add assimp submodule

1 files changed, 306 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/NDO/NDOLoader.cpp b/src/mesh/assimp-master/code/AssetLib/NDO/NDOLoader.cpp
new file mode 100644
index 0000000..37c5436
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/NDO/NDOLoader.cpp
@@ -0,0 +1,306 @@
+/*
+---------------------------------------------------------------------------
+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.
+---------------------------------------------------------------------------
+*/
+
+/** @file  NDOLoader.cpp
+ *  Implementation of the NDO importer class.
+ */
+
+
+#ifndef ASSIMP_BUILD_NO_NDO_IMPORTER
+#include "NDOLoader.h"
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/IOSystem.hpp>
+#include <assimp/scene.h>
+#include <assimp/importerdesc.h>
+#include <assimp/StreamReader.h>
+#include <map>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "Nendo Mesh Importer",
+    "",
+    "",
+    "http://www.izware.com/nendo/index.htm",
+    aiImporterFlags_SupportBinaryFlavour,
+    0,
+    0,
+    0,
+    0,
+    "ndo"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+NDOImporter::NDOImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+NDOImporter::~NDOImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool NDOImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool /*checkSig*/) const
+{
+    static const char* tokens[] = {"nendo"};
+    return SearchFileHeaderForToken(pIOHandler,pFile,tokens,AI_COUNT_OF(tokens),5);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Build a string of all file extensions supported
+const aiImporterDesc* NDOImporter::GetInfo () const
+{
+    return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Setup configuration properties for the loader
+void NDOImporter::SetupProperties(const Importer* /*pImp*/)
+{
+    // nothing to be done for the moment
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void NDOImporter::InternReadFile( const std::string& pFile,
+    aiScene* pScene, IOSystem* pIOHandler)
+{
+
+    auto file = pIOHandler->Open( pFile, "rb");
+    if (!file) {
+        throw DeadlyImportError("Nendo: Could not open ", pFile);
+    }
+
+    StreamReaderBE reader(file);
+
+    // first 9 bytes are nendo file format ("nendo 1.n")
+    const char* head = (const char*)reader.GetPtr();
+    reader.IncPtr(9);
+
+    if (strncmp("nendo ",head,6)) {
+        throw DeadlyImportError("Not a Nendo file; magic signature missing");
+    }
+    // check if this is a supported version. if not, continue, too -- users,
+    // please don't complain if it doesn't work then ...
+    unsigned int file_format = 12;
+    if (!strncmp("1.0",head+6,3)) {
+        file_format = 10;
+        ASSIMP_LOG_INFO("NDO file format is 1.0");
+    }
+    else if (!strncmp("1.1",head+6,3)) {
+        file_format = 11;
+        ASSIMP_LOG_INFO("NDO file format is 1.1");
+    }
+    else if (!strncmp("1.2",head+6,3)) {
+        file_format = 12;
+        ASSIMP_LOG_INFO("NDO file format is 1.2");
+    }
+    else {
+        ASSIMP_LOG_WARN( "Unrecognized nendo file format version, continuing happily ... :", (head+6));
+    }
+
+    reader.IncPtr(2); /* skip flags */
+    if (file_format >= 12) {
+        reader.IncPtr(2);
+    }
+    unsigned int temp = reader.GetU1();
+
+    std::vector<Object> objects(temp); /* buffer to store all the loaded objects in */
+
+    // read all objects
+    for (unsigned int o = 0; o < objects.size(); ++o) {
+
+//      if (file_format < 12) {
+            if (!reader.GetI1()) {
+                continue; /* skip over empty object */
+            }
+        //  reader.GetI2();
+//      }
+        Object& obj = objects[o];
+
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        head = (const char*)reader.GetPtr();
+        reader.IncPtr(temp + 76); /* skip unknown stuff */
+
+        obj.name = std::string(head, temp);
+
+        // read edge table
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        obj.edges.reserve(temp);
+        for (unsigned int e = 0; e < temp; ++e) {
+
+            obj.edges.push_back(Edge());
+            Edge& edge = obj.edges.back();
+
+            for (unsigned int i = 0; i< 8; ++i) {
+                edge.edge[i] = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+            }
+            edge.hard =  file_format >= 11 ? reader.GetU1() : 0;
+            for (unsigned int i = 0; i< 8; ++i) {
+                edge.color[i] = reader.GetU1();
+            }
+        }
+
+        // read face table
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        obj.faces.reserve(temp);
+        for (unsigned int e = 0; e < temp; ++e) {
+
+            obj.faces.push_back(Face());
+            Face& face = obj.faces.back();
+
+            face.elem = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        }
+
+        // read vertex table
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        obj.vertices.reserve(temp);
+        for (unsigned int e = 0; e < temp; ++e) {
+
+            obj.vertices.push_back(Vertex());
+            Vertex& v = obj.vertices.back();
+
+            v.num = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+            v.val.x = reader.GetF4();
+            v.val.y = reader.GetF4();
+            v.val.z = reader.GetF4();
+        }
+
+        // read UVs
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        for (unsigned int e = 0; e < temp; ++e) {
+             file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        }
+
+        temp = file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        for (unsigned int e = 0; e < temp; ++e) {
+             file_format >= 12 ? reader.GetU4() : reader.GetU2();
+        }
+
+        if (reader.GetU1()) {
+            const unsigned int x = reader.GetU2(), y = reader.GetU2();
+            temp = 0;
+            while (temp < x*y)  {
+                unsigned int repeat = reader.GetU1();
+                reader.GetU1();
+                reader.GetU1();
+                reader.GetU1();
+                temp += repeat;
+            }
+        }
+    }
+
+    // construct a dummy node graph and add all named objects as child nodes
+    aiNode* root = pScene->mRootNode = new aiNode("$NDODummyRoot");
+    aiNode** cc = root->mChildren = new aiNode* [ root->mNumChildren = static_cast<unsigned int>( objects.size()) ] ();
+    pScene->mMeshes = new aiMesh* [ root->mNumChildren] ();
+
+    std::vector<aiVector3D> vertices;
+    std::vector<unsigned int> indices;
+
+    for(const Object& obj : objects) {
+        aiNode* nd = *cc++ = new aiNode(obj.name);
+        nd->mParent = root;
+
+        // translated from a python dict() - a vector might be sufficient as well
+        typedef std::map<unsigned int, unsigned int>  FaceTable;
+        FaceTable face_table;
+
+        unsigned int n = 0;
+        for(const Edge& edge : obj.edges) {
+
+            face_table[edge.edge[2]] = n;
+            face_table[edge.edge[3]] = n;
+
+            ++n;
+        }
+
+        aiMesh* mesh = new aiMesh();
+        mesh->mNumFaces=static_cast<unsigned int>(face_table.size());
+        aiFace* faces = mesh->mFaces = new aiFace[mesh->mNumFaces];
+
+        vertices.clear();
+        vertices.reserve(4 * face_table.size()); // arbitrarily chosen
+        for(FaceTable::value_type& v : face_table) {
+            indices.clear();
+
+            aiFace& f = *faces++;
+
+            const unsigned int key = v.first;
+            unsigned int cur_edge = v.second;
+            while (1) {
+                unsigned int next_edge, next_vert;
+                if (key == obj.edges[cur_edge].edge[3]) {
+                    next_edge = obj.edges[cur_edge].edge[5];
+                    next_vert = obj.edges[cur_edge].edge[1];
+                }
+                else {
+                    next_edge = obj.edges[cur_edge].edge[4];
+                    next_vert = obj.edges[cur_edge].edge[0];
+                }
+                indices.push_back( static_cast<unsigned int>(vertices.size()) );
+                vertices.push_back(obj.vertices[ next_vert ].val);
+
+                cur_edge = next_edge;
+                if (cur_edge == v.second) {
+                    break;
+                }
+            }
+
+            f.mIndices = new unsigned int[f.mNumIndices = static_cast<unsigned int>(indices.size())];
+            std::copy(indices.begin(),indices.end(),f.mIndices);
+        }
+
+        mesh->mVertices = new aiVector3D[mesh->mNumVertices = static_cast<unsigned int>(vertices.size())];
+        std::copy(vertices.begin(),vertices.end(),mesh->mVertices);
+
+        if (mesh->mNumVertices) {
+            pScene->mMeshes[pScene->mNumMeshes] = mesh;
+
+            (nd->mMeshes = new unsigned int[nd->mNumMeshes=1])[0]=pScene->mNumMeshes++;
+        }else
+            delete mesh;
+    }
+}
+
+#endif