add assimp submodule

1 files changed, 302 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/Raw/RawLoader.cpp b/src/mesh/assimp-master/code/AssetLib/Raw/RawLoader.cpp
new file mode 100644
index 0000000..bfd2e6d
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Raw/RawLoader.cpp
@@ -0,0 +1,302 @@
+/*
+---------------------------------------------------------------------------
+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  RawLoader.cpp
+ *  @brief Implementation of the RAW importer class
+ */
+
+#ifndef ASSIMP_BUILD_NO_RAW_IMPORTER
+
+// internal headers
+#include "RawLoader.h"
+#include <assimp/ParsingUtils.h>
+#include <assimp/fast_atof.h>
+#include <assimp/importerdesc.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/IOSystem.hpp>
+#include <memory>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "Raw Importer",
+    "",
+    "",
+    "",
+    aiImporterFlags_SupportTextFlavour,
+    0,
+    0,
+    0,
+    0,
+    "raw"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+RAWImporter::RAWImporter() {
+    // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+RAWImporter::~RAWImporter() {
+    // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool RAWImporter::CanRead(const std::string &filename, IOSystem * /*pIOHandler*/, bool /*checkSig*/) const {
+    return SimpleExtensionCheck(filename, "raw");
+}
+
+// ------------------------------------------------------------------------------------------------
+const aiImporterDesc *RAWImporter::GetInfo() const {
+    return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void RAWImporter::InternReadFile(const std::string &pFile,
+        aiScene *pScene, IOSystem *pIOHandler) {
+    std::unique_ptr<IOStream> file(pIOHandler->Open(pFile, "rb"));
+
+    // Check whether we can read from the file
+    if (file.get() == nullptr) {
+        throw DeadlyImportError("Failed to open RAW file ", pFile, ".");
+    }
+
+    // allocate storage and copy the contents of the file to a memory buffer
+    // (terminate it with zero)
+    std::vector<char> mBuffer2;
+    TextFileToBuffer(file.get(), mBuffer2);
+    const char *buffer = &mBuffer2[0];
+
+    // list of groups loaded from the file
+    std::vector<GroupInformation> outGroups(1, GroupInformation("<default>"));
+    std::vector<GroupInformation>::iterator curGroup = outGroups.begin();
+
+    // now read all lines
+    char line[4096];
+    while (GetNextLine(buffer, line)) {
+        // if the line starts with a non-numeric identifier, it marks
+        // the beginning of a new group
+        const char *sz = line;
+        SkipSpaces(&sz);
+        if (IsLineEnd(*sz)) continue;
+        if (!IsNumeric(*sz)) {
+            const char *sz2 = sz;
+            while (!IsSpaceOrNewLine(*sz2))
+                ++sz2;
+            const unsigned int length = (unsigned int)(sz2 - sz);
+
+            // find an existing group with this name
+            for (std::vector<GroupInformation>::iterator it = outGroups.begin(), end = outGroups.end();
+                    it != end; ++it) {
+                if (length == (*it).name.length() && !::strcmp(sz, (*it).name.c_str())) {
+                    curGroup = it;
+                    sz2 = nullptr;
+                    break;
+                }
+            }
+            if (sz2) {
+                outGroups.push_back(GroupInformation(std::string(sz, length)));
+                curGroup = outGroups.end() - 1;
+            }
+        } else {
+            // there can be maximally 12 floats plus an extra texture file name
+            float data[12];
+            unsigned int num;
+            for (num = 0; num < 12; ++num) {
+                if (!SkipSpaces(&sz) || !IsNumeric(*sz)) break;
+                sz = fast_atoreal_move<float>(sz, data[num]);
+            }
+            if (num != 12 && num != 9) {
+                ASSIMP_LOG_ERROR("A line may have either 9 or 12 floats and an optional texture");
+                continue;
+            }
+
+            MeshInformation *output = nullptr;
+
+            const char *sz2 = sz;
+            unsigned int length;
+            if (!IsLineEnd(*sz)) {
+                while (!IsSpaceOrNewLine(*sz2))
+                    ++sz2;
+                length = (unsigned int)(sz2 - sz);
+            } else if (9 == num) {
+                sz = "%default%";
+                length = 9;
+            } else {
+                sz = "";
+                length = 0;
+            }
+
+            // search in the list of meshes whether we have one with this texture
+            for (auto &mesh : (*curGroup).meshes) {
+                if (length == mesh.name.length() && (length ? !::strcmp(sz, mesh.name.c_str()) : true)) {
+                    output = &mesh;
+                    break;
+                }
+            }
+            // if we don't have the mesh, create it
+            if (!output) {
+                (*curGroup).meshes.push_back(MeshInformation(std::string(sz, length)));
+                output = &((*curGroup).meshes.back());
+            }
+            if (12 == num) {
+                aiColor4D v(data[0], data[1], data[2], 1.0f);
+                output->colors.push_back(v);
+                output->colors.push_back(v);
+                output->colors.push_back(v);
+
+                output->vertices.push_back(aiVector3D(data[3], data[4], data[5]));
+                output->vertices.push_back(aiVector3D(data[6], data[7], data[8]));
+                output->vertices.push_back(aiVector3D(data[9], data[10], data[11]));
+            } else {
+                output->vertices.push_back(aiVector3D(data[0], data[1], data[2]));
+                output->vertices.push_back(aiVector3D(data[3], data[4], data[5]));
+                output->vertices.push_back(aiVector3D(data[6], data[7], data[8]));
+            }
+        }
+    }
+
+    pScene->mRootNode = new aiNode();
+    pScene->mRootNode->mName.Set("<RawRoot>");
+
+    // count the number of valid groups
+    // (meshes can't be empty)
+    for (auto &outGroup : outGroups) {
+        if (!outGroup.meshes.empty()) {
+            ++pScene->mRootNode->mNumChildren;
+            pScene->mNumMeshes += (unsigned int)outGroup.meshes.size();
+        }
+    }
+
+    if (!pScene->mNumMeshes) {
+        throw DeadlyImportError("RAW: No meshes loaded. The file seems to be corrupt or empty.");
+    }
+
+    pScene->mMeshes = new aiMesh *[pScene->mNumMeshes];
+    aiNode **cc;
+    if (1 == pScene->mRootNode->mNumChildren) {
+        cc = &pScene->mRootNode;
+        pScene->mRootNode->mNumChildren = 0;
+    } else {
+        cc = new aiNode *[pScene->mRootNode->mNumChildren];
+        memset(cc, 0, sizeof(aiNode *) * pScene->mRootNode->mNumChildren);
+        pScene->mRootNode->mChildren = cc;
+    }
+
+    pScene->mNumMaterials = pScene->mNumMeshes;
+    aiMaterial **mats = pScene->mMaterials = new aiMaterial *[pScene->mNumMaterials];
+
+    unsigned int meshIdx = 0;
+    for (auto &outGroup : outGroups) {
+        if (outGroup.meshes.empty()) continue;
+
+        aiNode *node;
+        if (pScene->mRootNode->mNumChildren) {
+            node = *cc = new aiNode();
+            node->mParent = pScene->mRootNode;
+        } else
+            node = *cc;
+        node->mName.Set(outGroup.name);
+
+        // add all meshes
+        node->mNumMeshes = (unsigned int)outGroup.meshes.size();
+        unsigned int *pi = node->mMeshes = new unsigned int[node->mNumMeshes];
+        for (std::vector<MeshInformation>::iterator it2 = outGroup.meshes.begin(),
+                                                    end2 = outGroup.meshes.end();
+                it2 != end2; ++it2) {
+            ai_assert(!(*it2).vertices.empty());
+
+            // allocate the mesh
+            *pi++ = meshIdx;
+            aiMesh *mesh = pScene->mMeshes[meshIdx] = new aiMesh();
+            mesh->mMaterialIndex = meshIdx++;
+
+            mesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
+
+            // allocate storage for the vertex components and copy them
+            mesh->mNumVertices = (unsigned int)(*it2).vertices.size();
+            mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+            ::memcpy(mesh->mVertices, &(*it2).vertices[0], sizeof(aiVector3D) * mesh->mNumVertices);
+
+            if ((*it2).colors.size()) {
+                ai_assert((*it2).colors.size() == mesh->mNumVertices);
+
+                mesh->mColors[0] = new aiColor4D[mesh->mNumVertices];
+                ::memcpy(mesh->mColors[0], &(*it2).colors[0], sizeof(aiColor4D) * mesh->mNumVertices);
+            }
+
+            // generate triangles
+            ai_assert(0 == mesh->mNumVertices % 3);
+            aiFace *fc = mesh->mFaces = new aiFace[mesh->mNumFaces = mesh->mNumVertices / 3];
+            aiFace *const fcEnd = fc + mesh->mNumFaces;
+            unsigned int n = 0;
+            while (fc != fcEnd) {
+                aiFace &f = *fc++;
+                f.mIndices = new unsigned int[f.mNumIndices = 3];
+                for (unsigned int m = 0; m < 3; ++m)
+                    f.mIndices[m] = n++;
+            }
+
+            // generate a material for the mesh
+            aiMaterial *mat = new aiMaterial();
+
+            aiColor4D clr(1.0f, 1.0f, 1.0f, 1.0f);
+            if ("%default%" == (*it2).name) // a gray default material
+            {
+                clr.r = clr.g = clr.b = 0.6f;
+            } else if ((*it2).name.length() > 0) // a texture
+            {
+                aiString s;
+                s.Set((*it2).name);
+                mat->AddProperty(&s, AI_MATKEY_TEXTURE_DIFFUSE(0));
+            }
+            mat->AddProperty<aiColor4D>(&clr, 1, AI_MATKEY_COLOR_DIFFUSE);
+            *mats++ = mat;
+        }
+    }
+}
+
+#endif // !! ASSIMP_BUILD_NO_RAW_IMPORTER