1db46c242f
Added AC-loader, WIP version. PLY loader is now able to load models from blender, test model added. Refactoring. Added FindInvalidData step. Added support for precompiled headers, the release builds in VC8 are configued to use PCH now. Added separate makefile for mingw, no -FPic warning anymore, -clear works now. git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@176 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
653 lines
18 KiB
C++
653 lines
18 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (ASSIMP)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development 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 Development 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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#include "AssimpPCH.h"
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#include "ObjFileParser.h"
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#include "ObjFileMtlImporter.h"
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#include "ObjTools.h"
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#include "ObjFileData.h"
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#include "fast_atof.h"
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#include "DefaultIOSystem.h"
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namespace Assimp
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{
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// -------------------------------------------------------------------
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const std::string ObjFileParser::DEFAULT_MATERIAL = "defaultmaterial";
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// -------------------------------------------------------------------
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// Constructor with loaded data and directories.
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ObjFileParser::ObjFileParser(std::vector<char> &Data,
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const std::string &strAbsPath,
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const std::string &strModelName) :
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m_strAbsPath(strAbsPath),
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m_DataIt(Data.begin()),
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m_DataItEnd(Data.end()),
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m_pModel(NULL),
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m_uiLine(0)
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{
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// Create the model instance to store all the data
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m_pModel = new ObjFile::Model();
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m_pModel->m_ModelName = strModelName;
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m_pModel->m_pDefaultMaterial = new ObjFile::Material();
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m_pModel->m_pDefaultMaterial->MaterialName.Set( DEFAULT_MATERIAL );
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m_pModel->m_MaterialLib.push_back( DEFAULT_MATERIAL );
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m_pModel->m_MaterialMap[ DEFAULT_MATERIAL ] = m_pModel->m_pDefaultMaterial;
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// Start parsing the file
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parseFile();
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}
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// -------------------------------------------------------------------
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ObjFileParser::~ObjFileParser()
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{
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delete m_pModel->m_pDefaultMaterial;
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m_pModel->m_pDefaultMaterial = NULL;
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delete m_pModel;
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m_pModel = NULL;
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}
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// -------------------------------------------------------------------
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ObjFile::Model *ObjFileParser::GetModel() const
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{
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return m_pModel;
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}
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// -------------------------------------------------------------------
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void ObjFileParser::parseFile()
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{
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if (m_DataIt == m_DataItEnd)
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return;
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while (m_DataIt != m_DataItEnd)
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{
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switch (*m_DataIt)
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{
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case 'v': // Parse a vertex texture coordinate
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{
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++m_DataIt;
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if (*m_DataIt == ' ')
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{
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// Read in vertex definition
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getVector3(m_pModel->m_Vertices);
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}
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else if (*m_DataIt == 't')
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{
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// Read in texture coordinate (2D)
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++m_DataIt;
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getVector2(m_pModel->m_TextureCoord);
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}
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else if (*m_DataIt == 'n')
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{
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// Read in normal vector definition
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++m_DataIt;
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getVector3(m_pModel->m_Normals);
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}
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}
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break;
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case 'f': // Parse a face
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{
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getFace();
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}
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break;
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case '#': // Parse a comment
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{
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getComment();
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}
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break;
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case 'u': // Parse a material desc. setter
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{
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getMaterialDesc();
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}
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break;
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case 'm': // Parse a material library
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{
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getMaterialLib();
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}
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break;
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case 'g': // Parse group name
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{
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getGroupName();
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}
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break;
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case 's': // Parse group number
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{
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getGroupNumber();
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}
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break;
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case 'o': // Parse object name
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{
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getObjectName();
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}
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break;
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default:
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{
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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break;
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}
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}
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}
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// -------------------------------------------------------------------
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// Copy the next word in a temporary buffer
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void ObjFileParser::copyNextWord(char *pBuffer, size_t length)
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{
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size_t index = 0;
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m_DataIt = getNextWord<DataArrayIt>(m_DataIt, m_DataItEnd);
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while (!isSpace(*m_DataIt) && m_DataIt != m_DataItEnd)
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{
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pBuffer[index] = *m_DataIt;
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index++;
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if (index == length-1)
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break;
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++m_DataIt;
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}
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pBuffer[index] = '\0';
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}
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// -------------------------------------------------------------------
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// Copy the next line into a temporary buffer
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void ObjFileParser::copyNextLine(char *pBuffer, size_t length)
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{
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size_t index = 0;
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while (m_DataIt != m_DataItEnd)
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{
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if (*m_DataIt == '\n' || *m_DataIt == '\r')
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break;
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assert (index+1 <= length);
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pBuffer[ index ] = *m_DataIt;
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++index;
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++m_DataIt;
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}
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pBuffer[ index ] = '\0';
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}
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// -------------------------------------------------------------------
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// Get values for a new 3D vector instance
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void ObjFileParser::getVector3(std::vector<aiVector3D*> &point3d_array)
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{
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float x, y, z;
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copyNextWord(m_buffer, BUFFERSIZE);
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x = (float) fast_atof(m_buffer);
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copyNextWord(m_buffer, BUFFERSIZE);
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y = (float) fast_atof(m_buffer);
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copyNextWord(m_buffer, BUFFERSIZE);
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z = (float) fast_atof(m_buffer);
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point3d_array.push_back(new aiVector3D(x,y,z));
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//skipLine();
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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// Get values for a new 2D vector instance
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void ObjFileParser::getVector2( std::vector<aiVector2D*> &point2d_array )
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{
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float x, y;
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copyNextWord(m_buffer, BUFFERSIZE);
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x = (float) fast_atof(m_buffer);
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copyNextWord(m_buffer, BUFFERSIZE);
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y = (float) fast_atof(m_buffer);
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point2d_array.push_back(new aiVector2D(x, y));
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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// Get values for a new face instance
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void ObjFileParser::getFace()
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{
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copyNextLine(m_buffer, BUFFERSIZE);
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if (m_DataIt == m_DataItEnd)
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return;
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char *pPtr = m_buffer;
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char *pEnd = &pPtr[BUFFERSIZE];
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pPtr = getNextToken<char*>(pPtr, pEnd);
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if (pPtr == '\0')
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return;
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std::vector<unsigned int> *pIndices = new std::vector<unsigned int>;
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std::vector<unsigned int> *pTexID = new std::vector<unsigned int>;
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std::vector<unsigned int> *pNormalID = new std::vector<unsigned int>;
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bool hasNormal = false;
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bool vt = (!m_pModel->m_TextureCoord.empty());
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bool vn = (!m_pModel->m_Normals.empty());
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int iStep = 0, iPos = 0;
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while (pPtr != pEnd)
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{
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iStep = 1;
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if (*pPtr == '\0')
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break;
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if (*pPtr=='\r')
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break;
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if (*pPtr=='/' )
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{
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if (iPos == 0)
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{
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//if there are no texturecoordinates in the obj file but normals
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if (!vt && vn) {
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iPos = 1;
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iStep++;
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}
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}
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iPos++;
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}
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else if (isSpace(*pPtr))
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{
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iPos = 0;
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}
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else
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{
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//OBJ USES 1 Base ARRAYS!!!!
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const int iVal = atoi( pPtr );
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int tmp = iVal;
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while ((tmp = tmp / 10)!=0)
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++iStep;
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if ( 0 != iVal )
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{
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// Store parsed index
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if ( 0 == iPos )
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{
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pIndices->push_back( iVal-1 );
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}
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else if ( 1 == iPos )
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{
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pTexID->push_back( iVal-1 );
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}
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else if ( 2 == iPos )
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{
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pNormalID->push_back( iVal-1 );
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hasNormal = true;
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}
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else
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{
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reportErrorTokenInFace();
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}
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}
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}
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for ( int i=0; i<iStep; i++ )
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++pPtr;
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}
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ObjFile::Face *face = new ObjFile::Face(pIndices, pNormalID, pTexID);
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// Set active material, if one set
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if (NULL != m_pModel->m_pCurrentMaterial)
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face->m_pMaterial = m_pModel->m_pCurrentMaterial;
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else
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face->m_pMaterial = m_pModel->m_pDefaultMaterial;
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// Create a default object, if nothing there
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if ( NULL == m_pModel->m_pCurrent )
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createObject("defaultobject");
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// Store the new instance
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m_pModel->m_pCurrent->m_Faces.push_back(face);
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// Assign face to mesh
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if ( NULL == m_pModel->m_pCurrentMesh )
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{
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m_pModel->m_pCurrentMesh = new ObjFile::Mesh();
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m_pModel->m_Meshes.push_back( m_pModel->m_pCurrentMesh );
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}
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// Store the face
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m_pModel->m_pCurrentMesh->m_Faces.push_back( face );
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m_pModel->m_pCurrentMesh->m_uiNumIndices += (unsigned int)face->m_pVertices->size();
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m_pModel->m_pCurrentMesh->m_uiUVCoordinates[ 0 ] += (unsigned int)face->m_pTexturCoords[0].size();
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if(!m_pModel->m_pCurrentMesh->m_hasNormals && hasNormal) {
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m_pModel->m_pCurrentMesh->m_hasNormals = true;
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}
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// Skip the rest of the line
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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// Get values for a new material description
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void ObjFileParser::getMaterialDesc()
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{
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// Get next data for material data
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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if (m_DataIt == m_DataItEnd)
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return;
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char *pStart = &(*m_DataIt);
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while ( !isSpace(*m_DataIt) && m_DataIt != m_DataItEnd )
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++m_DataIt;
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// Get name
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std::string strName(pStart, &(*m_DataIt));
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if ( strName.empty())
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return;
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// Search for material
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std::map<std::string, ObjFile::Material*>::iterator it = m_pModel->m_MaterialMap.find( strName );
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if ( it == m_pModel->m_MaterialMap.end() )
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{
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// Not found, use default material
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m_pModel->m_pCurrentMaterial = m_pModel->m_pDefaultMaterial;
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m_pModel->m_pCurrentMesh = new ObjFile::Mesh();
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m_pModel->m_Meshes.push_back( m_pModel->m_pCurrentMesh );
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m_pModel->m_pCurrentMesh->m_uiMaterialIndex = getMaterialIndex( DEFAULT_MATERIAL );
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}
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else
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{
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// Found, using detected material
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m_pModel->m_pCurrentMaterial = (*it).second;
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// Create a new mesh for a new material
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m_pModel->m_pCurrentMesh = new ObjFile::Mesh();
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m_pModel->m_Meshes.push_back( m_pModel->m_pCurrentMesh );
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m_pModel->m_pCurrentMesh->m_uiMaterialIndex = getMaterialIndex( strName );
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}
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// Skip rest of line
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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// Get a comment, values will be skipped
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void ObjFileParser::getComment()
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{
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while (true)
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{
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if ('\n' == (*m_DataIt) || m_DataIt == m_DataItEnd)
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{
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++m_DataIt;
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break;
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}
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else
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{
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++m_DataIt;
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}
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}
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}
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// -------------------------------------------------------------------
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// Get material library from file.
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void ObjFileParser::getMaterialLib()
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{
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// Translate tuple
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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if (m_DataIt == m_DataItEnd)
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return;
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char *pStart = &(*m_DataIt);
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while (!isNewLine(*m_DataIt))
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m_DataIt++;
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// Check for existence
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DefaultIOSystem IOSystem;
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std::string strMatName(pStart, &(*m_DataIt));
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std::string absName = m_strAbsPath + IOSystem.getOsSeparator() + strMatName;
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if ( !IOSystem.Exists(absName) )
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{
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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return;
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}
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// Extract the extention
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std::string strExt("");
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extractExtension( strMatName, strExt );
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static const std::string mat = "mtl";
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// Load the material library
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DefaultIOSystem FileSystem;
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IOStream *pFile = FileSystem.Open(absName);
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if (0L != pFile)
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{
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// Import material library data from file
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size_t size = pFile->FileSize();
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std::vector<char> buffer;
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buffer.resize( size );
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pFile->Read( &buffer[ 0 ], sizeof( char ), size );
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FileSystem.Close( pFile );
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// Importing the material library
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ObjFileMtlImporter mtlImporter( buffer, absName, m_pModel );
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}
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// Skip rest of line
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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// Set a new material definition as the current material.
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void ObjFileParser::getNewMaterial()
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{
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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m_DataIt = getNextWord<DataArrayIt>(m_DataIt, m_DataItEnd);
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if ( m_DataIt == m_DataItEnd )
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return;
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char *pStart = &(*m_DataIt);
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std::string strMat(pStart, *m_DataIt);
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while (isSpace(*m_DataIt))
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m_DataIt++;
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std::map<std::string, ObjFile::Material*>::iterator it = m_pModel->m_MaterialMap.find( strMat );
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if (it == m_pModel->m_MaterialMap.end())
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{
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// Show a warning, if material was not found
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std::string strWarn ("Unsupported material requested: ");
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strWarn += strMat;
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std::cerr << "Warning : " << strWarn << std::endl;
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m_pModel->m_pCurrentMaterial = m_pModel->m_pDefaultMaterial;
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}
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else
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{
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// Set new material
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m_pModel->m_pCurrentMaterial = (*it).second;
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m_pModel->m_pCurrentMesh->m_uiMaterialIndex = getMaterialIndex( strMat );
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}
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m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
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}
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// -------------------------------------------------------------------
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int ObjFileParser::getMaterialIndex( const std::string &strMaterialName )
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{
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int mat_index = -1;
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if ( strMaterialName.empty() )
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return mat_index;
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for (size_t index = 0; index < m_pModel->m_MaterialLib.size(); ++index)
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{
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if ( strMaterialName == m_pModel->m_MaterialLib[ index ])
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{
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mat_index = (int)index;
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break;
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}
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}
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return mat_index;
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}
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// -------------------------------------------------------------------
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// Getter for a group name.
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void ObjFileParser::getGroupName()
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{
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// Get next word from data buffer
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m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
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m_DataIt = getNextWord<DataArrayIt>(m_DataIt, m_DataItEnd);
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if ( m_DataIt == m_DataItEnd )
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return;
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// Store groupname in group library
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char *pStart = &(*m_DataIt);
|
||
while (!isSpace(*m_DataIt))
|
||
m_DataIt++;
|
||
std::string strGroupName(pStart, &(*m_DataIt));
|
||
|
||
// Change active group, if necessary
|
||
if (m_pModel->m_strActiveGroup != strGroupName)
|
||
{
|
||
// Search for already existing entry
|
||
ObjFile::Model::ConstGroupMapIt it = m_pModel->m_Groups.find(&strGroupName);
|
||
|
||
// New group name, creating a new entry
|
||
//ObjFile::Object *pObject = m_pModel->m_pCurrent;
|
||
if (it == m_pModel->m_Groups.end())
|
||
{
|
||
std::vector<unsigned int> *pFaceIDArray = new std::vector<unsigned int>;
|
||
m_pModel->m_Groups[ &strGroupName ] = pFaceIDArray;
|
||
m_pModel->m_pGroupFaceIDs = (pFaceIDArray);
|
||
}
|
||
else
|
||
{
|
||
m_pModel->m_pGroupFaceIDs = (*it).second;
|
||
}
|
||
m_pModel->m_strActiveGroup = strGroupName;
|
||
}
|
||
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
|
||
}
|
||
|
||
// -------------------------------------------------------------------
|
||
// Not supported
|
||
void ObjFileParser::getGroupNumber()
|
||
{
|
||
// Not used
|
||
|
||
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
|
||
}
|
||
|
||
// -------------------------------------------------------------------
|
||
// Stores values for a new object instance, name will be used to
|
||
// identify it.
|
||
void ObjFileParser::getObjectName()
|
||
{
|
||
m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);
|
||
if (m_DataIt == m_DataItEnd)
|
||
return;
|
||
char *pStart = &(*m_DataIt);
|
||
while (!isSpace(*m_DataIt))
|
||
m_DataIt++;
|
||
|
||
std::string strObjectName(pStart, &(*m_DataIt));
|
||
if (!strObjectName.empty())
|
||
{
|
||
// Reset current object
|
||
m_pModel->m_pCurrent = NULL;
|
||
|
||
// Search for actual object
|
||
for (std::vector<ObjFile::Object*>::const_iterator it = m_pModel->m_Objects.begin();
|
||
it != m_pModel->m_Objects.end();
|
||
++it)
|
||
{
|
||
if ((*it)->m_strObjName == strObjectName)
|
||
{
|
||
m_pModel->m_pCurrent = *it;
|
||
break;
|
||
}
|
||
}
|
||
|
||
// Allocate a new object, if current one wasn<73>t found before
|
||
if (m_pModel->m_pCurrent == NULL)
|
||
{
|
||
createObject(strObjectName);
|
||
/*m_pModel->m_pCurrent = new ObjFile::Object();
|
||
m_pModel->m_pCurrent->m_strObjName = strObjectName;
|
||
m_pModel->m_Objects.push_back(m_pModel->m_pCurrent);*/
|
||
}
|
||
}
|
||
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
|
||
}
|
||
// -------------------------------------------------------------------
|
||
// Creates a new object instance
|
||
void ObjFileParser::createObject(const std::string &strObjectName)
|
||
{
|
||
ai_assert (NULL != m_pModel);
|
||
ai_assert (!strObjectName.empty());
|
||
|
||
m_pModel->m_pCurrent = new ObjFile::Object();
|
||
m_pModel->m_pCurrent->m_strObjName = strObjectName;
|
||
m_pModel->m_Objects.push_back(m_pModel->m_pCurrent);
|
||
}
|
||
|
||
// -------------------------------------------------------------------
|
||
// Shows an error in parsing process.
|
||
void ObjFileParser::reportErrorTokenInFace()
|
||
{
|
||
std::string strErr("");
|
||
|
||
m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
|
||
std::cerr << "Not supported token in face desc. detected : " << strErr << std::endl;
|
||
}
|
||
|
||
// -------------------------------------------------------------------
|
||
// Extracts the extention from a filename
|
||
void ObjFileParser::extractExtension(const std::string &strFile,
|
||
std::string &strExt)
|
||
{
|
||
strExt = "";
|
||
if (strFile.empty())
|
||
return;
|
||
|
||
// Search for extention delimiter
|
||
std::string::size_type pos = strFile.find_last_of(".");
|
||
if ( pos == std::string::npos )
|
||
return;
|
||
|
||
strExt = strFile.substr(pos, strFile.size() - pos);
|
||
}
|
||
// -------------------------------------------------------------------
|
||
|
||
} // Namespace Assimp
|