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diff --git a/src/mesh/assimp-master/include/assimp/Exporter.hpp b/src/mesh/assimp-master/include/assimp/Exporter.hpp
deleted file mode 100644
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--- a/src/mesh/assimp-master/include/assimp/Exporter.hpp
+++ /dev/null
@@ -1,509 +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  Exporter.hpp
-*  @brief Defines the CPP-API for the Assimp export interface
-*/
-#pragma once
-#ifndef AI_EXPORT_HPP_INC
-#define AI_EXPORT_HPP_INC
-
-#ifdef __GNUC__
-#pragma GCC system_header
-#endif
-
-#ifndef ASSIMP_BUILD_NO_EXPORT
-
-#include "cexport.h"
-#include <map>
-#include <functional>
-
-namespace Assimp {
-
-class ExporterPimpl;
-class IOSystem;
-class ProgressHandler;
-
-// ----------------------------------------------------------------------------------
-/** CPP-API: The Exporter class forms an C++ interface to the export functionality
- * of the Open Asset Import Library. Note that the export interface is available
- * only if Assimp has been built with ASSIMP_BUILD_NO_EXPORT not defined.
- *
- * The interface is modeled after the importer interface and mostly
- * symmetric. The same rules for threading etc. apply.
- *
- * In a nutshell, there are two export interfaces: #Export, which writes the
- * output file(s) either to the regular file system or to a user-supplied
- * #IOSystem, and #ExportToBlob which returns a linked list of memory
- * buffers (blob), each referring to one output file (in most cases
- * there will be only one output file of course, but this extra complexity is
- * needed since Assimp aims at supporting a wide range of file formats).
- *
- * #ExportToBlob is especially useful if you intend to work
- * with the data in-memory.
-*/
-class ASSIMP_API ExportProperties;
-
-class ASSIMP_API Exporter {
-public:
-    /** Function pointer type of a Export worker function */
-    typedef void (*fpExportFunc)(const char *, IOSystem *, const aiScene *, const ExportProperties *);
-
-    /** Internal description of an Assimp export format option */
-    struct ExportFormatEntry {
-        /// Public description structure to be returned by aiGetExportFormatDescription()
-        aiExportFormatDesc mDescription;
-
-        // Worker function to do the actual exporting
-        fpExportFunc mExportFunction;
-
-        // Post-processing steps to be executed PRIOR to invoking mExportFunction
-        unsigned int mEnforcePP;
-
-        // Constructor to fill all entries
-        ExportFormatEntry(const char *pId, const char *pDesc, const char *pExtension, fpExportFunc pFunction, unsigned int pEnforcePP = 0u) {
-            mDescription.id = pId;
-            mDescription.description = pDesc;
-            mDescription.fileExtension = pExtension;
-            mExportFunction = pFunction;
-            mEnforcePP = pEnforcePP;
-        }
-
-        ExportFormatEntry() :
-                mExportFunction(),
-                mEnforcePP() {
-            mDescription.id = nullptr;
-            mDescription.description = nullptr;
-            mDescription.fileExtension = nullptr;
-        }
-    };
-
-    /**
-     *  @brief  The class constructor.
-     */
-    Exporter();
-
-    /**
-    *  @brief  The class destructor.
-    */
-    ~Exporter();
-
-    // -------------------------------------------------------------------
-    /** Supplies a custom IO handler to the exporter to use to open and
-     * access files.
-     *
-     * If you need #Export to use custom IO logic to access the files,
-     * you need to supply a custom implementation of IOSystem and
-     * IOFile to the exporter.
-     *
-     * #Exporter takes ownership of the object and will destroy it
-     * afterwards. The previously assigned handler will be deleted.
-     * Pass NULL to take again ownership of your IOSystem and reset Assimp
-     * to use its default implementation, which uses plain file IO.
-     *
-     * @param pIOHandler The IO handler to be used in all file accesses
-     *   of the Importer. */
-    void SetIOHandler(IOSystem *pIOHandler);
-
-    // -------------------------------------------------------------------
-    /** Retrieves the IO handler that is currently set.
-     * You can use #IsDefaultIOHandler() to check whether the returned
-     * interface is the default IO handler provided by ASSIMP. The default
-     * handler is active as long the application doesn't supply its own
-     * custom IO handler via #SetIOHandler().
-     * @return A valid IOSystem interface, never NULL. */
-    IOSystem *GetIOHandler() const;
-
-    // -------------------------------------------------------------------
-    /** Checks whether a default IO handler is active
-     * A default handler is active as long the application doesn't
-     * supply its own custom IO handler via #SetIOHandler().
-     * @return true by default */
-    bool IsDefaultIOHandler() const;
-
-    // -------------------------------------------------------------------
-    /** Supplies a custom progress handler to the exporter. This
-     *  interface exposes an #Update() callback, which is called
-     *  more or less periodically (please don't sue us if it
-     *  isn't as periodically as you'd like it to have ...).
-     *  This can be used to implement progress bars and loading
-     *  timeouts.
-     *  @param pHandler Progress callback interface. Pass nullptr to
-     *    disable progress reporting.
-     *  @note Progress handlers can be used to abort the loading
-     *    at almost any time.*/
-    void SetProgressHandler(ProgressHandler *pHandler);
-
-    // -------------------------------------------------------------------
-    /** Exports the given scene to a chosen file format. Returns the exported
-    * data as a binary blob which you can write into a file or something.
-    * When you're done with the data, simply let the #Exporter instance go
-    * out of scope to have it released automatically.
-    * @param pScene The scene to export. Stays in possession of the caller,
-    *   is not changed by the function.
-    * @param pFormatId ID string to specify to which format you want to
-    *   export to. Use
-    * #GetExportFormatCount / #GetExportFormatDescription to learn which
-    *   export formats are available.
-    * @param pPreprocessing See the documentation for #Export
-    * @return the exported data or nullptr in case of error.
-    * @note If the Exporter instance did already hold a blob from
-    *   a previous call to #ExportToBlob, it will be disposed.
-    *   Any IO handlers set via #SetIOHandler are ignored here.
-    * @note Use aiCopyScene() to get a modifiable copy of a previously
-    *   imported scene. */
-    const aiExportDataBlob *ExportToBlob(const aiScene *pScene, const char *pFormatId,
-            unsigned int pPreprocessing = 0u, const ExportProperties *pProperties = nullptr);
-    const aiExportDataBlob *ExportToBlob(const aiScene *pScene, const std::string &pFormatId,
-            unsigned int pPreprocessing = 0u, const ExportProperties *pProperties = nullptr);
-
-    // -------------------------------------------------------------------
-    /** Convenience function to export directly to a file. Use
-     *  #SetIOSystem to supply a custom IOSystem to gain fine-grained control
-     *  about the output data flow of the export process.
-     * @param pBlob A data blob obtained from a previous call to #aiExportScene. Must not be nullptr.
-     * @param pPath Full target file name. Target must be accessible.
-     * @param pPreprocessing Accepts any choice of the #aiPostProcessSteps enumerated
-     *   flags, but in reality only a subset of them makes sense here. Specifying
-     *   'preprocessing' flags is useful if the input scene does not conform to
-     *   Assimp's default conventions as specified in the @link data Data Structures Page @endlink.
-     *   In short, this means the geometry data should use a right-handed coordinate systems, face
-     *   winding should be counter-clockwise and the UV coordinate origin is assumed to be in
-     *   the upper left. The #aiProcess_MakeLeftHanded, #aiProcess_FlipUVs and
-     *   #aiProcess_FlipWindingOrder flags are used in the import side to allow users
-     *   to have those defaults automatically adapted to their conventions. Specifying those flags
-     *   for exporting has the opposite effect, respectively. Some other of the
-     *   #aiPostProcessSteps enumerated values may be useful as well, but you'll need
-     *   to try out what their effect on the exported file is. Many formats impose
-     *   their own restrictions on the structure of the geometry stored therein,
-     *   so some preprocessing may have little or no effect at all, or may be
-     *   redundant as exporters would apply them anyhow. A good example
-     *   is triangulation - whilst you can enforce it by specifying
-     *   the #aiProcess_Triangulate flag, most export formats support only
-     *   triangulate data so they would run the step even if it wasn't requested.
-     *
-     *   If assimp detects that the input scene was directly taken from the importer side of
-     *   the library (i.e. not copied using aiCopyScene and potentially modified afterwards),
-     *   any post-processing steps already applied to the scene will not be applied again, unless
-     *   they show non-idempotent behavior (#aiProcess_MakeLeftHanded, #aiProcess_FlipUVs and
-     *   #aiProcess_FlipWindingOrder).
-     * @return AI_SUCCESS if everything was fine.
-     * @note Use aiCopyScene() to get a modifiable copy of a previously
-     *   imported scene.*/
-    aiReturn Export(const aiScene *pScene, const char *pFormatId, const char *pPath,
-            unsigned int pPreprocessing = 0u, const ExportProperties *pProperties = nullptr);
-    aiReturn Export(const aiScene *pScene, const std::string &pFormatId, const std::string &pPath,
-            unsigned int pPreprocessing = 0u, const ExportProperties *pProperties = nullptr);
-
-    // -------------------------------------------------------------------
-    /** Returns an error description of an error that occurred in #Export
-     *    or #ExportToBlob
-     *
-     * Returns an empty string if no error occurred.
-     * @return A description of the last error, an empty string if no
-     *   error occurred. The string is never nullptr.
-     *
-     * @note The returned function remains valid until one of the
-     * following methods is called: #Export, #ExportToBlob, #FreeBlob */
-    const char *GetErrorString() const;
-
-    // -------------------------------------------------------------------
-    /** Return the blob obtained from the last call to #ExportToBlob */
-    const aiExportDataBlob *GetBlob() const;
-
-    // -------------------------------------------------------------------
-    /** Orphan the blob from the last call to #ExportToBlob. This means
-     *  the caller takes ownership and is thus responsible for calling
-     *  the C API function #aiReleaseExportBlob to release it. */
-    const aiExportDataBlob *GetOrphanedBlob() const;
-
-    // -------------------------------------------------------------------
-    /** Frees the current blob.
-     *
-     *  The function does nothing if no blob has previously been
-     *  previously produced via #ExportToBlob. #FreeBlob is called
-     *  automatically by the destructor. The only reason to call
-     *  it manually would be to reclaim as much storage as possible
-     *  without giving up the #Exporter instance yet. */
-    void FreeBlob();
-
-    // -------------------------------------------------------------------
-    /** Returns the number of export file formats available in the current
-     *  Assimp build. Use #Exporter::GetExportFormatDescription to
-     *  retrieve infos of a specific export format.
-     *
-     *  This includes built-in exporters as well as exporters registered
-     *  using #RegisterExporter.
-     **/
-    size_t GetExportFormatCount() const;
-
-    // -------------------------------------------------------------------
-    /** Returns a description of the nth export file format. Use #
-     *  #Exporter::GetExportFormatCount to learn how many export
-     *  formats are supported.
-     *
-     * The returned pointer is of static storage duration if the
-     * pIndex pertains to a built-in exporter (i.e. one not registered
-     * via #RegistrerExporter). It is restricted to the life-time of the
-     * #Exporter instance otherwise.
-     *
-     * @param pIndex Index of the export format to retrieve information
-     *  for. Valid range is 0 to #Exporter::GetExportFormatCount
-     * @return A description of that specific export format.
-     *  NULL if pIndex is out of range. */
-    const aiExportFormatDesc *GetExportFormatDescription(size_t pIndex) const;
-
-    // -------------------------------------------------------------------
-    /** Register a custom exporter. Custom export formats are limited to
-     *    to the current #Exporter instance and do not affect the
-     *    library globally. The indexes under which the format's
-     *    export format description can be queried are assigned
-     *    monotonously.
-     *  @param desc Exporter description.
-     *  @return aiReturn_SUCCESS if the export format was successfully
-     *    registered. A common cause that would prevent an exporter
-     *    from being registered is that its format id is already
-     *    occupied by another format. */
-    aiReturn RegisterExporter(const ExportFormatEntry &desc);
-
-    // -------------------------------------------------------------------
-    /** Remove an export format previously registered with #RegisterExporter
-     *  from the #Exporter instance (this can also be used to drop
-     *  built-in exporters because those are implicitly registered
-     *  using #RegisterExporter).
-     *  @param id Format id to be unregistered, this refers to the
-     *    'id' field of #aiExportFormatDesc.
-     *  @note Calling this method on a format description not yet registered
-     *    has no effect.*/
-    void UnregisterExporter(const char *id);
-
-protected:
-    // Just because we don't want you to know how we're hacking around.
-    ExporterPimpl *pimpl;
-};
-
-class ASSIMP_API ExportProperties {
-public:
-    // Data type to store the key hash
-    typedef unsigned int KeyType;
-
-    // typedefs for our four configuration maps.
-    // We don't need more, so there is no need for a generic solution
-    typedef std::map<KeyType, int> IntPropertyMap;
-    typedef std::map<KeyType, ai_real> FloatPropertyMap;
-    typedef std::map<KeyType, std::string> StringPropertyMap;
-    typedef std::map<KeyType, aiMatrix4x4> MatrixPropertyMap;
-    typedef std::map<KeyType, std::function<void *(void *)>> CallbackPropertyMap;
-
-public:
-    /** Standard constructor
-    * @see ExportProperties()
-    */
-    ExportProperties();
-
-    // -------------------------------------------------------------------
-    /** Copy constructor.
-     *
-     * This copies the configuration properties of another ExportProperties.
-     * @see ExportProperties(const ExportProperties& other)
-     */
-    ExportProperties(const ExportProperties &other);
-
-    // -------------------------------------------------------------------
-    /** Set an integer configuration property.
-     * @param szName Name of the property. All supported properties
-     *   are defined in the aiConfig.g header (all constants share the
-     *   prefix AI_CONFIG_XXX and are simple strings).
-     * @param iValue New value of the property
-     * @return true if the property was set before. The new value replaces
-     *   the previous value in this case.
-     * @note Property of different types (float, int, string ..) are kept
-     *   on different stacks, so calling SetPropertyInteger() for a
-     *   floating-point property has no effect - the loader will call
-     *   GetPropertyFloat() to read the property, but it won't be there.
-     */
-    bool SetPropertyInteger(const char *szName, int iValue);
-
-    // -------------------------------------------------------------------
-    /** Set a boolean configuration property. Boolean properties
-     *  are stored on the integer stack internally so it's possible
-     *  to set them via #SetPropertyBool and query them with
-     *  #GetPropertyBool and vice versa.
-     * @see SetPropertyInteger()
-     */
-    bool SetPropertyBool(const char *szName, bool value) {
-        return SetPropertyInteger(szName, value);
-    }
-
-    // -------------------------------------------------------------------
-    /** Set a floating-point configuration property.
-     * @see SetPropertyInteger()
-     */
-    bool SetPropertyFloat(const char *szName, ai_real fValue);
-
-    // -------------------------------------------------------------------
-    /** Set a string configuration property.
-     * @see SetPropertyInteger()
-     */
-    bool SetPropertyString(const char *szName, const std::string &sValue);
-
-    // -------------------------------------------------------------------
-    /** Set a matrix configuration property.
-     * @see SetPropertyInteger()
-     */
-    bool SetPropertyMatrix(const char *szName, const aiMatrix4x4 &sValue);
-
-    bool SetPropertyCallback(const char *szName, const std::function<void *(void *)> &f);
-
-    // -------------------------------------------------------------------
-    /** Get a configuration property.
-     * @param szName Name of the property. All supported properties
-     *   are defined in the aiConfig.g header (all constants share the
-     *   prefix AI_CONFIG_XXX).
-     * @param iErrorReturn Value that is returned if the property
-     *   is not found.
-     * @return Current value of the property
-     * @note Property of different types (float, int, string ..) are kept
-     *   on different lists, so calling SetPropertyInteger() for a
-     *   floating-point property has no effect - the loader will call
-     *   GetPropertyFloat() to read the property, but it won't be there.
-     */
-    int GetPropertyInteger(const char *szName,
-            int iErrorReturn = 0xffffffff) const;
-
-    // -------------------------------------------------------------------
-    /** Get a boolean configuration property. Boolean properties
-     *  are stored on the integer stack internally so it's possible
-     *  to set them via #SetPropertyBool and query them with
-     *  #GetPropertyBool and vice versa.
-     * @see GetPropertyInteger()
-     */
-    bool GetPropertyBool(const char *szName, bool bErrorReturn = false) const {
-        return GetPropertyInteger(szName, bErrorReturn) != 0;
-    }
-
-    // -------------------------------------------------------------------
-    /** Get a floating-point configuration property
-     * @see GetPropertyInteger()
-     */
-    ai_real GetPropertyFloat(const char *szName,
-            ai_real fErrorReturn = 10e10f) const;
-
-    // -------------------------------------------------------------------
-    /** Get a string configuration property
-     *
-     *  The return value remains valid until the property is modified.
-     * @see GetPropertyInteger()
-     */
-    const std::string GetPropertyString(const char *szName,
-            const std::string &sErrorReturn = "") const;
-
-    // -------------------------------------------------------------------
-    /** Get a matrix configuration property
-     *
-     *  The return value remains valid until the property is modified.
-     * @see GetPropertyInteger()
-     */
-    const aiMatrix4x4 GetPropertyMatrix(const char *szName,
-            const aiMatrix4x4 &sErrorReturn = aiMatrix4x4()) const;
-
-    std::function<void *(void *)> GetPropertyCallback(const char* szName) const;
-
-    // -------------------------------------------------------------------
-    /** Determine a integer configuration property has been set.
-    * @see HasPropertyInteger()
-     */
-    bool HasPropertyInteger(const char *szName) const;
-
-    /** Determine a boolean configuration property has been set.
-    * @see HasPropertyBool()
-     */
-    bool HasPropertyBool(const char *szName) const;
-
-    /** Determine a boolean configuration property has been set.
-    * @see HasPropertyFloat()
-     */
-    bool HasPropertyFloat(const char *szName) const;
-
-    /** Determine a String configuration property has been set.
-    * @see HasPropertyString()
-     */
-    bool HasPropertyString(const char *szName) const;
-
-    /** Determine a Matrix configuration property has been set.
-    * @see HasPropertyMatrix()
-     */
-    bool HasPropertyMatrix(const char *szName) const;
-
-    bool HasPropertyCallback(const char *szName) const;
-
-    /** List of integer properties */
-    IntPropertyMap mIntProperties;
-
-    /** List of floating-point properties */
-    FloatPropertyMap mFloatProperties;
-
-    /** List of string properties */
-    StringPropertyMap mStringProperties;
-
-    /** List of Matrix properties */
-    MatrixPropertyMap mMatrixProperties;
-
-    CallbackPropertyMap mCallbackProperties;
-};
-
-// ----------------------------------------------------------------------------------
-inline const aiExportDataBlob *Exporter::ExportToBlob(const aiScene *pScene, const std::string &pFormatId,
-        unsigned int pPreprocessing, const ExportProperties *pProperties) {
-    return ExportToBlob(pScene, pFormatId.c_str(), pPreprocessing, pProperties);
-}
-
-// ----------------------------------------------------------------------------------
-inline aiReturn Exporter ::Export(const aiScene *pScene, const std::string &pFormatId,
-        const std::string &pPath, unsigned int pPreprocessing,
-        const ExportProperties *pProperties) {
-    return Export(pScene, pFormatId.c_str(), pPath.c_str(), pPreprocessing, pProperties);
-}
-
-} // namespace Assimp
-
-#endif // ASSIMP_BUILD_NO_EXPORT
-#endif // AI_EXPORT_HPP_INC