diff options
Diffstat (limited to 'src/3rdparty/assimp/code/STLLoader.cpp')
| -rw-r--r-- | src/3rdparty/assimp/code/STLLoader.cpp | 537 |
1 files changed, 0 insertions, 537 deletions
diff --git a/src/3rdparty/assimp/code/STLLoader.cpp b/src/3rdparty/assimp/code/STLLoader.cpp deleted file mode 100644 index be4c7584d..000000000 --- a/src/3rdparty/assimp/code/STLLoader.cpp +++ /dev/null @@ -1,537 +0,0 @@ -/* ---------------------------------------------------------------------------- -Open Asset Import Library (assimp) ---------------------------------------------------------------------------- - -Copyright (c) 2006-2017, 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 */ - - -#ifndef ASSIMP_BUILD_NO_STL_IMPORTER - -// internal headers -#include "STLLoader.h" -#include "ParsingUtils.h" -#include "fast_atof.h" -#include <memory> -#include <assimp/IOSystem.hpp> -#include <assimp/scene.h> -#include <assimp/DefaultLogger.hpp> -#include <assimp/importerdesc.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 -static bool IsBinarySTL(const char* buffer, unsigned int fileSize) { - if( fileSize < 84 ) { - return false; - } - - const char *facecount_pos = buffer + 80; - uint32_t faceCount( 0 ); - ::memcpy( &faceCount, facecount_pos, sizeof( uint32_t ) ); - 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". -static 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; - - bool isASCII( strncmp( buffer, "solid", 5 ) == 0 ); - if( isASCII ) { - // A lot of importers are write solid even if the file is binary. So we have to check for ASCII-characters. - if( fileSize >= 500 ) { - isASCII = true; - for( unsigned int i = 0; i < 500; i++ ) { - if( buffer[ i ] > 127 ) { - isASCII = false; - break; - } - } - } - } - return isASCII; -} -} // namespace - -// ------------------------------------------------------------------------------------------------ -// Constructor to be privately used by Importer -STLImporter::STLImporter() - : mBuffer(), - fileSize(), - pScene() -{} - -// ------------------------------------------------------------------------------------------------ -// 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; -} - -void addFacesToMesh(aiMesh* pMesh) -{ - 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; - } - } -} - -// ------------------------------------------------------------------------------------------------ -// Imports the given file into the given scene structure. -void STLImporter::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 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 = (ai_real) 0.6; - - // allocate a single node - pScene->mRootNode = new aiNode(); - - bool bMatClr = false; - - if (IsBinarySTL(mBuffer, fileSize)) { - bMatClr = LoadBinaryFile(); - } else if (IsAsciiSTL(mBuffer, fileSize)) { - LoadASCIIFile( pScene->mRootNode ); - } else { - throw DeadlyImportError( "Failed to determine STL storage representation for " + pFile + "."); - } - - // create a single default material, using a white 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(ai_real(1.0),ai_real(1.0),ai_real(1.0),ai_real(1.0)); - if (bMatClr) { - clrDiffuse = clrColorDefault; - } - pcMat->AddProperty(&clrDiffuse,1,AI_MATKEY_COLOR_DIFFUSE); - pcMat->AddProperty(&clrDiffuse,1,AI_MATKEY_COLOR_SPECULAR); - clrDiffuse = aiColor4D( ai_real(1.0), ai_real(1.0), ai_real(1.0), ai_real(1.0)); - 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( aiNode *root ) { - std::vector<aiMesh*> meshes; - std::vector<aiNode*> nodes; - const char* sz = mBuffer; - const char* bufferEnd = mBuffer + fileSize; - std::vector<aiVector3D> positionBuffer; - std::vector<aiVector3D> normalBuffer; - - // try to guess how many vertices we could have - // assume we'll need 160 bytes for each face - size_t sizeEstimate = std::max(1u, fileSize / 160u ) * 3; - positionBuffer.reserve(sizeEstimate); - normalBuffer.reserve(sizeEstimate); - - while (IsAsciiSTL(sz, static_cast<unsigned int>(bufferEnd - sz))) { - std::vector<unsigned int> meshIndices; - aiMesh* pMesh = new aiMesh(); - pMesh->mMaterialIndex = 0; - meshIndices.push_back((unsigned int) meshes.size() ); - meshes.push_back(pMesh); - aiNode *node = new aiNode; - node->mParent = root; - nodes.push_back( node ); - 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))) { - if (temp >= MAXLEN) { - throw DeadlyImportError( "STL: Node name too long" ); - } - std::string name( szMe, temp ); - node->mName.Set( name.c_str() ); - //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>"); - } - - unsigned int faceVertexCounter = 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)) && *(sz + 5) != '\0') { - - if (faceVertexCounter != 3) { - DefaultLogger::get()->warn("STL: A new facet begins but the old is not yet complete"); - } - faceVertexCounter = 0; - normalBuffer.push_back(aiVector3D()); - aiVector3D* vn = &normalBuffer.back(); - - sz += 6; - SkipSpaces(&sz); - if (strncmp(sz,"normal",6)) { - DefaultLogger::get()->warn("STL: a facet normal vector was expected but not found"); - } else { - if (sz[6] == '\0') { - throw DeadlyImportError("STL: unexpected EOF while parsing facet"); - } - sz += 7; - SkipSpaces(&sz); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->x ); - SkipSpaces(&sz); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->y ); - SkipSpaces(&sz); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->z ); - normalBuffer.push_back(*vn); - normalBuffer.push_back(*vn); - } - } else if (!strncmp(sz,"vertex",6) && ::IsSpaceOrNewLine(*(sz+6))) { // vertex 1.50000 1.50000 0.00000 - if (faceVertexCounter >= 3) { - DefaultLogger::get()->error("STL: a facet with more than 3 vertices has been found"); - ++sz; - } else { - if (sz[6] == '\0') { - throw DeadlyImportError("STL: unexpected EOF while parsing facet"); - } - sz += 7; - SkipSpaces(&sz); - positionBuffer.push_back(aiVector3D()); - aiVector3D* vn = &positionBuffer.back(); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->x ); - SkipSpaces(&sz); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->y ); - SkipSpaces(&sz); - sz = fast_atoreal_move<ai_real>(sz, (ai_real&)vn->z ); - faceVertexCounter++; - } - } else if (!::strncmp(sz,"endsolid",8)) { - do { - ++sz; - } while (!::IsLineEnd(*sz)); - SkipSpacesAndLineEnd(&sz); - // finished! - break; - } else { // else skip the whole identifier - do { - ++sz; - } while (!::IsSpaceOrNewLine(*sz)); - } - } - - if (positionBuffer.empty()) { - pMesh->mNumFaces = 0; - throw DeadlyImportError("STL: ASCII file is empty or invalid; no data loaded"); - } - if (positionBuffer.size() % 3 != 0) { - pMesh->mNumFaces = 0; - throw DeadlyImportError("STL: Invalid number of vertices"); - } - if (normalBuffer.size() != positionBuffer.size()) { - pMesh->mNumFaces = 0; - throw DeadlyImportError("Normal buffer size does not match position buffer size"); - } - pMesh->mNumFaces = static_cast<unsigned int>(positionBuffer.size() / 3); - pMesh->mNumVertices = static_cast<unsigned int>(positionBuffer.size()); - pMesh->mVertices = new aiVector3D[pMesh->mNumVertices]; - memcpy(pMesh->mVertices, &positionBuffer[0].x, pMesh->mNumVertices * sizeof(aiVector3D)); - positionBuffer.clear(); - pMesh->mNormals = new aiVector3D[pMesh->mNumVertices]; - memcpy(pMesh->mNormals, &normalBuffer[0].x, pMesh->mNumVertices * sizeof(aiVector3D)); - normalBuffer.clear(); - - // now copy faces - addFacesToMesh(pMesh); - - // assign the meshes to the current node - pushMeshesToNode( meshIndices, node ); - } - - // now add the loaded meshes - pScene->mNumMeshes = (unsigned int)meshes.size(); - pScene->mMeshes = new aiMesh*[pScene->mNumMeshes]; - for (size_t i = 0; i < meshes.size(); i++) { - pScene->mMeshes[ i ] = meshes[i]; - } - - root->mNumChildren = (unsigned int) nodes.size(); - root->mChildren = new aiNode*[ root->mNumChildren ]; - for ( size_t i=0; i<nodes.size(); ++i ) { - root->mChildren[ i ] = nodes[ i ]; - } -} - -// ------------------------------------------------------------------------------------------------ -// Read a binary STL file -bool STLImporter::LoadBinaryFile() -{ - // allocate one mesh - pScene->mNumMeshes = 1; - pScene->mMeshes = new aiMesh*[1]; - aiMesh* pMesh = pScene->mMeshes[0] = new aiMesh(); - pMesh->mMaterialIndex = 0; - - // skip the first 80 bytes - if (fileSize < 84) { - throw DeadlyImportError("STL: file is too small for the header"); - } - bool bIsMaterialise = false; - - // search for an occurrence of "COLOR=" in the header - const unsigned char* sz2 = (const unsigned char*)mBuffer; - const unsigned 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"); - const ai_real invByte = (ai_real)1.0 / ( ai_real )255.0; - clrColorDefault.r = (*sz2++) * invByte; - clrColorDefault.g = (*sz2++) * invByte; - clrColorDefault.b = (*sz2++) * invByte; - clrColorDefault.a = (*sz2++) * invByte; - break; - } - } - const unsigned char* sz = (const unsigned char*)mBuffer + 80; - - // now read the number of facets - 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 = 1.0; - const ai_real invVal( (ai_real)1.0 / ( ai_real )31.0 ); - if (bIsMaterialise) // this is reversed - { - clr->r = (color & 0x31u) *invVal; - clr->g = ((color & (0x31u<<5))>>5u) *invVal; - clr->b = ((color & (0x31u<<10))>>10u) *invVal; - } - else - { - clr->b = (color & 0x31u) *invVal; - clr->g = ((color & (0x31u<<5))>>5u) *invVal; - clr->r = ((color & (0x31u<<10))>>10u) *invVal; - } - // assign the color to all vertices of the face - *(clr+1) = *clr; - *(clr+2) = *clr; - } - } - - // now copy faces - addFacesToMesh(pMesh); - - // add all created meshes to the single node - pScene->mRootNode->mNumMeshes = pScene->mNumMeshes; - pScene->mRootNode->mMeshes = new unsigned int[pScene->mNumMeshes]; - for (unsigned int i = 0; i < pScene->mNumMeshes; i++) - pScene->mRootNode->mMeshes[i] = i; - - if (bIsMaterialise && !pMesh->mColors[0]) - { - // use the color as diffuse material color - return true; - } - return false; -} - -void STLImporter::pushMeshesToNode( std::vector<unsigned int> &meshIndices, aiNode *node ) { - ai_assert( nullptr != node ); - if ( meshIndices.empty() ) { - return; - } - - node->mNumMeshes = static_cast<unsigned int>( meshIndices.size() ); - node->mMeshes = new unsigned int[ meshIndices.size() ]; - for ( size_t i=0; i<meshIndices.size(); ++i ) { - node->mMeshes[ i ] = meshIndices[ i ]; - } - meshIndices.clear(); -} - -#endif // !! ASSIMP_BUILD_NO_STL_IMPORTER |