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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 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 <memory>
-#include <assimp/IOSystem.hpp>
-#include <assimp/DefaultLogger.hpp>
-#include <assimp/scene.h>
-#include <assimp/importerdesc.h>
-
-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()
-{}
-
-// ------------------------------------------------------------------------------------------------
-// Destructor, private as well
-RAWImporter::~RAWImporter()
-{}
-
-// ------------------------------------------------------------------------------------------------
-// Returns whether the class can handle the format of the given file.
-bool RAWImporter::CanRead( const std::string& pFile, IOSystem* /*pIOHandler*/, bool /*checkSig*/) const
-{
- return SimpleExtensionCheck(pFile,"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() == NULL) {
- 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 = NULL;
- 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 = NULL;
-
- 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
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