move 3rd-party librarys into libs/ and add built-in honeysuckle

2 files changed, 420 insertions, 0 deletions

diff --git a/libs/assimp/code/AssetLib/OFF/OFFLoader.cpp b/libs/assimp/code/AssetLib/OFF/OFFLoader.cpp
new file mode 100644
index 0000000..640e792
--- /dev/null
+++ b/libs/assimp/code/AssetLib/OFF/OFFLoader.cpp
@@ -0,0 +1,334 @@
+/*
+---------------------------------------------------------------------------
+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  OFFLoader.cpp
+ *  @brief Implementation of the OFF importer class
+ */
+
+
+#ifndef ASSIMP_BUILD_NO_OFF_IMPORTER
+
+// internal headers
+#include "OFFLoader.h"
+#include <assimp/ParsingUtils.h>
+#include <assimp/fast_atof.h>
+#include <memory>
+#include <assimp/IOSystem.hpp>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/importerdesc.h>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "OFF Importer",
+    "",
+    "",
+    "",
+    aiImporterFlags_SupportBinaryFlavour,
+    0,
+    0,
+    0,
+    0,
+    "off"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+OFFImporter::OFFImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+OFFImporter::~OFFImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool OFFImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool /*checkSig*/) const
+{
+    static const char* tokens[] = { "off" };
+    return SearchFileHeaderForToken(pIOHandler,pFile,tokens,AI_COUNT_OF(tokens),3);
+}
+
+// ------------------------------------------------------------------------------------------------
+const aiImporterDesc* OFFImporter::GetInfo () const
+{
+    return &desc;
+}
+
+
+// skip blank space, lines and comments
+static void NextToken(const char **car, const char* end) {
+  SkipSpacesAndLineEnd(car);
+  while (*car < end && (**car == '#' || **car == '\n' || **car == '\r')) {
+    SkipLine(car);
+    SkipSpacesAndLineEnd(car);
+  }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void OFFImporter::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 OFF file ", pFile, ".");
+    }
+
+    // allocate storage and copy the contents of the file to a memory buffer
+    std::vector<char> mBuffer2;
+    TextFileToBuffer(file.get(),mBuffer2);
+    const char* buffer = &mBuffer2[0];
+
+    // Proper OFF header parser. We only implement normal loading for now.
+    bool hasTexCoord = false, hasNormals = false, hasColors = false;
+    bool hasHomogenous = false, hasDimension = false;
+    unsigned int dimensions = 3;
+    const char* car = buffer;
+    const char* end = buffer + mBuffer2.size();
+    NextToken(&car, end);
+
+    if (car < end - 2 && car[0] == 'S' && car[1] == 'T') {
+      hasTexCoord = true; car += 2;
+    }
+    if (car < end - 1 && car[0] == 'C') {
+      hasColors = true; car++;
+    }
+    if (car < end- 1 && car[0] == 'N') {
+      hasNormals = true; car++;
+    }
+    if (car < end - 1 && car[0] == '4') {
+      hasHomogenous = true; car++;
+    }
+    if (car < end - 1 && car[0] == 'n') {
+      hasDimension = true; car++;
+    }
+    if (car < end - 3 && car[0] == 'O' && car[1] == 'F' && car[2] == 'F') {
+        car += 3;
+	NextToken(&car, end);
+    } else {
+      // in case there is no OFF header (which is allowed by the
+      // specification...), then we might have unintentionally read an
+      // additional dimension from the primitive count fields
+      dimensions = 3;
+      hasHomogenous = false;
+      NextToken(&car, end);
+
+      // at this point the next token should be an integer number
+      if (car >= end - 1 || *car < '0' || *car > '9') {
+	throw DeadlyImportError("OFF: Header is invalid");
+      }
+    }
+    if (hasDimension) {
+        dimensions = strtoul10(car, &car);
+	NextToken(&car, end);
+    }
+    if (dimensions > 3) {
+        throw DeadlyImportError
+	  ("OFF: Number of vertex coordinates higher than 3 unsupported");
+    }
+
+    NextToken(&car, end);
+    const unsigned int numVertices = strtoul10(car, &car);
+    NextToken(&car, end);
+    const unsigned int numFaces = strtoul10(car, &car);
+    NextToken(&car, end);
+    strtoul10(car, &car);  // skip edge count
+    NextToken(&car, end);
+
+    if (!numVertices) {
+        throw DeadlyImportError("OFF: There are no valid vertices");
+    }
+    if (!numFaces) {
+        throw DeadlyImportError("OFF: There are no valid faces");
+    }
+
+    pScene->mNumMeshes = 1;
+    pScene->mMeshes = new aiMesh*[ pScene->mNumMeshes ];
+
+    aiMesh* mesh = new aiMesh();
+    pScene->mMeshes[0] = mesh;
+
+    mesh->mNumFaces = numFaces;
+    aiFace* faces = new aiFace[mesh->mNumFaces];
+    mesh->mFaces = faces;
+
+    mesh->mNumVertices = numVertices;
+    mesh->mVertices = new aiVector3D[numVertices];
+    mesh->mNormals = hasNormals ? new aiVector3D[numVertices] : nullptr;
+    mesh->mColors[0] = hasColors ? new aiColor4D[numVertices] : nullptr;
+
+    if (hasTexCoord) {
+        mesh->mNumUVComponents[0] = 2;
+        mesh->mTextureCoords[0] = new aiVector3D[numVertices];
+    }
+    char line[4096];
+    buffer = car;
+    const char *sz = car;
+
+    // now read all vertex lines
+    for (unsigned int i = 0; i < numVertices; ++i) {
+        if(!GetNextLine(buffer, line)) {
+            ASSIMP_LOG_ERROR("OFF: The number of verts in the header is incorrect");
+            break;
+        }
+        aiVector3D& v = mesh->mVertices[i];
+        sz = line;
+
+	// helper array to write a for loop over possible dimension values
+	ai_real* vec[3] = {&v.x, &v.y, &v.z};
+
+	// stop at dimensions: this allows loading 1D or 2D coordinate vertices
+        for (unsigned int dim = 0; dim < dimensions; ++dim ) {
+	    SkipSpaces(&sz);
+	    sz = fast_atoreal_move<ai_real>(sz, *vec[dim]);
+	}
+
+	// if has homogeneous coordinate, divide others by this one
+	if (hasHomogenous) {
+	    SkipSpaces(&sz);
+	    ai_real w = 1.;
+	    sz = fast_atoreal_move<ai_real>(sz, w);
+            for (unsigned int dim = 0; dim < dimensions; ++dim ) {
+	        *(vec[dim]) /= w;
+	    }
+	}
+
+	// read optional normals
+	if (hasNormals) {
+	    aiVector3D& n = mesh->mNormals[i];
+	    SkipSpaces(&sz);
+	    sz = fast_atoreal_move<ai_real>(sz,(ai_real&)n.x);
+	    SkipSpaces(&sz);
+	    sz = fast_atoreal_move<ai_real>(sz,(ai_real&)n.y);
+	    SkipSpaces(&sz);
+	    fast_atoreal_move<ai_real>(sz,(ai_real&)n.z);
+	}
+
+	// reading colors is a pain because the specification says it can be
+	// integers or floats, and any number of them between 1 and 4 included,
+	// until the next comment or end of line
+	// in theory should be testing type !
+	if (hasColors) {
+	    aiColor4D& c = mesh->mColors[0][i];
+	    SkipSpaces(&sz);
+	    sz = fast_atoreal_move<ai_real>(sz,(ai_real&)c.r);
+            if (*sz != '#' && *sz != '\n' && *sz != '\r') {
+	        SkipSpaces(&sz);
+	        sz = fast_atoreal_move<ai_real>(sz,(ai_real&)c.g);
+            } else {
+	        c.g = 0.;
+	    }
+            if (*sz != '#' && *sz != '\n' && *sz != '\r') {
+	        SkipSpaces(&sz);
+	        sz = fast_atoreal_move<ai_real>(sz,(ai_real&)c.b);
+            } else {
+	        c.b = 0.;
+	    }
+            if (*sz != '#' && *sz != '\n' && *sz != '\r') {
+	        SkipSpaces(&sz);
+	        sz = fast_atoreal_move<ai_real>(sz,(ai_real&)c.a);
+            } else {
+	        c.a = 1.;
+	    }
+	}
+        if (hasTexCoord) {
+	    aiVector3D& t = mesh->mTextureCoords[0][i];
+	    SkipSpaces(&sz);
+	    sz = fast_atoreal_move<ai_real>(sz,(ai_real&)t.x);
+	    SkipSpaces(&sz);
+	    fast_atoreal_move<ai_real>(sz,(ai_real&)t.y);
+	}
+    }
+
+    // load faces with their indices
+    faces = mesh->mFaces;
+    for (unsigned int i = 0; i < numFaces; ) {
+        if(!GetNextLine(buffer,line)) {
+            ASSIMP_LOG_ERROR("OFF: The number of faces in the header is incorrect");
+            break;
+        }
+        unsigned int idx;
+        sz = line; SkipSpaces(&sz);
+        idx = strtoul10(sz,&sz);
+        if(!idx || idx > 9) {
+	    ASSIMP_LOG_ERROR("OFF: Faces with zero indices aren't allowed");
+            --mesh->mNumFaces;
+            continue;
+	}
+	faces->mNumIndices = idx;
+        faces->mIndices = new unsigned int[faces->mNumIndices];
+        for (unsigned int m = 0; m < faces->mNumIndices;++m) {
+            SkipSpaces(&sz);
+            idx = strtoul10(sz,&sz);
+            if (idx >= numVertices) {
+                ASSIMP_LOG_ERROR("OFF: Vertex index is out of range");
+                idx = numVertices - 1;
+            }
+            faces->mIndices[m] = idx;
+        }
+        ++i;
+        ++faces;
+    }
+
+    // generate the output node graph
+    pScene->mRootNode = new aiNode();
+    pScene->mRootNode->mName.Set("<OFFRoot>");
+    pScene->mRootNode->mNumMeshes = 1;
+    pScene->mRootNode->mMeshes = new unsigned int [pScene->mRootNode->mNumMeshes];
+    pScene->mRootNode->mMeshes[0] = 0;
+
+    // generate a default material
+    pScene->mNumMaterials = 1;
+    pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials];
+    aiMaterial* pcMat = new aiMaterial();
+
+    aiColor4D clr( ai_real( 0.6 ), ai_real( 0.6 ), ai_real( 0.6 ), ai_real( 1.0 ) );
+    pcMat->AddProperty(&clr,1,AI_MATKEY_COLOR_DIFFUSE);
+    pScene->mMaterials[0] = pcMat;
+
+    const int twosided = 1;
+    pcMat->AddProperty(&twosided, 1, AI_MATKEY_TWOSIDED);
+}
+
+#endif // !! ASSIMP_BUILD_NO_OFF_IMPORTER
diff --git a/libs/assimp/code/AssetLib/OFF/OFFLoader.h b/libs/assimp/code/AssetLib/OFF/OFFLoader.h
new file mode 100644
index 0000000..04bb7f4
--- /dev/null
+++ b/libs/assimp/code/AssetLib/OFF/OFFLoader.h
@@ -0,0 +1,86 @@
+/*
+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  OFFLoader.h
+ *  @brief Declaration of the OFF importer class.
+ */
+#pragma once
+#ifndef AI_OFFLOADER_H_INCLUDED
+#define AI_OFFLOADER_H_INCLUDED
+
+#include <assimp/BaseImporter.h>
+#include <assimp/types.h>
+#include <vector>
+
+namespace Assimp {
+
+// ---------------------------------------------------------------------------
+/** Importer class for the Object File Format (.off)
+*/
+class OFFImporter : public BaseImporter {
+public:
+    OFFImporter();
+    ~OFFImporter() override;
+
+    // -------------------------------------------------------------------
+    /** Returns whether the class can handle the format of the given file.
+    * See BaseImporter::CanRead() for details.  */
+    bool CanRead(const std::string &pFile, IOSystem *pIOHandler,
+            bool checkSig) const override;
+
+protected:
+    // -------------------------------------------------------------------
+    /** Return importer meta information.
+     * See #BaseImporter::GetInfo for the details
+     */
+    const aiImporterDesc *GetInfo() const override;
+
+    // -------------------------------------------------------------------
+    /** Imports the given file into the given scene structure.
+    * See BaseImporter::InternReadFile() for details
+    */
+    void InternReadFile(const std::string &pFile, aiScene *pScene,
+            IOSystem *pIOHandler) override;
+};
+
+} // end of namespace Assimp
+
+#endif // AI_3DSIMPORTER_H_IN