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Diffstat (limited to 'src/3rdparty/assimp/code/STLLoader.cpp')
-rw-r--r-- | src/3rdparty/assimp/code/STLLoader.cpp | 452 |
1 files changed, 0 insertions, 452 deletions
diff --git a/src/3rdparty/assimp/code/STLLoader.cpp b/src/3rdparty/assimp/code/STLLoader.cpp deleted file mode 100644 index 567f4875b..000000000 --- a/src/3rdparty/assimp/code/STLLoader.cpp +++ /dev/null @@ -1,452 +0,0 @@ -/* ---------------------------------------------------------------------------- -Open Asset Import Library (assimp) ---------------------------------------------------------------------------- - -Copyright (c) 2006-2012, 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 Implementation of the STL importer class */ - -#include "AssimpPCH.h" -#ifndef ASSIMP_BUILD_NO_STL_IMPORTER - -// internal headers -#include "STLLoader.h" -#include "ParsingUtils.h" -#include "fast_atof.h" - -using namespace Assimp; - -namespace { -static const aiImporterDesc desc = { - "Stereolithography (STL) Importer", - "", - "", - "", - aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour, - 0, - 0, - 0, - 0, - "stl" -}; - -// A valid binary STL buffer should consist of the following elements, in order: -// 1) 80 byte header -// 2) 4 byte face count -// 3) 50 bytes per face -bool IsBinarySTL(const char* buffer, unsigned int fileSize) { - if (fileSize < 84) - return false; - - const uint32_t faceCount = *reinterpret_cast<const uint32_t*>(buffer + 80); - const uint32_t expectedBinaryFileSize = faceCount * 50 + 84; - - return expectedBinaryFileSize == fileSize; -} - -// An ascii STL buffer will begin with "solid NAME", where NAME is optional. -// Note: The "solid NAME" check is necessary, but not sufficient, to determine -// if the buffer is ASCII; a binary header could also begin with "solid NAME". -bool IsAsciiSTL(const char* buffer, unsigned int fileSize) { - if (IsBinarySTL(buffer, fileSize)) - return false; - - const char* bufferEnd = buffer + fileSize; - - if (!SkipSpaces(&buffer)) - return false; - - if (buffer + 5 >= bufferEnd) - return false; - - return strncmp(buffer, "solid", 5) == 0; -} -} // namespace - -// ------------------------------------------------------------------------------------------------ -// Constructor to be privately used by Importer -STLImporter::STLImporter() -{} - -// ------------------------------------------------------------------------------------------------ -// Destructor, private as well -STLImporter::~STLImporter() -{} - -// ------------------------------------------------------------------------------------------------ -// Returns whether the class can handle the format of the given file. -bool STLImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const -{ - const std::string extension = GetExtension(pFile); - - if (extension == "stl") - return true; - else if (!extension.length() || checkSig) { - if (!pIOHandler) - return true; - const char* tokens[] = {"STL","solid"}; - return SearchFileHeaderForToken(pIOHandler,pFile,tokens,2); - } - return false; -} - -// ------------------------------------------------------------------------------------------------ -const aiImporterDesc* STLImporter::GetInfo () const -{ - return &desc; -} - -// ------------------------------------------------------------------------------------------------ -// Imports the given file into the given scene structure. -void STLImporter::InternReadFile( const std::string& pFile, - aiScene* pScene, IOSystem* pIOHandler) -{ - boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile, "rb")); - - // Check whether we can read from the file - if( file.get() == NULL) { - throw DeadlyImportError( "Failed to open STL file " + pFile + "."); - } - - fileSize = (unsigned int)file->FileSize(); - - // 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); - - this->pScene = pScene; - this->mBuffer = &mBuffer2[0]; - - // the default vertex color is light gray. - clrColorDefault.r = clrColorDefault.g = clrColorDefault.b = clrColorDefault.a = 0.6f; - - // allocate one mesh - pScene->mNumMeshes = 1; - pScene->mMeshes = new aiMesh*[1]; - aiMesh* pMesh = pScene->mMeshes[0] = new aiMesh(); - pMesh->mMaterialIndex = 0; - - // allocate a single node - pScene->mRootNode = new aiNode(); - pScene->mRootNode->mNumMeshes = 1; - pScene->mRootNode->mMeshes = new unsigned int[1]; - pScene->mRootNode->mMeshes[0] = 0; - - bool bMatClr = false; - - if (IsBinarySTL(mBuffer, fileSize)) { - bMatClr = LoadBinaryFile(); - } else if (IsAsciiSTL(mBuffer, fileSize)) { - LoadASCIIFile(); - } else { - throw DeadlyImportError( "Failed to determine STL storage representation for " + pFile + "."); - } - - // now copy faces - pMesh->mFaces = new aiFace[pMesh->mNumFaces]; - for (unsigned int i = 0, p = 0; i < pMesh->mNumFaces;++i) { - - aiFace& face = pMesh->mFaces[i]; - face.mIndices = new unsigned int[face.mNumIndices = 3]; - for (unsigned int o = 0; o < 3;++o,++p) { - face.mIndices[o] = p; - } - } - - // create a single default material, using a light gray diffuse color for consistency with - // other geometric types (e.g., PLY). - aiMaterial* pcMat = new aiMaterial(); - aiString s; - s.Set(AI_DEFAULT_MATERIAL_NAME); - pcMat->AddProperty(&s, AI_MATKEY_NAME); - - aiColor4D clrDiffuse(0.6f,0.6f,0.6f,1.0f); - if (bMatClr) { - clrDiffuse = clrColorDefault; - } - pcMat->AddProperty(&clrDiffuse,1,AI_MATKEY_COLOR_DIFFUSE); - pcMat->AddProperty(&clrDiffuse,1,AI_MATKEY_COLOR_SPECULAR); - clrDiffuse = aiColor4D(0.05f,0.05f,0.05f,1.0f); - pcMat->AddProperty(&clrDiffuse,1,AI_MATKEY_COLOR_AMBIENT); - - pScene->mNumMaterials = 1; - pScene->mMaterials = new aiMaterial*[1]; - pScene->mMaterials[0] = pcMat; -} -// ------------------------------------------------------------------------------------------------ -// Read an ASCII STL file -void STLImporter::LoadASCIIFile() -{ - aiMesh* pMesh = pScene->mMeshes[0]; - - const char* sz = mBuffer; - SkipSpaces(&sz); - ai_assert(!IsLineEnd(sz)); - - sz += 5; // skip the "solid" - SkipSpaces(&sz); - const char* szMe = sz; - while (!::IsSpaceOrNewLine(*sz)) { - sz++; - } - - size_t temp; - // setup the name of the node - if ((temp = (size_t)(sz-szMe))) { - - pScene->mRootNode->mName.length = temp; - memcpy(pScene->mRootNode->mName.data,szMe,temp); - pScene->mRootNode->mName.data[temp] = '\0'; - } - else pScene->mRootNode->mName.Set("<STL_ASCII>"); - - // try to guess how many vertices we could have - // assume we'll need 160 bytes for each face - pMesh->mNumVertices = ( pMesh->mNumFaces = std::max(1u,fileSize / 160u )) * 3; - pMesh->mVertices = new aiVector3D[pMesh->mNumVertices]; - pMesh->mNormals = new aiVector3D[pMesh->mNumVertices]; - - unsigned int curFace = 0, curVertex = 3; - for ( ;; ) - { - // go to the next token - if(!SkipSpacesAndLineEnd(&sz)) - { - // seems we're finished although there was no end marker - DefaultLogger::get()->warn("STL: unexpected EOF. \'endsolid\' keyword was expected"); - break; - } - // facet normal -0.13 -0.13 -0.98 - if (!strncmp(sz,"facet",5) && IsSpaceOrNewLine(*(sz+5))) { - - if (3 != curVertex) { - DefaultLogger::get()->warn("STL: A new facet begins but the old is not yet complete"); - } - if (pMesh->mNumFaces == curFace) { - ai_assert(pMesh->mNumFaces != 0); - - // need to resize the arrays, our size estimate was wrong - unsigned int iNeededSize = (unsigned int)(sz-mBuffer) / pMesh->mNumFaces; - if (iNeededSize <= 160)iNeededSize >>= 1; // prevent endless looping - unsigned int add = (unsigned int)((mBuffer+fileSize)-sz) / iNeededSize; - add += add >> 3; // add 12.5% as buffer - iNeededSize = (pMesh->mNumFaces + add)*3; - aiVector3D* pv = new aiVector3D[iNeededSize]; - memcpy(pv,pMesh->mVertices,pMesh->mNumVertices*sizeof(aiVector3D)); - delete[] pMesh->mVertices; - pMesh->mVertices = pv; - pv = new aiVector3D[iNeededSize]; - memcpy(pv,pMesh->mNormals,pMesh->mNumVertices*sizeof(aiVector3D)); - delete[] pMesh->mNormals; - pMesh->mNormals = pv; - - pMesh->mNumVertices = iNeededSize; - pMesh->mNumFaces += add; - } - aiVector3D* vn = &pMesh->mNormals[curFace++*3]; - - sz += 6; - curVertex = 0; - SkipSpaces(&sz); - if (strncmp(sz,"normal",6)) { - DefaultLogger::get()->warn("STL: a facet normal vector was expected but not found"); - } - else - { - sz += 7; - SkipSpaces(&sz); - sz = fast_atoreal_move<float>(sz, (float&)vn->x ); - SkipSpaces(&sz); - sz = fast_atoreal_move<float>(sz, (float&)vn->y ); - SkipSpaces(&sz); - sz = fast_atoreal_move<float>(sz, (float&)vn->z ); - *(vn+1) = *vn; - *(vn+2) = *vn; - } - } - // vertex 1.50000 1.50000 0.00000 - else if (!strncmp(sz,"vertex",6) && ::IsSpaceOrNewLine(*(sz+6))) - { - if (3 == curVertex) { - DefaultLogger::get()->error("STL: a facet with more than 3 vertices has been found"); - } - else - { - sz += 7; - SkipSpaces(&sz); - aiVector3D* vn = &pMesh->mVertices[(curFace-1)*3 + curVertex++]; - sz = fast_atoreal_move<float>(sz, (float&)vn->x ); - SkipSpaces(&sz); - sz = fast_atoreal_move<float>(sz, (float&)vn->y ); - SkipSpaces(&sz); - sz = fast_atoreal_move<float>(sz, (float&)vn->z ); - } - } - else if (!::strncmp(sz,"endsolid",8)) { - // finished! - break; - } - // else skip the whole identifier - else while (!::IsSpaceOrNewLine(*sz)) { - ++sz; - } - } - - if (!curFace) { - pMesh->mNumFaces = 0; - throw DeadlyImportError("STL: ASCII file is empty or invalid; no data loaded"); - } - pMesh->mNumFaces = curFace; - pMesh->mNumVertices = curFace*3; - // we are finished! -} - -// ------------------------------------------------------------------------------------------------ -// Read a binary STL file -bool STLImporter::LoadBinaryFile() -{ - // skip the first 80 bytes - if (fileSize < 84) { - throw DeadlyImportError("STL: file is too small for the header"); - } - bool bIsMaterialise = false; - - // search for an occurence of "COLOR=" in the header - const char* sz2 = (const char*)mBuffer; - const char* const szEnd = sz2+80; - while (sz2 < szEnd) { - - if ('C' == *sz2++ && 'O' == *sz2++ && 'L' == *sz2++ && - 'O' == *sz2++ && 'R' == *sz2++ && '=' == *sz2++) { - - // read the default vertex color for facets - bIsMaterialise = true; - DefaultLogger::get()->info("STL: Taking code path for Materialise files"); - clrColorDefault.r = (*sz2++) / 255.0f; - clrColorDefault.g = (*sz2++) / 255.0f; - clrColorDefault.b = (*sz2++) / 255.0f; - clrColorDefault.a = (*sz2++) / 255.0f; - break; - } - } - const unsigned char* sz = (const unsigned char*)mBuffer + 80; - - // now read the number of facets - aiMesh* pMesh = pScene->mMeshes[0]; - pScene->mRootNode->mName.Set("<STL_BINARY>"); - - pMesh->mNumFaces = *((uint32_t*)sz); - sz += 4; - - if (fileSize < 84 + pMesh->mNumFaces*50) { - throw DeadlyImportError("STL: file is too small to hold all facets"); - } - - if (!pMesh->mNumFaces) { - throw DeadlyImportError("STL: file is empty. There are no facets defined"); - } - - pMesh->mNumVertices = pMesh->mNumFaces*3; - - aiVector3D* vp,*vn; - vp = pMesh->mVertices = new aiVector3D[pMesh->mNumVertices]; - vn = pMesh->mNormals = new aiVector3D[pMesh->mNumVertices]; - - for (unsigned int i = 0; i < pMesh->mNumFaces;++i) { - - // NOTE: Blender sometimes writes empty normals ... this is not - // our fault ... the RemoveInvalidData helper step should fix that - *vn = *((aiVector3D*)sz); - sz += sizeof(aiVector3D); - *(vn+1) = *vn; - *(vn+2) = *vn; - vn += 3; - - *vp++ = *((aiVector3D*)sz); - sz += sizeof(aiVector3D); - - *vp++ = *((aiVector3D*)sz); - sz += sizeof(aiVector3D); - - *vp++ = *((aiVector3D*)sz); - sz += sizeof(aiVector3D); - - uint16_t color = *((uint16_t*)sz); - sz += 2; - - if (color & (1 << 15)) - { - // seems we need to take the color - if (!pMesh->mColors[0]) - { - pMesh->mColors[0] = new aiColor4D[pMesh->mNumVertices]; - for (unsigned int i = 0; i <pMesh->mNumVertices;++i) - *pMesh->mColors[0]++ = this->clrColorDefault; - pMesh->mColors[0] -= pMesh->mNumVertices; - - DefaultLogger::get()->info("STL: Mesh has vertex colors"); - } - aiColor4D* clr = &pMesh->mColors[0][i*3]; - clr->a = 1.0f; - if (bIsMaterialise) // this is reversed - { - clr->r = (color & 0x31u) / 31.0f; - clr->g = ((color & (0x31u<<5))>>5u) / 31.0f; - clr->b = ((color & (0x31u<<10))>>10u) / 31.0f; - } - else - { - clr->b = (color & 0x31u) / 31.0f; - clr->g = ((color & (0x31u<<5))>>5u) / 31.0f; - clr->r = ((color & (0x31u<<10))>>10u) / 31.0f; - } - // assign the color to all vertices of the face - *(clr+1) = *clr; - *(clr+2) = *clr; - } - } - if (bIsMaterialise && !pMesh->mColors[0]) - { - // use the color as diffuse material color - return true; - } - return false; -} - -#endif // !! ASSIMP_BUILD_NO_STL_IMPORTER |