triangle")) { ParseNode_Triangle(); continue; }
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if(XML_CheckNode_NameEqual("metadata")) { ParseNode_Metadata(); continue; }
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MACRO_NODECHECK_LOOPEND("volume");
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ParseHelper_Node_Exit();
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <triangle>
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// </triangle>
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// Defines a 3D triangle from three vertices, according to the right-hand rule (counter-clockwise when looking from the outside).
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// Multi elements - Yes.
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// Parent element - <volume>.
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//
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// Children elements:
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// <v1>, <v2>, <v3>
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// Multi elements - No.
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// Index of the desired vertices in a triangle or edge.
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void AMFImporter::ParseNode_Triangle()
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{
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CAMFImporter_NodeElement* ne;
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// create new color object.
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ne = new CAMFImporter_NodeElement_Triangle(mNodeElement_Cur);
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CAMFImporter_NodeElement_Triangle& als = *((CAMFImporter_NodeElement_Triangle*)ne);// alias for convenience
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// Check for child nodes
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if(!mReader->isEmptyElement())
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{
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bool col_read = false, tex_read = false;
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bool read_flag[3] = { false, false, false };
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ParseHelper_Node_Enter(ne);
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MACRO_NODECHECK_LOOPBEGIN("triangle");
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if(XML_CheckNode_NameEqual("color"))
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{
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// Check if data already defined.
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if(col_read) Throw_MoreThanOnceDefined("color", "Only one color can be defined for <triangle>.");
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// read data and set flag about it
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ParseNode_Color();
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col_read = true;
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continue;
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}
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if(XML_CheckNode_NameEqual("texmap"))// new name of node: "texmap".
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{
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// Check if data already defined.
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if(tex_read) Throw_MoreThanOnceDefined("texmap", "Only one texture coordinate can be defined for <triangle>.");
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// read data and set flag about it
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ParseNode_TexMap();
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tex_read = true;
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continue;
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}
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else if(XML_CheckNode_NameEqual("map"))// old name of node: "map".
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{
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// Check if data already defined.
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if(tex_read) Throw_MoreThanOnceDefined("map", "Only one texture coordinate can be defined for <triangle>.");
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// read data and set flag about it
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ParseNode_TexMap(true);
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tex_read = true;
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continue;
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}
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MACRO_NODECHECK_READCOMP_U32("v1", read_flag[0], als.V[0]);
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MACRO_NODECHECK_READCOMP_U32("v2", read_flag[1], als.V[1]);
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MACRO_NODECHECK_READCOMP_U32("v3", read_flag[2], als.V[2]);
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MACRO_NODECHECK_LOOPEND("triangle");
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ParseHelper_Node_Exit();
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// check that all components was defined
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if((read_flag[0] && read_flag[1] && read_flag[2]) == 0) throw DeadlyImportError("Not all vertices of the triangle are defined.");
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}// if(!mReader->isEmptyElement())
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else
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{
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}// if(!mReader->isEmptyElement()) else
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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}// namespace Assimp
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#endif // !ASSIMP_BUILD_NO_AMF_IMPORTER
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