Torque3D-clone/Engine/lib/assimp/code/Obj/ObjFileImporter.cpp

/*
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Open Asset Import Library (assimp)
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All rights reserved.

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  copyright notice, this list of conditions and the
  following disclaimer.

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  derived from this software without specific prior
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*/

#ifndef ASSIMP_BUILD_NO_OBJ_IMPORTER

#include "ObjFileImporter.h"
#include "ObjFileParser.h"
#include "ObjFileData.h"
#include <assimp/IOStreamBuffer.h>
#include <memory>
#include <assimp/DefaultIOSystem.h>
#include <assimp/Importer.hpp>
#include <assimp/scene.h>
#include <assimp/ai_assert.h>
#include <assimp/DefaultLogger.hpp>
#include <assimp/importerdesc.h>

static const aiImporterDesc desc = {
    "Wavefront Object Importer",
    "",
    "",
    "surfaces not supported",
    aiImporterFlags_SupportTextFlavour,
    0,
    0,
    0,
    0,
    "obj"
};

static const unsigned int ObjMinSize = 16;

namespace Assimp {

using namespace std;

// ------------------------------------------------------------------------------------------------
//  Default constructor
ObjFileImporter::ObjFileImporter()
: m_Buffer()
, m_pRootObject( nullptr )
, m_strAbsPath( std::string(1, DefaultIOSystem().getOsSeparator()) ) {}

// ------------------------------------------------------------------------------------------------
//  Destructor.
ObjFileImporter::~ObjFileImporter() {
    delete m_pRootObject;
    m_pRootObject = nullptr;
}

// ------------------------------------------------------------------------------------------------
//  Returns true, if file is an obj file.
bool ObjFileImporter::CanRead( const std::string& pFile, IOSystem*  pIOHandler , bool checkSig ) const {
    if(!checkSig)  {
        //Check File Extension
        return SimpleExtensionCheck(pFile,"obj");
    } else {
        // Check file Header
        static const char *pTokens[] = { "mtllib", "usemtl", "v ", "vt ", "vn ", "o ", "g ", "s ", "f " };
        return BaseImporter::SearchFileHeaderForToken(pIOHandler, pFile, pTokens, 9, 200, false, true );
    }
}

// ------------------------------------------------------------------------------------------------
const aiImporterDesc* ObjFileImporter::GetInfo() const {
    return &desc;
}

// ------------------------------------------------------------------------------------------------
//  Obj-file import implementation
void ObjFileImporter::InternReadFile( const std::string &file, aiScene* pScene, IOSystem* pIOHandler) {
    // Read file into memory
    static const std::string mode = "rb";
    std::unique_ptr<IOStream> fileStream( pIOHandler->Open( file, mode));
    if( !fileStream.get() ) {
        throw DeadlyImportError( "Failed to open file " + file + "." );
    }

    // Get the file-size and validate it, throwing an exception when fails
    size_t fileSize = fileStream->FileSize();
    if( fileSize < ObjMinSize ) {
        throw DeadlyImportError( "OBJ-file is too small.");
    }

    IOStreamBuffer<char> streamedBuffer;
    streamedBuffer.open( fileStream.get() );

    // Allocate buffer and read file into it
    //TextFileToBuffer( fileStream.get(),m_Buffer);

    // Get the model name
    std::string  modelName, folderName;
    std::string::size_type pos = file.find_last_of( "\\/" );
    if ( pos != std::string::npos ) {
        modelName = file.substr(pos+1, file.size() - pos - 1);
        folderName = file.substr( 0, pos );
        if ( !folderName.empty() ) {
            pIOHandler->PushDirectory( folderName );
        }
    } else {
        modelName = file;
    }

    // parse the file into a temporary representation
    ObjFileParser parser( streamedBuffer, modelName, pIOHandler, m_progress, file);

    // And create the proper return structures out of it
    CreateDataFromImport(parser.GetModel(), pScene);

    streamedBuffer.close();

    // Clean up allocated storage for the next import
    m_Buffer.clear();

    // Pop directory stack
    if ( pIOHandler->StackSize() > 0 ) {
        pIOHandler->PopDirectory();
    }
}

// ------------------------------------------------------------------------------------------------
//  Create the data from parsed obj-file
void ObjFileImporter::CreateDataFromImport(const ObjFile::Model* pModel, aiScene* pScene) {
    if( 0L == pModel ) {
        return;
    }

    // Create the root node of the scene
    pScene->mRootNode = new aiNode;
    if ( !pModel->m_ModelName.empty() ) {
        // Set the name of the scene
        pScene->mRootNode->mName.Set(pModel->m_ModelName);
    } else {
        // This is a fatal error, so break down the application
        ai_assert(false);
    }

    if (!pModel->m_Objects.empty()) {

        unsigned int meshCount = 0;
        unsigned int childCount = 0;

        for (auto object : pModel->m_Objects) {
            if(object) {
                ++childCount;
                meshCount += (unsigned int)object->m_Meshes.size();
            }
        }

        // Allocate space for the child nodes on the root node
        pScene->mRootNode->mChildren = new aiNode*[ childCount ];

        // Create nodes for the whole scene
        std::vector<aiMesh*> MeshArray;
        MeshArray.reserve(meshCount);
        for (size_t index = 0; index < pModel->m_Objects.size(); ++index) {
            createNodes(pModel, pModel->m_Objects[index], pScene->mRootNode, pScene, MeshArray);
        }

        ai_assert(pScene->mRootNode->mNumChildren == childCount);

        // Create mesh pointer buffer for this scene
        if (pScene->mNumMeshes > 0) {
            pScene->mMeshes = new aiMesh*[MeshArray.size()];
            for (size_t index = 0; index < MeshArray.size(); ++index) {
                pScene->mMeshes[index] = MeshArray[index];
            }
        }

        // Create all materials
        createMaterials(pModel, pScene);
    }else {
		if (pModel->m_Vertices.empty()){
			return;
		}

		std::unique_ptr<aiMesh> mesh( new aiMesh );
        mesh->mPrimitiveTypes = aiPrimitiveType_POINT;
        unsigned int n = (unsigned int)pModel->m_Vertices.size();
        mesh->mNumVertices = n;

        mesh->mVertices = new aiVector3D[n];
        memcpy(mesh->mVertices, pModel->m_Vertices.data(), n*sizeof(aiVector3D) );

        if ( !pModel->m_Normals.empty() ) {
            mesh->mNormals = new aiVector3D[n];
            if (pModel->m_Normals.size() < n) {
                throw DeadlyImportError("OBJ: vertex normal index out of range");
            }
            memcpy(mesh->mNormals, pModel->m_Normals.data(), n*sizeof(aiVector3D));
        }

        if ( !pModel->m_VertexColors.empty() ){
            mesh->mColors[0] = new aiColor4D[mesh->mNumVertices];
            for (unsigned int i = 0; i < n; ++i) {
                if (i < pModel->m_VertexColors.size() ) {
                    const aiVector3D& color = pModel->m_VertexColors[i];
                    mesh->mColors[0][i] = aiColor4D(color.x, color.y, color.z, 1.0);
                }else {
                    throw DeadlyImportError("OBJ: vertex color index out of range");
                }
            }
        }

        pScene->mRootNode->mNumMeshes = 1;
        pScene->mRootNode->mMeshes = new unsigned int[1];
        pScene->mRootNode->mMeshes[0] = 0;
        pScene->mMeshes = new aiMesh*[1];
        pScene->mNumMeshes = 1;
        pScene->mMeshes[0] = mesh.release();
    }
}

// ------------------------------------------------------------------------------------------------
//  Creates all nodes of the model
aiNode *ObjFileImporter::createNodes(const ObjFile::Model* pModel, const ObjFile::Object* pObject,
                                     aiNode *pParent, aiScene* pScene,
                                     std::vector<aiMesh*> &MeshArray )
{
    ai_assert( NULL != pModel );
    if( NULL == pObject ) {
        return NULL;
    }

    // Store older mesh size to be able to computes mesh offsets for new mesh instances
    const size_t oldMeshSize = MeshArray.size();
    aiNode *pNode = new aiNode;

    pNode->mName = pObject->m_strObjName;

    // If we have a parent node, store it
    ai_assert( NULL != pParent );
    appendChildToParentNode( pParent, pNode );

    for ( size_t i=0; i< pObject->m_Meshes.size(); ++i ) {
        unsigned int meshId = pObject->m_Meshes[ i ];
        aiMesh *pMesh = createTopology( pModel, pObject, meshId );
        if( pMesh ) {
            if (pMesh->mNumFaces > 0) {
                MeshArray.push_back( pMesh );
            } else {
                delete pMesh;
            }
        }
    }

    // Create all nodes from the sub-objects stored in the current object
    if ( !pObject->m_SubObjects.empty() ) {
        size_t numChilds = pObject->m_SubObjects.size();
        pNode->mNumChildren = static_cast<unsigned int>( numChilds );
        pNode->mChildren = new aiNode*[ numChilds ];
        pNode->mNumMeshes = 1;
        pNode->mMeshes = new unsigned int[ 1 ];
    }

    // Set mesh instances into scene- and node-instances
    const size_t meshSizeDiff = MeshArray.size()- oldMeshSize;
    if ( meshSizeDiff > 0 ) {
        pNode->mMeshes = new unsigned int[ meshSizeDiff ];
        pNode->mNumMeshes = static_cast<unsigned int>( meshSizeDiff );
        size_t index = 0;
        for (size_t i = oldMeshSize; i < MeshArray.size(); ++i ) {
            pNode->mMeshes[ index ] = pScene->mNumMeshes;
            pScene->mNumMeshes++;
            ++index;
        }
    }

    return pNode;
}

// ------------------------------------------------------------------------------------------------
//  Create topology data
aiMesh *ObjFileImporter::createTopology( const ObjFile::Model* pModel, const ObjFile::Object* pData, unsigned int meshIndex ) {
    // Checking preconditions
    ai_assert( NULL != pModel );

    if( NULL == pData ) {
        return NULL;
    }

    // Create faces
    ObjFile::Mesh *pObjMesh = pModel->m_Meshes[ meshIndex ];
    if( !pObjMesh ) {
        return NULL;
    }

    if( pObjMesh->m_Faces.empty() ) {
        return NULL;
    }

    std::unique_ptr<aiMesh> pMesh(new aiMesh);
    if( !pObjMesh->m_name.empty() ) {
        pMesh->mName.Set( pObjMesh->m_name );
    }

    for (size_t index = 0; index < pObjMesh->m_Faces.size(); index++)
    {
        ObjFile::Face *const inp = pObjMesh->m_Faces[ index ];
        ai_assert( NULL != inp  );

        if (inp->m_PrimitiveType == aiPrimitiveType_LINE) {
            pMesh->mNumFaces += static_cast<unsigned int>(inp->m_vertices.size() - 1);
            pMesh->mPrimitiveTypes |= aiPrimitiveType_LINE;
        } else if (inp->m_PrimitiveType == aiPrimitiveType_POINT) {
            pMesh->mNumFaces += static_cast<unsigned int>(inp->m_vertices.size());
            pMesh->mPrimitiveTypes |= aiPrimitiveType_POINT;
        } else {
            ++pMesh->mNumFaces;
            if (inp->m_vertices.size() > 3) {
                pMesh->mPrimitiveTypes |= aiPrimitiveType_POLYGON;
            } else {
                pMesh->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE;
            }
        }
    }

    unsigned int uiIdxCount( 0u );
    if ( pMesh->mNumFaces > 0 ) {
        pMesh->mFaces = new aiFace[ pMesh->mNumFaces ];
        if ( pObjMesh->m_uiMaterialIndex != ObjFile::Mesh::NoMaterial ) {
            pMesh->mMaterialIndex = pObjMesh->m_uiMaterialIndex;
        }

        unsigned int outIndex( 0 );

        // Copy all data from all stored meshes
        for (auto& face : pObjMesh->m_Faces) {
            ObjFile::Face* const inp = face;
            if (inp->m_PrimitiveType == aiPrimitiveType_LINE) {
                for(size_t i = 0; i < inp->m_vertices.size() - 1; ++i) {
                    aiFace& f = pMesh->mFaces[ outIndex++ ];
                    uiIdxCount += f.mNumIndices = 2;
                    f.mIndices = new unsigned int[2];
                }
                continue;
            }
            else if (inp->m_PrimitiveType == aiPrimitiveType_POINT) {
                for(size_t i = 0; i < inp->m_vertices.size(); ++i) {
                    aiFace& f = pMesh->mFaces[ outIndex++ ];
                    uiIdxCount += f.mNumIndices = 1;
                    f.mIndices = new unsigned int[1];
                }
                continue;
            }

            aiFace *pFace = &pMesh->mFaces[ outIndex++ ];
            const unsigned int uiNumIndices = (unsigned int) face->m_vertices.size();
            uiIdxCount += pFace->mNumIndices = (unsigned int) uiNumIndices;
            if (pFace->mNumIndices > 0) {
                pFace->mIndices = new unsigned int[ uiNumIndices ];
            }
        }
    }

    // Create mesh vertices
    createVertexArray(pModel, pData, meshIndex, pMesh.get(), uiIdxCount);

    return pMesh.release();
}

// ------------------------------------------------------------------------------------------------
//  Creates a vertex array
void ObjFileImporter::createVertexArray(const ObjFile::Model* pModel,
                                        const ObjFile::Object* pCurrentObject,
                                        unsigned int uiMeshIndex,
                                        aiMesh* pMesh,
                                        unsigned int numIndices) {
    // Checking preconditions
    ai_assert( NULL != pCurrentObject );

    // Break, if no faces are stored in object
    if ( pCurrentObject->m_Meshes.empty() )
        return;

    // Get current mesh
    ObjFile::Mesh *pObjMesh = pModel->m_Meshes[ uiMeshIndex ];
    if ( NULL == pObjMesh || pObjMesh->m_uiNumIndices < 1 ) {
        return;
    }

    // Copy vertices of this mesh instance
    pMesh->mNumVertices = numIndices;
    if (pMesh->mNumVertices == 0) {
        throw DeadlyImportError( "OBJ: no vertices" );
    } else if (pMesh->mNumVertices > AI_MAX_VERTICES) {
        throw DeadlyImportError( "OBJ: Too many vertices" );
    }
    pMesh->mVertices = new aiVector3D[ pMesh->mNumVertices ];

    // Allocate buffer for normal vectors
    if ( !pModel->m_Normals.empty() && pObjMesh->m_hasNormals )
        pMesh->mNormals = new aiVector3D[ pMesh->mNumVertices ];

    // Allocate buffer for vertex-color vectors
    if ( !pModel->m_VertexColors.empty() )
        pMesh->mColors[0] = new aiColor4D[ pMesh->mNumVertices ];

    // Allocate buffer for texture coordinates
    if ( !pModel->m_TextureCoord.empty() && pObjMesh->m_uiUVCoordinates[0] )
    {
        pMesh->mNumUVComponents[ 0 ] = pModel->m_TextureCoordDim;
        pMesh->mTextureCoords[ 0 ] = new aiVector3D[ pMesh->mNumVertices ];
    }

    // Copy vertices, normals and textures into aiMesh instance
    bool normalsok = true, uvok = true;
    unsigned int newIndex = 0, outIndex = 0;
    for (auto sourceFace : pObjMesh->m_Faces) {
        // Copy all index arrays
        for (size_t vertexIndex = 0, outVertexIndex = 0; vertexIndex < sourceFace->m_vertices.size(); vertexIndex++ ) {
            const unsigned int vertex = sourceFace->m_vertices.at(vertexIndex );
            if ( vertex >= pModel->m_Vertices.size() ) {
                throw DeadlyImportError( "OBJ: vertex index out of range" );
            }

            if ( pMesh->mNumVertices <= newIndex ) {
                throw DeadlyImportError("OBJ: bad vertex index");
            }

            pMesh->mVertices[ newIndex ] = pModel->m_Vertices[ vertex ];

            // Copy all normals
            if ( normalsok && !pModel->m_Normals.empty() && vertexIndex < sourceFace->m_normals.size()) {
                const unsigned int normal = sourceFace->m_normals.at(vertexIndex );
                if ( normal >= pModel->m_Normals.size() )
                {
                    normalsok = false;
                }
                else
                {
                    pMesh->mNormals[ newIndex ] = pModel->m_Normals[ normal ];
                }
            }

            // Copy all vertex colors
            if ( !pModel->m_VertexColors.empty())
            {
                const aiVector3D& color = pModel->m_VertexColors[ vertex ];
                pMesh->mColors[0][ newIndex ] = aiColor4D(color.x, color.y, color.z, 1.0);
            }

            // Copy all texture coordinates
            if ( uvok && !pModel->m_TextureCoord.empty() && vertexIndex < sourceFace->m_texturCoords.size())
            {
                const unsigned int tex = sourceFace->m_texturCoords.at(vertexIndex );

                if ( tex >= pModel->m_TextureCoord.size() )
                {
                    uvok = false;
                }
                else
                {
                    const aiVector3D &coord3d = pModel->m_TextureCoord[ tex ];
                    pMesh->mTextureCoords[ 0 ][ newIndex ] = aiVector3D( coord3d.x, coord3d.y, coord3d.z );
                }
            }

            // Get destination face
            aiFace *pDestFace = &pMesh->mFaces[ outIndex ];

            const bool last = (vertexIndex == sourceFace->m_vertices.size() - 1 );
            if (sourceFace->m_PrimitiveType != aiPrimitiveType_LINE || !last) {
                pDestFace->mIndices[ outVertexIndex ] = newIndex;
                outVertexIndex++;
            }

            if (sourceFace->m_PrimitiveType == aiPrimitiveType_POINT) {
                outIndex++;
                outVertexIndex = 0;
            } else if (sourceFace->m_PrimitiveType == aiPrimitiveType_LINE) {
                outVertexIndex = 0;

                if(!last)
                    outIndex++;

                if (vertexIndex) {
                    if(!last) {
                        pMesh->mVertices[ newIndex+1 ] = pMesh->mVertices[ newIndex ];
                        if (!sourceFace->m_normals.empty() && !pModel->m_Normals.empty()) {
                            pMesh->mNormals[ newIndex+1 ] = pMesh->mNormals[newIndex ];
                        }
                        if ( !pModel->m_TextureCoord.empty() ) {
                            for ( size_t i=0; i < pMesh->GetNumUVChannels(); i++ ) {
                                pMesh->mTextureCoords[ i ][ newIndex+1 ] = pMesh->mTextureCoords[ i ][ newIndex ];
                            }
                        }
                        ++newIndex;
                    }

                    pDestFace[-1].mIndices[1] = newIndex;
                }
            }
            else if (last) {
                outIndex++;
            }
            ++newIndex;
        }
    }

    if (!normalsok)
    {
        delete [] pMesh->mNormals;
        pMesh->mNormals = nullptr;
    }

    if (!uvok)
    {
        delete [] pMesh->mTextureCoords[0];
        pMesh->mTextureCoords[0] = nullptr;
    }
}

// ------------------------------------------------------------------------------------------------
//  Counts all stored meshes
void ObjFileImporter::countObjects(const std::vector<ObjFile::Object*> &rObjects, int &iNumMeshes)
{
    iNumMeshes = 0;
    if ( rObjects.empty() )
        return;

    iNumMeshes += static_cast<unsigned int>( rObjects.size() );
    for (auto object: rObjects)
    {
        if (!object->m_SubObjects.empty())
        {
            countObjects(object->m_SubObjects, iNumMeshes);
        }
    }
}

// ------------------------------------------------------------------------------------------------
//   Add clamp mode property to material if necessary
void ObjFileImporter::addTextureMappingModeProperty( aiMaterial* mat, aiTextureType type, int clampMode, int index) {
    if ( nullptr == mat ) {
        return;
    }

    mat->AddProperty<int>( &clampMode, 1, AI_MATKEY_MAPPINGMODE_U( type, index ) );
    mat->AddProperty<int>( &clampMode, 1, AI_MATKEY_MAPPINGMODE_V( type, index ) );
}

// ------------------------------------------------------------------------------------------------
//  Creates the material
void ObjFileImporter::createMaterials(const ObjFile::Model* pModel, aiScene* pScene ) {
    if ( NULL == pScene ) {
        return;
    }

    const unsigned int numMaterials = (unsigned int) pModel->m_MaterialLib.size();
    pScene->mNumMaterials = 0;
    if ( pModel->m_MaterialLib.empty() ) {
        ASSIMP_LOG_DEBUG("OBJ: no materials specified");
        return;
    }

    pScene->mMaterials = new aiMaterial*[ numMaterials ];
    for ( unsigned int matIndex = 0; matIndex < numMaterials; matIndex++ )
    {
        // Store material name
        std::map<std::string, ObjFile::Material*>::const_iterator it;
        it = pModel->m_MaterialMap.find( pModel->m_MaterialLib[ matIndex ] );

        // No material found, use the default material
        if ( pModel->m_MaterialMap.end() == it )
            continue;

        aiMaterial* mat = new aiMaterial;
        ObjFile::Material *pCurrentMaterial = (*it).second;
        mat->AddProperty( &pCurrentMaterial->MaterialName, AI_MATKEY_NAME );

        // convert illumination model
        int sm = 0;
        switch (pCurrentMaterial->illumination_model)
        {
        case 0:
            sm = aiShadingMode_NoShading;
            break;
        case 1:
            sm = aiShadingMode_Gouraud;
            break;
        case 2:
            sm = aiShadingMode_Phong;
            break;
        default:
            sm = aiShadingMode_Gouraud;
            ASSIMP_LOG_ERROR("OBJ: unexpected illumination model (0-2 recognized)");
        }

        mat->AddProperty<int>( &sm, 1, AI_MATKEY_SHADING_MODEL);

        // Adding material colors
        mat->AddProperty( &pCurrentMaterial->ambient, 1, AI_MATKEY_COLOR_AMBIENT );
        mat->AddProperty( &pCurrentMaterial->diffuse, 1, AI_MATKEY_COLOR_DIFFUSE );
        mat->AddProperty( &pCurrentMaterial->specular, 1, AI_MATKEY_COLOR_SPECULAR );
        mat->AddProperty( &pCurrentMaterial->emissive, 1, AI_MATKEY_COLOR_EMISSIVE );
        mat->AddProperty( &pCurrentMaterial->shineness, 1, AI_MATKEY_SHININESS );
        mat->AddProperty( &pCurrentMaterial->alpha, 1, AI_MATKEY_OPACITY );
        mat->AddProperty( &pCurrentMaterial->transparent,1,AI_MATKEY_COLOR_TRANSPARENT);

        // Adding refraction index
        mat->AddProperty( &pCurrentMaterial->ior, 1, AI_MATKEY_REFRACTI );

        // Adding textures
        const int uvwIndex = 0;

        if ( 0 != pCurrentMaterial->texture.length )
        {
            mat->AddProperty( &pCurrentMaterial->texture, AI_MATKEY_TEXTURE_DIFFUSE(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_DIFFUSE(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureDiffuseType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_DIFFUSE);
            }
        }

        if ( 0 != pCurrentMaterial->textureAmbient.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureAmbient, AI_MATKEY_TEXTURE_AMBIENT(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_AMBIENT(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureAmbientType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_AMBIENT);
            }
        }

        if ( 0 != pCurrentMaterial->textureEmissive.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureEmissive, AI_MATKEY_TEXTURE_EMISSIVE(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_EMISSIVE(0) );
        }

        if ( 0 != pCurrentMaterial->textureSpecular.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureSpecular, AI_MATKEY_TEXTURE_SPECULAR(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_SPECULAR(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureSpecularType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_SPECULAR);
            }
        }

        if ( 0 != pCurrentMaterial->textureBump.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureBump, AI_MATKEY_TEXTURE_HEIGHT(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_HEIGHT(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureBumpType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_HEIGHT);
            }
        }

        if ( 0 != pCurrentMaterial->textureNormal.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureNormal, AI_MATKEY_TEXTURE_NORMALS(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_NORMALS(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureNormalType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_NORMALS);
            }
        }

        if( 0 != pCurrentMaterial->textureReflection[0].length )
        {
            ObjFile::Material::TextureType type = 0 != pCurrentMaterial->textureReflection[1].length ?
                ObjFile::Material::TextureReflectionCubeTopType :
                ObjFile::Material::TextureReflectionSphereType;

            unsigned count = type == ObjFile::Material::TextureReflectionSphereType ? 1 : 6;
            for( unsigned i = 0; i < count; i++ )
            {
                mat->AddProperty(&pCurrentMaterial->textureReflection[i], AI_MATKEY_TEXTURE_REFLECTION(i));
                mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_REFLECTION(i) );

                if(pCurrentMaterial->clamp[type])
                    addTextureMappingModeProperty(mat, aiTextureType_REFLECTION, 1, i);
            }
        }

        if ( 0 != pCurrentMaterial->textureDisp.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureDisp, AI_MATKEY_TEXTURE_DISPLACEMENT(0) );
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_DISPLACEMENT(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureDispType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_DISPLACEMENT);
            }
        }

        if ( 0 != pCurrentMaterial->textureOpacity.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureOpacity, AI_MATKEY_TEXTURE_OPACITY(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_OPACITY(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureOpacityType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_OPACITY);
            }
        }

        if ( 0 != pCurrentMaterial->textureSpecularity.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureSpecularity, AI_MATKEY_TEXTURE_SHININESS(0));
            mat->AddProperty( &uvwIndex, 1, AI_MATKEY_UVWSRC_SHININESS(0) );
            if (pCurrentMaterial->clamp[ObjFile::Material::TextureSpecularityType])
            {
                addTextureMappingModeProperty(mat, aiTextureType_SHININESS);
            }
        }

        // Store material property info in material array in scene
        pScene->mMaterials[ pScene->mNumMaterials ] = mat;
        pScene->mNumMaterials++;
    }

    // Test number of created materials.
    ai_assert( pScene->mNumMaterials == numMaterials );
}

// ------------------------------------------------------------------------------------------------
//  Appends this node to the parent node
void ObjFileImporter::appendChildToParentNode(aiNode *pParent, aiNode *pChild)
{
    // Checking preconditions
    ai_assert( NULL != pParent );
    ai_assert( NULL != pChild );

    // Assign parent to child
    pChild->mParent = pParent;

    // Copy node instances into parent node
    pParent->mNumChildren++;
    pParent->mChildren[ pParent->mNumChildren-1 ] = pChild;
}

// ------------------------------------------------------------------------------------------------

}   // Namespace Assimp

#endif // !! ASSIMP_BUILD_NO_OBJ_IMPORTER