add assimp submodule

2 files changed, 691 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.cpp b/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.cpp
new file mode 100644
index 0000000..c773bbf
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.cpp
@@ -0,0 +1,575 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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  Q3DLoader.cpp
+ *  @brief Implementation of the Q3D importer class
+ */
+
+#ifndef ASSIMP_BUILD_NO_Q3D_IMPORTER
+
+// internal headers
+#include "Q3DLoader.h"
+#include <assimp/StringUtils.h>
+#include <assimp/StreamReader.h>
+#include <assimp/fast_atof.h>
+#include <assimp/importerdesc.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/IOSystem.hpp>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "Quick3D Importer",
+    "",
+    "",
+    "http://www.quick3d.com/",
+    aiImporterFlags_SupportBinaryFlavour,
+    0,
+    0,
+    0,
+    0,
+    "q3o q3s"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+Q3DImporter::Q3DImporter() {
+    // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+Q3DImporter::~Q3DImporter() {
+    // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool Q3DImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
+    static const char *tokens[] = { "quick3Do", "quick3Ds" };
+    return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
+}
+
+// ------------------------------------------------------------------------------------------------
+const aiImporterDesc *Q3DImporter::GetInfo() const {
+    return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void Q3DImporter::InternReadFile(const std::string &pFile,
+        aiScene *pScene, IOSystem *pIOHandler) {
+
+    auto file = pIOHandler->Open(pFile, "rb");
+    if (!file)
+        throw DeadlyImportError("Quick3D: Could not open ", pFile);
+
+    StreamReaderLE stream(file);
+
+    // The header is 22 bytes large
+    if (stream.GetRemainingSize() < 22)
+        throw DeadlyImportError("File is either empty or corrupt: ", pFile);
+
+    // Check the file's signature
+    if (ASSIMP_strincmp((const char *)stream.GetPtr(), "quick3Do", 8) &&
+            ASSIMP_strincmp((const char *)stream.GetPtr(), "quick3Ds", 8)) {
+        throw DeadlyImportError("Not a Quick3D file. Signature string is: ", ai_str_toprintable((const char *)stream.GetPtr(), 8));
+    }
+
+    // Print the file format version
+    ASSIMP_LOG_INFO("Quick3D File format version: ",
+            std::string(&((const char *)stream.GetPtr())[8], 2));
+
+    // ... an store it
+    char major = ((const char *)stream.GetPtr())[8];
+    char minor = ((const char *)stream.GetPtr())[9];
+
+    stream.IncPtr(10);
+    unsigned int numMeshes = (unsigned int)stream.GetI4();
+    unsigned int numMats = (unsigned int)stream.GetI4();
+    unsigned int numTextures = (unsigned int)stream.GetI4();
+
+    std::vector<Material> materials;
+    materials.reserve(numMats);
+
+    std::vector<Mesh> meshes;
+    meshes.reserve(numMeshes);
+
+    // Allocate the scene root node
+    pScene->mRootNode = new aiNode();
+
+    aiColor3D fgColor(0.6f, 0.6f, 0.6f);
+
+    // Now read all file chunks
+    while (true) {
+        if (stream.GetRemainingSize() < 1) break;
+        char c = stream.GetI1();
+        switch (c) {
+            // Meshes chunk
+        case 'm': {
+            for (unsigned int quak = 0; quak < numMeshes; ++quak) {
+                meshes.push_back(Mesh());
+                Mesh &mesh = meshes.back();
+
+                // read all vertices
+                unsigned int numVerts = (unsigned int)stream.GetI4();
+                if (!numVerts)
+                    throw DeadlyImportError("Quick3D: Found mesh with zero vertices");
+
+                std::vector<aiVector3D> &verts = mesh.verts;
+                verts.resize(numVerts);
+
+                for (unsigned int i = 0; i < numVerts; ++i) {
+                    verts[i].x = stream.GetF4();
+                    verts[i].y = stream.GetF4();
+                    verts[i].z = stream.GetF4();
+                }
+
+                // read all faces
+                numVerts = (unsigned int)stream.GetI4();
+                if (!numVerts)
+                    throw DeadlyImportError("Quick3D: Found mesh with zero faces");
+
+                std::vector<Face> &faces = mesh.faces;
+                faces.reserve(numVerts);
+
+                // number of indices
+                for (unsigned int i = 0; i < numVerts; ++i) {
+                    faces.push_back(Face(stream.GetI2()));
+                    if (faces.back().indices.empty())
+                        throw DeadlyImportError("Quick3D: Found face with zero indices");
+                }
+
+                // indices
+                for (unsigned int i = 0; i < numVerts; ++i) {
+                    Face &vec = faces[i];
+                    for (unsigned int a = 0; a < (unsigned int)vec.indices.size(); ++a)
+                        vec.indices[a] = stream.GetI4();
+                }
+
+                // material indices
+                for (unsigned int i = 0; i < numVerts; ++i) {
+                    faces[i].mat = (unsigned int)stream.GetI4();
+                }
+
+                // read all normals
+                numVerts = (unsigned int)stream.GetI4();
+                std::vector<aiVector3D> &normals = mesh.normals;
+                normals.resize(numVerts);
+
+                for (unsigned int i = 0; i < numVerts; ++i) {
+                    normals[i].x = stream.GetF4();
+                    normals[i].y = stream.GetF4();
+                    normals[i].z = stream.GetF4();
+                }
+
+                numVerts = (unsigned int)stream.GetI4();
+                if (numTextures && numVerts) {
+                    // read all texture coordinates
+                    std::vector<aiVector3D> &uv = mesh.uv;
+                    uv.resize(numVerts);
+
+                    for (unsigned int i = 0; i < numVerts; ++i) {
+                        uv[i].x = stream.GetF4();
+                        uv[i].y = stream.GetF4();
+                    }
+
+                    // UV indices
+                    for (unsigned int i = 0; i < (unsigned int)faces.size(); ++i) {
+                        Face &vec = faces[i];
+                        for (unsigned int a = 0; a < (unsigned int)vec.indices.size(); ++a) {
+                            vec.uvindices[a] = stream.GetI4();
+                            if (!i && !a)
+                                mesh.prevUVIdx = vec.uvindices[a];
+                            else if (vec.uvindices[a] != mesh.prevUVIdx)
+                                mesh.prevUVIdx = UINT_MAX;
+                        }
+                    }
+                }
+
+                // we don't need the rest, but we need to get to the next chunk
+                stream.IncPtr(36);
+                if (minor > '0' && major == '3')
+                    stream.IncPtr(mesh.faces.size());
+            }
+            // stream.IncPtr(4); // unknown value here
+        } break;
+
+            // materials chunk
+        case 'c':
+
+            for (unsigned int i = 0; i < numMats; ++i) {
+                materials.push_back(Material());
+                Material &mat = materials.back();
+
+                // read the material name
+                c = stream.GetI1();
+                while (c) {
+                    mat.name.data[mat.name.length++] = c;
+                    c = stream.GetI1();
+                }
+
+                // add the terminal character
+                mat.name.data[mat.name.length] = '\0';
+
+                // read the ambient color
+                mat.ambient.r = stream.GetF4();
+                mat.ambient.g = stream.GetF4();
+                mat.ambient.b = stream.GetF4();
+
+                // read the diffuse color
+                mat.diffuse.r = stream.GetF4();
+                mat.diffuse.g = stream.GetF4();
+                mat.diffuse.b = stream.GetF4();
+
+                // read the ambient color
+                mat.specular.r = stream.GetF4();
+                mat.specular.g = stream.GetF4();
+                mat.specular.b = stream.GetF4();
+
+                // read the transparency
+                mat.transparency = stream.GetF4();
+
+                // unknown value here
+                // stream.IncPtr(4);
+                // FIX: it could be the texture index ...
+                mat.texIdx = (unsigned int)stream.GetI4();
+            }
+
+            break;
+
+            // texture chunk
+        case 't':
+
+            pScene->mNumTextures = numTextures;
+            if (!numTextures) {
+                break;
+            }
+            pScene->mTextures = new aiTexture *[pScene->mNumTextures];
+            // to make sure we won't crash if we leave through an exception
+            ::memset(pScene->mTextures, 0, sizeof(void *) * pScene->mNumTextures);
+            for (unsigned int i = 0; i < pScene->mNumTextures; ++i) {
+                aiTexture *tex = pScene->mTextures[i] = new aiTexture;
+
+                // skip the texture name
+                while (stream.GetI1())
+                    ;
+
+                // read texture width and height
+                tex->mWidth = (unsigned int)stream.GetI4();
+                tex->mHeight = (unsigned int)stream.GetI4();
+
+                if (!tex->mWidth || !tex->mHeight) {
+                    throw DeadlyImportError("Quick3D: Invalid texture. Width or height is zero");
+                }
+
+                unsigned int mul = tex->mWidth * tex->mHeight;
+                aiTexel *begin = tex->pcData = new aiTexel[mul];
+                aiTexel *const end = &begin[mul - 1] + 1;
+
+                for (; begin != end; ++begin) {
+                    begin->r = stream.GetI1();
+                    begin->g = stream.GetI1();
+                    begin->b = stream.GetI1();
+                    begin->a = 0xff;
+                }
+            }
+
+            break;
+
+            // scene chunk
+        case 's': {
+            // skip position and rotation
+            stream.IncPtr(12);
+
+            for (unsigned int i = 0; i < 4; ++i)
+                for (unsigned int a = 0; a < 4; ++a)
+                    pScene->mRootNode->mTransformation[i][a] = stream.GetF4();
+
+            stream.IncPtr(16);
+
+            // now setup a single camera
+            pScene->mNumCameras = 1;
+            pScene->mCameras = new aiCamera *[1];
+            aiCamera *cam = pScene->mCameras[0] = new aiCamera();
+            cam->mPosition.x = stream.GetF4();
+            cam->mPosition.y = stream.GetF4();
+            cam->mPosition.z = stream.GetF4();
+            cam->mName.Set("Q3DCamera");
+
+            // skip eye rotation for the moment
+            stream.IncPtr(12);
+
+            // read the default material color
+            fgColor.r = stream.GetF4();
+            fgColor.g = stream.GetF4();
+            fgColor.b = stream.GetF4();
+
+            // skip some unimportant properties
+            stream.IncPtr(29);
+
+            // setup a single point light with no attenuation
+            pScene->mNumLights = 1;
+            pScene->mLights = new aiLight *[1];
+            aiLight *light = pScene->mLights[0] = new aiLight();
+            light->mName.Set("Q3DLight");
+            light->mType = aiLightSource_POINT;
+
+            light->mAttenuationConstant = 1;
+            light->mAttenuationLinear = 0;
+            light->mAttenuationQuadratic = 0;
+
+            light->mColorDiffuse.r = stream.GetF4();
+            light->mColorDiffuse.g = stream.GetF4();
+            light->mColorDiffuse.b = stream.GetF4();
+
+            light->mColorSpecular = light->mColorDiffuse;
+
+            // We don't need the rest, but we need to know where this chunk ends.
+            unsigned int temp = (unsigned int)(stream.GetI4() * stream.GetI4());
+
+            // skip the background file name
+            while (stream.GetI1())
+                ;
+
+            // skip background texture data + the remaining fields
+            stream.IncPtr(temp * 3 + 20); // 4 bytes of unknown data here
+
+            // TODO
+            goto outer;
+        } break;
+
+        default:
+            throw DeadlyImportError("Quick3D: Unknown chunk");
+            break;
+        };
+    }
+outer:
+
+    // If we have no mesh loaded - break here
+    if (meshes.empty())
+        throw DeadlyImportError("Quick3D: No meshes loaded");
+
+    // If we have no materials loaded - generate a default mat
+    if (materials.empty()) {
+        ASSIMP_LOG_INFO("Quick3D: No material found, generating one");
+        materials.push_back(Material());
+        materials.back().diffuse = fgColor;
+    }
+
+    // find out which materials we'll need
+    typedef std::pair<unsigned int, unsigned int> FaceIdx;
+    typedef std::vector<FaceIdx> FaceIdxArray;
+    FaceIdxArray *fidx = new FaceIdxArray[materials.size()];
+
+    unsigned int p = 0;
+    for (std::vector<Mesh>::iterator it = meshes.begin(), end = meshes.end();
+            it != end; ++it, ++p) {
+        unsigned int q = 0;
+        for (std::vector<Face>::iterator fit = (*it).faces.begin(), fend = (*it).faces.end();
+                fit != fend; ++fit, ++q) {
+            if ((*fit).mat >= materials.size()) {
+                ASSIMP_LOG_WARN("Quick3D: Material index overflow");
+                (*fit).mat = 0;
+            }
+            if (fidx[(*fit).mat].empty()) ++pScene->mNumMeshes;
+            fidx[(*fit).mat].push_back(FaceIdx(p, q));
+        }
+    }
+    pScene->mNumMaterials = pScene->mNumMeshes;
+    pScene->mMaterials = new aiMaterial *[pScene->mNumMaterials];
+    pScene->mMeshes = new aiMesh *[pScene->mNumMaterials];
+
+    for (unsigned int i = 0, real = 0; i < (unsigned int)materials.size(); ++i) {
+        if (fidx[i].empty()) continue;
+
+        // Allocate a mesh and a material
+        aiMesh *mesh = pScene->mMeshes[real] = new aiMesh();
+        aiMaterial *mat = new aiMaterial();
+        pScene->mMaterials[real] = mat;
+
+        mesh->mMaterialIndex = real;
+
+        // Build the output material
+        Material &srcMat = materials[i];
+        mat->AddProperty(&srcMat.diffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
+        mat->AddProperty(&srcMat.specular, 1, AI_MATKEY_COLOR_SPECULAR);
+        mat->AddProperty(&srcMat.ambient, 1, AI_MATKEY_COLOR_AMBIENT);
+
+        // NOTE: Ignore transparency for the moment - it seems
+        // unclear how to interpret the data
+#if 0
+        if (!(minor > '0' && major == '3'))
+            srcMat.transparency = 1.0f - srcMat.transparency;
+        mat->AddProperty(&srcMat.transparency, 1, AI_MATKEY_OPACITY);
+#endif
+
+        // add shininess - Quick3D seems to use it ins its viewer
+        srcMat.transparency = 16.f;
+        mat->AddProperty(&srcMat.transparency, 1, AI_MATKEY_SHININESS);
+
+        int m = (int)aiShadingMode_Phong;
+        mat->AddProperty(&m, 1, AI_MATKEY_SHADING_MODEL);
+
+        if (srcMat.name.length)
+            mat->AddProperty(&srcMat.name, AI_MATKEY_NAME);
+
+        // Add a texture
+        if (srcMat.texIdx < pScene->mNumTextures || real < pScene->mNumTextures) {
+            srcMat.name.data[0] = '*';
+            srcMat.name.length = ASSIMP_itoa10(&srcMat.name.data[1], 1000,
+                    (srcMat.texIdx < pScene->mNumTextures ? srcMat.texIdx : real));
+            mat->AddProperty(&srcMat.name, AI_MATKEY_TEXTURE_DIFFUSE(0));
+        }
+
+        mesh->mNumFaces = (unsigned int)fidx[i].size();
+        aiFace *faces = mesh->mFaces = new aiFace[mesh->mNumFaces];
+
+        // Now build the output mesh. First find out how many
+        // vertices we'll need
+        for (FaceIdxArray::const_iterator it = fidx[i].begin(), end = fidx[i].end();
+                it != end; ++it) {
+            mesh->mNumVertices += (unsigned int)meshes[(*it).first].faces[(*it).second].indices.size();
+        }
+
+        aiVector3D *verts = mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+        aiVector3D *norms = mesh->mNormals = new aiVector3D[mesh->mNumVertices];
+        aiVector3D *uv = nullptr;
+        if (real < pScene->mNumTextures) {
+            uv = mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
+            mesh->mNumUVComponents[0] = 2;
+        }
+
+        // Build the final array
+        unsigned int cnt = 0;
+        for (FaceIdxArray::const_iterator it = fidx[i].begin(), end = fidx[i].end();
+                it != end; ++it, ++faces) {
+            Mesh &curMesh = meshes[(*it).first];
+            Face &face = curMesh.faces[(*it).second];
+            faces->mNumIndices = (unsigned int)face.indices.size();
+            faces->mIndices = new unsigned int[faces->mNumIndices];
+
+            aiVector3D faceNormal;
+            bool fnOK = false;
+
+            for (unsigned int n = 0; n < faces->mNumIndices; ++n, ++cnt, ++norms, ++verts) {
+                if (face.indices[n] >= curMesh.verts.size()) {
+                    ASSIMP_LOG_WARN("Quick3D: Vertex index overflow");
+                    face.indices[n] = 0;
+                }
+
+                // copy vertices
+                *verts = curMesh.verts[face.indices[n]];
+
+                if (face.indices[n] >= curMesh.normals.size() && faces->mNumIndices >= 3) {
+                    // we have no normal here - assign the face normal
+                    if (!fnOK) {
+                        const aiVector3D &pV1 = curMesh.verts[face.indices[0]];
+                        const aiVector3D &pV2 = curMesh.verts[face.indices[1]];
+                        const aiVector3D &pV3 = curMesh.verts[face.indices.size() - 1];
+                        faceNormal = (pV2 - pV1) ^ (pV3 - pV1).Normalize();
+                        fnOK = true;
+                    }
+                    *norms = faceNormal;
+                } else {
+                    *norms = curMesh.normals[face.indices[n]];
+                }
+
+                // copy texture coordinates
+                if (uv && curMesh.uv.size()) {
+                    if (curMesh.prevUVIdx != 0xffffffff && curMesh.uv.size() >= curMesh.verts.size()) // workaround
+                    {
+                        *uv = curMesh.uv[face.indices[n]];
+                    } else {
+                        if (face.uvindices[n] >= curMesh.uv.size()) {
+                            ASSIMP_LOG_WARN("Quick3D: Texture coordinate index overflow");
+                            face.uvindices[n] = 0;
+                        }
+                        *uv = curMesh.uv[face.uvindices[n]];
+                    }
+                    uv->y = 1.f - uv->y;
+                    ++uv;
+                }
+
+                // setup the new vertex index
+                faces->mIndices[n] = cnt;
+            }
+        }
+        ++real;
+    }
+
+    // Delete our nice helper array
+    delete[] fidx;
+
+    // Now we need to attach the meshes to the root node of the scene
+    pScene->mRootNode->mNumMeshes = pScene->mNumMeshes;
+    pScene->mRootNode->mMeshes = new unsigned int[pScene->mNumMeshes];
+    for (unsigned int i = 0; i < pScene->mNumMeshes; ++i)
+        pScene->mRootNode->mMeshes[i] = i;
+
+    /*pScene->mRootNode->mTransformation *= aiMatrix4x4(
+        1.f, 0.f, 0.f, 0.f,
+        0.f, -1.f,0.f, 0.f,
+        0.f, 0.f, 1.f, 0.f,
+        0.f, 0.f, 0.f, 1.f);*/
+
+    // Add cameras and light sources to the scene root node
+    pScene->mRootNode->mNumChildren = pScene->mNumLights + pScene->mNumCameras;
+    if (pScene->mRootNode->mNumChildren) {
+        pScene->mRootNode->mChildren = new aiNode *[pScene->mRootNode->mNumChildren];
+
+        // the light source
+        aiNode *nd = pScene->mRootNode->mChildren[0] = new aiNode();
+        nd->mParent = pScene->mRootNode;
+        nd->mName.Set("Q3DLight");
+        nd->mTransformation = pScene->mRootNode->mTransformation;
+        nd->mTransformation.Inverse();
+
+        // camera
+        nd = pScene->mRootNode->mChildren[1] = new aiNode();
+        nd->mParent = pScene->mRootNode;
+        nd->mName.Set("Q3DCamera");
+        nd->mTransformation = pScene->mRootNode->mChildren[0]->mTransformation;
+    }
+}
+
+#endif // !! ASSIMP_BUILD_NO_Q3D_IMPORTER
diff --git a/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.h b/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.h
new file mode 100644
index 0000000..54af86d
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Q3D/Q3DLoader.h
@@ -0,0 +1,116 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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  Q3DLoader.h
+ *  @brief Declaration of the Q3D importer class.
+ */
+#pragma once
+#ifndef AI_Q3DLOADER_H_INCLUDED
+#define AI_Q3DLOADER_H_INCLUDED
+
+#include <assimp/BaseImporter.h>
+#include <assimp/types.h>
+#include <vector>
+#include <cstdint>
+
+namespace Assimp    {
+
+// ---------------------------------------------------------------------------
+/** Importer class for the Quick3D Object and Scene formats.
+*/
+class Q3DImporter : public BaseImporter {
+public:
+    Q3DImporter();
+    ~Q3DImporter() override;
+
+    // -------------------------------------------------------------------
+    /** Returns whether the class can handle the format of the given file.
+    * See BaseImporter::CanRead() for details.  */
+    bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
+        bool checkSig) const override;
+
+protected:
+    // -------------------------------------------------------------------
+    /** Return importer meta information.
+     * See #BaseImporter::GetInfo for the details
+     */
+    const aiImporterDesc* GetInfo () const override;
+
+    // -------------------------------------------------------------------
+    /** Imports the given file into the given scene structure.
+    * See BaseImporter::InternReadFile() for details
+    */
+    void InternReadFile( const std::string& pFile, aiScene* pScene,
+        IOSystem* pIOHandler) override;
+
+private:
+    struct Material {
+        Material() : diffuse(0.6f,0.6f,0.6f), transparency(0.f), texIdx(UINT_MAX) {
+            // empty
+        }
+
+        aiString name;
+        aiColor3D ambient, diffuse, specular;
+        float transparency;
+        unsigned int texIdx;
+    };
+
+    struct Face {
+        explicit Face(unsigned int s) : indices(s), uvindices(s), mat(0) {
+            // empty
+        }
+
+        std::vector<unsigned int> indices;
+        std::vector<unsigned int> uvindices;
+        unsigned int mat;
+    };
+
+    struct Mesh {
+        std::vector<aiVector3D> verts;
+        std::vector<aiVector3D> normals;
+        std::vector<aiVector3D> uv;
+        std::vector<Face>       faces;
+        uint32_t prevUVIdx;
+    };
+};
+
+} // end of namespace Assimp
+
+#endif // AI_Q3DIMPORTER_H_IN