NvCloth 1.1.4 Release. (24070740)

1 files changed, 909 insertions, 0 deletions

diff --git a/NvCloth/samples/external/assimp-4.1.0/code/ACLoader.cpp b/NvCloth/samples/external/assimp-4.1.0/code/ACLoader.cpp
new file mode 100644
index 0000000..a30baa7
--- /dev/null
+++ b/NvCloth/samples/external/assimp-4.1.0/code/ACLoader.cpp
@@ -0,0 +1,909 @@
+
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2017, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file Implementation of the AC3D importer class */
+
+
+
+#ifndef ASSIMP_BUILD_NO_AC_IMPORTER
+
+// internal headers
+#include "ACLoader.h"
+#include "ParsingUtils.h"
+#include "fast_atof.h"
+#include "Subdivision.h"
+#include "Importer.h"
+#include "BaseImporter.h"
+#include <assimp/Importer.hpp>
+#include <assimp/light.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/material.h>
+#include <assimp/scene.h>
+#include <assimp/config.h>
+#include <assimp/IOSystem.hpp>
+#include <assimp/importerdesc.h>
+#include <memory>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "AC3D Importer",
+    "",
+    "",
+    "",
+    aiImporterFlags_SupportTextFlavour,
+    0,
+    0,
+    0,
+    0,
+    "ac acc ac3d"
+};
+
+// ------------------------------------------------------------------------------------------------
+// skip to the next token
+#define AI_AC_SKIP_TO_NEXT_TOKEN() \
+    if (!SkipSpaces(&buffer)) \
+    { \
+        DefaultLogger::get()->error("AC3D: Unexpected EOF/EOL"); \
+        continue; \
+    }
+
+// ------------------------------------------------------------------------------------------------
+// read a string (may be enclosed in double quotation marks). buffer must point to "
+#define AI_AC_GET_STRING(out) \
+    if (*buffer == '\0') { \
+        throw DeadlyImportError("AC3D: Unexpected EOF in string"); \
+    } \
+    ++buffer; \
+    const char* sz = buffer; \
+    while ('\"' != *buffer) \
+    { \
+        if (IsLineEnd( *buffer )) \
+        { \
+            DefaultLogger::get()->error("AC3D: Unexpected EOF/EOL in string"); \
+            out = "ERROR"; \
+            break; \
+        } \
+        ++buffer; \
+    } \
+    if (IsLineEnd( *buffer ))continue; \
+    out = std::string(sz,(unsigned int)(buffer-sz)); \
+    ++buffer;
+
+
+// ------------------------------------------------------------------------------------------------
+// read 1 to n floats prefixed with an optional predefined identifier
+#define AI_AC_CHECKED_LOAD_FLOAT_ARRAY(name,name_length,num,out) \
+    AI_AC_SKIP_TO_NEXT_TOKEN(); \
+    if (name_length) \
+    { \
+        if (strncmp(buffer,name,name_length) || !IsSpace(buffer[name_length])) \
+        { \
+            DefaultLogger::get()->error("AC3D: Unexpexted token. " name " was expected."); \
+            continue; \
+        } \
+        buffer += name_length+1; \
+    } \
+    for (unsigned int i = 0; i < num;++i) \
+    { \
+        AI_AC_SKIP_TO_NEXT_TOKEN(); \
+        buffer = fast_atoreal_move<float>(buffer,((float*)out)[i]); \
+    }
+
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+AC3DImporter::AC3DImporter()
+    : buffer(),
+    configSplitBFCull(),
+    configEvalSubdivision(),
+    mNumMeshes(),
+    mLights(),
+    lights(),
+    groups(),
+    polys(),
+    worlds()
+{
+    // nothing to be done here
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+AC3DImporter::~AC3DImporter()
+{
+    // nothing to be done here
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool AC3DImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
+{
+    std::string extension = GetExtension(pFile);
+
+    // fixme: are acc and ac3d *really* used? Some sources say they are
+    if(extension == "ac" || extension == "ac3d" || extension == "acc") {
+        return true;
+    }
+    if (!extension.length() || checkSig) {
+        uint32_t token = AI_MAKE_MAGIC("AC3D");
+        return CheckMagicToken(pIOHandler,pFile,&token,1,0);
+    }
+    return false;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Loader meta information
+const aiImporterDesc* AC3DImporter::GetInfo () const
+{
+    return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get a pointer to the next line from the file
+bool AC3DImporter::GetNextLine( )
+{
+    SkipLine(&buffer);
+    return SkipSpaces(&buffer);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Parse an object section in an AC file
+void AC3DImporter::LoadObjectSection(std::vector<Object>& objects)
+{
+    if (!TokenMatch(buffer,"OBJECT",6))
+        return;
+
+    SkipSpaces(&buffer);
+
+    ++mNumMeshes;
+
+    objects.push_back(Object());
+    Object& obj = objects.back();
+
+    aiLight* light = NULL;
+    if (!ASSIMP_strincmp(buffer,"light",5))
+    {
+        // This is a light source. Add it to the list
+        mLights->push_back(light = new aiLight());
+
+        // Return a point light with no attenuation
+        light->mType = aiLightSource_POINT;
+        light->mColorDiffuse = light->mColorSpecular = aiColor3D(1.f,1.f,1.f);
+        light->mAttenuationConstant = 1.f;
+
+        // Generate a default name for both the light source and the node
+        // FIXME - what's the right way to print a size_t? Is 'zu' universally available? stick with the safe version.
+        light->mName.length = ::ai_snprintf(light->mName.data, MAXLEN, "ACLight_%i",static_cast<unsigned int>(mLights->size())-1);
+        obj.name = std::string( light->mName.data );
+
+        DefaultLogger::get()->debug("AC3D: Light source encountered");
+        obj.type = Object::Light;
+    }
+    else if (!ASSIMP_strincmp(buffer,"group",5))
+    {
+        obj.type = Object::Group;
+    }
+    else if (!ASSIMP_strincmp(buffer,"world",5))
+    {
+        obj.type = Object::World;
+    }
+    else obj.type = Object::Poly;
+    while (GetNextLine())
+    {
+        if (TokenMatch(buffer,"kids",4))
+        {
+            SkipSpaces(&buffer);
+            unsigned int num = strtoul10(buffer,&buffer);
+            GetNextLine();
+            if (num)
+            {
+                // load the children of this object recursively
+                obj.children.reserve(num);
+                for (unsigned int i = 0; i < num; ++i)
+                    LoadObjectSection(obj.children);
+            }
+            return;
+        }
+        else if (TokenMatch(buffer,"name",4))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_GET_STRING(obj.name);
+
+            // If this is a light source, we'll also need to store
+            // the name of the node in it.
+            if (light)
+            {
+                light->mName.Set(obj.name);
+            }
+        }
+        else if (TokenMatch(buffer,"texture",7))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_GET_STRING(obj.texture);
+        }
+        else if (TokenMatch(buffer,"texrep",6))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,2,&obj.texRepeat);
+            if (!obj.texRepeat.x || !obj.texRepeat.y)
+                obj.texRepeat = aiVector2D (1.f,1.f);
+        }
+        else if (TokenMatch(buffer,"texoff",6))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,2,&obj.texOffset);
+        }
+        else if (TokenMatch(buffer,"rot",3))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,9,&obj.rotation);
+        }
+        else if (TokenMatch(buffer,"loc",3))
+        {
+            SkipSpaces(&buffer);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,3,&obj.translation);
+        }
+        else if (TokenMatch(buffer,"subdiv",6))
+        {
+            SkipSpaces(&buffer);
+            obj.subDiv = strtoul10(buffer,&buffer);
+        }
+        else if (TokenMatch(buffer,"crease",6))
+        {
+            SkipSpaces(&buffer);
+            obj.crease = fast_atof(buffer);
+        }
+        else if (TokenMatch(buffer,"numvert",7))
+        {
+            SkipSpaces(&buffer);
+
+            unsigned int t = strtoul10(buffer,&buffer);
+            if (t >= AI_MAX_ALLOC(aiVector3D)) {
+                throw DeadlyImportError("AC3D: Too many vertices, would run out of memory");
+            }
+            obj.vertices.reserve(t);
+            for (unsigned int i = 0; i < t;++i)
+            {
+                if (!GetNextLine())
+                {
+                    DefaultLogger::get()->error("AC3D: Unexpected EOF: not all vertices have been parsed yet");
+                    break;
+                }
+                else if (!IsNumeric(*buffer))
+                {
+                    DefaultLogger::get()->error("AC3D: Unexpected token: not all vertices have been parsed yet");
+                    --buffer; // make sure the line is processed a second time
+                    break;
+                }
+                obj.vertices.push_back(aiVector3D());
+                aiVector3D& v = obj.vertices.back();
+                AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,3,&v.x);
+            }
+        }
+        else if (TokenMatch(buffer,"numsurf",7))
+        {
+            SkipSpaces(&buffer);
+
+            bool Q3DWorkAround = false;
+
+            const unsigned int t = strtoul10(buffer,&buffer);
+            obj.surfaces.reserve(t);
+            for (unsigned int i = 0; i < t;++i)
+            {
+                GetNextLine();
+                if (!TokenMatch(buffer,"SURF",4))
+                {
+                    // FIX: this can occur for some files - Quick 3D for
+                    // example writes no surf chunks
+                    if (!Q3DWorkAround)
+                    {
+                        DefaultLogger::get()->warn("AC3D: SURF token was expected");
+                        DefaultLogger::get()->debug("Continuing with Quick3D Workaround enabled");
+                    }
+                    --buffer; // make sure the line is processed a second time
+                    // break; --- see fix notes above
+
+                    Q3DWorkAround = true;
+                }
+                SkipSpaces(&buffer);
+                obj.surfaces.push_back(Surface());
+                Surface& surf = obj.surfaces.back();
+                surf.flags = strtoul_cppstyle(buffer);
+
+                while (1)
+                {
+                    if(!GetNextLine())
+                    {
+                        throw DeadlyImportError("AC3D: Unexpected EOF: surface is incomplete");
+                    }
+                    if (TokenMatch(buffer,"mat",3))
+                    {
+                        SkipSpaces(&buffer);
+                        surf.mat = strtoul10(buffer);
+                    }
+                    else if (TokenMatch(buffer,"refs",4))
+                    {
+                        // --- see fix notes above
+                        if (Q3DWorkAround)
+                        {
+                            if (!surf.entries.empty())
+                            {
+                                buffer -= 6;
+                                break;
+                            }
+                        }
+
+                        SkipSpaces(&buffer);
+                        const unsigned int m = strtoul10(buffer);
+                        surf.entries.reserve(m);
+
+                        obj.numRefs += m;
+
+                        for (unsigned int k = 0; k < m; ++k)
+                        {
+                            if(!GetNextLine())
+                            {
+                                DefaultLogger::get()->error("AC3D: Unexpected EOF: surface references are incomplete");
+                                break;
+                            }
+                            surf.entries.push_back(Surface::SurfaceEntry());
+                            Surface::SurfaceEntry& entry = surf.entries.back();
+
+                            entry.first = strtoul10(buffer,&buffer);
+                            SkipSpaces(&buffer);
+                            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("",0,2,&entry.second);
+                        }
+                    }
+                    else
+                    {
+
+                        --buffer; // make sure the line is processed a second time
+                        break;
+                    }
+                }
+            }
+        }
+    }
+    DefaultLogger::get()->error("AC3D: Unexpected EOF: \'kids\' line was expected");
+}
+
+// ------------------------------------------------------------------------------------------------
+// Convert a material from AC3DImporter::Material to aiMaterial
+void AC3DImporter::ConvertMaterial(const Object& object,
+    const Material& matSrc,
+    aiMaterial& matDest)
+{
+    aiString s;
+
+    if (matSrc.name.length())
+    {
+        s.Set(matSrc.name);
+        matDest.AddProperty(&s,AI_MATKEY_NAME);
+    }
+    if (object.texture.length())
+    {
+        s.Set(object.texture);
+        matDest.AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(0));
+
+        // UV transformation
+        if (1.f != object.texRepeat.x || 1.f != object.texRepeat.y ||
+            object.texOffset.x        || object.texOffset.y)
+        {
+            aiUVTransform transform;
+            transform.mScaling = object.texRepeat;
+            transform.mTranslation = object.texOffset;
+            matDest.AddProperty(&transform,1,AI_MATKEY_UVTRANSFORM_DIFFUSE(0));
+        }
+    }
+
+    matDest.AddProperty<aiColor3D>(&matSrc.rgb,1, AI_MATKEY_COLOR_DIFFUSE);
+    matDest.AddProperty<aiColor3D>(&matSrc.amb,1, AI_MATKEY_COLOR_AMBIENT);
+    matDest.AddProperty<aiColor3D>(&matSrc.emis,1,AI_MATKEY_COLOR_EMISSIVE);
+    matDest.AddProperty<aiColor3D>(&matSrc.spec,1,AI_MATKEY_COLOR_SPECULAR);
+
+    int n;
+    if (matSrc.shin)
+    {
+        n = aiShadingMode_Phong;
+        matDest.AddProperty<float>(&matSrc.shin,1,AI_MATKEY_SHININESS);
+    }
+    else n = aiShadingMode_Gouraud;
+    matDest.AddProperty<int>(&n,1,AI_MATKEY_SHADING_MODEL);
+
+    float f = 1.f - matSrc.trans;
+    matDest.AddProperty<float>(&f,1,AI_MATKEY_OPACITY);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Converts the loaded data to the internal verbose representation
+aiNode* AC3DImporter::ConvertObjectSection(Object& object,
+    std::vector<aiMesh*>& meshes,
+    std::vector<aiMaterial*>& outMaterials,
+    const std::vector<Material>& materials,
+    aiNode* parent)
+{
+    aiNode* node = new aiNode();
+    node->mParent = parent;
+    if (object.vertices.size())
+    {
+        if (!object.surfaces.size() || !object.numRefs)
+        {
+            /* " An object with 7 vertices (no surfaces, no materials defined).
+                 This is a good way of getting point data into AC3D.
+                 The Vertex->create convex-surface/object can be used on these
+                 vertices to 'wrap' a 3d shape around them "
+                 (http://www.opencity.info/html/ac3dfileformat.html)
+
+                 therefore: if no surfaces are defined return point data only
+             */
+
+            DefaultLogger::get()->info("AC3D: No surfaces defined in object definition, "
+                "a point list is returned");
+
+            meshes.push_back(new aiMesh());
+            aiMesh* mesh = meshes.back();
+
+            mesh->mNumFaces = mesh->mNumVertices = (unsigned int)object.vertices.size();
+            aiFace* faces = mesh->mFaces = new aiFace[mesh->mNumFaces];
+            aiVector3D* verts = mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+
+            for (unsigned int i = 0; i < mesh->mNumVertices;++i,++faces,++verts)
+            {
+                *verts = object.vertices[i];
+                faces->mNumIndices = 1;
+                faces->mIndices = new unsigned int[1];
+                faces->mIndices[0] = i;
+            }
+
+            // use the primary material in this case. this should be the
+            // default material if all objects of the file contain points
+            // and no faces.
+            mesh->mMaterialIndex = 0;
+            outMaterials.push_back(new aiMaterial());
+            ConvertMaterial(object, materials[0], *outMaterials.back());
+        }
+        else
+        {
+            // need to generate one or more meshes for this object.
+            // find out how many different materials we have
+            typedef std::pair< unsigned int, unsigned int > IntPair;
+            typedef std::vector< IntPair > MatTable;
+            MatTable needMat(materials.size(),IntPair(0,0));
+
+            std::vector<Surface>::iterator it,end = object.surfaces.end();
+            std::vector<Surface::SurfaceEntry>::iterator it2,end2;
+
+            for (it = object.surfaces.begin(); it != end; ++it)
+            {
+                unsigned int idx = (*it).mat;
+                if (idx >= needMat.size())
+                {
+                    DefaultLogger::get()->error("AC3D: material index is out of range");
+                    idx = 0;
+                }
+                if ((*it).entries.empty())
+                {
+                    DefaultLogger::get()->warn("AC3D: surface her zero vertex references");
+                }
+
+                // validate all vertex indices to make sure we won't crash here
+                for (it2  = (*it).entries.begin(),
+                     end2 = (*it).entries.end(); it2 != end2; ++it2)
+                {
+                    if ((*it2).first >= object.vertices.size())
+                    {
+                        DefaultLogger::get()->warn("AC3D: Invalid vertex reference");
+                        (*it2).first = 0;
+                    }
+                }
+
+                if (!needMat[idx].first)++node->mNumMeshes;
+
+                switch ((*it).flags & 0xf)
+                {
+                    // closed line
+                case 0x1:
+
+                    needMat[idx].first  += (unsigned int)(*it).entries.size();
+                    needMat[idx].second += (unsigned int)(*it).entries.size()<<1u;
+                    break;
+
+                    // unclosed line
+                case 0x2:
+
+                    needMat[idx].first  += (unsigned int)(*it).entries.size()-1;
+                    needMat[idx].second += ((unsigned int)(*it).entries.size()-1)<<1u;
+                    break;
+
+                    // 0 == polygon, else unknown
+                default:
+
+                    if ((*it).flags & 0xf)
+                    {
+                        DefaultLogger::get()->warn("AC3D: The type flag of a surface is unknown");
+                        (*it).flags &= ~(0xf);
+                    }
+
+                    // the number of faces increments by one, the number
+                    // of vertices by surface.numref.
+                    needMat[idx].first++;
+                    needMat[idx].second += (unsigned int)(*it).entries.size();
+                };
+            }
+            unsigned int* pip = node->mMeshes = new unsigned int[node->mNumMeshes];
+            unsigned int mat = 0;
+            const size_t oldm = meshes.size();
+            for (MatTable::const_iterator cit = needMat.begin(), cend = needMat.end();
+                cit != cend; ++cit, ++mat)
+            {
+                if (!(*cit).first)continue;
+
+                // allocate a new aiMesh object
+                *pip++ = (unsigned int)meshes.size();
+                aiMesh* mesh = new aiMesh();
+                meshes.push_back(mesh);
+
+                mesh->mMaterialIndex = (unsigned int)outMaterials.size();
+                outMaterials.push_back(new aiMaterial());
+                ConvertMaterial(object, materials[mat], *outMaterials.back());
+
+                // allocate storage for vertices and normals
+                mesh->mNumFaces = (*cit).first;
+                if (mesh->mNumFaces == 0) {
+                    throw DeadlyImportError("AC3D: No faces");
+                } else if (mesh->mNumFaces > AI_MAX_ALLOC(aiFace)) {
+                    throw DeadlyImportError("AC3D: Too many faces, would run out of memory");
+                }
+                aiFace* faces = mesh->mFaces = new aiFace[mesh->mNumFaces];
+
+                mesh->mNumVertices = (*cit).second;
+                if (mesh->mNumVertices == 0) {
+                    throw DeadlyImportError("AC3D: No vertices");
+                } else if (mesh->mNumVertices > AI_MAX_ALLOC(aiVector3D)) {
+                    throw DeadlyImportError("AC3D: Too many vertices, would run out of memory");
+                }
+                aiVector3D* vertices = mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+                unsigned int cur = 0;
+
+                // allocate UV coordinates, but only if the texture name for the
+                // surface is not empty
+                aiVector3D* uv = NULL;
+                if(object.texture.length())
+                {
+                    uv = mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
+                    mesh->mNumUVComponents[0] = 2;
+                }
+
+                for (it = object.surfaces.begin(); it != end; ++it)
+                {
+                    if (mat == (*it).mat)
+                    {
+                        const Surface& src = *it;
+
+                        // closed polygon
+                        unsigned int type = (*it).flags & 0xf;
+                        if (!type)
+                        {
+                            aiFace& face = *faces++;
+                            if((face.mNumIndices = (unsigned int)src.entries.size()))
+                            {
+                                face.mIndices = new unsigned int[face.mNumIndices];
+                                for (unsigned int i = 0; i < face.mNumIndices;++i,++vertices)
+                                {
+                                    const Surface::SurfaceEntry& entry = src.entries[i];
+                                    face.mIndices[i] = cur++;
+
+                                    // copy vertex positions
+                                    if (static_cast<unsigned>(vertices - mesh->mVertices) >= mesh->mNumVertices) {
+                                        throw DeadlyImportError("AC3D: Invalid number of vertices");
+                                    }
+                                    *vertices = object.vertices[entry.first] + object.translation;
+
+
+                                    // copy texture coordinates
+                                    if (uv)
+                                    {
+                                        uv->x =  entry.second.x;
+                                        uv->y =  entry.second.y;
+                                        ++uv;
+                                    }
+                                }
+                            }
+                        }
+                        else
+                        {
+
+                            it2  = (*it).entries.begin();
+
+                            // either a closed or an unclosed line
+                            unsigned int tmp = (unsigned int)(*it).entries.size();
+                            if (0x2 == type)--tmp;
+                            for (unsigned int m = 0; m < tmp;++m)
+                            {
+                                aiFace& face = *faces++;
+
+                                face.mNumIndices = 2;
+                                face.mIndices = new unsigned int[2];
+                                face.mIndices[0] = cur++;
+                                face.mIndices[1] = cur++;
+
+                                // copy vertex positions
+                                if (it2 == (*it).entries.end() ) {
+                                    throw DeadlyImportError("AC3D: Bad line");
+                                }
+                                ai_assert((*it2).first < object.vertices.size());
+                                *vertices++ = object.vertices[(*it2).first];
+
+                                // copy texture coordinates
+                                if (uv)
+                                {
+                                    uv->x =  (*it2).second.x;
+                                    uv->y =  (*it2).second.y;
+                                    ++uv;
+                                }
+
+
+                                if (0x1 == type && tmp-1 == m)
+                                {
+                                    // if this is a closed line repeat its beginning now
+                                    it2  = (*it).entries.begin();
+                                }
+                                else ++it2;
+
+                                // second point
+                                *vertices++ = object.vertices[(*it2).first];
+
+                                if (uv)
+                                {
+                                    uv->x =  (*it2).second.x;
+                                    uv->y =  (*it2).second.y;
+                                    ++uv;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Now apply catmull clark subdivision if necessary. We split meshes into
+            // materials which is not done by AC3D during smoothing, so we need to
+            // collect all meshes using the same material group.
+            if (object.subDiv)  {
+                if (configEvalSubdivision) {
+                    std::unique_ptr<Subdivider> div(Subdivider::Create(Subdivider::CATMULL_CLARKE));
+                    DefaultLogger::get()->info("AC3D: Evaluating subdivision surface: "+object.name);
+
+                    std::vector<aiMesh*> cpy(meshes.size()-oldm,NULL);
+                    div->Subdivide(&meshes[oldm],cpy.size(),&cpy.front(),object.subDiv,true);
+                    std::copy(cpy.begin(),cpy.end(),meshes.begin()+oldm);
+
+                    // previous meshes are deleted vy Subdivide().
+                }
+                else {
+                    DefaultLogger::get()->info("AC3D: Letting the subdivision surface untouched due to my configuration: "
+                        +object.name);
+                }
+            }
+        }
+    }
+
+    if (object.name.length())
+        node->mName.Set(object.name);
+    else
+    {
+        // generate a name depending on the type of the node
+        switch (object.type)
+        {
+        case Object::Group:
+            node->mName.length = ::ai_snprintf(node->mName.data, MAXLEN, "ACGroup_%i",groups++);
+            break;
+        case Object::Poly:
+            node->mName.length = ::ai_snprintf(node->mName.data, MAXLEN, "ACPoly_%i",polys++);
+            break;
+        case Object::Light:
+            node->mName.length = ::ai_snprintf(node->mName.data, MAXLEN, "ACLight_%i",lights++);
+            break;
+
+            // there shouldn't be more than one world, but we don't care
+        case Object::World:
+            node->mName.length = ::ai_snprintf(node->mName.data, MAXLEN, "ACWorld_%i",worlds++);
+            break;
+        }
+    }
+
+
+    // setup the local transformation matrix of the object
+    // compute the transformation offset to the parent node
+    node->mTransformation = aiMatrix4x4 ( object.rotation );
+
+    if (object.type == Object::Group || !object.numRefs)
+    {
+        node->mTransformation.a4 = object.translation.x;
+        node->mTransformation.b4 = object.translation.y;
+        node->mTransformation.c4 = object.translation.z;
+    }
+
+    // add children to the object
+    if (object.children.size())
+    {
+        node->mNumChildren = (unsigned int)object.children.size();
+        node->mChildren = new aiNode*[node->mNumChildren];
+        for (unsigned int i = 0; i < node->mNumChildren;++i)
+        {
+            node->mChildren[i] = ConvertObjectSection(object.children[i],meshes,outMaterials,materials,node);
+        }
+    }
+
+    return node;
+}
+
+// ------------------------------------------------------------------------------------------------
+void AC3DImporter::SetupProperties(const Importer* pImp)
+{
+    configSplitBFCull = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_AC_SEPARATE_BFCULL,1) ? true : false;
+    configEvalSubdivision =  pImp->GetPropertyInteger(AI_CONFIG_IMPORT_AC_EVAL_SUBDIVISION,1) ? true : false;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void AC3DImporter::InternReadFile( const std::string& pFile,
+    aiScene* pScene, IOSystem* pIOHandler)
+{
+    std::unique_ptr<IOStream> file( pIOHandler->Open( pFile, "rb"));
+
+    // Check whether we can read from the file
+    if( file.get() == NULL)
+        throw DeadlyImportError( "Failed to open AC3D file " + pFile + ".");
+
+    // allocate storage and copy the contents of the file to a memory buffer
+    std::vector<char> mBuffer2;
+    TextFileToBuffer(file.get(),mBuffer2);
+
+    buffer = &mBuffer2[0];
+    mNumMeshes = 0;
+
+    lights = polys = worlds = groups = 0;
+
+    if (::strncmp(buffer,"AC3D",4)) {
+        throw DeadlyImportError("AC3D: No valid AC3D file, magic sequence not found");
+    }
+
+    // print the file format version to the console
+    unsigned int version = HexDigitToDecimal( buffer[4] );
+    char msg[3];
+    ASSIMP_itoa10(msg,3,version);
+    DefaultLogger::get()->info(std::string("AC3D file format version: ") + msg);
+
+    std::vector<Material> materials;
+    materials.reserve(5);
+
+    std::vector<Object> rootObjects;
+    rootObjects.reserve(5);
+
+    std::vector<aiLight*> lights;
+    mLights = & lights;
+
+    while (GetNextLine())
+    {
+        if (TokenMatch(buffer,"MATERIAL",8))
+        {
+            materials.push_back(Material());
+            Material& mat = materials.back();
+
+            // manually parse the material ... sscanf would use the buldin atof ...
+            // Format: (name) rgb %f %f %f  amb %f %f %f  emis %f %f %f  spec %f %f %f  shi %d  trans %f
+
+            AI_AC_SKIP_TO_NEXT_TOKEN();
+            if ('\"' == *buffer)
+            {
+                AI_AC_GET_STRING(mat.name);
+                AI_AC_SKIP_TO_NEXT_TOKEN();
+            }
+
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("rgb",3,3,&mat.rgb);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("amb",3,3,&mat.amb);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("emis",4,3,&mat.emis);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("spec",4,3,&mat.spec);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("shi",3,1,&mat.shin);
+            AI_AC_CHECKED_LOAD_FLOAT_ARRAY("trans",5,1,&mat.trans);
+        }
+        LoadObjectSection(rootObjects);
+    }
+
+    if (rootObjects.empty() || !mNumMeshes)
+    {
+        throw DeadlyImportError("AC3D: No meshes have been loaded");
+    }
+    if (materials.empty())
+    {
+        DefaultLogger::get()->warn("AC3D: No material has been found");
+        materials.push_back(Material());
+    }
+
+    mNumMeshes += (mNumMeshes>>2u) + 1;
+    std::vector<aiMesh*> meshes;
+    meshes.reserve(mNumMeshes);
+
+    std::vector<aiMaterial*> omaterials;
+    materials.reserve(mNumMeshes);
+
+    // generate a dummy root if there are multiple objects on the top layer
+    Object* root;
+    if (1 == rootObjects.size())
+        root = &rootObjects[0];
+    else
+    {
+        root = new Object();
+    }
+
+    // now convert the imported stuff to our output data structure
+    pScene->mRootNode = ConvertObjectSection(*root,meshes,omaterials,materials);
+    if (1 != rootObjects.size())delete root;
+
+    if (!::strncmp( pScene->mRootNode->mName.data, "Node", 4))
+        pScene->mRootNode->mName.Set("<AC3DWorld>");
+
+    // copy meshes
+    if (meshes.empty())
+    {
+        throw DeadlyImportError("An unknown error occurred during converting");
+    }
+    pScene->mNumMeshes = (unsigned int)meshes.size();
+    pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
+    ::memcpy(pScene->mMeshes,&meshes[0],pScene->mNumMeshes*sizeof(void*));
+
+    // copy materials
+    pScene->mNumMaterials = (unsigned int)omaterials.size();
+    pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials];
+    ::memcpy(pScene->mMaterials,&omaterials[0],pScene->mNumMaterials*sizeof(void*));
+
+    // copy lights
+    pScene->mNumLights = (unsigned int)lights.size();
+    if (lights.size())
+    {
+        pScene->mLights = new aiLight*[lights.size()];
+        ::memcpy(pScene->mLights,&lights[0],lights.size()*sizeof(void*));
+    }
+}
+
+#endif //!defined ASSIMP_BUILD_NO_AC_IMPORTER