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diff --git a/3rdparty/assimp/code/SmoothingGroups.inl b/3rdparty/assimp/code/SmoothingGroups.inl
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--- a/3rdparty/assimp/code/SmoothingGroups.inl
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-/*
----------------------------------------------------------------------------
-Open Asset Import Library (ASSIMP)
----------------------------------------------------------------------------
-
-Copyright (c) 2006-2010, ASSIMP Development 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 Development 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 Generation of normal vectors basing on smoothing groups */
-
-#ifndef AI_SMOOTHINGGROUPS_INL_INCLUDED
-#define AI_SMOOTHINGGROUPS_INL_INCLUDED
-
-// internal headers
-#include "SGSpatialSort.h"
-
-// CRT header
-#include <algorithm>
-
-using namespace Assimp;
-
-// ------------------------------------------------------------------------------------------------
-template <class T>
-void ComputeNormalsWithSmoothingsGroups(MeshWithSmoothingGroups<T>& sMesh)
-{
-    // First generate face normals
-    sMesh.mNormals.resize(sMesh.mPositions.size(),aiVector3D());
-    for ( unsigned int a = 0; a < sMesh.mFaces.size(); a++)
-    {
-        T& face = sMesh.mFaces[a];
-
-        aiVector3D* pV1 = &sMesh.mPositions[face.mIndices[0]];
-        aiVector3D* pV2 = &sMesh.mPositions[face.mIndices[1]];
-        aiVector3D* pV3 = &sMesh.mPositions[face.mIndices[2]];
-
-        aiVector3D pDelta1 = *pV2 - *pV1;
-        aiVector3D pDelta2 = *pV3 - *pV1;
-        aiVector3D vNor = pDelta1 ^ pDelta2;
-
-        for (unsigned int c = 0; c < 3;++c)
-            sMesh.mNormals[face.mIndices[c]] = vNor;
-    }
-
-    // calculate the position bounds so we have a reliable epsilon to check position differences against
-    aiVector3D minVec( 1e10f, 1e10f, 1e10f), maxVec( -1e10f, -1e10f, -1e10f);
-    for ( unsigned int a = 0; a < sMesh.mPositions.size(); a++)
-    {
-        minVec.x = std::min( minVec.x, sMesh.mPositions[a].x);
-        minVec.y = std::min( minVec.y, sMesh.mPositions[a].y);
-        minVec.z = std::min( minVec.z, sMesh.mPositions[a].z);
-        maxVec.x = std::max( maxVec.x, sMesh.mPositions[a].x);
-        maxVec.y = std::max( maxVec.y, sMesh.mPositions[a].y);
-        maxVec.z = std::max( maxVec.z, sMesh.mPositions[a].z);
-    }
-    const float posEpsilon = (maxVec - minVec).Length() * 1e-5f;
-    std::vector<aiVector3D> avNormals;
-    avNormals.resize(sMesh.mNormals.size());
-
-    // now generate the spatial sort tree
-    SGSpatialSort sSort;
-    for ( typename std::vector<T>::iterator i =  sMesh.mFaces.begin();
-        i != sMesh.mFaces.end();++i)
-    {
-        for (unsigned int c = 0; c < 3;++c)
-            sSort.Add(sMesh.mPositions[(*i).mIndices[c]],(*i).mIndices[c],(*i).iSmoothGroup);
-    }
-    sSort.Prepare();
-
-    std::vector<bool> vertexDone(sMesh.mPositions.size(),false);
-    for ( typename std::vector<T>::iterator i =  sMesh.mFaces.begin();
-        i != sMesh.mFaces.end();++i)
-    {
-        std::vector<unsigned int> poResult;
-        for (unsigned int c = 0; c < 3;++c)
-        {
-            register unsigned int idx = (*i).mIndices[c];
-            if (vertexDone[idx])continue;
-
-            sSort.FindPositions(sMesh.mPositions[idx],(*i).iSmoothGroup,
-                posEpsilon,poResult);
-
-            aiVector3D vNormals;
-            for (std::vector<unsigned int>::const_iterator
-                a =  poResult.begin();
-                a != poResult.end();++a)
-            {
-                vNormals += sMesh.mNormals[(*a)];
-            }
-            vNormals.Normalize();
-
-            // write back into all affected normals
-            for (std::vector<unsigned int>::const_iterator
-                a =  poResult.begin();
-                a != poResult.end();++a)
-            {
-                idx = *a;
-                avNormals [idx] = vNormals;
-                vertexDone[idx] = true;
-            }
-        }
-    }
-    sMesh.mNormals = avNormals;
-}
-
-#endif // !! AI_SMOOTHINGGROUPS_INL_INCLUDED