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diff --git a/src/3rdparty/assimp/code/STLLoader.cpp b/src/3rdparty/assimp/code/STLLoader.cpp
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--- a/src/3rdparty/assimp/code/STLLoader.cpp
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-/*
----------------------------------------------------------------------------
-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