update assimp

libs/assimp/CMakeLists.txt

@@ -454,7 +454,7 @@ IF(ASSIMP_HUNTER_ENABLED)
 ELSE()
   # If the zlib is already found outside, add an export in case assimpTargets can't find it.
   IF( ZLIB_FOUND )
-    INSTALL( TARGETS zlib
+    INSTALL( TARGETS zlib zlibstatic
         EXPORT "${TARGETS_EXPORT_NAME}")
   ENDIF()
 

libs/assimp/LICENSE

@@ -1,6 +1,6 @@
 Open Asset Import Library (assimp)
 
-Copyright (c) 2006-2020, assimp team
+Copyright (c) 2006-2021, assimp team
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,

libs/assimp/Readme.md

@@ -76,9 +76,6 @@ For more information, visit [our website](http://assimp.org/). Or check out the
 
 If the docs don't solve your problem, ask on [StackOverflow with the assimp-tag](http://stackoverflow.com/questions/tagged/assimp?sort=newest). If you think you found a bug, please open an issue on Github.
 
-For development discussions, there is also a (very low-volume) mailing list, _assimp-discussions_
-  [(subscribe here)]( https://lists.sourceforge.net/lists/listinfo/assimp-discussions)
-
 Open Asset Import Library is a library to load various 3d file formats into a shared, in-memory format. It supports more than __40 file formats__ for import and a growing selection of file formats for export.
 
 And we also have a Gitter-channel:Gitter [![Join the chat at https://gitter.im/assimp/assimp](https://badges.gitter.im/assimp/assimp.svg)](https://gitter.im/assimp/assimp?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)<br>
@@ -103,9 +100,6 @@ Become a financial contributor and help us sustain our community. [[Contribute](
 
 <a href="https://opencollective.com/assimp"><img src="https://opencollective.com/assimp/individuals.svg?width=890"></a>
 
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/assimp)
-
 
 #### Organizations
 

libs/assimp/code/AssetLib/3DS/3DSLoader.cpp

@@ -981,9 +981,9 @@ void Discreet3DSImporter::ParseMeshChunk() {
         mMesh.mMat.a3 = stream->GetF4();
         mMesh.mMat.b3 = stream->GetF4();
         mMesh.mMat.c3 = stream->GetF4();
-        mMesh.mMat.a4 = stream->GetF4();
+        mMesh.mMat.d1 = stream->GetF4();
-        mMesh.mMat.b4 = stream->GetF4();
+        mMesh.mMat.d2 = stream->GetF4();
-        mMesh.mMat.c4 = stream->GetF4();
+        mMesh.mMat.d3 = stream->GetF4();
     } break;
 
     case Discreet3DS::CHUNK_MAPLIST: {

libs/assimp/code/AssetLib/AMF/AMFImporter.cpp

@@ -39,16 +39,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ---------------------------------------------------------------------------
 */
 
-/// \file AMFImporter.cpp
-/// \brief AMF-format files importer for Assimp: main algorithm implementation.
-/// \date 2016
-/// \author smal.root@gmail.com
-
 #ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
 
 // Header files, Assimp.
 #include "AMFImporter.hpp"
-#include "AMFImporter_Macro.hpp"
 
 #include <assimp/DefaultIOSystem.h>
 #include <assimp/fast_atof.h>
@@ -307,14 +301,14 @@ void AMFImporter::ParseNode_Root() {
         throw DeadlyImportError("Root node \"amf\" not found.");
     }
     XmlNode node = *root;
-    mUnit = ai_str_tolower(std::string(node.attribute("unit").as_string()));
+    mUnit = ai_tolower(std::string(node.attribute("unit").as_string()));
     
     mVersion = node.attribute("version").as_string();
 
     // Read attributes for node <amf>.
     // Check attributes
     if (!mUnit.empty()) {
-        if ((mUnit != "inch") && (mUnit != "millimeter") && (mUnit != "meter") && (mUnit != "feet") && (mUnit != "micron")) {
+        if ((mUnit != "inch") && (mUnit != "millimeters") && (mUnit != "millimeter") && (mUnit != "meter") && (mUnit != "feet") && (mUnit != "micron")) {
             Throw_IncorrectAttrValue("unit", mUnit);
         }
     }
@@ -409,20 +403,20 @@ void AMFImporter::ParseNode_Instance(XmlNode &node) {
 
     if (!node.empty()) {
         ParseHelper_Node_Enter(ne);
-        for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
+        for (auto &currentNode : node.children()) {
             const std::string &currentName = currentNode.name();
             if (currentName == "deltax") {
-                als.Delta.x = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.x);
             } else if (currentName == "deltay") {
-                als.Delta.y = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.y);
             } else if (currentName == "deltaz") {
-                als.Delta.z = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.z);
             } else if (currentName == "rx") {
-                als.Delta.x = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.x);
             } else if (currentName == "ry") {
-                als.Delta.y = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.y);
             } else if (currentName == "rz") {
-                als.Delta.z = (ai_real)std::atof(currentNode.value());
+                XmlParser::getValueAsFloat(currentNode, als.Delta.z);
             }
         }
         ParseHelper_Node_Exit();
@@ -458,7 +452,7 @@ void AMFImporter::ParseNode_Object(XmlNode &node) {
     // Check for child nodes
     if (!node.empty()) {
         ParseHelper_Node_Enter(ne);
-        for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
+        for (auto &currentNode : node.children()) {
             const std::string &currentName = currentNode.name();
             if (currentName == "color") {
                 ParseNode_Color(currentNode);

libs/assimp/code/AssetLib/AMF/AMFImporter_Geometry.cpp

@@ -39,16 +39,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ---------------------------------------------------------------------------
 */
 
-/// \file AMFImporter_Geometry.cpp
-/// \brief Parsing data from geometry nodes.
-/// \date 2016
-/// \author smal.root@gmail.com
-
 #ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
 
 #include "AMFImporter.hpp"
-#include "AMFImporter_Macro.hpp"
-
 #include <assimp/ParsingUtils.h>
 
 namespace Assimp {
@@ -103,18 +96,18 @@ void AMFImporter::ParseNode_Vertices(XmlNode &node) {
     // create new mesh object.
     ne = new AMFVertices(mNodeElement_Cur);
     // Check for child nodes
-    pugi::xml_node vertexNode = node.child("vertex");
+    if (node.empty()) {
-    if (!vertexNode.empty()) {
-        ParseHelper_Node_Enter(ne);
-
-        ParseNode_Vertex(vertexNode);
-
-        ParseHelper_Node_Exit();
-
-    } else {
         mNodeElement_Cur->Child.push_back(ne); // Add element to child list of current element
-    } // if(!mReader->isEmptyElement()) else
+        return;
-
+    }
+    ParseHelper_Node_Enter(ne);
+    for (XmlNode &currentNode : node.children()) {
+        const std::string &currentName = currentNode.name();
+        if (currentName == "vertex") {
+            ParseNode_Vertex(currentNode);
+        }
+    }
+    ParseHelper_Node_Exit();
     mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
 }
 
@@ -166,27 +159,25 @@ void AMFImporter::ParseNode_Vertex(XmlNode &node) {
 //   X, Y, or Z coordinate, respectively, of a vertex position in space.
 void AMFImporter::ParseNode_Coordinates(XmlNode &node) {
     AMFNodeElementBase *ne = nullptr;
-
-    // create new color object.
-    ne = new AMFCoordinates(mNodeElement_Cur);
-
-    AMFCoordinates &als = *((AMFCoordinates *)ne); // alias for convenience
     if (!node.empty()) {
+        ne = new AMFCoordinates(mNodeElement_Cur);
         ParseHelper_Node_Enter(ne);
         for (XmlNode &currentNode : node.children()) {
-            const std::string &currentName = currentNode.name();
+            // create new color object.
-            if (currentName == "X") {
+            AMFCoordinates &als = *((AMFCoordinates *)ne); // alias for convenience
+            const std::string &currentName = ai_tolower(currentNode.name());
+            if (currentName == "x") {
                 XmlParser::getValueAsFloat(currentNode, als.Coordinate.x);
-            } else if (currentName == "Y") {
+            } else if (currentName == "y") {
                 XmlParser::getValueAsFloat(currentNode, als.Coordinate.y);
-            } else if (currentName == "Z") {
+            } else if (currentName == "z") {
                 XmlParser::getValueAsFloat(currentNode, als.Coordinate.z);
             }
         }
-
         ParseHelper_Node_Exit();
+
     } else {
-        mNodeElement_Cur->Child.push_back(ne);
+        mNodeElement_Cur->Child.push_back(new AMFCoordinates(mNodeElement_Cur));
     }
 
     mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
@@ -216,7 +207,7 @@ void AMFImporter::ParseNode_Volume(XmlNode &node) {
     bool col_read = false;
     if (!node.empty()) {
         ParseHelper_Node_Enter(ne);
-        for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
+        for (auto &currentNode : node.children()) {
             const std::string currentName = currentNode.name();
             if (currentName == "color") {
                 if (col_read) Throw_MoreThanOnceDefined(currentName, "color", "Only one color can be defined for <volume>.");
@@ -258,7 +249,8 @@ void AMFImporter::ParseNode_Triangle(XmlNode &node) {
     bool col_read = false;
     if (!node.empty()) {
         ParseHelper_Node_Enter(ne);
-        for (XmlNode currentNode = node.first_child(); currentNode; currentNode = currentNode.next_sibling()) {
+        std::string v;
+        for (auto &currentNode : node.children()) {
             const std::string currentName = currentNode.name();
             if (currentName == "color") {
                 if (col_read) Throw_MoreThanOnceDefined(currentName, "color", "Only one color can be defined for <triangle>.");
@@ -269,11 +261,14 @@ void AMFImporter::ParseNode_Triangle(XmlNode &node) {
             } else if (currentName == "map") {
                 ParseNode_TexMap(currentNode, true);
             } else if (currentName == "v1") {
-                als.V[0] = std::atoi(currentNode.value());
+                XmlParser::getValueAsString(currentNode, v);
+                als.V[0] = std::atoi(v.c_str());
             } else if (currentName == "v2") {
-                als.V[1] = std::atoi(currentNode.value());
+                XmlParser::getValueAsString(currentNode, v);
+                als.V[1] = std::atoi(v.c_str());
             } else if (currentName == "v3") {
-                als.V[2] = std::atoi(currentNode.value());
+                XmlParser::getValueAsString(currentNode, v);
+                als.V[2] = std::atoi(v.c_str());
             }
         }
         ParseHelper_Node_Exit();

libs/assimp/code/AssetLib/AMF/AMFImporter_Material.cpp

@@ -65,18 +65,20 @@ namespace Assimp {
 //   Red, Greed, Blue and Alpha (transparency) component of a color in sRGB space, values ranging from 0 to 1. The
 //   values can be specified as constants, or as a formula depending on the coordinates.
 void AMFImporter::ParseNode_Color(XmlNode &node) {
-    std::string profile = node.attribute("profile").as_string();
+    if (node.empty()) {
+        return;
+    }
 
-	// create new color object.
+    const std::string &profile = node.attribute("profile").as_string();
-	AMFNodeElementBase *ne = new AMFColor(mNodeElement_Cur);
-	AMFColor& als = *((AMFColor*)ne);// alias for convenience
-
-	als.Profile = profile;
-	if (!node.empty()) {
-        ParseHelper_Node_Enter(ne);
     bool read_flag[4] = { false, false, false, false };
+    AMFNodeElementBase *ne = new AMFColor(mNodeElement_Cur);
+    AMFColor &als = *((AMFColor *)ne); // alias for convenience
+    ParseHelper_Node_Enter(ne);
     for (pugi::xml_node &child : node.children()) {
-            std::string name = child.name();
+        // create new color object.
+        als.Profile = profile;
+
+        const std::string &name = child.name();
         if ( name == "r") {
 			read_flag[0] = true;
             XmlParser::getValueAsFloat(child, als.Color.r);
@@ -90,23 +92,18 @@ void AMFImporter::ParseNode_Color(XmlNode &node) {
 			read_flag[3] = true;
             XmlParser::getValueAsFloat(child, als.Color.a);
         }
-            ParseHelper_Node_Exit();
-        }
-		// check that all components was defined
-		if (!(read_flag[0] && read_flag[1] && read_flag[2])) {
-			throw DeadlyImportError("Not all color components are defined.");
-		}
-
         // check if <a> is absent. Then manually add "a == 1".
         if (!read_flag[3]) {
             als.Color.a = 1;
         }
-	} else {
-		mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
     }
-
     als.Composed = false;
-	mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
+    mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
+    ParseHelper_Node_Exit();
+    // check that all components was defined
+	if (!(read_flag[0] && read_flag[1] && read_flag[2])) {
+		throw DeadlyImportError("Not all color components are defined.");
+	}
 }
 
 // <material
@@ -158,11 +155,11 @@ void AMFImporter::ParseNode_Material(XmlNode &node) {
 // Multi elements - Yes.
 // Parent element - <amf>.
 void AMFImporter::ParseNode_Texture(XmlNode &node) {
-    std::string id = node.attribute("id").as_string();
+    const std::string id = node.attribute("id").as_string();
-	uint32_t width = node.attribute("width").as_uint();
+	const uint32_t width = node.attribute("width").as_uint();
-	uint32_t height = node.attribute("height").as_uint();
+    const uint32_t height = node.attribute("height").as_uint();
     uint32_t depth = node.attribute("depth").as_uint();
-	std::string type = node.attribute("type").as_string();
+    const std::string type = node.attribute("type").as_string();
 	bool tiled = node.attribute("tiled").as_bool();
 
     if (node.empty()) {
@@ -174,7 +171,8 @@ void AMFImporter::ParseNode_Texture(XmlNode &node) {
 
 	AMFTexture& als = *((AMFTexture*)ne);// alias for convenience
 
-    std::string enc64_data = node.value();
+    std::string enc64_data;
+    XmlParser::getValueAsString(node, enc64_data);
     // Check for child nodes
 
 	// check that all components was defined
@@ -182,14 +180,11 @@ void AMFImporter::ParseNode_Texture(XmlNode &node) {
 		throw DeadlyImportError("ID for texture must be defined.");
     }
     if (width < 1) {
-		throw DeadlyImportError("INvalid width for texture.");
+		throw DeadlyImportError("Invalid width for texture.");
     }
     if (height < 1) {
 		throw DeadlyImportError("Invalid height for texture.");
 	}
-    if (depth < 1) {
-		throw DeadlyImportError("Invalid depth for texture.");
-    }
     if (type != "grayscale") {
 		throw DeadlyImportError("Invalid type for texture.");
     }
@@ -203,7 +198,9 @@ void AMFImporter::ParseNode_Texture(XmlNode &node) {
 	als.Depth = depth;
 	als.Tiled = tiled;
 	ParseHelper_Decode_Base64(enc64_data, als.Data);
-
+    if (depth == 0) {
+        depth = (uint32_t)(als.Data.size() / (width * height));
+    }
     // check data size
     if ((width * height * depth) != als.Data.size()) {
         throw DeadlyImportError("Texture has incorrect data size.");
@@ -233,20 +230,18 @@ void AMFImporter::ParseNode_TexMap(XmlNode &node, const bool pUseOldName) {
     AMFTexMap &als = *((AMFTexMap *)ne); //
     std::string rtexid, gtexid, btexid, atexid;
     if (!node.empty()) {
-        ParseHelper_Node_Enter(ne);
+        for (pugi::xml_attribute &attr : node.attributes()) {
-        for (XmlNode &currentNode : node.children()) {
+            const std::string &currentAttr = attr.name();
-            const std::string &currentName = currentNode.name();
+            if (currentAttr == "rtexid") {
-            if (currentName == "rtexid") {
+                rtexid = attr.as_string();
-                XmlParser::getValueAsString(node, rtexid);
+            } else if (currentAttr == "gtexid") {
-            } else if (currentName == "gtexid") {
+                gtexid = attr.as_string();
-                XmlParser::getValueAsString(node, gtexid);
+            } else if (currentAttr == "btexid") {
-            } else if (currentName == "btexid") {
+                btexid = attr.as_string();
-                XmlParser::getValueAsString(node, btexid);
+            } else if (currentAttr == "atexid") {
-            } else if (currentName == "atexid") {
+                atexid = attr.as_string();
-                XmlParser::getValueAsString(node, atexid);
             }
         }
-        ParseHelper_Node_Exit();
     }
 
 	// create new texture coordinates object, alias for convenience
@@ -256,7 +251,6 @@ void AMFImporter::ParseNode_TexMap(XmlNode &node, const bool pUseOldName) {
 	}
 
 	// Check for children nodes
-	//XML_CheckNode_MustHaveChildren();
 	if (node.children().begin() == node.children().end()) {
 		throw DeadlyImportError("Invalid children definition.");
 	}
@@ -264,28 +258,31 @@ void AMFImporter::ParseNode_TexMap(XmlNode &node, const bool pUseOldName) {
 	bool read_flag[6] = { false, false, false, false, false, false };
 
 	if (!pUseOldName) {
-		for (pugi::xml_attribute &attr : node.attributes()) {
+        ParseHelper_Node_Enter(ne);
-            const std::string name = attr.name();
+        for ( XmlNode &currentNode : node.children()) {
+            const std::string &name = currentNode.name();
             if (name == "utex1") {
 				read_flag[0] = true;
-				als.TextureCoordinate[0].x = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[0].x);
             } else if (name == "utex2") {
 				read_flag[1] = true;
-				als.TextureCoordinate[1].x = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[1].x);
             } else if (name == "utex3") {
 				read_flag[2] = true;
-				als.TextureCoordinate[2].x = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[2].x);
             } else if (name == "vtex1") {
 				read_flag[3] = true;
-				als.TextureCoordinate[0].y = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[0].y);
             } else if (name == "vtex2") {
 				read_flag[4] = true;
-				als.TextureCoordinate[1].y = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[1].y);
             } else if (name == "vtex3") {
 				read_flag[5] = true;
-				als.TextureCoordinate[0].y = attr.as_float();
+                XmlParser::getValueAsFloat(node, als.TextureCoordinate[2].y);
 			}
 		}
+        ParseHelper_Node_Exit();
+
 	} else {
 		for (pugi::xml_attribute &attr : node.attributes()) {
             const std::string name = attr.name();

libs/assimp/code/AssetLib/AMF/AMFImporter_Postprocess.cpp

@@ -62,12 +62,14 @@ aiColor4D AMFImporter::SPP_Material::GetColor(const float /*pX*/, const float /*
     // Check if stored data are supported.
     if (!Composition.empty()) {
         throw DeadlyImportError("IME. GetColor for composition");
-    } else if (Color->Composed) {
-        throw DeadlyImportError("IME. GetColor, composed color");
-    } else {
-        tcol = Color->Color;
     }
 
+    if (Color->Composed) {
+        throw DeadlyImportError("IME. GetColor, composed color");
+    }
+
+    tcol = Color->Color;
+    
     // Check if default color must be used
     if ((tcol.r == 0) && (tcol.g == 0) && (tcol.b == 0) && (tcol.a == 0)) {
         tcol.r = 0.5f;
@@ -79,13 +81,13 @@ aiColor4D AMFImporter::SPP_Material::GetColor(const float /*pX*/, const float /*
     return tcol;
 }
 
-void AMFImporter::PostprocessHelper_CreateMeshDataArray(const AMFMesh &pNodeElement, std::vector<aiVector3D> &pVertexCoordinateArray,
+void AMFImporter::PostprocessHelper_CreateMeshDataArray(const AMFMesh &nodeElement, std::vector<aiVector3D> &vertexCoordinateArray,
         std::vector<AMFColor *> &pVertexColorArray) const {
     AMFVertices  *vn = nullptr;
     size_t col_idx;
 
     // All data stored in "vertices", search for it.
-    for (AMFNodeElementBase *ne_child : pNodeElement.Child) {
+    for (AMFNodeElementBase *ne_child : nodeElement.Child) {
         if (ne_child->Type == AMFNodeElementBase::ENET_Vertices) {
             vn = (AMFVertices*)ne_child;
         }
@@ -97,7 +99,7 @@ void AMFImporter::PostprocessHelper_CreateMeshDataArray(const AMFMesh &pNodeElem
     }
 
     // all coordinates stored as child and we need to reserve space for future push_back's.
-    pVertexCoordinateArray.reserve(vn->Child.size()); 
+    vertexCoordinateArray.reserve(vn->Child.size()); 
 
     // colors count equal vertices count.
     pVertexColorArray.resize(vn->Child.size()); 
@@ -112,7 +114,7 @@ void AMFImporter::PostprocessHelper_CreateMeshDataArray(const AMFMesh &pNodeElem
 
             for (AMFNodeElementBase *vtx : vn_child->Child) {
                 if (vtx->Type == AMFNodeElementBase::ENET_Coordinates) {
-                    pVertexCoordinateArray.push_back(((AMFCoordinates *)vtx)->Coordinate);
+                    vertexCoordinateArray.push_back(((AMFCoordinates *)vtx)->Coordinate);
                     continue;
                 }
 

libs/assimp/code/AssetLib/FBX/FBXExporter.cpp

@@ -812,6 +812,18 @@ void FBXExporter::WriteDefinitions ()
     // Geometry / FbxMesh
     // <~~ aiMesh
     count = mScene->mNumMeshes;
+
+    // Blendshapes are considered Geometry
+    int32_t bsDeformerCount=0;
+    for (size_t mi = 0; mi < mScene->mNumMeshes; ++mi) {
+        aiMesh* m = mScene->mMeshes[mi];
+        if (m->mNumAnimMeshes > 0) {
+          count+=m->mNumAnimMeshes;
+          bsDeformerCount+=m->mNumAnimMeshes; // One deformer per blendshape
+          bsDeformerCount++;                  // Plus one master blendshape deformer
+        }
+    }
+
     if (count) {
         n = FBX::Node("ObjectType", "Geometry");
         n.AddChild("Count", count);
@@ -978,7 +990,7 @@ void FBXExporter::WriteDefinitions ()
     }
 
     // Deformer
-    count = int32_t(count_deformers(mScene));
+    count = int32_t(count_deformers(mScene))+bsDeformerCount;
     if (count) {
         n = FBX::Node("ObjectType", "Deformer");
         n.AddChild("Count", count);
@@ -1363,6 +1375,7 @@ void FBXExporter::WriteObjects ()
         n.End(outstream, binary, indent, true);
     }
 
+
     // aiMaterial
     material_uids.clear();
     for (size_t i = 0; i < mScene->mNumMaterials; ++i) {
@@ -1697,6 +1710,100 @@ void FBXExporter::WriteObjects ()
         }
     }
 
+    // Blendshapes, if any
+    for (size_t mi = 0; mi < mScene->mNumMeshes; ++mi) {
+      const aiMesh* m = mScene->mMeshes[mi];
+      if (m->mNumAnimMeshes == 0) {
+        continue;
+      }
+      // make a deformer for this mesh
+      int64_t deformer_uid = generate_uid();
+      FBX::Node dnode("Deformer");
+      dnode.AddProperties(deformer_uid, m->mName.data + FBX::SEPARATOR + "Blendshapes", "BlendShape");
+      dnode.AddChild("Version", int32_t(101));
+      dnode.Dump(outstream, binary, indent);
+      // connect it
+      connections.emplace_back("C", "OO", deformer_uid, mesh_uids[mi]);
+      std::vector<int32_t> vertex_indices = vVertexIndice[mi];
+
+      for (unsigned int am = 0; am < m->mNumAnimMeshes; ++am) {
+        aiAnimMesh *pAnimMesh = m->mAnimMeshes[am];
+        std::string blendshape_name = pAnimMesh->mName.data;
+
+        // start the node record
+        FBX::Node bsnode("Geometry");
+        int64_t blendshape_uid = generate_uid();
+        mesh_uids.push_back(blendshape_uid);
+        bsnode.AddProperty(blendshape_uid);
+        bsnode.AddProperty(blendshape_name + FBX::SEPARATOR + "Blendshape");
+        bsnode.AddProperty("Shape");
+        bsnode.AddChild("Version", int32_t(100));        
+        bsnode.Begin(outstream, binary, indent);
+        bsnode.DumpProperties(outstream, binary, indent);
+        bsnode.EndProperties(outstream, binary, indent);
+        bsnode.BeginChildren(outstream, binary, indent);
+        indent++;
+        if (pAnimMesh->HasPositions()) {
+          std::vector<int32_t>shape_indices;
+          std::vector<double>pPositionDiff;
+          std::vector<double>pNormalDiff;
+
+          for (unsigned int vt = 0; vt < vertex_indices.size(); ++vt) {
+              aiVector3D pDiff = (pAnimMesh->mVertices[vertex_indices[vt]] - m->mVertices[vertex_indices[vt]]);
+              if(pDiff.Length()>1e-8){
+                shape_indices.push_back(vertex_indices[vt]);
+                pPositionDiff.push_back(pDiff[0]);
+                pPositionDiff.push_back(pDiff[1]);
+                pPositionDiff.push_back(pDiff[2]);
+
+                if (pAnimMesh->HasNormals()) {
+                    aiVector3D nDiff = (pAnimMesh->mNormals[vertex_indices[vt]] - m->mNormals[vertex_indices[vt]]);
+                    pNormalDiff.push_back(nDiff[0]);
+                    pNormalDiff.push_back(nDiff[1]);
+                    pNormalDiff.push_back(nDiff[2]);
+                }
+              }
+          }
+
+          FBX::Node::WritePropertyNode(
+              "Indexes", shape_indices, outstream, binary, indent
+          );
+
+          FBX::Node::WritePropertyNode(
+              "Vertices", pPositionDiff, outstream, binary, indent
+          );
+
+          if (pNormalDiff.size()>0) {
+            FBX::Node::WritePropertyNode(
+                "Normals", pNormalDiff, outstream, binary, indent
+            );
+          }
+        }
+        indent--;
+        bsnode.End(outstream, binary, indent, true);
+
+        // Add blendshape Channel Deformer
+        FBX::Node sdnode("Deformer");
+        const int64_t blendchannel_uid = generate_uid();
+        sdnode.AddProperties(
+            blendchannel_uid, blendshape_name + FBX::SEPARATOR + "SubDeformer", "BlendShapeChannel"
+        );
+        sdnode.AddChild("Version", int32_t(100));
+        sdnode.AddChild("DeformPercent", int32_t(100));
+        FBX::Node p("Properties70");
+        p.AddP70numberA("DeformPercent", 100.);
+        sdnode.AddChild(p);
+        // TODO: Normally just one weight per channel, adding stub for later development
+        std::vector<float>fFullWeights;
+        fFullWeights.push_back(0.);
+        sdnode.AddChild("FullWeights", fFullWeights);
+        sdnode.Dump(outstream, binary, indent);
+
+        connections.emplace_back("C", "OO", blendchannel_uid, deformer_uid);
+        connections.emplace_back("C", "OO", blendshape_uid, blendchannel_uid);
+      }
+    }
+
     // bones.
     //
     // output structure:

libs/assimp/code/AssetLib/HMP/HMPLoader.cpp

@@ -158,6 +158,9 @@ void HMPImporter::InternReadFile(const std::string &pFile,
         szBuffer[3] = ((char *)&iMagic)[3];
         szBuffer[4] = '\0';
     
+        delete[] mBuffer;
+        mBuffer = nullptr;
+        
         // We're definitely unable to load this file
         throw DeadlyImportError("Unknown HMP subformat ", pFile,
                                 ". Magic word (", szBuffer, ") is not known");

libs/assimp/code/AssetLib/Ogre/OgreMaterial.cpp

@@ -419,7 +419,7 @@ bool OgreImporter::ReadTextureUnit(const std::string &textureUnitName, stringstr
                 size_t posUnderscore = textureRef.find_last_of("_");
 
                 if (posSuffix != string::npos && posUnderscore != string::npos && posSuffix > posUnderscore) {
-                    string identifier = ai_str_tolower(textureRef.substr(posUnderscore, posSuffix - posUnderscore));
+                    string identifier = ai_tolower(textureRef.substr(posUnderscore, posSuffix - posUnderscore));
                     ASSIMP_LOG_VERBOSE_DEBUG_F("Detecting texture type from filename postfix '", identifier, "'");
 
                     if (identifier == "_n" || identifier == "_nrm" || identifier == "_nrml" || identifier == "_normal" || identifier == "_normals" || identifier == "_normalmap") {
@@ -440,7 +440,7 @@ bool OgreImporter::ReadTextureUnit(const std::string &textureUnitName, stringstr
             // Detect from texture unit name. This cannot be too broad as
             // authors might give names like "LightSaber" or "NormalNinja".
             else {
-                string unitNameLower = ai_str_tolower(textureUnitName);
+                string unitNameLower = ai_tolower(textureUnitName);
                 if (unitNameLower.find("normalmap") != string::npos) {
                     textureType = aiTextureType_NORMALS;
                 } else if (unitNameLower.find("specularmap") != string::npos) {

libs/assimp/code/AssetLib/Ogre/OgreParsingUtils.h

@@ -64,7 +64,7 @@ static inline bool EndsWith(const std::string &s, const std::string &suffix, boo
     }
 
     if (!caseSensitive) {
-        return EndsWith(ai_str_tolower(s), ai_str_tolower(suffix), true);
+        return EndsWith(ai_tolower(s), ai_tolower(suffix), true);
     }
 
     size_t len = suffix.length();

libs/assimp/code/AssetLib/Ogre/OgreXmlSerializer.cpp

@@ -120,7 +120,7 @@ std::string OgreXmlSerializer::ReadAttribute<std::string>(XmlNode &xmlNode, cons
 
 template <>
 bool OgreXmlSerializer::ReadAttribute<bool>(XmlNode &xmlNode, const char *name) const {
-    std::string value = ai_str_tolower(ReadAttribute<std::string>(xmlNode, name));
+    std::string value = ai_tolower(ReadAttribute<std::string>(xmlNode, name));
     if (ASSIMP_stricmp(value, "true") == 0) {
         return true;
     } else if (ASSIMP_stricmp(value, "false") == 0) {
@@ -545,7 +545,7 @@ void OgreXmlSerializer::ReadSkeleton(XmlNode &node, Skeleton *skeleton) {
 
     // Optional blend mode from root node
     if (XmlParser::hasAttribute(node, "blendmode")) {
-        skeleton->blendMode = (ai_str_tolower(ReadAttribute<std::string>(node, "blendmode")) == "cumulative" ? Skeleton::ANIMBLEND_CUMULATIVE : Skeleton::ANIMBLEND_AVERAGE);
+        skeleton->blendMode = (ai_tolower(ReadAttribute<std::string>(node, "blendmode")) == "cumulative" ? Skeleton::ANIMBLEND_CUMULATIVE : Skeleton::ANIMBLEND_AVERAGE);
     }
 
     for (XmlNode &currentNode : node.children()) {

libs/assimp/code/AssetLib/STEPParser/STEPFileReader.cpp

@@ -278,7 +278,7 @@ void STEP::ReadFile(DB& db,const EXPRESS::ConversionSchema& scheme,
             --ne;
         } while (IsSpace(s.at(ne)));
         std::string type = s.substr(ns, ne - ns + 1);
-        type = ai_str_tolower(type);
+        type = ai_tolower(type);
         const char* sz = scheme.GetStaticStringForToken(type);
         if(sz) {
             const std::string::size_type szLen = n2-n1+1;

libs/assimp/code/AssetLib/glTF2/glTF2Importer.cpp

@@ -527,8 +527,8 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
                 std::fill(aim->mAnimMeshes, aim->mAnimMeshes + aim->mNumAnimMeshes, nullptr);
                 for (size_t i = 0; i < targets.size(); i++) {
                     bool needPositions = targets[i].position.size() > 0;
-                    bool needNormals = targets[i].normal.size() > 0;
+                    bool needNormals = (targets[i].normal.size() > 0) && aim->HasNormals();
-                    bool needTangents = targets[i].tangent.size() > 0;
+                    bool needTangents = (targets[i].tangent.size() > 0) && aim->HasTangentsAndBitangents();
                     // GLTF morph does not support colors and texCoords
                     aim->mAnimMeshes[i] = aiCreateAnimMesh(aim,
                             needPositions, needNormals, needTangents, false, false);
@@ -536,6 +536,9 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
                     Mesh::Primitive::Target &target = targets[i];
 
                     if (needPositions) {
+                        if (target.position[0]->count != aim->mNumVertices) {
+                            ASSIMP_LOG_WARN_F("Positions of target ", i, " in mesh \"", mesh.name, "\" does not match the vertex count");
+                        } else {
                             aiVector3D *positionDiff = nullptr;
                             target.position[0]->ExtractData(positionDiff);
                             for (unsigned int vertexId = 0; vertexId < aim->mNumVertices; vertexId++) {
@@ -543,7 +546,11 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
                             }
                             delete[] positionDiff;
                         }
+                    }
                     if (needNormals) {
+                        if (target.normal[0]->count != aim->mNumVertices) {
+                            ASSIMP_LOG_WARN_F("Normals of target ", i, " in mesh \"", mesh.name, "\" does not match the vertex count");
+                        } else {
                             aiVector3D *normalDiff = nullptr;
                             target.normal[0]->ExtractData(normalDiff);
                             for (unsigned int vertexId = 0; vertexId < aim->mNumVertices; vertexId++) {
@@ -551,7 +558,11 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
                             }
                             delete[] normalDiff;
                         }
+                    }
                     if (needTangents) {
+                        if (target.tangent[0]->count != aim->mNumVertices) {
+                            ASSIMP_LOG_WARN_F("Tangents of target ", i, " in mesh \"", mesh.name, "\" does not match the vertex count");
+                        } else {
                             Tangent *tangent = nullptr;
                             attr.tangent[0]->ExtractData(tangent);
 
@@ -566,6 +577,7 @@ void glTF2Importer::ImportMeshes(glTF2::Asset &r) {
                             delete[] tangent;
                             delete[] tangentDiff;
                         }
+                    }
                     if (mesh.weights.size() > i) {
                         aiAnimMesh.mWeight = mesh.weights[i];
                     }

libs/assimp/code/CMakeLists.txt

@@ -298,7 +298,6 @@ SET(ASSIMP_EXPORTERS_DISABLED "") # disabled exporters list (used to print)
 
 ADD_ASSIMP_IMPORTER( AMF
   AssetLib/AMF/AMFImporter.hpp
-  AssetLib/AMF/AMFImporter_Macro.hpp
   AssetLib/AMF/AMFImporter_Node.hpp
   AssetLib/AMF/AMFImporter.cpp
   AssetLib/AMF/AMFImporter_Geometry.cpp

libs/assimp/code/Common/BaseImporter.cpp

@@ -276,7 +276,7 @@ std::string BaseImporter::GetExtension(const std::string &file) {
 
     // thanks to Andy Maloney for the hint
     std::string ret = file.substr(pos + 1);
-    ret = ai_str_tolower(ret);
+    ret = ai_tolower(ret);
 
     return ret;
 }

libs/assimp/code/Common/Importer.cpp

@@ -982,7 +982,7 @@ size_t Importer::GetImporterIndex (const char* szExtension) const {
     if (ext.empty()) {
         return static_cast<size_t>(-1);
     }
-    ext = ai_str_tolower(ext);
+    ext = ai_tolower(ext);
     std::set<std::string> str;
     for (std::vector<BaseImporter*>::const_iterator i =  pimpl->mImporter.begin();i != pimpl->mImporter.end();++i)  {
         str.clear();

libs/assimp/code/PostProcessing/EmbedTexturesProcess.cpp

@@ -137,7 +137,7 @@ bool EmbedTexturesProcess::addTexture(aiScene* pScene, std::string path) const {
     pTexture->pcData = imageContent;
 
     auto extension = path.substr(path.find_last_of('.') + 1u);
-    extension = ai_str_tolower(extension);
+    extension = ai_tolower(extension);
     if (extension == "jpeg") {
         extension = "jpg";
     }

libs/assimp/include/assimp/MathFunctions.h

@@ -97,7 +97,7 @@ inline T getEpsilon() {
 /// @brief  Will return the constant PI for the requested type.
 /// @return Pi
 template<class T>
-inline T PI() {
+inline T aiPi() {
     return static_cast<T>(3.14159265358979323846);
 }
 

libs/assimp/include/assimp/StringUtils.h

@@ -225,7 +225,7 @@ AI_FORCE_INLINE char_t ai_tolower(char_t in) {
 /// @param  in  The incoming string.
 /// @return The string as lowercase.
 // ---------------------------------------------------------------------------------
-AI_FORCE_INLINE std::string ai_str_tolower(const std::string &in) {
+AI_FORCE_INLINE std::string ai_tolower(const std::string &in) {
     std::string out(in);
     ai_trim_left(out);
     ai_trim_right(out);

libs/assimp/port/iOS/build.sh

@@ -22,7 +22,7 @@ BUILD_TYPE=Release
 ################################################
 # 		 Minimum iOS deployment target version
 ################################################
-MIN_IOS_VERSION="6.0"
+MIN_IOS_VERSION="10.0"
 
 IOS_SDK_TARGET=$MIN_IOS_VERSION
 XCODE_ROOT_DIR=$(xcode-select  --print-path)
@@ -60,8 +60,8 @@ build_arch()
 
     unset DEVROOT SDKROOT CFLAGS LDFLAGS CPPFLAGS CXXFLAGS CMAKE_CLI_INPUT
            
-	#export CC="$(xcrun -sdk iphoneos -find clang)"
+	export CC="$(xcrun -sdk iphoneos -find clang)"
-    #export CPP="$CC -E"
+    export CPP="$CC -E"
     export DEVROOT=$XCODE_ROOT_DIR/Platforms/$IOS_SDK_DEVICE.platform/Developer
     export SDKROOT=$DEVROOT/SDKs/$IOS_SDK_DEVICE$IOS_SDK_VERSION.sdk
     export CFLAGS="-arch $1 -pipe -no-cpp-precomp -stdlib=$CPP_STD_LIB -isysroot $SDKROOT -I$SDKROOT/usr/include/ -miphoneos-version-min=$IOS_SDK_TARGET"

libs/assimp/tools/assimp_view/LogWindow.cpp

@@ -105,7 +105,7 @@ void CLogWindow::Init() {
 
     // setup the log text
     this->szText = AI_VIEW_RTF_LOG_HEADER;
-    ;
+
     this->szPlainText = "";
 }