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diff --git a/src/mesh/assimp-master/code/PostProcessing/GenBoundingBoxesProcess.cpp b/src/mesh/assimp-master/code/PostProcessing/GenBoundingBoxesProcess.cpp
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+/*
+---------------------------------------------------------------------------
+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_GENBOUNDINGBOXES_PROCESS
+
+#include "PostProcessing/GenBoundingBoxesProcess.h"
+
+#include <assimp/postprocess.h>
+#include <assimp/scene.h>
+
+namespace Assimp {
+
+GenBoundingBoxesProcess::GenBoundingBoxesProcess()
+: BaseProcess() {
+
+}
+
+GenBoundingBoxesProcess::~GenBoundingBoxesProcess() {
+ // empty
+}
+
+bool GenBoundingBoxesProcess::IsActive(unsigned int pFlags) const {
+ return 0 != ( pFlags & aiProcess_GenBoundingBoxes );
+}
+
+void checkMesh(aiMesh* mesh, aiVector3D& min, aiVector3D& max) {
+ ai_assert(nullptr != mesh);
+
+ if (0 == mesh->mNumVertices) {
+ return;
+ }
+
+ for (unsigned int i = 0; i < mesh->mNumVertices; ++i) {
+ const aiVector3D &pos = mesh->mVertices[i];
+ if (pos.x < min.x) {
+ min.x = pos.x;
+ }
+ if (pos.y < min.y) {
+ min.y = pos.y;
+ }
+ if (pos.z < min.z) {
+ min.z = pos.z;
+ }
+
+ if (pos.x > max.x) {
+ max.x = pos.x;
+ }
+ if (pos.y > max.y) {
+ max.y = pos.y;
+ }
+ if (pos.z > max.z) {
+ max.z = pos.z;
+ }
+ }
+}
+
+void GenBoundingBoxesProcess::Execute(aiScene* pScene) {
+ if (nullptr == pScene) {
+ return;
+ }
+
+ for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
+ aiMesh* mesh = pScene->mMeshes[i];
+ if (nullptr == mesh) {
+ continue;
+ }
+
+ aiVector3D min(999999, 999999, 999999), max(-999999, -999999, -999999);
+ checkMesh(mesh, min, max);
+ mesh->mAABB.mMin = min;
+ mesh->mAABB.mMax = max;
+ }
+}
+
+} // Namespace Assimp
+
+#endif // ASSIMP_BUILD_NO_GENBOUNDINGBOXES_PROCESS