switch to tinyobj and nanovg from assimp and cairo

6 files changed, 0 insertions, 3816 deletions

diff --git a/libs/assimp/code/AssetLib/3DS/3DSConverter.cpp b/libs/assimp/code/AssetLib/3DS/3DSConverter.cpp
deleted file mode 100644
index 5a01429..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSConverter.cpp
+++ /dev/null
@@ -1,807 +0,0 @@
-/*
----------------------------------------------------------------------------
-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 Implementation of the 3ds importer class */
-
-#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
-
-// internal headers
-#include "3DSLoader.h"
-#include "Common/TargetAnimation.h"
-#include <assimp/StringComparison.h>
-#include <assimp/scene.h>
-#include <assimp/DefaultLogger.hpp>
-#include <cctype>
-#include <memory>
-
-using namespace Assimp;
-
-static const unsigned int NotSet = 0xcdcdcdcd;
-
-// ------------------------------------------------------------------------------------------------
-// Setup final material indices, generae a default material if necessary
-void Discreet3DSImporter::ReplaceDefaultMaterial() {
-    // Try to find an existing material that matches the
-    // typical default material setting:
-    // - no textures
-    // - diffuse color (in grey!)
-    // NOTE: This is here to workaround the fact that some
-    // exporters are writing a default material, too.
-    unsigned int idx(NotSet);
-    for (unsigned int i = 0; i < mScene->mMaterials.size(); ++i) {
-        std::string s = mScene->mMaterials[i].mName;
-        for (char & it : s) {
-            it = static_cast<char>(::tolower(static_cast<unsigned char>(it)));
-        }
-
-        if (std::string::npos == s.find("default")) continue;
-
-        if (mScene->mMaterials[i].mDiffuse.r !=
-                        mScene->mMaterials[i].mDiffuse.g ||
-                mScene->mMaterials[i].mDiffuse.r !=
-                        mScene->mMaterials[i].mDiffuse.b) continue;
-
-        if (ContainsTextures(i)) {
-            continue;
-        }
-        idx = i;
-    }
-    if (NotSet == idx) {
-        idx = (unsigned int)mScene->mMaterials.size();
-    }
-
-    // now iterate through all meshes and through all faces and
-    // find all faces that are using the default material
-    unsigned int cnt = 0;
-    for (std::vector<D3DS::Mesh>::iterator
-                    i = mScene->mMeshes.begin();
-            i != mScene->mMeshes.end(); ++i) {
-        for (std::vector<unsigned int>::iterator
-                        a = (*i).mFaceMaterials.begin();
-                a != (*i).mFaceMaterials.end(); ++a) {
-            // NOTE: The additional check seems to be necessary,
-            // some exporters seem to generate invalid data here
-            if (0xcdcdcdcd == (*a)) {
-                (*a) = idx;
-                ++cnt;
-            } else if ((*a) >= mScene->mMaterials.size()) {
-                (*a) = idx;
-                ASSIMP_LOG_WARN("Material index overflow in 3DS file. Using default material");
-                ++cnt;
-            }
-        }
-    }
-    if (cnt && idx == mScene->mMaterials.size()) {
-        // We need to create our own default material
-        D3DS::Material sMat("%%%DEFAULT");
-        sMat.mDiffuse = aiColor3D(0.3f, 0.3f, 0.3f);
-        mScene->mMaterials.push_back(sMat);
-
-        ASSIMP_LOG_INFO("3DS: Generating default material");
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Check whether all indices are valid. Otherwise we'd crash before the validation step is reached
-void Discreet3DSImporter::CheckIndices(D3DS::Mesh &sMesh) {
-    for (std::vector<D3DS::Face>::iterator i = sMesh.mFaces.begin(); i != sMesh.mFaces.end(); ++i) {
-        // check whether all indices are in range
-        for (unsigned int a = 0; a < 3; ++a) {
-            if ((*i).mIndices[a] >= sMesh.mPositions.size()) {
-                ASSIMP_LOG_WARN("3DS: Vertex index overflow)");
-                (*i).mIndices[a] = (uint32_t)sMesh.mPositions.size() - 1;
-            }
-            if (!sMesh.mTexCoords.empty() && (*i).mIndices[a] >= sMesh.mTexCoords.size()) {
-                ASSIMP_LOG_WARN("3DS: Texture coordinate index overflow)");
-                (*i).mIndices[a] = (uint32_t)sMesh.mTexCoords.size() - 1;
-            }
-        }
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Generate out unique verbose format representation
-void Discreet3DSImporter::MakeUnique(D3DS::Mesh &sMesh) {
-    // TODO: really necessary? I don't think. Just a waste of memory and time
-    // to do it now in a separate buffer.
-
-    // Allocate output storage
-    std::vector<aiVector3D> vNew(sMesh.mFaces.size() * 3);
-    std::vector<aiVector3D> vNew2;
-    if (sMesh.mTexCoords.size())
-        vNew2.resize(sMesh.mFaces.size() * 3);
-
-    for (unsigned int i = 0, base = 0; i < sMesh.mFaces.size(); ++i) {
-        D3DS::Face &face = sMesh.mFaces[i];
-
-        // Positions
-        for (unsigned int a = 0; a < 3; ++a, ++base) {
-            vNew[base] = sMesh.mPositions[face.mIndices[a]];
-            if (sMesh.mTexCoords.size())
-                vNew2[base] = sMesh.mTexCoords[face.mIndices[a]];
-
-            face.mIndices[a] = base;
-        }
-    }
-    sMesh.mPositions = vNew;
-    sMesh.mTexCoords = vNew2;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Convert a 3DS texture to texture keys in an aiMaterial
-void CopyTexture(aiMaterial &mat, D3DS::Texture &texture, aiTextureType type) {
-    // Setup the texture name
-    aiString tex;
-    tex.Set(texture.mMapName);
-    mat.AddProperty(&tex, AI_MATKEY_TEXTURE(type, 0));
-
-    // Setup the texture blend factor
-    if (is_not_qnan(texture.mTextureBlend))
-        mat.AddProperty<ai_real>(&texture.mTextureBlend, 1, AI_MATKEY_TEXBLEND(type, 0));
-
-    // Setup the texture mapping mode
-    int mapMode = static_cast<int>(texture.mMapMode);
-    mat.AddProperty<int>(&mapMode, 1, AI_MATKEY_MAPPINGMODE_U(type, 0));
-    mat.AddProperty<int>(&mapMode, 1, AI_MATKEY_MAPPINGMODE_V(type, 0));
-
-    // Mirroring - double the scaling values
-    // FIXME: this is not really correct ...
-    if (texture.mMapMode == aiTextureMapMode_Mirror) {
-        texture.mScaleU *= 2.0;
-        texture.mScaleV *= 2.0;
-        texture.mOffsetU /= 2.0;
-        texture.mOffsetV /= 2.0;
-    }
-
-    // Setup texture UV transformations
-    mat.AddProperty<ai_real>(&texture.mOffsetU, 5, AI_MATKEY_UVTRANSFORM(type, 0));
-}
-
-// ------------------------------------------------------------------------------------------------
-// Convert a 3DS material to an aiMaterial
-void Discreet3DSImporter::ConvertMaterial(D3DS::Material &oldMat,
-        aiMaterial &mat) {
-    // NOTE: Pass the background image to the viewer by bypassing the
-    // material system. This is an evil hack, never do it again!
-    if (0 != mBackgroundImage.length() && bHasBG) {
-        aiString tex;
-        tex.Set(mBackgroundImage);
-        mat.AddProperty(&tex, AI_MATKEY_GLOBAL_BACKGROUND_IMAGE);
-
-        // Be sure this is only done for the first material
-        mBackgroundImage = std::string();
-    }
-
-    // At first add the base ambient color of the scene to the material
-    oldMat.mAmbient.r += mClrAmbient.r;
-    oldMat.mAmbient.g += mClrAmbient.g;
-    oldMat.mAmbient.b += mClrAmbient.b;
-
-    aiString name;
-    name.Set(oldMat.mName);
-    mat.AddProperty(&name, AI_MATKEY_NAME);
-
-    // Material colors
-    mat.AddProperty(&oldMat.mAmbient, 1, AI_MATKEY_COLOR_AMBIENT);
-    mat.AddProperty(&oldMat.mDiffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
-    mat.AddProperty(&oldMat.mSpecular, 1, AI_MATKEY_COLOR_SPECULAR);
-    mat.AddProperty(&oldMat.mEmissive, 1, AI_MATKEY_COLOR_EMISSIVE);
-
-    // Phong shininess and shininess strength
-    if (D3DS::Discreet3DS::Phong == oldMat.mShading ||
-            D3DS::Discreet3DS::Metal == oldMat.mShading) {
-        if (!oldMat.mSpecularExponent || !oldMat.mShininessStrength) {
-            oldMat.mShading = D3DS::Discreet3DS::Gouraud;
-        } else {
-            mat.AddProperty(&oldMat.mSpecularExponent, 1, AI_MATKEY_SHININESS);
-            mat.AddProperty(&oldMat.mShininessStrength, 1, AI_MATKEY_SHININESS_STRENGTH);
-        }
-    }
-
-    // Opacity
-    mat.AddProperty<ai_real>(&oldMat.mTransparency, 1, AI_MATKEY_OPACITY);
-
-    // Bump height scaling
-    mat.AddProperty<ai_real>(&oldMat.mBumpHeight, 1, AI_MATKEY_BUMPSCALING);
-
-    // Two sided rendering?
-    if (oldMat.mTwoSided) {
-        int i = 1;
-        mat.AddProperty<int>(&i, 1, AI_MATKEY_TWOSIDED);
-    }
-
-    // Shading mode
-    aiShadingMode eShading = aiShadingMode_NoShading;
-    switch (oldMat.mShading) {
-    case D3DS::Discreet3DS::Flat:
-        eShading = aiShadingMode_Flat;
-        break;
-
-    // I don't know what "Wire" shading should be,
-    // assume it is simple lambertian diffuse shading
-    case D3DS::Discreet3DS::Wire: {
-        // Set the wireframe flag
-        unsigned int iWire = 1;
-        mat.AddProperty<int>((int *)&iWire, 1, AI_MATKEY_ENABLE_WIREFRAME);
-    }
-
-    case D3DS::Discreet3DS::Gouraud:
-        eShading = aiShadingMode_Gouraud;
-        break;
-
-    // assume cook-torrance shading for metals.
-    case D3DS::Discreet3DS::Phong:
-        eShading = aiShadingMode_Phong;
-        break;
-
-    case D3DS::Discreet3DS::Metal:
-        eShading = aiShadingMode_CookTorrance;
-        break;
-
-        // FIX to workaround a warning with GCC 4 who complained
-        // about a missing case Blinn: here - Blinn isn't a valid
-        // value in the 3DS Loader, it is just needed for ASE
-    case D3DS::Discreet3DS::Blinn:
-        eShading = aiShadingMode_Blinn;
-        break;
-    }
-    int eShading_ = static_cast<int>(eShading);
-    mat.AddProperty<int>(&eShading_, 1, AI_MATKEY_SHADING_MODEL);
-
-    // DIFFUSE texture
-    if (oldMat.sTexDiffuse.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexDiffuse, aiTextureType_DIFFUSE);
-
-    // SPECULAR texture
-    if (oldMat.sTexSpecular.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexSpecular, aiTextureType_SPECULAR);
-
-    // OPACITY texture
-    if (oldMat.sTexOpacity.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexOpacity, aiTextureType_OPACITY);
-
-    // EMISSIVE texture
-    if (oldMat.sTexEmissive.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexEmissive, aiTextureType_EMISSIVE);
-
-    // BUMP texture
-    if (oldMat.sTexBump.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexBump, aiTextureType_HEIGHT);
-
-    // SHININESS texture
-    if (oldMat.sTexShininess.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexShininess, aiTextureType_SHININESS);
-
-    // REFLECTION texture
-    if (oldMat.sTexReflective.mMapName.length() > 0)
-        CopyTexture(mat, oldMat.sTexReflective, aiTextureType_REFLECTION);
-
-    // Store the name of the material itself, too
-    if (oldMat.mName.length()) {
-        aiString tex;
-        tex.Set(oldMat.mName);
-        mat.AddProperty(&tex, AI_MATKEY_NAME);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Split meshes by their materials and generate output aiMesh'es
-void Discreet3DSImporter::ConvertMeshes(aiScene *pcOut) {
-    std::vector<aiMesh *> avOutMeshes;
-    avOutMeshes.reserve(mScene->mMeshes.size() * 2);
-
-    unsigned int iFaceCnt = 0, num = 0;
-    aiString name;
-
-    // we need to split all meshes by their materials
-    for (std::vector<D3DS::Mesh>::iterator i = mScene->mMeshes.begin(); i != mScene->mMeshes.end(); ++i) {
-        std::unique_ptr<std::vector<unsigned int>[]> aiSplit(new std::vector<unsigned int>[mScene->mMaterials.size()]);
-
-        name.length = ASSIMP_itoa10(name.data, num++);
-
-        unsigned int iNum = 0;
-        for (std::vector<unsigned int>::const_iterator a = (*i).mFaceMaterials.begin();
-                a != (*i).mFaceMaterials.end(); ++a, ++iNum) {
-            aiSplit[*a].push_back(iNum);
-        }
-        // now generate submeshes
-        for (unsigned int p = 0; p < mScene->mMaterials.size(); ++p) {
-            if (aiSplit[p].empty()) {
-                continue;
-            }
-            aiMesh *meshOut = new aiMesh();
-            meshOut->mName = name;
-            meshOut->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
-
-            // be sure to setup the correct material index
-            meshOut->mMaterialIndex = p;
-
-            // use the color data as temporary storage
-            meshOut->mColors[0] = (aiColor4D *)(&*i);
-            avOutMeshes.push_back(meshOut);
-
-            // convert vertices
-            meshOut->mNumFaces = (unsigned int)aiSplit[p].size();
-            meshOut->mNumVertices = meshOut->mNumFaces * 3;
-
-            // allocate enough storage for faces
-            meshOut->mFaces = new aiFace[meshOut->mNumFaces];
-            iFaceCnt += meshOut->mNumFaces;
-
-            meshOut->mVertices = new aiVector3D[meshOut->mNumVertices];
-            meshOut->mNormals = new aiVector3D[meshOut->mNumVertices];
-            if ((*i).mTexCoords.size()) {
-                meshOut->mTextureCoords[0] = new aiVector3D[meshOut->mNumVertices];
-            }
-            for (unsigned int q = 0, base = 0; q < aiSplit[p].size(); ++q) {
-                unsigned int index = aiSplit[p][q];
-                aiFace &face = meshOut->mFaces[q];
-
-                face.mIndices = new unsigned int[3];
-                face.mNumIndices = 3;
-
-                for (unsigned int a = 0; a < 3; ++a, ++base) {
-                    unsigned int idx = (*i).mFaces[index].mIndices[a];
-                    meshOut->mVertices[base] = (*i).mPositions[idx];
-                    meshOut->mNormals[base] = (*i).mNormals[idx];
-
-                    if ((*i).mTexCoords.size())
-                        meshOut->mTextureCoords[0][base] = (*i).mTexCoords[idx];
-
-                    face.mIndices[a] = base;
-                }
-            }
-        }
-    }
-
-    // Copy them to the output array
-    pcOut->mNumMeshes = (unsigned int)avOutMeshes.size();
-    pcOut->mMeshes = new aiMesh *[pcOut->mNumMeshes]();
-    for (unsigned int a = 0; a < pcOut->mNumMeshes; ++a) {
-        pcOut->mMeshes[a] = avOutMeshes[a];
-    }
-
-    // We should have at least one face here
-    if (!iFaceCnt) {
-        throw DeadlyImportError("No faces loaded. The mesh is empty");
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Add a node to the scenegraph and setup its final transformation
-void Discreet3DSImporter::AddNodeToGraph(aiScene *pcSOut, aiNode *pcOut,
-        D3DS::Node *pcIn, aiMatrix4x4 & /*absTrafo*/) {
-    std::vector<unsigned int> iArray;
-    iArray.reserve(3);
-
-    aiMatrix4x4 abs;
-
-    // Find all meshes with the same name as the node
-    for (unsigned int a = 0; a < pcSOut->mNumMeshes; ++a) {
-        const D3DS::Mesh *pcMesh = (const D3DS::Mesh *)pcSOut->mMeshes[a]->mColors[0];
-        ai_assert(nullptr != pcMesh);
-
-        if (pcIn->mName == pcMesh->mName)
-            iArray.push_back(a);
-    }
-    if (!iArray.empty()) {
-        // The matrix should be identical for all meshes with the
-        // same name. It HAS to be identical for all meshes .....
-        D3DS::Mesh *imesh = ((D3DS::Mesh *)pcSOut->mMeshes[iArray[0]]->mColors[0]);
-
-        // Compute the inverse of the transformation matrix to move the
-        // vertices back to their relative and local space
-        aiMatrix4x4 mInv = imesh->mMat, mInvTransposed = imesh->mMat;
-        mInv.Inverse();
-        mInvTransposed.Transpose();
-        aiVector3D pivot = pcIn->vPivot;
-
-        pcOut->mNumMeshes = (unsigned int)iArray.size();
-        pcOut->mMeshes = new unsigned int[iArray.size()];
-        for (unsigned int i = 0; i < iArray.size(); ++i) {
-            const unsigned int iIndex = iArray[i];
-            aiMesh *const mesh = pcSOut->mMeshes[iIndex];
-
-            if (mesh->mColors[1] == nullptr) {
-                // Transform the vertices back into their local space
-                // fixme: consider computing normals after this, so we don't need to transform them
-                const aiVector3D *const pvEnd = mesh->mVertices + mesh->mNumVertices;
-                aiVector3D *pvCurrent = mesh->mVertices, *t2 = mesh->mNormals;
-
-                for (; pvCurrent != pvEnd; ++pvCurrent, ++t2) {
-                    *pvCurrent = mInv * (*pvCurrent);
-                    *t2 = mInvTransposed * (*t2);
-                }
-
-                // Handle negative transformation matrix determinant -> invert vertex x
-                if (imesh->mMat.Determinant() < 0.0f) {
-                    /* we *must* have normals */
-                    for (pvCurrent = mesh->mVertices, t2 = mesh->mNormals; pvCurrent != pvEnd; ++pvCurrent, ++t2) {
-                        pvCurrent->x *= -1.f;
-                        t2->x *= -1.f;
-                    }
-                    ASSIMP_LOG_INFO("3DS: Flipping mesh X-Axis");
-                }
-
-                // Handle pivot point
-                if (pivot.x || pivot.y || pivot.z) {
-                    for (pvCurrent = mesh->mVertices; pvCurrent != pvEnd; ++pvCurrent) {
-                        *pvCurrent -= pivot;
-                    }
-                }
-
-                mesh->mColors[1] = (aiColor4D *)1;
-            } else
-                mesh->mColors[1] = (aiColor4D *)1;
-
-            // Setup the mesh index
-            pcOut->mMeshes[i] = iIndex;
-        }
-    }
-
-    // Setup the name of the node
-    // First instance keeps its name otherwise something might break, all others will be postfixed with their instance number
-    if (pcIn->mInstanceNumber > 1) {
-        char tmp[12];
-        ASSIMP_itoa10(tmp, pcIn->mInstanceNumber);
-        std::string tempStr = pcIn->mName + "_inst_";
-        tempStr += tmp;
-        pcOut->mName.Set(tempStr);
-    } else
-        pcOut->mName.Set(pcIn->mName);
-
-    // Now build the transformation matrix of the node
-    // ROTATION
-    if (pcIn->aRotationKeys.size()) {
-
-        // FIX to get to Assimp's quaternion conventions
-        for (std::vector<aiQuatKey>::iterator it = pcIn->aRotationKeys.begin(); it != pcIn->aRotationKeys.end(); ++it) {
-            (*it).mValue.w *= -1.f;
-        }
-
-        pcOut->mTransformation = aiMatrix4x4(pcIn->aRotationKeys[0].mValue.GetMatrix());
-    } else if (pcIn->aCameraRollKeys.size()) {
-        aiMatrix4x4::RotationZ(AI_DEG_TO_RAD(-pcIn->aCameraRollKeys[0].mValue),
-                pcOut->mTransformation);
-    }
-
-    // SCALING
-    aiMatrix4x4 &m = pcOut->mTransformation;
-    if (pcIn->aScalingKeys.size()) {
-        const aiVector3D &v = pcIn->aScalingKeys[0].mValue;
-        m.a1 *= v.x;
-        m.b1 *= v.x;
-        m.c1 *= v.x;
-        m.a2 *= v.y;
-        m.b2 *= v.y;
-        m.c2 *= v.y;
-        m.a3 *= v.z;
-        m.b3 *= v.z;
-        m.c3 *= v.z;
-    }
-
-    // TRANSLATION
-    if (pcIn->aPositionKeys.size()) {
-        const aiVector3D &v = pcIn->aPositionKeys[0].mValue;
-        m.a4 += v.x;
-        m.b4 += v.y;
-        m.c4 += v.z;
-    }
-
-    // Generate animation channels for the node
-    if (pcIn->aPositionKeys.size() > 1 || pcIn->aRotationKeys.size() > 1 ||
-            pcIn->aScalingKeys.size() > 1 || pcIn->aCameraRollKeys.size() > 1 ||
-            pcIn->aTargetPositionKeys.size() > 1) {
-        aiAnimation *anim = pcSOut->mAnimations[0];
-        ai_assert(nullptr != anim);
-
-        if (pcIn->aCameraRollKeys.size() > 1) {
-            ASSIMP_LOG_VERBOSE_DEBUG("3DS: Converting camera roll track ...");
-
-            // Camera roll keys - in fact they're just rotations
-            // around the camera's z axis. The angles are given
-            // in degrees (and they're clockwise).
-            pcIn->aRotationKeys.resize(pcIn->aCameraRollKeys.size());
-            for (unsigned int i = 0; i < pcIn->aCameraRollKeys.size(); ++i) {
-                aiQuatKey &q = pcIn->aRotationKeys[i];
-                aiFloatKey &f = pcIn->aCameraRollKeys[i];
-
-                q.mTime = f.mTime;
-
-                // FIX to get to Assimp quaternion conventions
-                q.mValue = aiQuaternion(0.f, 0.f, AI_DEG_TO_RAD(/*-*/ f.mValue));
-            }
-        }
-#if 0
-        if (pcIn->aTargetPositionKeys.size() > 1)
-        {
-            ASSIMP_LOG_VERBOSE_DEBUG("3DS: Converting target track ...");
-
-            // Camera or spot light - need to convert the separate
-            // target position channel to our representation
-            TargetAnimationHelper helper;
-
-            if (pcIn->aPositionKeys.empty())
-            {
-                // We can just pass zero here ...
-                helper.SetFixedMainAnimationChannel(aiVector3D());
-            }
-            else  helper.SetMainAnimationChannel(&pcIn->aPositionKeys);
-            helper.SetTargetAnimationChannel(&pcIn->aTargetPositionKeys);
-
-            // Do the conversion
-            std::vector<aiVectorKey> distanceTrack;
-            helper.Process(&distanceTrack);
-
-            // Now add a new node as child, name it <ourName>.Target
-            // and assign the distance track to it. This is that the
-            // information where the target is and how it moves is
-            // not lost
-            D3DS::Node* nd = new D3DS::Node();
-            pcIn->push_back(nd);
-
-            nd->mName = pcIn->mName + ".Target";
-
-            aiNodeAnim* nda = anim->mChannels[anim->mNumChannels++] = new aiNodeAnim();
-            nda->mNodeName.Set(nd->mName);
-
-            nda->mNumPositionKeys = (unsigned int)distanceTrack.size();
-            nda->mPositionKeys = new aiVectorKey[nda->mNumPositionKeys];
-            ::memcpy(nda->mPositionKeys,&distanceTrack[0],
-                sizeof(aiVectorKey)*nda->mNumPositionKeys);
-        }
-#endif
-
-        // Cameras or lights define their transformation in their parent node and in the
-        // corresponding light or camera chunks. However, we read and process the latter
-        // to to be able to return valid cameras/lights even if no scenegraph is given.
-        for (unsigned int n = 0; n < pcSOut->mNumCameras; ++n) {
-            if (pcSOut->mCameras[n]->mName == pcOut->mName) {
-                pcSOut->mCameras[n]->mLookAt = aiVector3D(0.f, 0.f, 1.f);
-            }
-        }
-        for (unsigned int n = 0; n < pcSOut->mNumLights; ++n) {
-            if (pcSOut->mLights[n]->mName == pcOut->mName) {
-                pcSOut->mLights[n]->mDirection = aiVector3D(0.f, 0.f, 1.f);
-            }
-        }
-
-        // Allocate a new node anim and setup its name
-        aiNodeAnim *nda = anim->mChannels[anim->mNumChannels++] = new aiNodeAnim();
-        nda->mNodeName.Set(pcIn->mName);
-
-        // POSITION keys
-        if (pcIn->aPositionKeys.size() > 0) {
-            nda->mNumPositionKeys = (unsigned int)pcIn->aPositionKeys.size();
-            nda->mPositionKeys = new aiVectorKey[nda->mNumPositionKeys];
-            ::memcpy(nda->mPositionKeys, &pcIn->aPositionKeys[0],
-                    sizeof(aiVectorKey) * nda->mNumPositionKeys);
-        }
-
-        // ROTATION keys
-        if (pcIn->aRotationKeys.size() > 0) {
-            nda->mNumRotationKeys = (unsigned int)pcIn->aRotationKeys.size();
-            nda->mRotationKeys = new aiQuatKey[nda->mNumRotationKeys];
-
-            // Rotations are quaternion offsets
-            aiQuaternion abs1;
-            for (unsigned int n = 0; n < nda->mNumRotationKeys; ++n) {
-                const aiQuatKey &q = pcIn->aRotationKeys[n];
-
-                abs1 = (n ? abs1 * q.mValue : q.mValue);
-                nda->mRotationKeys[n].mTime = q.mTime;
-                nda->mRotationKeys[n].mValue = abs1.Normalize();
-            }
-        }
-
-        // SCALING keys
-        if (pcIn->aScalingKeys.size() > 0) {
-            nda->mNumScalingKeys = (unsigned int)pcIn->aScalingKeys.size();
-            nda->mScalingKeys = new aiVectorKey[nda->mNumScalingKeys];
-            ::memcpy(nda->mScalingKeys, &pcIn->aScalingKeys[0],
-                    sizeof(aiVectorKey) * nda->mNumScalingKeys);
-        }
-    }
-
-    // Allocate storage for children
-    pcOut->mNumChildren = (unsigned int)pcIn->mChildren.size();
-    pcOut->mChildren = new aiNode *[pcIn->mChildren.size()];
-
-    // Recursively process all children
-    const unsigned int size = static_cast<unsigned int>(pcIn->mChildren.size());
-    for (unsigned int i = 0; i < size; ++i) {
-        pcOut->mChildren[i] = new aiNode();
-        pcOut->mChildren[i]->mParent = pcOut;
-        AddNodeToGraph(pcSOut, pcOut->mChildren[i], pcIn->mChildren[i], abs);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Find out how many node animation channels we'll have finally
-void CountTracks(D3DS::Node *node, unsigned int &cnt) {
-    //////////////////////////////////////////////////////////////////////////////
-    // We will never generate more than one channel for a node, so
-    // this is rather easy here.
-
-    if (node->aPositionKeys.size() > 1 || node->aRotationKeys.size() > 1 ||
-            node->aScalingKeys.size() > 1 || node->aCameraRollKeys.size() > 1 ||
-            node->aTargetPositionKeys.size() > 1) {
-        ++cnt;
-
-        // account for the additional channel for the camera/spotlight target position
-        if (node->aTargetPositionKeys.size() > 1) ++cnt;
-    }
-
-    // Recursively process all children
-    for (unsigned int i = 0; i < node->mChildren.size(); ++i)
-        CountTracks(node->mChildren[i], cnt);
-}
-
-// ------------------------------------------------------------------------------------------------
-// Generate the output node graph
-void Discreet3DSImporter::GenerateNodeGraph(aiScene *pcOut) {
-    pcOut->mRootNode = new aiNode();
-    if (0 == mRootNode->mChildren.size()) {
-        //////////////////////////////////////////////////////////////////////////////
-        // It seems the file is so messed up that it has not even a hierarchy.
-        // generate a flat hiearachy which looks like this:
-        //
-        //                ROOT_NODE
-        //                   |
-        //   ----------------------------------------
-        //   |       |       |            |         |
-        // MESH_0  MESH_1  MESH_2  ...  MESH_N    CAMERA_0 ....
-        //
-        ASSIMP_LOG_WARN("No hierarchy information has been found in the file. ");
-
-        pcOut->mRootNode->mNumChildren = pcOut->mNumMeshes +
-                                         static_cast<unsigned int>(mScene->mCameras.size() + mScene->mLights.size());
-
-        pcOut->mRootNode->mChildren = new aiNode *[pcOut->mRootNode->mNumChildren];
-        pcOut->mRootNode->mName.Set("<3DSDummyRoot>");
-
-        // Build dummy nodes for all meshes
-        unsigned int a = 0;
-        for (unsigned int i = 0; i < pcOut->mNumMeshes; ++i, ++a) {
-            aiNode *pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
-            pcNode->mParent = pcOut->mRootNode;
-            pcNode->mMeshes = new unsigned int[1];
-            pcNode->mMeshes[0] = i;
-            pcNode->mNumMeshes = 1;
-
-            // Build a name for the node
-            pcNode->mName.length = ai_snprintf(pcNode->mName.data, MAXLEN, "3DSMesh_%u", i);
-        }
-
-        // Build dummy nodes for all cameras
-        for (unsigned int i = 0; i < (unsigned int)mScene->mCameras.size(); ++i, ++a) {
-            aiNode *pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
-            pcNode->mParent = pcOut->mRootNode;
-
-            // Build a name for the node
-            pcNode->mName = mScene->mCameras[i]->mName;
-        }
-
-        // Build dummy nodes for all lights
-        for (unsigned int i = 0; i < (unsigned int)mScene->mLights.size(); ++i, ++a) {
-            aiNode *pcNode = pcOut->mRootNode->mChildren[a] = new aiNode();
-            pcNode->mParent = pcOut->mRootNode;
-
-            // Build a name for the node
-            pcNode->mName = mScene->mLights[i]->mName;
-        }
-    } else {
-        // First of all: find out how many scaling, rotation and translation
-        // animation tracks we'll have afterwards
-        unsigned int numChannel = 0;
-        CountTracks(mRootNode, numChannel);
-
-        if (numChannel) {
-            // Allocate a primary animation channel
-            pcOut->mNumAnimations = 1;
-            pcOut->mAnimations = new aiAnimation *[1];
-            aiAnimation *anim = pcOut->mAnimations[0] = new aiAnimation();
-
-            anim->mName.Set("3DSMasterAnim");
-
-            // Allocate enough storage for all node animation channels,
-            // but don't set the mNumChannels member - we'll use it to
-            // index into the array
-            anim->mChannels = new aiNodeAnim *[numChannel];
-        }
-
-        aiMatrix4x4 m;
-        AddNodeToGraph(pcOut, pcOut->mRootNode, mRootNode, m);
-    }
-
-    // We used the first and second vertex color set to store some temporary values so we need to cleanup here
-    for (unsigned int a = 0; a < pcOut->mNumMeshes; ++a) {
-        pcOut->mMeshes[a]->mColors[0] = nullptr;
-        pcOut->mMeshes[a]->mColors[1] = nullptr;
-    }
-
-    pcOut->mRootNode->mTransformation = aiMatrix4x4(
-                                                1.f, 0.f, 0.f, 0.f,
-                                                0.f, 0.f, 1.f, 0.f,
-                                                0.f, -1.f, 0.f, 0.f,
-                                                0.f, 0.f, 0.f, 1.f) *
-                                        pcOut->mRootNode->mTransformation;
-
-    // If the root node is unnamed name it "<3DSRoot>"
-    if (::strstr(pcOut->mRootNode->mName.data, "UNNAMED") ||
-            (pcOut->mRootNode->mName.data[0] == '$' && pcOut->mRootNode->mName.data[1] == '$')) {
-        pcOut->mRootNode->mName.Set("<3DSRoot>");
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Convert all meshes in the scene and generate the final output scene.
-void Discreet3DSImporter::ConvertScene(aiScene *pcOut) {
-    // Allocate enough storage for all output materials
-    pcOut->mNumMaterials = (unsigned int)mScene->mMaterials.size();
-    pcOut->mMaterials = new aiMaterial *[pcOut->mNumMaterials];
-
-    //  ... and convert the 3DS materials to aiMaterial's
-    for (unsigned int i = 0; i < pcOut->mNumMaterials; ++i) {
-        aiMaterial *pcNew = new aiMaterial();
-        ConvertMaterial(mScene->mMaterials[i], *pcNew);
-        pcOut->mMaterials[i] = pcNew;
-    }
-
-    // Generate the output mesh list
-    ConvertMeshes(pcOut);
-
-    // Now copy all light sources to the output scene
-    pcOut->mNumLights = (unsigned int)mScene->mLights.size();
-    if (pcOut->mNumLights) {
-        pcOut->mLights = new aiLight *[pcOut->mNumLights];
-        ::memcpy(pcOut->mLights, &mScene->mLights[0], sizeof(void *) * pcOut->mNumLights);
-    }
-
-    // Now copy all cameras to the output scene
-    pcOut->mNumCameras = (unsigned int)mScene->mCameras.size();
-    if (pcOut->mNumCameras) {
-        pcOut->mCameras = new aiCamera *[pcOut->mNumCameras];
-        ::memcpy(pcOut->mCameras, &mScene->mCameras[0], sizeof(void *) * pcOut->mNumCameras);
-    }
-}
-
-#endif // !! ASSIMP_BUILD_NO_3DS_IMPORTER
diff --git a/libs/assimp/code/AssetLib/3DS/3DSExporter.cpp b/libs/assimp/code/AssetLib/3DS/3DSExporter.cpp
deleted file mode 100644
index 71588f9..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSExporter.cpp
+++ /dev/null
@@ -1,584 +0,0 @@
-/*
-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.
-
-----------------------------------------------------------------------
-*/
-
-#ifndef ASSIMP_BUILD_NO_EXPORT
-#ifndef ASSIMP_BUILD_NO_3DS_EXPORTER
-
-#include "AssetLib/3DS/3DSExporter.h"
-#include "AssetLib/3DS/3DSHelper.h"
-#include "AssetLib/3DS/3DSLoader.h"
-#include "PostProcessing/SplitLargeMeshes.h"
-
-#include <assimp/SceneCombiner.h>
-#include <assimp/StringComparison.h>
-#include <assimp/DefaultLogger.hpp>
-#include <assimp/Exporter.hpp>
-#include <assimp/IOSystem.hpp>
-
-#include <memory>
-
-namespace Assimp {
-
-using namespace D3DS;
-
-namespace {
-
-//////////////////////////////////////////////////////////////////////////////////////
-// Scope utility to write a 3DS file chunk.
-//
-// Upon construction, the chunk header is written with the chunk type (flags)
-// filled out, but the chunk size left empty. Upon destruction, the correct chunk
-// size based on the then-position of the output stream cursor is filled in.
-class ChunkWriter {
-    enum {
-        CHUNK_SIZE_NOT_SET = 0xdeadbeef,
-        SIZE_OFFSET = 2
-    };
-
-public:
-    ChunkWriter(StreamWriterLE &writer, uint16_t chunk_type) :
-            writer(writer) {
-        chunk_start_pos = writer.GetCurrentPos();
-        writer.PutU2(chunk_type);
-        writer.PutU4((uint32_t)CHUNK_SIZE_NOT_SET);
-    }
-
-    ~ChunkWriter() {
-        std::size_t head_pos = writer.GetCurrentPos();
-
-        ai_assert(head_pos > chunk_start_pos);
-        const std::size_t chunk_size = head_pos - chunk_start_pos;
-
-        writer.SetCurrentPos(chunk_start_pos + SIZE_OFFSET);
-        writer.PutU4(static_cast<uint32_t>(chunk_size));
-        writer.SetCurrentPos(head_pos);
-    }
-
-private:
-    StreamWriterLE &writer;
-    std::size_t chunk_start_pos;
-};
-
-// Return an unique name for a given |mesh| attached to |node| that
-// preserves the mesh's given name if it has one. |index| is the index
-// of the mesh in |aiScene::mMeshes|.
-std::string GetMeshName(const aiMesh &mesh, unsigned int index, const aiNode &node) {
-    static const char underscore = '_';
-    char postfix[10] = { 0 };
-    ASSIMP_itoa10(postfix, index);
-
-    std::string result = node.mName.C_Str();
-    if (mesh.mName.length > 0) {
-        result += underscore;
-        result += mesh.mName.C_Str();
-    }
-    return result + underscore + postfix;
-}
-
-// Return an unique name for a given |mat| with original position |index|
-// in |aiScene::mMaterials|. The name preserves the original material
-// name if possible.
-std::string GetMaterialName(const aiMaterial &mat, unsigned int index) {
-    static const std::string underscore = "_";
-    char postfix[10] = { 0 };
-    ASSIMP_itoa10(postfix, index);
-
-    aiString mat_name;
-    if (AI_SUCCESS == mat.Get(AI_MATKEY_NAME, mat_name)) {
-        return mat_name.C_Str() + underscore + postfix;
-    }
-
-    return "Material" + underscore + postfix;
-}
-
-// Collect world transformations for each node
-void CollectTrafos(const aiNode *node, std::map<const aiNode *, aiMatrix4x4> &trafos) {
-    const aiMatrix4x4 &parent = node->mParent ? trafos[node->mParent] : aiMatrix4x4();
-    trafos[node] = parent * node->mTransformation;
-    for (unsigned int i = 0; i < node->mNumChildren; ++i) {
-        CollectTrafos(node->mChildren[i], trafos);
-    }
-}
-
-// Generate a flat list of the meshes (by index) assigned to each node
-void CollectMeshes(const aiNode *node, std::multimap<const aiNode *, unsigned int> &meshes) {
-    for (unsigned int i = 0; i < node->mNumMeshes; ++i) {
-        meshes.insert(std::make_pair(node, node->mMeshes[i]));
-    }
-    for (unsigned int i = 0; i < node->mNumChildren; ++i) {
-        CollectMeshes(node->mChildren[i], meshes);
-    }
-}
-} // namespace
-
-// ------------------------------------------------------------------------------------------------
-// Worker function for exporting a scene to 3DS. Prototyped and registered in Exporter.cpp
-void ExportScene3DS(const char *pFile, IOSystem *pIOSystem, const aiScene *pScene, const ExportProperties * /*pProperties*/) {
-    std::shared_ptr<IOStream> outfile(pIOSystem->Open(pFile, "wb"));
-    if (!outfile) {
-        throw DeadlyExportError("Could not open output .3ds file: " + std::string(pFile));
-    }
-
-    // TODO: This extra copy should be avoided and all of this made a preprocess
-    // requirement of the 3DS exporter.
-    //
-    // 3DS meshes can be max 0xffff (16 Bit) vertices and faces, respectively.
-    // SplitLargeMeshes can do this, but it requires the correct limit to be set
-    // which is not possible with the current way of specifying preprocess steps
-    // in |Exporter::ExportFormatEntry|.
-    aiScene *scenecopy_tmp;
-    SceneCombiner::CopyScene(&scenecopy_tmp, pScene);
-    std::unique_ptr<aiScene> scenecopy(scenecopy_tmp);
-
-    SplitLargeMeshesProcess_Triangle tri_splitter;
-    tri_splitter.SetLimit(0xffff);
-    tri_splitter.Execute(scenecopy.get());
-
-    SplitLargeMeshesProcess_Vertex vert_splitter;
-    vert_splitter.SetLimit(0xffff);
-    vert_splitter.Execute(scenecopy.get());
-
-    // Invoke the actual exporter
-    Discreet3DSExporter exporter(outfile, scenecopy.get());
-}
-
-} // end of namespace Assimp
-
-// ------------------------------------------------------------------------------------------------
-Discreet3DSExporter::Discreet3DSExporter(std::shared_ptr<IOStream> &outfile, const aiScene *scene) :
-        scene(scene), writer(outfile) {
-    CollectTrafos(scene->mRootNode, trafos);
-    CollectMeshes(scene->mRootNode, meshes);
-
-    ChunkWriter curRootChunk(writer, Discreet3DS::CHUNK_MAIN);
-
-    {
-        ChunkWriter curChunk(writer, Discreet3DS::CHUNK_OBJMESH);
-        WriteMaterials();
-        WriteMeshes();
-
-        {
-            ChunkWriter curChunk1(writer, Discreet3DS::CHUNK_MASTER_SCALE);
-            writer.PutF4(1.0f);
-        }
-    }
-
-    {
-        ChunkWriter curChunk(writer, Discreet3DS::CHUNK_KEYFRAMER);
-        WriteHierarchy(*scene->mRootNode, -1, -1);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-Discreet3DSExporter::~Discreet3DSExporter() {
-    // empty
-}
-
-// ------------------------------------------------------------------------------------------------
-int Discreet3DSExporter::WriteHierarchy(const aiNode &node, int seq, int sibling_level) {
-    // 3DS scene hierarchy is serialized as in http://www.martinreddy.net/gfx/3d/3DS.spec
-    {
-        ChunkWriter curRootChunk(writer, Discreet3DS::CHUNK_TRACKINFO);
-        {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_TRACKOBJNAME);
-
-            // Assimp node names are unique and distinct from all mesh-node
-            // names we generate; thus we can use them as-is
-            WriteString(node.mName);
-
-            // Two unknown int16 values - it is even unclear if 0 is a safe value
-            // but luckily importers do not know better either.
-            writer.PutI4(0);
-
-            int16_t hierarchy_pos = static_cast<int16_t>(seq);
-            if (sibling_level != -1) {
-                hierarchy_pos = (uint16_t)sibling_level;
-            }
-
-            // Write the hierarchy position
-            writer.PutI2(hierarchy_pos);
-        }
-    }
-
-    // TODO: write transformation chunks
-
-    ++seq;
-    sibling_level = seq;
-
-    // Write all children
-    for (unsigned int i = 0; i < node.mNumChildren; ++i) {
-        seq = WriteHierarchy(*node.mChildren[i], seq, i == 0 ? -1 : sibling_level);
-    }
-
-    // Write all meshes as separate nodes to be able to reference the meshes by name
-    for (unsigned int i = 0; i < node.mNumMeshes; ++i) {
-        const bool first_child = node.mNumChildren == 0 && i == 0;
-
-        const unsigned int mesh_idx = node.mMeshes[i];
-        const aiMesh &mesh = *scene->mMeshes[mesh_idx];
-
-        ChunkWriter curChunk(writer, Discreet3DS::CHUNK_TRACKINFO);
-        {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_TRACKOBJNAME);
-            WriteString(GetMeshName(mesh, mesh_idx, node));
-
-            writer.PutI4(0);
-            writer.PutI2(static_cast<int16_t>(first_child ? seq : sibling_level));
-            ++seq;
-        }
-    }
-    return seq;
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteMaterials() {
-    for (unsigned int i = 0; i < scene->mNumMaterials; ++i) {
-        ChunkWriter curRootChunk(writer, Discreet3DS::CHUNK_MAT_MATERIAL);
-        const aiMaterial &mat = *scene->mMaterials[i];
-
-        {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_MATNAME);
-            const std::string &name = GetMaterialName(mat, i);
-            WriteString(name);
-        }
-
-        aiColor3D color;
-        if (mat.Get(AI_MATKEY_COLOR_DIFFUSE, color) == AI_SUCCESS) {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAT_DIFFUSE);
-            WriteColor(color);
-        }
-
-        if (mat.Get(AI_MATKEY_COLOR_SPECULAR, color) == AI_SUCCESS) {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAT_SPECULAR);
-            WriteColor(color);
-        }
-
-        if (mat.Get(AI_MATKEY_COLOR_AMBIENT, color) == AI_SUCCESS) {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAT_AMBIENT);
-            WriteColor(color);
-        }
-
-        float f;
-        if (mat.Get(AI_MATKEY_OPACITY, f) == AI_SUCCESS) {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_TRANSPARENCY);
-            WritePercentChunk(1.0f - f);
-        }
-
-        if (mat.Get(AI_MATKEY_COLOR_EMISSIVE, color) == AI_SUCCESS) {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAT_SELF_ILLUM);
-            WriteColor(color);
-        }
-
-        aiShadingMode shading_mode = aiShadingMode_Flat;
-        if (mat.Get(AI_MATKEY_SHADING_MODEL, shading_mode) == AI_SUCCESS) {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHADING);
-
-            Discreet3DS::shadetype3ds shading_mode_out;
-            switch (shading_mode) {
-            case aiShadingMode_Flat:
-            case aiShadingMode_NoShading:
-                shading_mode_out = Discreet3DS::Flat;
-                break;
-
-            case aiShadingMode_Gouraud:
-            case aiShadingMode_Toon:
-            case aiShadingMode_OrenNayar:
-            case aiShadingMode_Minnaert:
-                shading_mode_out = Discreet3DS::Gouraud;
-                break;
-
-            case aiShadingMode_Phong:
-            case aiShadingMode_Blinn:
-            case aiShadingMode_CookTorrance:
-            case aiShadingMode_Fresnel:
-            case aiShadingMode_PBR_BRDF: // Possibly should be Discreet3DS::Metal in some cases but this is undocumented
-                shading_mode_out = Discreet3DS::Phong;
-                break;
-
-            default:
-                shading_mode_out = Discreet3DS::Flat;
-                ai_assert(false);
-            };
-            writer.PutU2(static_cast<uint16_t>(shading_mode_out));
-        }
-
-        if (mat.Get(AI_MATKEY_SHININESS, f) == AI_SUCCESS) {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHININESS);
-            WritePercentChunk(f);
-        }
-
-        if (mat.Get(AI_MATKEY_SHININESS_STRENGTH, f) == AI_SUCCESS) {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_SHININESS_PERCENT);
-            WritePercentChunk(f);
-        }
-
-        int twosided;
-        if (mat.Get(AI_MATKEY_TWOSIDED, twosided) == AI_SUCCESS && twosided != 0) {
-            ChunkWriter chunk(writer, Discreet3DS::CHUNK_MAT_TWO_SIDE);
-            writer.PutI2(1);
-        }
-
-        // Fallback to BASE_COLOR if no DIFFUSE
-        if (!WriteTexture(mat, aiTextureType_DIFFUSE, Discreet3DS::CHUNK_MAT_TEXTURE))
-            WriteTexture(mat, aiTextureType_BASE_COLOR, Discreet3DS::CHUNK_MAT_TEXTURE);
-
-        WriteTexture(mat, aiTextureType_HEIGHT, Discreet3DS::CHUNK_MAT_BUMPMAP);
-        WriteTexture(mat, aiTextureType_OPACITY, Discreet3DS::CHUNK_MAT_OPACMAP);
-        WriteTexture(mat, aiTextureType_SHININESS, Discreet3DS::CHUNK_MAT_MAT_SHINMAP);
-        WriteTexture(mat, aiTextureType_SPECULAR, Discreet3DS::CHUNK_MAT_SPECMAP);
-        WriteTexture(mat, aiTextureType_EMISSIVE, Discreet3DS::CHUNK_MAT_SELFIMAP);
-        WriteTexture(mat, aiTextureType_REFLECTION, Discreet3DS::CHUNK_MAT_REFLMAP);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// returns true if the texture existed
-bool Discreet3DSExporter::WriteTexture(const aiMaterial &mat, aiTextureType type, uint16_t chunk_flags) {
-    aiString path;
-    aiTextureMapMode map_mode[2] = {
-        aiTextureMapMode_Wrap, aiTextureMapMode_Wrap
-    };
-    ai_real blend = 1.0;
-    if (mat.GetTexture(type, 0, &path, nullptr, nullptr, &blend, nullptr, map_mode) != AI_SUCCESS || !path.length) {
-        return false;
-    }
-
-    // TODO: handle embedded textures properly
-    if (path.data[0] == '*') {
-        ASSIMP_LOG_ERROR("Ignoring embedded texture for export: ", path.C_Str());
-        return false;
-    }
-
-    ChunkWriter chunk(writer, chunk_flags);
-    {
-        ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAPFILE);
-        WriteString(path);
-    }
-
-    WritePercentChunk(blend);
-
-    {
-        ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAT_MAP_TILING);
-        uint16_t val = 0; // WRAP
-        if (map_mode[0] == aiTextureMapMode_Mirror) {
-            val = 0x2;
-        } else if (map_mode[0] == aiTextureMapMode_Decal) {
-            val = 0x10;
-        }
-        writer.PutU2(val);
-    }
-    // TODO: export texture transformation (i.e. UV offset, scale, rotation)
-    return true;
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteMeshes() {
-    // NOTE: 3DS allows for instances. However:
-    //   i)  not all importers support reading them
-    //   ii) instances are not as flexible as they are in assimp, in particular,
-    //        nodes can carry (and instance) only one mesh.
-    //
-    // This exporter currently deep clones all instanced meshes, i.e. for each mesh
-    // attached to a node a full TRIMESH chunk is written to the file.
-    //
-    // Furthermore, the TRIMESH is transformed into world space so that it will
-    // appear correctly if importers don't read the scene hierarchy at all.
-    for (MeshesByNodeMap::const_iterator it = meshes.begin(); it != meshes.end(); ++it) {
-        const aiNode &node = *(*it).first;
-        const unsigned int mesh_idx = (*it).second;
-
-        const aiMesh &mesh = *scene->mMeshes[mesh_idx];
-
-        // This should not happen if the SLM step is correctly executed
-        // before the scene is handed to the exporter
-        ai_assert(mesh.mNumVertices <= 0xffff);
-        ai_assert(mesh.mNumFaces <= 0xffff);
-
-        const aiMatrix4x4 &trafo = trafos[&node];
-
-        ChunkWriter chunk(writer, Discreet3DS::CHUNK_OBJBLOCK);
-
-        // Mesh name is tied to the node it is attached to so it can later be referenced
-        const std::string &name = GetMeshName(mesh, mesh_idx, node);
-        WriteString(name);
-
-        // TRIMESH chunk
-        ChunkWriter chunk2(writer, Discreet3DS::CHUNK_TRIMESH);
-
-        // Vertices in world space
-        {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_VERTLIST);
-
-            const uint16_t count = static_cast<uint16_t>(mesh.mNumVertices);
-            writer.PutU2(count);
-            for (unsigned int i = 0; i < mesh.mNumVertices; ++i) {
-                const aiVector3D &v = mesh.mVertices[i];
-                writer.PutF4(v.x);
-                writer.PutF4(v.y);
-                writer.PutF4(v.z);
-            }
-        }
-
-        // UV coordinates
-        if (mesh.HasTextureCoords(0)) {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_MAPLIST);
-            const uint16_t count = static_cast<uint16_t>(mesh.mNumVertices);
-            writer.PutU2(count);
-
-            for (unsigned int i = 0; i < mesh.mNumVertices; ++i) {
-                const aiVector3D &v = mesh.mTextureCoords[0][i];
-                writer.PutF4(v.x);
-                writer.PutF4(v.y);
-            }
-        }
-
-        // Faces (indices)
-        {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_FACELIST);
-
-            ai_assert(mesh.mNumFaces <= 0xffff);
-
-            // Count triangles, discard lines and points
-            uint16_t count = 0;
-            for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
-                const aiFace &f = mesh.mFaces[i];
-                if (f.mNumIndices < 3) {
-                    continue;
-                }
-                // TRIANGULATE step is a pre-requisite so we should not see polys here
-                ai_assert(f.mNumIndices == 3);
-                ++count;
-            }
-
-            writer.PutU2(count);
-            for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
-                const aiFace &f = mesh.mFaces[i];
-                if (f.mNumIndices < 3) {
-                    continue;
-                }
-
-                for (unsigned int j = 0; j < 3; ++j) {
-                    ai_assert(f.mIndices[j] <= 0xffff);
-                    writer.PutI2(static_cast<uint16_t>(f.mIndices[j]));
-                }
-
-                // Edge visibility flag
-                writer.PutI2(0x0);
-            }
-
-            // TODO: write smoothing groups (CHUNK_SMOOLIST)
-
-            WriteFaceMaterialChunk(mesh);
-        }
-
-        // Transformation matrix by which the mesh vertices have been pre-transformed with.
-        {
-            ChunkWriter curChunk(writer, Discreet3DS::CHUNK_TRMATRIX);
-            // Store rotation 3x3 matrix row wise
-            for (unsigned int r = 0; r < 3; ++r) {
-                for (unsigned int c = 0; c < 3; ++c) {
-                    writer.PutF4(trafo[r][c]);
-                }
-            }
-            // Store translation sub vector column wise
-            for (unsigned int r = 0; r < 3; ++r) {
-                writer.PutF4(trafo[r][3]);
-            }
-        }
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteFaceMaterialChunk(const aiMesh &mesh) {
-    ChunkWriter curChunk(writer, Discreet3DS::CHUNK_FACEMAT);
-    const std::string &name = GetMaterialName(*scene->mMaterials[mesh.mMaterialIndex], mesh.mMaterialIndex);
-    WriteString(name);
-
-    // Because assimp splits meshes by material, only a single
-    // FACEMAT chunk needs to be written
-    ai_assert(mesh.mNumFaces <= 0xffff);
-    const uint16_t count = static_cast<uint16_t>(mesh.mNumFaces);
-    writer.PutU2(count);
-
-    for (unsigned int i = 0; i < mesh.mNumFaces; ++i) {
-        writer.PutU2(static_cast<uint16_t>(i));
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteString(const std::string &s) {
-    for (std::string::const_iterator it = s.begin(); it != s.end(); ++it) {
-        writer.PutI1(*it);
-    }
-    writer.PutI1('\0');
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteString(const aiString &s) {
-    for (std::size_t i = 0; i < s.length; ++i) {
-        writer.PutI1(s.data[i]);
-    }
-    writer.PutI1('\0');
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WriteColor(const aiColor3D &color) {
-    ChunkWriter curChunk(writer, Discreet3DS::CHUNK_RGBF);
-    writer.PutF4(color.r);
-    writer.PutF4(color.g);
-    writer.PutF4(color.b);
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WritePercentChunk(float f) {
-    ChunkWriter curChunk(writer, Discreet3DS::CHUNK_PERCENTF);
-    writer.PutF4(f);
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSExporter::WritePercentChunk(double f) {
-    ChunkWriter ccurChunkhunk(writer, Discreet3DS::CHUNK_PERCENTD);
-    writer.PutF8(f);
-}
-
-#endif // ASSIMP_BUILD_NO_3DS_EXPORTER
-#endif // ASSIMP_BUILD_NO_EXPORT
diff --git a/libs/assimp/code/AssetLib/3DS/3DSExporter.h b/libs/assimp/code/AssetLib/3DS/3DSExporter.h
deleted file mode 100644
index 82ec351..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSExporter.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
-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 3DSExporter.h
- * 3DS Exporter Main Header
- */
-#ifndef AI_3DSEXPORTER_H_INC
-#define AI_3DSEXPORTER_H_INC
-
-#include <map>
-#include <memory>
-
-#include <assimp/StreamWriter.h>
-#include <assimp/material.h>
-
-struct aiScene;
-struct aiNode;
-struct aiMaterial;
-struct aiMesh;
-
-namespace Assimp
-{
-
-// ------------------------------------------------------------------------------------------------
-/**
- *  @brief  Helper class to export a given scene to a 3DS file.
- */
-// ------------------------------------------------------------------------------------------------
-class Discreet3DSExporter {
-public:
-    Discreet3DSExporter(std::shared_ptr<IOStream> &outfile, const aiScene* pScene);
-    ~Discreet3DSExporter();
-
-private:
-    void WriteMeshes();
-    void WriteMaterials();
-    bool WriteTexture(const aiMaterial& mat, aiTextureType type, uint16_t chunk_flags);
-    void WriteFaceMaterialChunk(const aiMesh& mesh);
-    int WriteHierarchy(const aiNode& node, int level, int sibling_level);
-    void WriteString(const std::string& s);
-    void WriteString(const aiString& s);
-    void WriteColor(const aiColor3D& color);
-    void WritePercentChunk(float f);
-    void WritePercentChunk(double f);
-
-private:
-    const aiScene* const scene;
-    StreamWriterLE writer;
-
-    std::map<const aiNode*, aiMatrix4x4> trafos;
-
-    typedef std::multimap<const aiNode*, unsigned int> MeshesByNodeMap;
-    MeshesByNodeMap meshes;
-
-};
-
-} // Namespace Assimp
-
-#endif // AI_3DSEXPORTER_H_INC
diff --git a/libs/assimp/code/AssetLib/3DS/3DSHelper.h b/libs/assimp/code/AssetLib/3DS/3DSHelper.h
deleted file mode 100644
index dc10980..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSHelper.h
+++ /dev/null
@@ -1,702 +0,0 @@
-/*
-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 Defines helper data structures for the import of 3DS files */
-
-#ifndef AI_3DSFILEHELPER_H_INC
-#define AI_3DSFILEHELPER_H_INC
-
-#include <assimp/SmoothingGroups.h>
-#include <assimp/SpatialSort.h>
-#include <assimp/StringUtils.h>
-#include <assimp/anim.h>
-#include <assimp/camera.h>
-#include <assimp/light.h>
-#include <assimp/material.h>
-#include <assimp/qnan.h>
-#include <cstdio> //sprintf
-
-namespace Assimp {
-namespace D3DS {
-
-#include <assimp/Compiler/pushpack1.h>
-
-// ---------------------------------------------------------------------------
-/** Defines chunks and data structures.
-*/
-namespace Discreet3DS {
-
-    //! data structure for a single chunk in a .3ds file
-    struct Chunk {
-        uint16_t Flag;
-        uint32_t Size;
-    } PACK_STRUCT;
-
-    //! Used for shading field in material3ds structure
-    //! From AutoDesk 3ds SDK
-    typedef enum {
-        // translated to gouraud shading with wireframe active
-        Wire = 0x0,
-
-        // if this material is set, no vertex normals will
-        // be calculated for the model. Face normals + gouraud
-        Flat = 0x1,
-
-        // standard gouraud shading
-        Gouraud = 0x2,
-
-        // phong shading
-        Phong = 0x3,
-
-        // cooktorrance or anistropic phong shading ...
-        // the exact meaning is unknown, if you know it
-        // feel free to tell me ;-)
-        Metal = 0x4,
-
-        // required by the ASE loader
-        Blinn = 0x5
-    } shadetype3ds;
-
-    // Flags for animated keys
-    enum {
-        KEY_USE_TENS = 0x1,
-        KEY_USE_CONT = 0x2,
-        KEY_USE_BIAS = 0x4,
-        KEY_USE_EASE_TO = 0x8,
-        KEY_USE_EASE_FROM = 0x10
-    };
-
-    enum {
-
-        // ********************************************************************
-        // Basic chunks which can be found everywhere in the file
-        CHUNK_VERSION = 0x0002,
-        CHUNK_RGBF = 0x0010, // float4 R; float4 G; float4 B
-        CHUNK_RGBB = 0x0011, // int1 R; int1 G; int B
-
-        // Linear color values (gamma = 2.2?)
-        CHUNK_LINRGBF = 0x0013, // float4 R; float4 G; float4 B
-        CHUNK_LINRGBB = 0x0012, // int1 R; int1 G; int B
-
-        CHUNK_PERCENTW = 0x0030, // int2   percentage
-        CHUNK_PERCENTF = 0x0031, // float4  percentage
-        CHUNK_PERCENTD = 0x0032, // float8  percentage
-        // ********************************************************************
-
-        // Prj master chunk
-        CHUNK_PRJ = 0xC23D,
-
-        // MDLI master chunk
-        CHUNK_MLI = 0x3DAA,
-
-        // Primary main chunk of the .3ds file
-        CHUNK_MAIN = 0x4D4D,
-
-        // Mesh main chunk
-        CHUNK_OBJMESH = 0x3D3D,
-
-        // Specifies the background color of the .3ds file
-        // This is passed through the material system for
-        // viewing purposes.
-        CHUNK_BKGCOLOR = 0x1200,
-
-        // Specifies the ambient base color of the scene.
-        // This is added to all materials in the file
-        CHUNK_AMBCOLOR = 0x2100,
-
-        // Specifies the background image for the whole scene
-        // This value is passed through the material system
-        // to the viewer
-        CHUNK_BIT_MAP = 0x1100,
-        CHUNK_BIT_MAP_EXISTS = 0x1101,
-
-        // ********************************************************************
-        // Viewport related stuff. Ignored
-        CHUNK_DEFAULT_VIEW = 0x3000,
-        CHUNK_VIEW_TOP = 0x3010,
-        CHUNK_VIEW_BOTTOM = 0x3020,
-        CHUNK_VIEW_LEFT = 0x3030,
-        CHUNK_VIEW_RIGHT = 0x3040,
-        CHUNK_VIEW_FRONT = 0x3050,
-        CHUNK_VIEW_BACK = 0x3060,
-        CHUNK_VIEW_USER = 0x3070,
-        CHUNK_VIEW_CAMERA = 0x3080,
-        // ********************************************************************
-
-        // Mesh chunks
-        CHUNK_OBJBLOCK = 0x4000,
-        CHUNK_TRIMESH = 0x4100,
-        CHUNK_VERTLIST = 0x4110,
-        CHUNK_VERTFLAGS = 0x4111,
-        CHUNK_FACELIST = 0x4120,
-        CHUNK_FACEMAT = 0x4130,
-        CHUNK_MAPLIST = 0x4140,
-        CHUNK_SMOOLIST = 0x4150,
-        CHUNK_TRMATRIX = 0x4160,
-        CHUNK_MESHCOLOR = 0x4165,
-        CHUNK_TXTINFO = 0x4170,
-        CHUNK_LIGHT = 0x4600,
-        CHUNK_CAMERA = 0x4700,
-        CHUNK_HIERARCHY = 0x4F00,
-
-        // Specifies the global scaling factor. This is applied
-        // to the root node's transformation matrix
-        CHUNK_MASTER_SCALE = 0x0100,
-
-        // ********************************************************************
-        // Material chunks
-        CHUNK_MAT_MATERIAL = 0xAFFF,
-
-        // asciiz containing the name of the material
-        CHUNK_MAT_MATNAME = 0xA000,
-        CHUNK_MAT_AMBIENT = 0xA010, // followed by color chunk
-        CHUNK_MAT_DIFFUSE = 0xA020, // followed by color chunk
-        CHUNK_MAT_SPECULAR = 0xA030, // followed by color chunk
-
-        // Specifies the shininess of the material
-        // followed by percentage chunk
-        CHUNK_MAT_SHININESS = 0xA040,
-        CHUNK_MAT_SHININESS_PERCENT = 0xA041,
-
-        // Specifies the shading mode to be used
-        // followed by a short
-        CHUNK_MAT_SHADING = 0xA100,
-
-        // NOTE: Emissive color (self illumination) seems not
-        // to be a color but a single value, type is unknown.
-        // Make the parser accept both of them.
-        // followed by percentage chunk (?)
-        CHUNK_MAT_SELF_ILLUM = 0xA080,
-
-        // Always followed by percentage chunk  (?)
-        CHUNK_MAT_SELF_ILPCT = 0xA084,
-
-        // Always followed by percentage chunk
-        CHUNK_MAT_TRANSPARENCY = 0xA050,
-
-        // Diffuse texture channel 0
-        CHUNK_MAT_TEXTURE = 0xA200,
-
-        // Contains opacity information for each texel
-        CHUNK_MAT_OPACMAP = 0xA210,
-
-        // Contains a reflection map to be used to reflect
-        // the environment. This is partially supported.
-        CHUNK_MAT_REFLMAP = 0xA220,
-
-        // Self Illumination map (emissive colors)
-        CHUNK_MAT_SELFIMAP = 0xA33d,
-
-        // Bumpmap. Not specified whether it is a heightmap
-        // or a normal map. Assme it is a heightmap since
-        // artist normally prefer this format.
-        CHUNK_MAT_BUMPMAP = 0xA230,
-
-        // Specular map. Seems to influence the specular color
-        CHUNK_MAT_SPECMAP = 0xA204,
-
-        // Holds shininess data.
-        CHUNK_MAT_MAT_SHINMAP = 0xA33C,
-
-        // Scaling in U/V direction.
-        // (need to gen separate UV coordinate set
-        // and do this by hand)
-        CHUNK_MAT_MAP_USCALE = 0xA354,
-        CHUNK_MAT_MAP_VSCALE = 0xA356,
-
-        // Translation in U/V direction.
-        // (need to gen separate UV coordinate set
-        // and do this by hand)
-        CHUNK_MAT_MAP_UOFFSET = 0xA358,
-        CHUNK_MAT_MAP_VOFFSET = 0xA35a,
-
-        // UV-coordinates rotation around the z-axis
-        // Assumed to be in radians.
-        CHUNK_MAT_MAP_ANG = 0xA35C,
-
-        // Tiling flags for 3DS files
-        CHUNK_MAT_MAP_TILING = 0xa351,
-
-        // Specifies the file name of a texture
-        CHUNK_MAPFILE = 0xA300,
-
-        // Specifies whether a material requires two-sided rendering
-        CHUNK_MAT_TWO_SIDE = 0xA081,
-        // ********************************************************************
-
-        // Main keyframer chunk. Contains translation/rotation/scaling data
-        CHUNK_KEYFRAMER = 0xB000,
-
-        // Supported sub chunks
-        CHUNK_TRACKINFO = 0xB002,
-        CHUNK_TRACKOBJNAME = 0xB010,
-        CHUNK_TRACKDUMMYOBJNAME = 0xB011,
-        CHUNK_TRACKPIVOT = 0xB013,
-        CHUNK_TRACKPOS = 0xB020,
-        CHUNK_TRACKROTATE = 0xB021,
-        CHUNK_TRACKSCALE = 0xB022,
-
-        // ********************************************************************
-        // Keyframes for various other stuff in the file
-        // Partially ignored
-        CHUNK_AMBIENTKEY = 0xB001,
-        CHUNK_TRACKMORPH = 0xB026,
-        CHUNK_TRACKHIDE = 0xB029,
-        CHUNK_OBJNUMBER = 0xB030,
-        CHUNK_TRACKCAMERA = 0xB003,
-        CHUNK_TRACKFOV = 0xB023,
-        CHUNK_TRACKROLL = 0xB024,
-        CHUNK_TRACKCAMTGT = 0xB004,
-        CHUNK_TRACKLIGHT = 0xB005,
-        CHUNK_TRACKLIGTGT = 0xB006,
-        CHUNK_TRACKSPOTL = 0xB007,
-        CHUNK_FRAMES = 0xB008,
-        // ********************************************************************
-
-        // light sub-chunks
-        CHUNK_DL_OFF = 0x4620,
-        CHUNK_DL_OUTER_RANGE = 0x465A,
-        CHUNK_DL_INNER_RANGE = 0x4659,
-        CHUNK_DL_MULTIPLIER = 0x465B,
-        CHUNK_DL_EXCLUDE = 0x4654,
-        CHUNK_DL_ATTENUATE = 0x4625,
-        CHUNK_DL_SPOTLIGHT = 0x4610,
-
-        // camera sub-chunks
-        CHUNK_CAM_RANGES = 0x4720
-    };
-}
-
-// ---------------------------------------------------------------------------
-/** Helper structure representing a 3ds mesh face */
-struct Face : public FaceWithSmoothingGroup {
-};
-
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4315)
-#endif // _MSC_VER
-
-// ---------------------------------------------------------------------------
-/** Helper structure representing a texture */
-struct Texture {
-    //! Default constructor
-    Texture() AI_NO_EXCEPT
-            : mTextureBlend(0.0f),
-              mMapName(),
-              mOffsetU(0.0),
-              mOffsetV(0.0),
-              mScaleU(1.0),
-              mScaleV(1.0),
-              mRotation(0.0),
-              mMapMode(aiTextureMapMode_Wrap),
-              bPrivate(),
-              iUVSrc(0) {
-        mTextureBlend = get_qnan();
-    }
-
-    Texture(const Texture &other) :
-            mTextureBlend(other.mTextureBlend),
-            mMapName(other.mMapName),
-            mOffsetU(other.mOffsetU),
-            mOffsetV(other.mOffsetV),
-            mScaleU(other.mScaleU),
-            mScaleV(other.mScaleV),
-            mRotation(other.mRotation),
-            mMapMode(other.mMapMode),
-            bPrivate(other.bPrivate),
-            iUVSrc(other.iUVSrc) {
-        // empty
-    }
-
-    Texture(Texture &&other) AI_NO_EXCEPT : mTextureBlend(other.mTextureBlend),
-                                            mMapName(std::move(other.mMapName)),
-                                            mOffsetU(other.mOffsetU),
-                                            mOffsetV(other.mOffsetV),
-                                            mScaleU(other.mScaleU),
-                                            mScaleV(other.mScaleV),
-                                            mRotation(other.mRotation),
-                                            mMapMode(other.mMapMode),
-                                            bPrivate(other.bPrivate),
-                                            iUVSrc(other.iUVSrc) {
-        // empty
-    }
-
-    Texture &operator=(Texture &&other) AI_NO_EXCEPT {
-        if (this == &other) {
-            return *this;
-        }
-
-        mTextureBlend = other.mTextureBlend;
-        mMapName = std::move(other.mMapName);
-        mOffsetU = other.mOffsetU;
-        mOffsetV = other.mOffsetV;
-        mScaleU = other.mScaleU;
-        mScaleV = other.mScaleV;
-        mRotation = other.mRotation;
-        mMapMode = other.mMapMode;
-        bPrivate = other.bPrivate;
-        iUVSrc = other.iUVSrc;
-
-        return *this;
-    }
-
-    //! Specifies the blend factor for the texture
-    ai_real mTextureBlend;
-
-    //! Specifies the filename of the texture
-    std::string mMapName;
-
-    //! Specifies texture coordinate offsets/scaling/rotations
-    ai_real mOffsetU;
-    ai_real mOffsetV;
-    ai_real mScaleU;
-    ai_real mScaleV;
-    ai_real mRotation;
-
-    //! Specifies the mapping mode to be used for the texture
-    aiTextureMapMode mMapMode;
-
-    //! Used internally
-    bool bPrivate;
-    int iUVSrc;
-};
-
-#include <assimp/Compiler/poppack1.h>
-
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif // _MSC_VER
-
-// ---------------------------------------------------------------------------
-/** Helper structure representing a 3ds material */
-struct Material {
-    //! Default constructor has been deleted
-    Material() :
-            mName(),
-            mDiffuse(ai_real(0.6), ai_real(0.6), ai_real(0.6)),
-            mSpecularExponent(ai_real(0.0)),
-            mShininessStrength(ai_real(1.0)),
-            mShading(Discreet3DS::Gouraud),
-            mTransparency(ai_real(1.0)),
-            mBumpHeight(ai_real(1.0)),
-            mTwoSided(false) {
-        // empty
-    }
-
-    //! Constructor with explicit name
-    explicit Material(const std::string &name) :
-            mName(name),
-            mDiffuse(ai_real(0.6), ai_real(0.6), ai_real(0.6)),
-            mSpecularExponent(ai_real(0.0)),
-            mShininessStrength(ai_real(1.0)),
-            mShading(Discreet3DS::Gouraud),
-            mTransparency(ai_real(1.0)),
-            mBumpHeight(ai_real(1.0)),
-            mTwoSided(false) {
-        // empty
-    }
-
-    Material(const Material &other) :
-            mName(other.mName),
-            mDiffuse(other.mDiffuse),
-            mSpecularExponent(other.mSpecularExponent),
-            mShininessStrength(other.mShininessStrength),
-            mSpecular(other.mSpecular),
-            mAmbient(other.mAmbient),
-            mShading(other.mShading),
-            mTransparency(other.mTransparency),
-            sTexDiffuse(other.sTexDiffuse),
-            sTexOpacity(other.sTexOpacity),
-            sTexSpecular(other.sTexSpecular),
-            sTexReflective(other.sTexReflective),
-            sTexBump(other.sTexBump),
-            sTexEmissive(other.sTexEmissive),
-            sTexShininess(other.sTexShininess),
-            mBumpHeight(other.mBumpHeight),
-            mEmissive(other.mEmissive),
-            sTexAmbient(other.sTexAmbient),
-            mTwoSided(other.mTwoSided) {
-        // empty
-    }
-
-    //! Move constructor. This is explicitly written because MSVC doesn't support defaulting it
-    Material(Material &&other) AI_NO_EXCEPT : mName(std::move(other.mName)),
-                                              mDiffuse(other.mDiffuse),
-                                              mSpecularExponent(other.mSpecularExponent),
-                                              mShininessStrength(other.mShininessStrength),
-                                              mSpecular(other.mSpecular),
-                                              mAmbient(other.mAmbient),
-                                              mShading(other.mShading),
-                                              mTransparency(other.mTransparency),
-                                              sTexDiffuse(std::move(other.sTexDiffuse)),
-                                              sTexOpacity(std::move(other.sTexOpacity)),
-                                              sTexSpecular(std::move(other.sTexSpecular)),
-                                              sTexReflective(std::move(other.sTexReflective)),
-                                              sTexBump(std::move(other.sTexBump)),
-                                              sTexEmissive(std::move(other.sTexEmissive)),
-                                              sTexShininess(std::move(other.sTexShininess)),
-                                              mBumpHeight(other.mBumpHeight),
-                                              mEmissive(other.mEmissive),
-                                              sTexAmbient(std::move(other.sTexAmbient)),
-                                              mTwoSided(other.mTwoSided) {
-        // empty
-    }
-
-    Material &operator=(Material &&other) AI_NO_EXCEPT {
-        if (this == &other) {
-            return *this;
-        }
-
-        mName = std::move(other.mName);
-        mDiffuse = other.mDiffuse;
-        mSpecularExponent = other.mSpecularExponent;
-        mShininessStrength = other.mShininessStrength,
-        mSpecular = other.mSpecular;
-        mAmbient = other.mAmbient;
-        mShading = other.mShading;
-        mTransparency = other.mTransparency;
-        sTexDiffuse = std::move(other.sTexDiffuse);
-        sTexOpacity = std::move(other.sTexOpacity);
-        sTexSpecular = std::move(other.sTexSpecular);
-        sTexReflective = std::move(other.sTexReflective);
-        sTexBump = std::move(other.sTexBump);
-        sTexEmissive = std::move(other.sTexEmissive);
-        sTexShininess = std::move(other.sTexShininess);
-        mBumpHeight = other.mBumpHeight;
-        mEmissive = other.mEmissive;
-        sTexAmbient = std::move(other.sTexAmbient);
-        mTwoSided = other.mTwoSided;
-
-        return *this;
-    }
-
-    virtual ~Material() {
-        // empty
-    }
-
-    //! Name of the material
-    std::string mName;
-    //! Diffuse color of the material
-    aiColor3D mDiffuse;
-    //! Specular exponent
-    ai_real mSpecularExponent;
-    //! Shininess strength, in percent
-    ai_real mShininessStrength;
-    //! Specular color of the material
-    aiColor3D mSpecular;
-    //! Ambient color of the material
-    aiColor3D mAmbient;
-    //! Shading type to be used
-    Discreet3DS::shadetype3ds mShading;
-    //! Opacity of the material
-    ai_real mTransparency;
-    //! Diffuse texture channel
-    Texture sTexDiffuse;
-    //! Opacity texture channel
-    Texture sTexOpacity;
-    //! Specular texture channel
-    Texture sTexSpecular;
-    //! Reflective texture channel
-    Texture sTexReflective;
-    //! Bump texture channel
-    Texture sTexBump;
-    //! Emissive texture channel
-    Texture sTexEmissive;
-    //! Shininess texture channel
-    Texture sTexShininess;
-    //! Scaling factor for the bump values
-    ai_real mBumpHeight;
-    //! Emissive color
-    aiColor3D mEmissive;
-    //! Ambient texture channel
-    //! (used by the ASE format)
-    Texture sTexAmbient;
-    //! True if the material must be rendered from two sides
-    bool mTwoSided;
-};
-
-// ---------------------------------------------------------------------------
-/** Helper structure to represent a 3ds file mesh */
-struct Mesh : public MeshWithSmoothingGroups<D3DS::Face> {
-    //! Default constructor has been deleted
-    Mesh() = delete;
-
-    //! Constructor with explicit name
-    explicit Mesh(const std::string &name) :
-            mName(name) {
-    }
-
-    //! Name of the mesh
-    std::string mName;
-
-    //! Texture coordinates
-    std::vector<aiVector3D> mTexCoords;
-
-    //! Face materials
-    std::vector<unsigned int> mFaceMaterials;
-
-    //! Local transformation matrix
-    aiMatrix4x4 mMat;
-};
-
-// ---------------------------------------------------------------------------
-/** Float key - quite similar to aiVectorKey and aiQuatKey. Both are in the
-    C-API, so it would be difficult to make them a template. */
-struct aiFloatKey {
-    double mTime; ///< The time of this key
-    ai_real mValue; ///< The value of this key
-
-#ifdef __cplusplus
-
-    // time is not compared
-    bool operator==(const aiFloatKey &o) const { return o.mValue == this->mValue; }
-
-    bool operator!=(const aiFloatKey &o) const { return o.mValue != this->mValue; }
-
-    // Only time is compared. This operator is defined
-    // for use with std::sort
-    bool operator<(const aiFloatKey &o) const { return mTime < o.mTime; }
-
-    bool operator>(const aiFloatKey &o) const { return mTime > o.mTime; }
-
-#endif
-};
-
-// ---------------------------------------------------------------------------
-/** Helper structure to represent a 3ds file node */
-struct Node {
-    Node() = delete;
-
-    explicit Node(const std::string &name) :
-            mParent(nullptr),
-            mName(name),
-            mInstanceNumber(0),
-            mHierarchyPos(0),
-            mHierarchyIndex(0),
-            mInstanceCount(1) {
-        aRotationKeys.reserve(20);
-        aPositionKeys.reserve(20);
-        aScalingKeys.reserve(20);
-    }
-
-    ~Node() {
-        for (unsigned int i = 0; i < mChildren.size(); ++i)
-            delete mChildren[i];
-    }
-
-    //! Pointer to the parent node
-    Node *mParent;
-
-    //! Holds all child nodes
-    std::vector<Node *> mChildren;
-
-    //! Name of the node
-    std::string mName;
-
-    //! InstanceNumber of the node
-    int32_t mInstanceNumber;
-
-    //! Dummy nodes: real name to be combined with the $$$DUMMY
-    std::string mDummyName;
-
-    //! Position of the node in the hierarchy (tree depth)
-    int16_t mHierarchyPos;
-
-    //! Index of the node
-    int16_t mHierarchyIndex;
-
-    //! Rotation keys loaded from the file
-    std::vector<aiQuatKey> aRotationKeys;
-
-    //! Position keys loaded from the file
-    std::vector<aiVectorKey> aPositionKeys;
-
-    //! Scaling keys loaded from the file
-    std::vector<aiVectorKey> aScalingKeys;
-
-    // For target lights (spot lights and directional lights):
-    // The position of the target
-    std::vector<aiVectorKey> aTargetPositionKeys;
-
-    // For cameras: the camera roll angle
-    std::vector<aiFloatKey> aCameraRollKeys;
-
-    //! Pivot position loaded from the file
-    aiVector3D vPivot;
-
-    //instance count, will be kept only for the first node
-    int32_t mInstanceCount;
-
-    //! Add a child node, setup the right parent node for it
-    //! \param pc Node to be 'adopted'
-    inline Node &push_back(Node *pc) {
-        mChildren.push_back(pc);
-        pc->mParent = this;
-        return *this;
-    }
-};
-// ---------------------------------------------------------------------------
-/** Helper structure analogue to aiScene */
-struct Scene {
-    //! List of all materials loaded
-    //! NOTE: 3ds references materials globally
-    std::vector<Material> mMaterials;
-
-    //! List of all meshes loaded
-    std::vector<Mesh> mMeshes;
-
-    //! List of all cameras loaded
-    std::vector<aiCamera *> mCameras;
-
-    //! List of all lights loaded
-    std::vector<aiLight *> mLights;
-
-    //! Pointer to the root node of the scene
-    // --- moved to main class
-    // Node* pcRootNode;
-};
-
-} // end of namespace D3DS
-} // end of namespace Assimp
-
-#endif // AI_XFILEHELPER_H_INC
diff --git a/libs/assimp/code/AssetLib/3DS/3DSLoader.cpp b/libs/assimp/code/AssetLib/3DS/3DSLoader.cpp
deleted file mode 100644
index 0ec8b87..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSLoader.cpp
+++ /dev/null
@@ -1,1336 +0,0 @@
-/*
----------------------------------------------------------------------------
-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  3DSLoader.cpp
- *  @brief Implementation of the 3ds importer class
- *
- *  http://www.the-labs.com/Blender/3DS-details.html
- */
-
-#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
-
-#include "3DSLoader.h"
-#include <assimp/StringComparison.h>
-#include <assimp/importerdesc.h>
-#include <assimp/scene.h>
-#include <assimp/DefaultLogger.hpp>
-#include <assimp/IOSystem.hpp>
-
-using namespace Assimp;
-
-static const aiImporterDesc desc = {
-    "Discreet 3DS Importer",
-    "",
-    "",
-    "Limited animation support",
-    aiImporterFlags_SupportBinaryFlavour,
-    0,
-    0,
-    0,
-    0,
-    "3ds prj"
-};
-
-// ------------------------------------------------------------------------------------------------
-// Begins a new parsing block
-// - Reads the current chunk and validates it
-// - computes its length
-#define ASSIMP_3DS_BEGIN_CHUNK()                                              \
-    while (true) {                                                            \
-        if (stream->GetRemainingSizeToLimit() < sizeof(Discreet3DS::Chunk)) { \
-            return;                                                           \
-        }                                                                     \
-        Discreet3DS::Chunk chunk;                                             \
-        ReadChunk(&chunk);                                                    \
-        int chunkSize = chunk.Size - sizeof(Discreet3DS::Chunk);              \
-        if (chunkSize <= 0)                                                   \
-            continue;                                                         \
-        const unsigned int oldReadLimit = stream->SetReadLimit(               \
-                stream->GetCurrentPos() + chunkSize);
-
-// ------------------------------------------------------------------------------------------------
-// End a parsing block
-// Must follow at the end of each parsing block, reset chunk end marker to previous value
-#define ASSIMP_3DS_END_CHUNK()                  \
-    stream->SkipToReadLimit();                  \
-    stream->SetReadLimit(oldReadLimit);         \
-    if (stream->GetRemainingSizeToLimit() == 0) \
-        return;                                 \
-    }
-
-// ------------------------------------------------------------------------------------------------
-// Constructor to be privately used by Importer
-Discreet3DSImporter::Discreet3DSImporter() :
-        stream(), mLastNodeIndex(), mCurrentNode(), mRootNode(), mScene(), mMasterScale(), bHasBG(), bIsPrj() {
-    // empty
-}
-
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-Discreet3DSImporter::~Discreet3DSImporter() {
-    // empty
-}
-
-// ------------------------------------------------------------------------------------------------
-// Returns whether the class can handle the format of the given file.
-bool Discreet3DSImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
-    static const uint16_t token[] = { 0x4d4d, 0x3dc2 /*, 0x3daa */ };
-    return CheckMagicToken(pIOHandler, pFile, token, AI_COUNT_OF(token), 0, sizeof token[0]);
-}
-
-// ------------------------------------------------------------------------------------------------
-// Loader registry entry
-const aiImporterDesc *Discreet3DSImporter::GetInfo() const {
-    return &desc;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Setup configuration properties
-void Discreet3DSImporter::SetupProperties(const Importer * /*pImp*/) {
-    // nothing to be done for the moment
-}
-
-// ------------------------------------------------------------------------------------------------
-// Imports the given file into the given scene structure.
-void Discreet3DSImporter::InternReadFile(const std::string &pFile,
-        aiScene *pScene, IOSystem *pIOHandler) {
-
-    auto theFile = pIOHandler->Open(pFile, "rb");
-    if (!theFile) {
-        throw DeadlyImportError("3DS: Could not open ", pFile);
-    }
-
-    StreamReaderLE theStream(theFile);
-
-    // We should have at least one chunk
-    if (theStream.GetRemainingSize() < 16) {
-        throw DeadlyImportError("3DS file is either empty or corrupt: ", pFile);
-    }
-    this->stream = &theStream;
-
-    // Allocate our temporary 3DS representation
-    D3DS::Scene _scene;
-    mScene = &_scene;
-
-    // Initialize members
-    D3DS::Node _rootNode("UNNAMED");
-    mLastNodeIndex = -1;
-    mCurrentNode = &_rootNode;
-    mRootNode = mCurrentNode;
-    mRootNode->mHierarchyPos = -1;
-    mRootNode->mHierarchyIndex = -1;
-    mRootNode->mParent = nullptr;
-    mMasterScale = 1.0f;
-    mBackgroundImage = std::string();
-    bHasBG = false;
-    bIsPrj = false;
-
-    // Parse the file
-    ParseMainChunk();
-
-    // Process all meshes in the file. First check whether all
-    // face indices have valid values. The generate our
-    // internal verbose representation. Finally compute normal
-    // vectors from the smoothing groups we read from the
-    // file.
-    for (auto &mesh : mScene->mMeshes) {
-        if (mesh.mFaces.size() > 0 && mesh.mPositions.size() == 0) {
-            throw DeadlyImportError("3DS file contains faces but no vertices: ", pFile);
-        }
-        CheckIndices(mesh);
-        MakeUnique(mesh);
-        ComputeNormalsWithSmoothingsGroups<D3DS::Face>(mesh);
-    }
-
-    // Replace all occurrences of the default material with a
-    // valid material. Generate it if no material containing
-    // DEFAULT in its name has been found in the file
-    ReplaceDefaultMaterial();
-
-    // Convert the scene from our internal representation to an
-    // aiScene object. This involves copying all meshes, lights
-    // and cameras to the scene
-    ConvertScene(pScene);
-
-    // Generate the node graph for the scene. This is a little bit
-    // tricky since we'll need to split some meshes into sub-meshes
-    GenerateNodeGraph(pScene);
-
-    // Now apply the master scaling factor to the scene
-    ApplyMasterScale(pScene);
-
-    // Our internal scene representation and the root
-    // node will be automatically deleted, so the whole hierarchy will follow
-
-    AI_DEBUG_INVALIDATE_PTR(mRootNode);
-    AI_DEBUG_INVALIDATE_PTR(mScene);
-    AI_DEBUG_INVALIDATE_PTR(this->stream);
-}
-
-// ------------------------------------------------------------------------------------------------
-// Applies a master-scaling factor to the imported scene
-void Discreet3DSImporter::ApplyMasterScale(aiScene *pScene) {
-    // There are some 3DS files with a zero scaling factor
-    if (!mMasterScale)
-        mMasterScale = 1.0f;
-    else
-        mMasterScale = 1.0f / mMasterScale;
-
-    // Construct an uniform scaling matrix and multiply with it
-    pScene->mRootNode->mTransformation *= aiMatrix4x4(
-            mMasterScale, 0.0f, 0.0f, 0.0f,
-            0.0f, mMasterScale, 0.0f, 0.0f,
-            0.0f, 0.0f, mMasterScale, 0.0f,
-            0.0f, 0.0f, 0.0f, 1.0f);
-
-    // Check whether a scaling track is assigned to the root node.
-}
-
-// ------------------------------------------------------------------------------------------------
-// Reads a new chunk from the file
-void Discreet3DSImporter::ReadChunk(Discreet3DS::Chunk *pcOut) {
-    ai_assert(pcOut != nullptr);
-
-    pcOut->Flag = stream->GetI2();
-    pcOut->Size = stream->GetI4();
-
-    if (pcOut->Size - sizeof(Discreet3DS::Chunk) > stream->GetRemainingSize()) {
-        throw DeadlyImportError("Chunk is too large");
-    }
-
-    if (pcOut->Size - sizeof(Discreet3DS::Chunk) > stream->GetRemainingSizeToLimit()) {
-        ASSIMP_LOG_ERROR("3DS: Chunk overflow");
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Skip a chunk
-void Discreet3DSImporter::SkipChunk() {
-    Discreet3DS::Chunk psChunk;
-    ReadChunk(&psChunk);
-
-    stream->IncPtr(psChunk.Size - sizeof(Discreet3DS::Chunk));
-    return;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Process the primary chunk of the file
-void Discreet3DSImporter::ParseMainChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-
-    case Discreet3DS::CHUNK_PRJ:
-        bIsPrj = true;
-        break;
-    case Discreet3DS::CHUNK_MAIN:
-        ParseEditorChunk();
-        break;
-    };
-
-    ASSIMP_3DS_END_CHUNK();
-    // recursively continue processing this hierarchy level
-    return ParseMainChunk();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseEditorChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_OBJMESH:
-
-        ParseObjectChunk();
-        break;
-
-    // NOTE: In several documentations in the internet this
-    // chunk appears at different locations
-    case Discreet3DS::CHUNK_KEYFRAMER:
-
-        ParseKeyframeChunk();
-        break;
-
-    case Discreet3DS::CHUNK_VERSION: {
-        // print the version number
-        char buff[10];
-        ASSIMP_itoa10(buff, stream->GetI2());
-        ASSIMP_LOG_INFO("3DS file format version: ", buff);
-    } break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseObjectChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_OBJBLOCK: {
-        unsigned int cnt = 0;
-        const char *sz = (const char *)stream->GetPtr();
-
-        // Get the name of the geometry object
-        while (stream->GetI1())
-            ++cnt;
-        ParseChunk(sz, cnt);
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_MATERIAL:
-
-        // Add a new material to the list
-        mScene->mMaterials.push_back(D3DS::Material(std::string("UNNAMED_" + ai_to_string(mScene->mMaterials.size()))));
-        ParseMaterialChunk();
-        break;
-
-    case Discreet3DS::CHUNK_AMBCOLOR:
-
-        // This is the ambient base color of the scene.
-        // We add it to the ambient color of all materials
-        ParseColorChunk(&mClrAmbient, true);
-        if (is_qnan(mClrAmbient.r)) {
-            // We failed to read the ambient base color.
-            ASSIMP_LOG_ERROR("3DS: Failed to read ambient base color");
-            mClrAmbient.r = mClrAmbient.g = mClrAmbient.b = 0.0f;
-        }
-        break;
-
-    case Discreet3DS::CHUNK_BIT_MAP: {
-        // Specifies the background image. The string should already be
-        // properly 0 terminated but we need to be sure
-        unsigned int cnt = 0;
-        const char *sz = (const char *)stream->GetPtr();
-        while (stream->GetI1())
-            ++cnt;
-        mBackgroundImage = std::string(sz, cnt);
-    } break;
-
-    case Discreet3DS::CHUNK_BIT_MAP_EXISTS:
-        bHasBG = true;
-        break;
-
-    case Discreet3DS::CHUNK_MASTER_SCALE:
-        // Scene master scaling factor
-        mMasterScale = stream->GetF4();
-        break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseChunk(const char *name, unsigned int num) {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // IMPLEMENTATION NOTE;
-    // Cameras or lights define their transformation in their parent node and in the
-    // corresponding light or camera chunks. However, we read and process the latter
-    // to to be able to return valid cameras/lights even if no scenegraph is given.
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_TRIMESH: {
-        // this starts a new triangle mesh
-        mScene->mMeshes.push_back(D3DS::Mesh(std::string(name, num)));
-
-        // Read mesh chunks
-        ParseMeshChunk();
-    } break;
-
-    case Discreet3DS::CHUNK_LIGHT: {
-        // This starts a new light
-        aiLight *light = new aiLight();
-        mScene->mLights.push_back(light);
-
-        light->mName.Set(std::string(name, num));
-
-        // First read the position of the light
-        light->mPosition.x = stream->GetF4();
-        light->mPosition.y = stream->GetF4();
-        light->mPosition.z = stream->GetF4();
-
-        light->mColorDiffuse = aiColor3D(1.f, 1.f, 1.f);
-
-        // Now check for further subchunks
-        if (!bIsPrj) /* fixme */
-            ParseLightChunk();
-
-        // The specular light color is identical the the diffuse light color. The ambient light color
-        // is equal to the ambient base color of the whole scene.
-        light->mColorSpecular = light->mColorDiffuse;
-        light->mColorAmbient = mClrAmbient;
-
-        if (light->mType == aiLightSource_UNDEFINED) {
-            // It must be a point light
-            light->mType = aiLightSource_POINT;
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_CAMERA: {
-        // This starts a new camera
-        aiCamera *camera = new aiCamera();
-        mScene->mCameras.push_back(camera);
-        camera->mName.Set(std::string(name, num));
-
-        // First read the position of the camera
-        camera->mPosition.x = stream->GetF4();
-        camera->mPosition.y = stream->GetF4();
-        camera->mPosition.z = stream->GetF4();
-
-        // Then the camera target
-        camera->mLookAt.x = stream->GetF4() - camera->mPosition.x;
-        camera->mLookAt.y = stream->GetF4() - camera->mPosition.y;
-        camera->mLookAt.z = stream->GetF4() - camera->mPosition.z;
-        ai_real len = camera->mLookAt.Length();
-        if (len < 1e-5) {
-
-            // There are some files with lookat == position. Don't know why or whether it's ok or not.
-            ASSIMP_LOG_ERROR("3DS: Unable to read proper camera look-at vector");
-            camera->mLookAt = aiVector3D(0.0, 1.0, 0.0);
-
-        } else
-            camera->mLookAt /= len;
-
-        // And finally - the camera rotation angle, in counter clockwise direction
-        const ai_real angle = AI_DEG_TO_RAD(stream->GetF4());
-        aiQuaternion quat(camera->mLookAt, angle);
-        camera->mUp = quat.GetMatrix() * aiVector3D(0.0, 1.0, 0.0);
-
-        // Read the lense angle
-        camera->mHorizontalFOV = AI_DEG_TO_RAD(stream->GetF4());
-        if (camera->mHorizontalFOV < 0.001f) {
-            camera->mHorizontalFOV = float(AI_DEG_TO_RAD(45.f));
-        }
-
-        // Now check for further subchunks
-        if (!bIsPrj) /* fixme */ {
-            ParseCameraChunk();
-        }
-    } break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseLightChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-    aiLight *light = mScene->mLights.back();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_DL_SPOTLIGHT:
-        // Now we can be sure that the light is a spot light
-        light->mType = aiLightSource_SPOT;
-
-        // We wouldn't need to normalize here, but we do it
-        light->mDirection.x = stream->GetF4() - light->mPosition.x;
-        light->mDirection.y = stream->GetF4() - light->mPosition.y;
-        light->mDirection.z = stream->GetF4() - light->mPosition.z;
-        light->mDirection.Normalize();
-
-        // Now the hotspot and falloff angles - in degrees
-        light->mAngleInnerCone = AI_DEG_TO_RAD(stream->GetF4());
-
-        // FIX: the falloff angle is just an offset
-        light->mAngleOuterCone = light->mAngleInnerCone + AI_DEG_TO_RAD(stream->GetF4());
-        break;
-
-        // intensity multiplier
-    case Discreet3DS::CHUNK_DL_MULTIPLIER:
-        light->mColorDiffuse = light->mColorDiffuse * stream->GetF4();
-        break;
-
-        // light color
-    case Discreet3DS::CHUNK_RGBF:
-    case Discreet3DS::CHUNK_LINRGBF:
-        light->mColorDiffuse.r *= stream->GetF4();
-        light->mColorDiffuse.g *= stream->GetF4();
-        light->mColorDiffuse.b *= stream->GetF4();
-        break;
-
-        // light attenuation
-    case Discreet3DS::CHUNK_DL_ATTENUATE:
-        light->mAttenuationLinear = stream->GetF4();
-        break;
-    };
-
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseCameraChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-    aiCamera *camera = mScene->mCameras.back();
-
-    // get chunk type
-    switch (chunk.Flag) {
-        // near and far clip plane
-    case Discreet3DS::CHUNK_CAM_RANGES:
-        camera->mClipPlaneNear = stream->GetF4();
-        camera->mClipPlaneFar = stream->GetF4();
-        break;
-    }
-
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseKeyframeChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_TRACKCAMTGT:
-    case Discreet3DS::CHUNK_TRACKSPOTL:
-    case Discreet3DS::CHUNK_TRACKCAMERA:
-    case Discreet3DS::CHUNK_TRACKINFO:
-    case Discreet3DS::CHUNK_TRACKLIGHT:
-    case Discreet3DS::CHUNK_TRACKLIGTGT:
-
-        // this starts a new mesh hierarchy chunk
-        ParseHierarchyChunk(chunk.Flag);
-        break;
-    };
-
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Little helper function for ParseHierarchyChunk
-void Discreet3DSImporter::InverseNodeSearch(D3DS::Node *pcNode, D3DS::Node *pcCurrent) {
-    if (!pcCurrent) {
-        mRootNode->push_back(pcNode);
-        return;
-    }
-
-    if (pcCurrent->mHierarchyPos == pcNode->mHierarchyPos) {
-        if (pcCurrent->mParent) {
-            pcCurrent->mParent->push_back(pcNode);
-        } else
-            pcCurrent->push_back(pcNode);
-        return;
-    }
-    return InverseNodeSearch(pcNode, pcCurrent->mParent);
-}
-
-// ------------------------------------------------------------------------------------------------
-// Find a node with a specific name in the import hierarchy
-D3DS::Node *FindNode(D3DS::Node *root, const std::string &name) {
-    if (root->mName == name) {
-        return root;
-    }
-
-    for (std::vector<D3DS::Node *>::iterator it = root->mChildren.begin(); it != root->mChildren.end(); ++it) {
-        D3DS::Node *nd = FindNode(*it, name);
-        if (nullptr != nd) {
-            return nd;
-        }
-    }
-
-    return nullptr;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Binary predicate for std::unique()
-template <class T>
-bool KeyUniqueCompare(const T &first, const T &second) {
-    return first.mTime == second.mTime;
-}
-
-// ------------------------------------------------------------------------------------------------
-// Skip some additional import data.
-void Discreet3DSImporter::SkipTCBInfo() {
-    unsigned int flags = stream->GetI2();
-
-    if (!flags) {
-        // Currently we can't do anything with these values. They occur
-        // quite rare, so it wouldn't be worth the effort implementing
-        // them. 3DS is not really suitable for complex animations,
-        // so full support is not required.
-        ASSIMP_LOG_WARN("3DS: Skipping TCB animation info");
-    }
-
-    if (flags & Discreet3DS::KEY_USE_TENS) {
-        stream->IncPtr(4);
-    }
-    if (flags & Discreet3DS::KEY_USE_BIAS) {
-        stream->IncPtr(4);
-    }
-    if (flags & Discreet3DS::KEY_USE_CONT) {
-        stream->IncPtr(4);
-    }
-    if (flags & Discreet3DS::KEY_USE_EASE_FROM) {
-        stream->IncPtr(4);
-    }
-    if (flags & Discreet3DS::KEY_USE_EASE_TO) {
-        stream->IncPtr(4);
-    }
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read hierarchy and keyframe info
-void Discreet3DSImporter::ParseHierarchyChunk(uint16_t parent) {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_TRACKOBJNAME:
-
-        // This is the name of the object to which the track applies. The chunk also
-        // defines the position of this object in the hierarchy.
-        {
-
-            // First of all: get the name of the object
-            unsigned int cnt = 0;
-            const char *sz = (const char *)stream->GetPtr();
-
-            while (stream->GetI1())
-                ++cnt;
-            std::string name = std::string(sz, cnt);
-
-            // Now find out whether we have this node already (target animation channels
-            // are stored with a separate object ID)
-            D3DS::Node *pcNode = FindNode(mRootNode, name);
-            int instanceNumber = 1;
-
-            if (pcNode) {
-                // if the source is not a CHUNK_TRACKINFO block it won't be an object instance
-                if (parent != Discreet3DS::CHUNK_TRACKINFO) {
-                    mCurrentNode = pcNode;
-                    break;
-                }
-                pcNode->mInstanceCount++;
-                instanceNumber = pcNode->mInstanceCount;
-            }
-            pcNode = new D3DS::Node(name);
-            pcNode->mInstanceNumber = instanceNumber;
-
-            // There are two unknown values which we can safely ignore
-            stream->IncPtr(4);
-
-            // Now read the hierarchy position of the object
-            uint16_t hierarchy = stream->GetI2() + 1;
-            pcNode->mHierarchyPos = hierarchy;
-            pcNode->mHierarchyIndex = mLastNodeIndex;
-
-            // And find a proper position in the graph for it
-            if (mCurrentNode && mCurrentNode->mHierarchyPos == hierarchy) {
-
-                // add to the parent of the last touched node
-                mCurrentNode->mParent->push_back(pcNode);
-                mLastNodeIndex++;
-            } else if (hierarchy >= mLastNodeIndex) {
-
-                // place it at the current position in the hierarchy
-                mCurrentNode->push_back(pcNode);
-                mLastNodeIndex = hierarchy;
-            } else {
-                // need to go back to the specified position in the hierarchy.
-                InverseNodeSearch(pcNode, mCurrentNode);
-                mLastNodeIndex++;
-            }
-            // Make this node the current node
-            mCurrentNode = pcNode;
-        }
-        break;
-
-    case Discreet3DS::CHUNK_TRACKDUMMYOBJNAME:
-
-        // This is the "real" name of a $$$DUMMY object
-        {
-            const char *sz = (const char *)stream->GetPtr();
-            while (stream->GetI1())
-                ;
-
-            // If object name is DUMMY, take this one instead
-            if (mCurrentNode->mName == "$$$DUMMY") {
-                mCurrentNode->mName = std::string(sz);
-                break;
-            }
-        }
-        break;
-
-    case Discreet3DS::CHUNK_TRACKPIVOT:
-
-        if (Discreet3DS::CHUNK_TRACKINFO != parent) {
-            ASSIMP_LOG_WARN("3DS: Skipping pivot subchunk for non usual object");
-            break;
-        }
-
-        // Pivot = origin of rotation and scaling
-        mCurrentNode->vPivot.x = stream->GetF4();
-        mCurrentNode->vPivot.y = stream->GetF4();
-        mCurrentNode->vPivot.z = stream->GetF4();
-        break;
-
-        // ////////////////////////////////////////////////////////////////////
-        // POSITION KEYFRAME
-    case Discreet3DS::CHUNK_TRACKPOS: {
-        stream->IncPtr(10);
-        const unsigned int numFrames = stream->GetI4();
-        bool sortKeys = false;
-
-        // This could also be meant as the target position for
-        // (targeted) lights and cameras
-        std::vector<aiVectorKey> *l;
-        if (Discreet3DS::CHUNK_TRACKCAMTGT == parent || Discreet3DS::CHUNK_TRACKLIGTGT == parent) {
-            l = &mCurrentNode->aTargetPositionKeys;
-        } else
-            l = &mCurrentNode->aPositionKeys;
-
-        l->reserve(numFrames);
-        for (unsigned int i = 0; i < numFrames; ++i) {
-            const unsigned int fidx = stream->GetI4();
-
-            // Setup a new position key
-            aiVectorKey v;
-            v.mTime = (double)fidx;
-
-            SkipTCBInfo();
-            v.mValue.x = stream->GetF4();
-            v.mValue.y = stream->GetF4();
-            v.mValue.z = stream->GetF4();
-
-            // check whether we'll need to sort the keys
-            if (!l->empty() && v.mTime <= l->back().mTime)
-                sortKeys = true;
-
-            // Add the new keyframe to the list
-            l->push_back(v);
-        }
-
-        // Sort all keys with ascending time values and remove duplicates?
-        if (sortKeys) {
-            std::stable_sort(l->begin(), l->end());
-            l->erase(std::unique(l->begin(), l->end(), &KeyUniqueCompare<aiVectorKey>), l->end());
-        }
-    }
-
-    break;
-
-        // ////////////////////////////////////////////////////////////////////
-        // CAMERA ROLL KEYFRAME
-    case Discreet3DS::CHUNK_TRACKROLL: {
-        // roll keys are accepted for cameras only
-        if (parent != Discreet3DS::CHUNK_TRACKCAMERA) {
-            ASSIMP_LOG_WARN("3DS: Ignoring roll track for non-camera object");
-            break;
-        }
-        bool sortKeys = false;
-        std::vector<aiFloatKey> *l = &mCurrentNode->aCameraRollKeys;
-
-        stream->IncPtr(10);
-        const unsigned int numFrames = stream->GetI4();
-        l->reserve(numFrames);
-        for (unsigned int i = 0; i < numFrames; ++i) {
-            const unsigned int fidx = stream->GetI4();
-
-            // Setup a new position key
-            aiFloatKey v;
-            v.mTime = (double)fidx;
-
-            // This is just a single float
-            SkipTCBInfo();
-            v.mValue = stream->GetF4();
-
-            // Check whether we'll need to sort the keys
-            if (!l->empty() && v.mTime <= l->back().mTime)
-                sortKeys = true;
-
-            // Add the new keyframe to the list
-            l->push_back(v);
-        }
-
-        // Sort all keys with ascending time values and remove duplicates?
-        if (sortKeys) {
-            std::stable_sort(l->begin(), l->end());
-            l->erase(std::unique(l->begin(), l->end(), &KeyUniqueCompare<aiFloatKey>), l->end());
-        }
-    } break;
-
-        // ////////////////////////////////////////////////////////////////////
-        // CAMERA FOV KEYFRAME
-    case Discreet3DS::CHUNK_TRACKFOV: {
-        ASSIMP_LOG_ERROR("3DS: Skipping FOV animation track. "
-                         "This is not supported");
-    } break;
-
-        // ////////////////////////////////////////////////////////////////////
-        // ROTATION KEYFRAME
-    case Discreet3DS::CHUNK_TRACKROTATE: {
-        stream->IncPtr(10);
-        const unsigned int numFrames = stream->GetI4();
-
-        bool sortKeys = false;
-        std::vector<aiQuatKey> *l = &mCurrentNode->aRotationKeys;
-        l->reserve(numFrames);
-
-        for (unsigned int i = 0; i < numFrames; ++i) {
-            const unsigned int fidx = stream->GetI4();
-            SkipTCBInfo();
-
-            aiQuatKey v;
-            v.mTime = (double)fidx;
-
-            // The rotation keyframe is given as an axis-angle pair
-            const float rad = stream->GetF4();
-            aiVector3D axis;
-            axis.x = stream->GetF4();
-            axis.y = stream->GetF4();
-            axis.z = stream->GetF4();
-
-            if (!axis.x && !axis.y && !axis.z)
-                axis.y = 1.f;
-
-            // Construct a rotation quaternion from the axis-angle pair
-            v.mValue = aiQuaternion(axis, rad);
-
-            // Check whether we'll need to sort the keys
-            if (!l->empty() && v.mTime <= l->back().mTime)
-                sortKeys = true;
-
-            // add the new keyframe to the list
-            l->push_back(v);
-        }
-        // Sort all keys with ascending time values and remove duplicates?
-        if (sortKeys) {
-            std::stable_sort(l->begin(), l->end());
-            l->erase(std::unique(l->begin(), l->end(), &KeyUniqueCompare<aiQuatKey>), l->end());
-        }
-    } break;
-
-        // ////////////////////////////////////////////////////////////////////
-        // SCALING KEYFRAME
-    case Discreet3DS::CHUNK_TRACKSCALE: {
-        stream->IncPtr(10);
-        const unsigned int numFrames = stream->GetI2();
-        stream->IncPtr(2);
-
-        bool sortKeys = false;
-        std::vector<aiVectorKey> *l = &mCurrentNode->aScalingKeys;
-        l->reserve(numFrames);
-
-        for (unsigned int i = 0; i < numFrames; ++i) {
-            const unsigned int fidx = stream->GetI4();
-            SkipTCBInfo();
-
-            // Setup a new key
-            aiVectorKey v;
-            v.mTime = (double)fidx;
-
-            // ... and read its value
-            v.mValue.x = stream->GetF4();
-            v.mValue.y = stream->GetF4();
-            v.mValue.z = stream->GetF4();
-
-            // check whether we'll need to sort the keys
-            if (!l->empty() && v.mTime <= l->back().mTime)
-                sortKeys = true;
-
-            // Remove zero-scalings on singular axes - they've been reported to be there erroneously in some strange files
-            if (!v.mValue.x) v.mValue.x = 1.f;
-            if (!v.mValue.y) v.mValue.y = 1.f;
-            if (!v.mValue.z) v.mValue.z = 1.f;
-
-            l->push_back(v);
-        }
-        // Sort all keys with ascending time values and remove duplicates?
-        if (sortKeys) {
-            std::stable_sort(l->begin(), l->end());
-            l->erase(std::unique(l->begin(), l->end(), &KeyUniqueCompare<aiVectorKey>), l->end());
-        }
-    } break;
-    };
-
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read a face chunk - it contains smoothing groups and material assignments
-void Discreet3DSImporter::ParseFaceChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // Get the mesh we're currently working on
-    D3DS::Mesh &mMesh = mScene->mMeshes.back();
-
-    // Get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_SMOOLIST: {
-        // This is the list of smoothing groups - a bitfield for every face.
-        // Up to 32 smoothing groups assigned to a single face.
-        unsigned int num = chunkSize / 4, m = 0;
-        if (num > mMesh.mFaces.size()) {
-            throw DeadlyImportError("3DS: More smoothing groups than faces");
-        }
-        for (std::vector<D3DS::Face>::iterator i = mMesh.mFaces.begin(); m != num; ++i, ++m) {
-            // nth bit is set for nth smoothing group
-            (*i).iSmoothGroup = stream->GetI4();
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_FACEMAT: {
-        // at fist an asciiz with the material name
-        const char *sz = (const char *)stream->GetPtr();
-        while (stream->GetI1())
-            ;
-
-        // find the index of the material
-        unsigned int idx = 0xcdcdcdcd, cnt = 0;
-        for (std::vector<D3DS::Material>::const_iterator i = mScene->mMaterials.begin(); i != mScene->mMaterials.end(); ++i, ++cnt) {
-            // use case independent comparisons. hopefully it will work.
-            if ((*i).mName.length() && !ASSIMP_stricmp(sz, (*i).mName.c_str())) {
-                idx = cnt;
-                break;
-            }
-        }
-        if (0xcdcdcdcd == idx) {
-            ASSIMP_LOG_ERROR("3DS: Unknown material: ", sz);
-        }
-
-        // Now continue and read all material indices
-        cnt = (uint16_t)stream->GetI2();
-        for (unsigned int i = 0; i < cnt; ++i) {
-            unsigned int fidx = (uint16_t)stream->GetI2();
-
-            // check range
-            if (fidx >= mMesh.mFaceMaterials.size()) {
-                ASSIMP_LOG_ERROR("3DS: Invalid face index in face material list");
-            } else
-                mMesh.mFaceMaterials[fidx] = idx;
-        }
-    } break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read a mesh chunk. Here's the actual mesh data
-void Discreet3DSImporter::ParseMeshChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // Get the mesh we're currently working on
-    D3DS::Mesh &mMesh = mScene->mMeshes.back();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_VERTLIST: {
-        // This is the list of all vertices in the current mesh
-        int num = (int)(uint16_t)stream->GetI2();
-        mMesh.mPositions.reserve(num);
-        while (num-- > 0) {
-            aiVector3D v;
-            v.x = stream->GetF4();
-            v.y = stream->GetF4();
-            v.z = stream->GetF4();
-            mMesh.mPositions.push_back(v);
-        }
-    } break;
-    case Discreet3DS::CHUNK_TRMATRIX: {
-        // This is the RLEATIVE transformation matrix of the current mesh. Vertices are
-        // pretransformed by this matrix wonder.
-        mMesh.mMat.a1 = stream->GetF4();
-        mMesh.mMat.b1 = stream->GetF4();
-        mMesh.mMat.c1 = stream->GetF4();
-        mMesh.mMat.a2 = stream->GetF4();
-        mMesh.mMat.b2 = stream->GetF4();
-        mMesh.mMat.c2 = stream->GetF4();
-        mMesh.mMat.a3 = stream->GetF4();
-        mMesh.mMat.b3 = stream->GetF4();
-        mMesh.mMat.c3 = stream->GetF4();
-        mMesh.mMat.a4 = stream->GetF4();
-        mMesh.mMat.b4 = stream->GetF4();
-        mMesh.mMat.c4 = stream->GetF4();
-    } break;
-
-    case Discreet3DS::CHUNK_MAPLIST: {
-        // This is the list of all UV coords in the current mesh
-        int num = (int)(uint16_t)stream->GetI2();
-        mMesh.mTexCoords.reserve(num);
-        while (num-- > 0) {
-            aiVector3D v;
-            v.x = stream->GetF4();
-            v.y = stream->GetF4();
-            mMesh.mTexCoords.push_back(v);
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_FACELIST: {
-        // This is the list of all faces in the current mesh
-        int num = (int)(uint16_t)stream->GetI2();
-        mMesh.mFaces.reserve(num);
-        while (num-- > 0) {
-            // 3DS faces are ALWAYS triangles
-            mMesh.mFaces.push_back(D3DS::Face());
-            D3DS::Face &sFace = mMesh.mFaces.back();
-
-            sFace.mIndices[0] = (uint16_t)stream->GetI2();
-            sFace.mIndices[1] = (uint16_t)stream->GetI2();
-            sFace.mIndices[2] = (uint16_t)stream->GetI2();
-
-            stream->IncPtr(2); // skip edge visibility flag
-        }
-
-        // Resize the material array (0xcdcdcdcd marks the default material; so if a face is
-        // not referenced by a material, $$DEFAULT will be assigned to it)
-        mMesh.mFaceMaterials.resize(mMesh.mFaces.size(), 0xcdcdcdcd);
-
-        // Larger 3DS files could have multiple FACE chunks here
-        chunkSize = (int)stream->GetRemainingSizeToLimit();
-        if (chunkSize > (int)sizeof(Discreet3DS::Chunk))
-            ParseFaceChunk();
-    } break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read a 3DS material chunk
-void Discreet3DSImporter::ParseMaterialChunk() {
-    ASSIMP_3DS_BEGIN_CHUNK();
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_MAT_MATNAME:
-
-    {
-        // The material name string is already zero-terminated, but we need to be sure ...
-        const char *sz = (const char *)stream->GetPtr();
-        unsigned int cnt = 0;
-        while (stream->GetI1())
-            ++cnt;
-
-        if (!cnt) {
-            // This may not be, we use the default name instead
-            ASSIMP_LOG_ERROR("3DS: Empty material name");
-        } else
-            mScene->mMaterials.back().mName = std::string(sz, cnt);
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_DIFFUSE: {
-        // This is the diffuse material color
-        aiColor3D *pc = &mScene->mMaterials.back().mDiffuse;
-        ParseColorChunk(pc);
-        if (is_qnan(pc->r)) {
-            // color chunk is invalid. Simply ignore it
-            ASSIMP_LOG_ERROR("3DS: Unable to read DIFFUSE chunk");
-            pc->r = pc->g = pc->b = 1.0f;
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_SPECULAR: {
-        // This is the specular material color
-        aiColor3D *pc = &mScene->mMaterials.back().mSpecular;
-        ParseColorChunk(pc);
-        if (is_qnan(pc->r)) {
-            // color chunk is invalid. Simply ignore it
-            ASSIMP_LOG_ERROR("3DS: Unable to read SPECULAR chunk");
-            pc->r = pc->g = pc->b = 1.0f;
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_AMBIENT: {
-        // This is the ambient material color
-        aiColor3D *pc = &mScene->mMaterials.back().mAmbient;
-        ParseColorChunk(pc);
-        if (is_qnan(pc->r)) {
-            // color chunk is invalid. Simply ignore it
-            ASSIMP_LOG_ERROR("3DS: Unable to read AMBIENT chunk");
-            pc->r = pc->g = pc->b = 0.0f;
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_SELF_ILLUM: {
-        // This is the emissive material color
-        aiColor3D *pc = &mScene->mMaterials.back().mEmissive;
-        ParseColorChunk(pc);
-        if (is_qnan(pc->r)) {
-            // color chunk is invalid. Simply ignore it
-            ASSIMP_LOG_ERROR("3DS: Unable to read EMISSIVE chunk");
-            pc->r = pc->g = pc->b = 0.0f;
-        }
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_TRANSPARENCY: {
-        // This is the material's transparency
-        ai_real *pcf = &mScene->mMaterials.back().mTransparency;
-        *pcf = ParsePercentageChunk();
-
-        // NOTE: transparency, not opacity
-        if (is_qnan(*pcf))
-            *pcf = ai_real(1.0);
-        else
-            *pcf = ai_real(1.0) - *pcf * (ai_real)0xFFFF / ai_real(100.0);
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_SHADING:
-        // This is the material shading mode
-        mScene->mMaterials.back().mShading = (D3DS::Discreet3DS::shadetype3ds)stream->GetI2();
-        break;
-
-    case Discreet3DS::CHUNK_MAT_TWO_SIDE:
-        // This is the two-sided flag
-        mScene->mMaterials.back().mTwoSided = true;
-        break;
-
-    case Discreet3DS::CHUNK_MAT_SHININESS: { // This is the shininess of the material
-        ai_real *pcf = &mScene->mMaterials.back().mSpecularExponent;
-        *pcf = ParsePercentageChunk();
-        if (is_qnan(*pcf))
-            *pcf = 0.0;
-        else
-            *pcf *= (ai_real)0xFFFF;
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_SHININESS_PERCENT: { // This is the shininess strength of the material
-        ai_real *pcf = &mScene->mMaterials.back().mShininessStrength;
-        *pcf = ParsePercentageChunk();
-        if (is_qnan(*pcf))
-            *pcf = ai_real(0.0);
-        else
-            *pcf *= (ai_real)0xffff / ai_real(100.0);
-    } break;
-
-    case Discreet3DS::CHUNK_MAT_SELF_ILPCT: { // This is the self illumination strength of the material
-        ai_real f = ParsePercentageChunk();
-        if (is_qnan(f))
-            f = ai_real(0.0);
-        else
-            f *= (ai_real)0xFFFF / ai_real(100.0);
-        mScene->mMaterials.back().mEmissive = aiColor3D(f, f, f);
-    } break;
-
-    // Parse texture chunks
-    case Discreet3DS::CHUNK_MAT_TEXTURE:
-        // Diffuse texture
-        ParseTextureChunk(&mScene->mMaterials.back().sTexDiffuse);
-        break;
-    case Discreet3DS::CHUNK_MAT_BUMPMAP:
-        // Height map
-        ParseTextureChunk(&mScene->mMaterials.back().sTexBump);
-        break;
-    case Discreet3DS::CHUNK_MAT_OPACMAP:
-        // Opacity texture
-        ParseTextureChunk(&mScene->mMaterials.back().sTexOpacity);
-        break;
-    case Discreet3DS::CHUNK_MAT_MAT_SHINMAP:
-        // Shininess map
-        ParseTextureChunk(&mScene->mMaterials.back().sTexShininess);
-        break;
-    case Discreet3DS::CHUNK_MAT_SPECMAP:
-        // Specular map
-        ParseTextureChunk(&mScene->mMaterials.back().sTexSpecular);
-        break;
-    case Discreet3DS::CHUNK_MAT_SELFIMAP:
-        // Self-illumination (emissive) map
-        ParseTextureChunk(&mScene->mMaterials.back().sTexEmissive);
-        break;
-    case Discreet3DS::CHUNK_MAT_REFLMAP:
-        // Reflection map
-        ParseTextureChunk(&mScene->mMaterials.back().sTexReflective);
-        break;
-    };
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-void Discreet3DSImporter::ParseTextureChunk(D3DS::Texture *pcOut) {
-    ASSIMP_3DS_BEGIN_CHUNK();
-
-    // get chunk type
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_MAPFILE: {
-        // The material name string is already zero-terminated, but we need to be sure ...
-        const char *sz = (const char *)stream->GetPtr();
-        unsigned int cnt = 0;
-        while (stream->GetI1())
-            ++cnt;
-        pcOut->mMapName = std::string(sz, cnt);
-    } break;
-
-    case Discreet3DS::CHUNK_PERCENTD:
-        // Manually parse the blend factor
-        pcOut->mTextureBlend = ai_real(stream->GetF8());
-        break;
-
-    case Discreet3DS::CHUNK_PERCENTF:
-        // Manually parse the blend factor
-        pcOut->mTextureBlend = stream->GetF4();
-        break;
-
-    case Discreet3DS::CHUNK_PERCENTW:
-        // Manually parse the blend factor
-        pcOut->mTextureBlend = (ai_real)((uint16_t)stream->GetI2()) / ai_real(100.0);
-        break;
-
-    case Discreet3DS::CHUNK_MAT_MAP_USCALE:
-        // Texture coordinate scaling in the U direction
-        pcOut->mScaleU = stream->GetF4();
-        if (0.0f == pcOut->mScaleU) {
-            ASSIMP_LOG_WARN("Texture coordinate scaling in the x direction is zero. Assuming 1.");
-            pcOut->mScaleU = 1.0f;
-        }
-        break;
-    case Discreet3DS::CHUNK_MAT_MAP_VSCALE:
-        // Texture coordinate scaling in the V direction
-        pcOut->mScaleV = stream->GetF4();
-        if (0.0f == pcOut->mScaleV) {
-            ASSIMP_LOG_WARN("Texture coordinate scaling in the y direction is zero. Assuming 1.");
-            pcOut->mScaleV = 1.0f;
-        }
-        break;
-
-    case Discreet3DS::CHUNK_MAT_MAP_UOFFSET:
-        // Texture coordinate offset in the U direction
-        pcOut->mOffsetU = -stream->GetF4();
-        break;
-
-    case Discreet3DS::CHUNK_MAT_MAP_VOFFSET:
-        // Texture coordinate offset in the V direction
-        pcOut->mOffsetV = stream->GetF4();
-        break;
-
-    case Discreet3DS::CHUNK_MAT_MAP_ANG:
-        // Texture coordinate rotation, CCW in DEGREES
-        pcOut->mRotation = -AI_DEG_TO_RAD(stream->GetF4());
-        break;
-
-    case Discreet3DS::CHUNK_MAT_MAP_TILING: {
-        const uint16_t iFlags = stream->GetI2();
-
-        // Get the mapping mode (for both axes)
-        if (iFlags & 0x2u)
-            pcOut->mMapMode = aiTextureMapMode_Mirror;
-
-        else if (iFlags & 0x10u)
-            pcOut->mMapMode = aiTextureMapMode_Decal;
-
-        // wrapping in all remaining cases
-        else
-            pcOut->mMapMode = aiTextureMapMode_Wrap;
-    } break;
-    };
-
-    ASSIMP_3DS_END_CHUNK();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read a percentage chunk
-ai_real Discreet3DSImporter::ParsePercentageChunk() {
-    Discreet3DS::Chunk chunk;
-    ReadChunk(&chunk);
-
-    if (Discreet3DS::CHUNK_PERCENTF == chunk.Flag) {
-        return stream->GetF4() * ai_real(100) / ai_real(0xFFFF);
-    } else if (Discreet3DS::CHUNK_PERCENTW == chunk.Flag) {
-        return (ai_real)((uint16_t)stream->GetI2()) / (ai_real)0xFFFF;
-    }
-
-    return get_qnan();
-}
-
-// ------------------------------------------------------------------------------------------------
-// Read a color chunk. If a percentage chunk is found instead it is read as a grayscale color
-void Discreet3DSImporter::ParseColorChunk(aiColor3D *out, bool acceptPercent) {
-    ai_assert(out != nullptr);
-
-    // error return value
-    const ai_real qnan = get_qnan();
-    static const aiColor3D clrError = aiColor3D(qnan, qnan, qnan);
-
-    Discreet3DS::Chunk chunk;
-    ReadChunk(&chunk);
-    const unsigned int diff = chunk.Size - sizeof(Discreet3DS::Chunk);
-
-    bool bGamma = false;
-
-    // Get the type of the chunk
-    switch (chunk.Flag) {
-    case Discreet3DS::CHUNK_LINRGBF:
-        bGamma = true;
-
-    case Discreet3DS::CHUNK_RGBF:
-        if (sizeof(float) * 3 > diff) {
-            *out = clrError;
-            return;
-        }
-        out->r = stream->GetF4();
-        out->g = stream->GetF4();
-        out->b = stream->GetF4();
-        break;
-
-    case Discreet3DS::CHUNK_LINRGBB:
-        bGamma = true;
-    case Discreet3DS::CHUNK_RGBB: {
-        if (sizeof(char) * 3 > diff) {
-            *out = clrError;
-            return;
-        }
-        const ai_real invVal = ai_real(1.0) / ai_real(255.0);
-        out->r = (ai_real)(uint8_t)stream->GetI1() * invVal;
-        out->g = (ai_real)(uint8_t)stream->GetI1() * invVal;
-        out->b = (ai_real)(uint8_t)stream->GetI1() * invVal;
-    } break;
-
-    // Percentage chunks are accepted, too.
-    case Discreet3DS::CHUNK_PERCENTF:
-        if (acceptPercent && 4 <= diff) {
-            out->g = out->b = out->r = stream->GetF4();
-            break;
-        }
-        *out = clrError;
-        return;
-
-    case Discreet3DS::CHUNK_PERCENTW:
-        if (acceptPercent && 1 <= diff) {
-            out->g = out->b = out->r = (ai_real)(uint8_t)stream->GetI1() / ai_real(255.0);
-            break;
-        }
-        *out = clrError;
-        return;
-
-    default:
-        stream->IncPtr(diff);
-        // Skip unknown chunks, hope this won't cause any problems.
-        return ParseColorChunk(out, acceptPercent);
-    };
-    (void)bGamma;
-}
-
-#endif // !! ASSIMP_BUILD_NO_3DS_IMPORTER
diff --git a/libs/assimp/code/AssetLib/3DS/3DSLoader.h b/libs/assimp/code/AssetLib/3DS/3DSLoader.h
deleted file mode 100644
index f47fcfe..0000000
--- a/libs/assimp/code/AssetLib/3DS/3DSLoader.h
+++ /dev/null
@@ -1,289 +0,0 @@
-
-/*
-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  3DSLoader.h
- *  @brief 3DS File format loader
- */
-#ifndef AI_3DSIMPORTER_H_INC
-#define AI_3DSIMPORTER_H_INC
-#ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
-
-#include <assimp/BaseImporter.h>
-#include <assimp/types.h>
-
-
-#include "3DSHelper.h"
-#include <assimp/StreamReader.h>
-
-struct aiNode;
-
-namespace Assimp    {
-
-
-using namespace D3DS;
-
-// ---------------------------------------------------------------------------------
-/** Importer class for 3D Studio r3 and r4 3DS files
- */
-class Discreet3DSImporter : public BaseImporter {
-public:
-    Discreet3DSImporter();
-    ~Discreet3DSImporter();
-
-    // -------------------------------------------------------------------
-    /** 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;
-
-    // -------------------------------------------------------------------
-    /** Called prior to ReadFile().
-     * The function is a request to the importer to update its configuration
-     * basing on the Importer's configuration property list.
-     */
-    void SetupProperties(const Importer* pImp) 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;
-
-    // -------------------------------------------------------------------
-    /** Converts a temporary material to the outer representation
-     */
-    void ConvertMaterial(D3DS::Material& p_cMat,
-        aiMaterial& p_pcOut);
-
-    // -------------------------------------------------------------------
-    /** Read a chunk
-     *
-     *  @param pcOut Receives the current chunk
-     */
-    void ReadChunk(Discreet3DS::Chunk* pcOut);
-
-    // -------------------------------------------------------------------
-    /** Parse a percentage chunk. mCurrent will point to the next
-    * chunk behind afterwards. If no percentage chunk is found
-    * QNAN is returned.
-    */
-    ai_real ParsePercentageChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a color chunk. mCurrent will point to the next
-    * chunk behind afterwards. If no color chunk is found
-    * QNAN is returned in all members.
-    */
-    void ParseColorChunk(aiColor3D* p_pcOut,
-        bool p_bAcceptPercent = true);
-
-
-    // -------------------------------------------------------------------
-    /** Skip a chunk in the file
-    */
-    void SkipChunk();
-
-    // -------------------------------------------------------------------
-    /** Generate the nodegraph
-    */
-    void GenerateNodeGraph(aiScene* pcOut);
-
-    // -------------------------------------------------------------------
-    /** Parse a main top-level chunk in the file
-    */
-    void ParseMainChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a top-level chunk in the file
-    */
-    void ParseChunk(const char* name, unsigned int num);
-
-    // -------------------------------------------------------------------
-    /** Parse a top-level editor chunk in the file
-    */
-    void ParseEditorChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a top-level object chunk in the file
-    */
-    void ParseObjectChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a material chunk in the file
-    */
-    void ParseMaterialChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a mesh chunk in the file
-    */
-    void ParseMeshChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a light chunk in the file
-    */
-    void ParseLightChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a camera chunk in the file
-    */
-    void ParseCameraChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a face list chunk in the file
-    */
-    void ParseFaceChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a keyframe chunk in the file
-    */
-    void ParseKeyframeChunk();
-
-    // -------------------------------------------------------------------
-    /** Parse a hierarchy chunk in the file
-    */
-    void ParseHierarchyChunk(uint16_t parent);
-
-    // -------------------------------------------------------------------
-    /** Parse a texture chunk in the file
-    */
-    void ParseTextureChunk(D3DS::Texture* pcOut);
-
-    // -------------------------------------------------------------------
-    /** Convert the meshes in the file
-    */
-    void ConvertMeshes(aiScene* pcOut);
-
-    // -------------------------------------------------------------------
-    /** Replace the default material in the scene
-    */
-    void ReplaceDefaultMaterial();
-
-    bool ContainsTextures(unsigned int i) const {
-        return !mScene->mMaterials[i].sTexDiffuse.mMapName.empty() ||
-               !mScene->mMaterials[i].sTexBump.mMapName.empty() ||
-               !mScene->mMaterials[i].sTexOpacity.mMapName.empty() ||
-               !mScene->mMaterials[i].sTexEmissive.mMapName.empty() ||
-               !mScene->mMaterials[i].sTexSpecular.mMapName.empty() ||
-               !mScene->mMaterials[i].sTexShininess.mMapName.empty() ;
-    }
-
-    // -------------------------------------------------------------------
-    /** Convert the whole scene
-    */
-    void ConvertScene(aiScene* pcOut);
-
-    // -------------------------------------------------------------------
-    /** generate unique vertices for a mesh
-    */
-    void MakeUnique(D3DS::Mesh& sMesh);
-
-    // -------------------------------------------------------------------
-    /** Add a node to the node graph
-    */
-    void AddNodeToGraph(aiScene* pcSOut,aiNode* pcOut,D3DS::Node* pcIn,
-        aiMatrix4x4& absTrafo);
-
-    // -------------------------------------------------------------------
-    /** Search for a node in the graph.
-    * Called recursively
-    */
-    void InverseNodeSearch(D3DS::Node* pcNode,D3DS::Node* pcCurrent);
-
-    // -------------------------------------------------------------------
-    /** Apply the master scaling factor to the mesh
-    */
-    void ApplyMasterScale(aiScene* pScene);
-
-    // -------------------------------------------------------------------
-    /** Clamp all indices in the file to a valid range
-    */
-    void CheckIndices(D3DS::Mesh& sMesh);
-
-    // -------------------------------------------------------------------
-    /** Skip the TCB info in a track key
-    */
-    void SkipTCBInfo();
-
-protected:
-
-    /** Stream to read from */
-    StreamReaderLE* stream;
-
-    /** Last touched node index */
-    short mLastNodeIndex;
-
-    /** Current node, root node */
-    D3DS::Node* mCurrentNode, *mRootNode;
-
-    /** Scene under construction */
-    D3DS::Scene* mScene;
-
-    /** Ambient base color of the scene */
-    aiColor3D mClrAmbient;
-
-    /** Master scaling factor of the scene */
-    ai_real mMasterScale;
-
-    /** Path to the background image of the scene */
-    std::string mBackgroundImage;
-    bool bHasBG;
-
-    /** true if PRJ file */
-    bool bIsPrj;
-};
-
-} // end of namespace Assimp
-
-#endif // !! ASSIMP_BUILD_NO_3DS_IMPORTER
-
-#endif // AI_3DSIMPORTER_H_INC