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diff --git a/thirdparty/assimp/code/FBXDeformer.cpp b/thirdparty/assimp/code/FBXDeformer.cpp
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+++ b/thirdparty/assimp/code/FBXDeformer.cpp
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2019, 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  FBXNoteAttribute.cpp
+ *  @brief Assimp::FBX::NodeAttribute (and subclasses) implementation
+ */
+
+#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
+
+#include "FBXParser.h"
+#include "FBXDocument.h"
+#include "FBXMeshGeometry.h"
+#include "FBXImporter.h"
+#include "FBXDocumentUtil.h"
+
+namespace Assimp {
+namespace FBX {
+
+using namespace Util;
+
+// ------------------------------------------------------------------------------------------------
+Deformer::Deformer(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+    : Object(id,element,name)
+{
+    const Scope& sc = GetRequiredScope(element);
+
+    const std::string& classname = ParseTokenAsString(GetRequiredToken(element,2));
+    props = GetPropertyTable(doc,"Deformer.Fbx" + classname,element,sc,true);
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Deformer::~Deformer()
+{
+
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Cluster::Cluster(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+: Deformer(id,element,doc,name)
+, node()
+{
+    const Scope& sc = GetRequiredScope(element);
+
+    const Element* const Indexes = sc["Indexes"];
+    const Element* const Weights = sc["Weights"];
+
+    const Element& Transform = GetRequiredElement(sc,"Transform",&element);
+    const Element& TransformLink = GetRequiredElement(sc,"TransformLink",&element);
+
+    transform = ReadMatrix(Transform);
+    transformLink = ReadMatrix(TransformLink);
+
+    // it is actually possible that there be Deformer's with no weights
+    if (!!Indexes != !!Weights) {
+        DOMError("either Indexes or Weights are missing from Cluster",&element);
+    }
+
+    if(Indexes) {
+        ParseVectorDataArray(indices,*Indexes);
+        ParseVectorDataArray(weights,*Weights);
+    }
+
+    if(indices.size() != weights.size()) {
+        DOMError("sizes of index and weight array don't match up",&element);
+    }
+
+    // read assigned node
+    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"Model");
+    for(const Connection* con : conns) {
+        const Model* const mod = ProcessSimpleConnection<Model>(*con, false, "Model -> Cluster", element);
+        if(mod) {
+            node = mod;
+            break;
+        }
+    }
+
+    if (!node) {
+        DOMError("failed to read target Node for Cluster",&element);
+    }
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Cluster::~Cluster()
+{
+
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Skin::Skin(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+: Deformer(id,element,doc,name)
+, accuracy( 0.0f ) {
+    const Scope& sc = GetRequiredScope(element);
+
+    const Element* const Link_DeformAcuracy = sc["Link_DeformAcuracy"];
+    if(Link_DeformAcuracy) {
+        accuracy = ParseTokenAsFloat(GetRequiredToken(*Link_DeformAcuracy,0));
+    }
+
+    // resolve assigned clusters
+    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"Deformer");
+
+    clusters.reserve(conns.size());
+    for(const Connection* con : conns) {
+
+        const Cluster* const cluster = ProcessSimpleConnection<Cluster>(*con, false, "Cluster -> Skin", element);
+        if(cluster) {
+            clusters.push_back(cluster);
+            continue;
+        }
+    }
+}
+
+
+// ------------------------------------------------------------------------------------------------
+Skin::~Skin()
+{
+
+}
+// ------------------------------------------------------------------------------------------------
+BlendShape::BlendShape(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+    : Deformer(id, element, doc, name)
+{
+    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(), "Deformer");
+    blendShapeChannels.reserve(conns.size());
+    for (const Connection* con : conns) {
+        const BlendShapeChannel* const bspc = ProcessSimpleConnection<BlendShapeChannel>(*con, false, "BlendShapeChannel -> BlendShape", element);
+        if (bspc) {
+            blendShapeChannels.push_back(bspc);
+            continue;
+        }
+    }
+}
+// ------------------------------------------------------------------------------------------------
+BlendShape::~BlendShape()
+{
+
+}
+// ------------------------------------------------------------------------------------------------
+BlendShapeChannel::BlendShapeChannel(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+    : Deformer(id, element, doc, name)
+{
+    const Scope& sc = GetRequiredScope(element);
+    const Element* const DeformPercent = sc["DeformPercent"];
+    if (DeformPercent) {
+        percent = ParseTokenAsFloat(GetRequiredToken(*DeformPercent, 0));
+    }
+    const Element* const FullWeights = sc["FullWeights"];
+    if (FullWeights) {
+        ParseVectorDataArray(fullWeights, *FullWeights);
+    }
+    const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(), "Geometry");
+    shapeGeometries.reserve(conns.size());
+    for (const Connection* con : conns) {
+        const ShapeGeometry* const sg = ProcessSimpleConnection<ShapeGeometry>(*con, false, "Shape -> BlendShapeChannel", element);
+        if (sg) {
+            shapeGeometries.push_back(sg);
+            continue;
+        }
+    }
+}
+// ------------------------------------------------------------------------------------------------
+BlendShapeChannel::~BlendShapeChannel()
+{
+
+}
+// ------------------------------------------------------------------------------------------------
+}
+}
+#endif
+