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diff --git a/thirdparty/assimp/code/FBX/FBXAnimation.cpp b/thirdparty/assimp/code/FBX/FBXAnimation.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 FBXAnimation.cpp
+ * @brief Assimp::FBX::AnimationCurve, Assimp::FBX::AnimationCurveNode,
+ * Assimp::FBX::AnimationLayer, Assimp::FBX::AnimationStack
+ */
+
+#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
+
+#include "FBXParser.h"
+#include "FBXDocument.h"
+#include "FBXImporter.h"
+#include "FBXDocumentUtil.h"
+
+namespace Assimp {
+namespace FBX {
+
+using namespace Util;
+
+// ------------------------------------------------------------------------------------------------
+AnimationCurve::AnimationCurve(uint64_t id, const Element& element, const std::string& name, const Document& /*doc*/)
+: Object(id, element, name)
+{
+ const Scope& sc = GetRequiredScope(element);
+ const Element& KeyTime = GetRequiredElement(sc,"KeyTime");
+ const Element& KeyValueFloat = GetRequiredElement(sc,"KeyValueFloat");
+
+ ParseVectorDataArray(keys, KeyTime);
+ ParseVectorDataArray(values, KeyValueFloat);
+
+ if(keys.size() != values.size()) {
+ DOMError("the number of key times does not match the number of keyframe values",&KeyTime);
+ }
+
+ // check if the key times are well-ordered
+ if(!std::equal(keys.begin(), keys.end() - 1, keys.begin() + 1, std::less<KeyTimeList::value_type>())) {
+ DOMError("the keyframes are not in ascending order",&KeyTime);
+ }
+
+ const Element* KeyAttrDataFloat = sc["KeyAttrDataFloat"];
+ if(KeyAttrDataFloat) {
+ ParseVectorDataArray(attributes, *KeyAttrDataFloat);
+ }
+
+ const Element* KeyAttrFlags = sc["KeyAttrFlags"];
+ if(KeyAttrFlags) {
+ ParseVectorDataArray(flags, *KeyAttrFlags);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationCurve::~AnimationCurve()
+{
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationCurveNode::AnimationCurveNode(uint64_t id, const Element& element, const std::string& name,
+ const Document& doc, const char* const * target_prop_whitelist /*= NULL*/,
+ size_t whitelist_size /*= 0*/)
+: Object(id, element, name)
+, target()
+, doc(doc)
+{
+ const Scope& sc = GetRequiredScope(element);
+
+ // find target node
+ const char* whitelist[] = {"Model","NodeAttribute","Deformer"};
+ const std::vector<const Connection*>& conns = doc.GetConnectionsBySourceSequenced(ID(),whitelist,3);
+
+ for(const Connection* con : conns) {
+
+ // link should go for a property
+ if (!con->PropertyName().length()) {
+ continue;
+ }
+
+ if(target_prop_whitelist) {
+ const char* const s = con->PropertyName().c_str();
+ bool ok = false;
+ for (size_t i = 0; i < whitelist_size; ++i) {
+ if (!strcmp(s, target_prop_whitelist[i])) {
+ ok = true;
+ break;
+ }
+ }
+
+ if (!ok) {
+ throw std::range_error("AnimationCurveNode target property is not in whitelist");
+ }
+ }
+
+ const Object* const ob = con->DestinationObject();
+ if(!ob) {
+ DOMWarning("failed to read destination object for AnimationCurveNode->Model link, ignoring",&element);
+ continue;
+ }
+
+ // XXX support constraints as DOM class
+ //ai_assert(dynamic_cast<const Model*>(ob) || dynamic_cast<const NodeAttribute*>(ob));
+ target = ob;
+ if(!target) {
+ continue;
+ }
+
+ prop = con->PropertyName();
+ break;
+ }
+
+ if(!target) {
+ DOMWarning("failed to resolve target Model/NodeAttribute/Constraint for AnimationCurveNode",&element);
+ }
+
+ props = GetPropertyTable(doc,"AnimationCurveNode.FbxAnimCurveNode",element,sc,false);
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationCurveNode::~AnimationCurveNode()
+{
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+const AnimationCurveMap& AnimationCurveNode::Curves() const
+{
+ if ( curves.empty() ) {
+ // resolve attached animation curves
+ const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationCurve");
+
+ for(const Connection* con : conns) {
+
+ // link should go for a property
+ if (!con->PropertyName().length()) {
+ continue;
+ }
+
+ const Object* const ob = con->SourceObject();
+ if(!ob) {
+ DOMWarning("failed to read source object for AnimationCurve->AnimationCurveNode link, ignoring",&element);
+ continue;
+ }
+
+ const AnimationCurve* const anim = dynamic_cast<const AnimationCurve*>(ob);
+ if(!anim) {
+ DOMWarning("source object for ->AnimationCurveNode link is not an AnimationCurve",&element);
+ continue;
+ }
+
+ curves[con->PropertyName()] = anim;
+ }
+ }
+
+ return curves;
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationLayer::AnimationLayer(uint64_t id, const Element& element, const std::string& name, const Document& doc)
+: Object(id, element, name)
+, doc(doc)
+{
+ const Scope& sc = GetRequiredScope(element);
+
+ // note: the props table here bears little importance and is usually absent
+ props = GetPropertyTable(doc,"AnimationLayer.FbxAnimLayer",element,sc, true);
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationLayer::~AnimationLayer()
+{
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationCurveNodeList AnimationLayer::Nodes(const char* const * target_prop_whitelist /*= NULL*/,
+ size_t whitelist_size /*= 0*/) const
+{
+ AnimationCurveNodeList nodes;
+
+ // resolve attached animation nodes
+ const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationCurveNode");
+ nodes.reserve(conns.size());
+
+ for(const Connection* con : conns) {
+
+ // link should not go to a property
+ if (con->PropertyName().length()) {
+ continue;
+ }
+
+ const Object* const ob = con->SourceObject();
+ if(!ob) {
+ DOMWarning("failed to read source object for AnimationCurveNode->AnimationLayer link, ignoring",&element);
+ continue;
+ }
+
+ const AnimationCurveNode* const anim = dynamic_cast<const AnimationCurveNode*>(ob);
+ if(!anim) {
+ DOMWarning("source object for ->AnimationLayer link is not an AnimationCurveNode",&element);
+ continue;
+ }
+
+ if(target_prop_whitelist) {
+ const char* s = anim->TargetProperty().c_str();
+ bool ok = false;
+ for (size_t i = 0; i < whitelist_size; ++i) {
+ if (!strcmp(s, target_prop_whitelist[i])) {
+ ok = true;
+ break;
+ }
+ }
+ if(!ok) {
+ continue;
+ }
+ }
+ nodes.push_back(anim);
+ }
+
+ return nodes; // pray for NRVO
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationStack::AnimationStack(uint64_t id, const Element& element, const std::string& name, const Document& doc)
+: Object(id, element, name)
+{
+ const Scope& sc = GetRequiredScope(element);
+
+ // note: we don't currently use any of these properties so we shouldn't bother if it is missing
+ props = GetPropertyTable(doc,"AnimationStack.FbxAnimStack",element,sc, true);
+
+ // resolve attached animation layers
+ const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationLayer");
+ layers.reserve(conns.size());
+
+ for(const Connection* con : conns) {
+
+ // link should not go to a property
+ if (con->PropertyName().length()) {
+ continue;
+ }
+
+ const Object* const ob = con->SourceObject();
+ if(!ob) {
+ DOMWarning("failed to read source object for AnimationLayer->AnimationStack link, ignoring",&element);
+ continue;
+ }
+
+ const AnimationLayer* const anim = dynamic_cast<const AnimationLayer*>(ob);
+ if(!anim) {
+ DOMWarning("source object for ->AnimationStack link is not an AnimationLayer",&element);
+ continue;
+ }
+ layers.push_back(anim);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+AnimationStack::~AnimationStack()
+{
+ // empty
+}
+
+} //!FBX
+} //!Assimp
+
+#endif // ASSIMP_BUILD_NO_FBX_IMPORTER
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