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annotate libs/assimp/STLExporter.cpp @ 0:b2f14e535253

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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nuclear@0 1 /*
nuclear@0 2 Open Asset Import Library (assimp)
nuclear@0 3 ----------------------------------------------------------------------
nuclear@0 4
nuclear@0 5 Copyright (c) 2006-2012, assimp team
nuclear@0 6 All rights reserved.
nuclear@0 7
nuclear@0 8 Redistribution and use of this software in source and binary forms,
nuclear@0 9 with or without modification, are permitted provided that the
nuclear@0 10 following conditions are met:
nuclear@0 11
nuclear@0 12 * Redistributions of source code must retain the above
nuclear@0 13 copyright notice, this list of conditions and the
nuclear@0 14 following disclaimer.
nuclear@0 15
nuclear@0 16 * Redistributions in binary form must reproduce the above
nuclear@0 17 copyright notice, this list of conditions and the
nuclear@0 18 following disclaimer in the documentation and/or other
nuclear@0 19 materials provided with the distribution.
nuclear@0 20
nuclear@0 21 * Neither the name of the assimp team, nor the names of its
nuclear@0 22 contributors may be used to endorse or promote products
nuclear@0 23 derived from this software without specific prior
nuclear@0 24 written permission of the assimp team.
nuclear@0 25
nuclear@0 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 37
nuclear@0 38 ----------------------------------------------------------------------
nuclear@0 39 */
nuclear@0 40
nuclear@0 41 #include "AssimpPCH.h"
nuclear@0 42
nuclear@0 43 #if !defined(ASSIMP_BUILD_NO_EXPORT) && !defined(ASSIMP_BUILD_NO_STL_EXPORTER)
nuclear@0 44
nuclear@0 45 #include "STLExporter.h"
nuclear@0 46 #include "assimp/version.h"
nuclear@0 47
nuclear@0 48 using namespace Assimp;
nuclear@0 49 namespace Assimp {
nuclear@0 50
nuclear@0 51 // ------------------------------------------------------------------------------------------------
nuclear@0 52 // Worker function for exporting a scene to Stereolithograpy. Prototyped and registered in Exporter.cpp
nuclear@0 53 void ExportSceneSTL(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene)
nuclear@0 54 {
nuclear@0 55 // invoke the exporter
nuclear@0 56 STLExporter exporter(pFile, pScene);
nuclear@0 57
nuclear@0 58 // we're still here - export successfully completed. Write the file.
nuclear@0 59 boost::scoped_ptr<IOStream> outfile (pIOSystem->Open(pFile,"wt"));
nuclear@0 60 if(outfile == NULL) {
nuclear@0 61 throw DeadlyExportError("could not open output .stl file: " + std::string(pFile));
nuclear@0 62 }
nuclear@0 63
nuclear@0 64 outfile->Write( exporter.mOutput.str().c_str(), static_cast<size_t>(exporter.mOutput.tellp()),1);
nuclear@0 65 }
nuclear@0 66
nuclear@0 67 } // end of namespace Assimp
nuclear@0 68
nuclear@0 69
nuclear@0 70 // ------------------------------------------------------------------------------------------------
nuclear@0 71 STLExporter :: STLExporter(const char* _filename, const aiScene* pScene)
nuclear@0 72 : filename(_filename)
nuclear@0 73 , pScene(pScene)
nuclear@0 74 , endl("\n")
nuclear@0 75 {
nuclear@0 76 // make sure that all formatting happens using the standard, C locale and not the user's current locale
nuclear@0 77 const std::locale& l = std::locale("C");
nuclear@0 78 mOutput.imbue(l);
nuclear@0 79
nuclear@0 80 const std::string& name = "AssimpScene";
nuclear@0 81
nuclear@0 82 mOutput << "solid " << name << endl;
nuclear@0 83 for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
nuclear@0 84 WriteMesh(pScene->mMeshes[i]);
nuclear@0 85 }
nuclear@0 86 mOutput << "endsolid " << name << endl;
nuclear@0 87 }
nuclear@0 88
nuclear@0 89 // ------------------------------------------------------------------------------------------------
nuclear@0 90 void STLExporter :: WriteMesh(const aiMesh* m)
nuclear@0 91 {
nuclear@0 92 for (unsigned int i = 0; i < m->mNumFaces; ++i) {
nuclear@0 93 const aiFace& f = m->mFaces[i];
nuclear@0 94
nuclear@0 95 // we need per-face normals. We specified aiProcess_GenNormals as pre-requisite for this exporter,
nuclear@0 96 // but nonetheless we have to expect per-vertex normals.
nuclear@0 97 aiVector3D nor;
nuclear@0 98 if (m->mNormals) {
nuclear@0 99 for(unsigned int a = 0; a < f.mNumIndices; ++a) {
nuclear@0 100 nor += m->mNormals[f.mIndices[a]];
nuclear@0 101 }
nuclear@0 102 nor.Normalize();
nuclear@0 103 }
nuclear@0 104 mOutput << " facet normal " << nor.x << " " << nor.y << " " << nor.z << endl;
nuclear@0 105 mOutput << " outer loop" << endl;
nuclear@0 106 for(unsigned int a = 0; a < f.mNumIndices; ++a) {
nuclear@0 107 const aiVector3D& v = m->mVertices[f.mIndices[a]];
nuclear@0 108 mOutput << " vertex " << v.x << " " << v.y << " " << v.z << endl;
nuclear@0 109 }
nuclear@0 110
nuclear@0 111 mOutput << " endloop" << endl;
nuclear@0 112 mOutput << " endfacet" << endl << endl;
nuclear@0 113 }
nuclear@0 114 }
nuclear@0 115
nuclear@0 116 #endif