nuclear@0: /*
nuclear@0: Open Asset Import Library (assimp)
nuclear@0: ----------------------------------------------------------------------
nuclear@0: 
nuclear@0: Copyright (c) 2006-2012, assimp team
nuclear@0: All rights reserved.
nuclear@0: 
nuclear@0: Redistribution and use of this software in source and binary forms, 
nuclear@0: with or without modification, are permitted provided that the 
nuclear@0: following conditions are met:
nuclear@0: 
nuclear@0: * Redistributions of source code must retain the above
nuclear@0:   copyright notice, this list of conditions and the
nuclear@0:   following disclaimer.
nuclear@0: 
nuclear@0: * Redistributions in binary form must reproduce the above
nuclear@0:   copyright notice, this list of conditions and the
nuclear@0:   following disclaimer in the documentation and/or other
nuclear@0:   materials provided with the distribution.
nuclear@0: 
nuclear@0: * Neither the name of the assimp team, nor the names of its
nuclear@0:   contributors may be used to endorse or promote products
nuclear@0:   derived from this software without specific prior
nuclear@0:   written permission of the assimp team.
nuclear@0: 
nuclear@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
nuclear@0: "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
nuclear@0: LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0: A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
nuclear@0: OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0: SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
nuclear@0: LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
nuclear@0: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
nuclear@0: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
nuclear@0: OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0: 
nuclear@0: ----------------------------------------------------------------------
nuclear@0: */
nuclear@0: 
nuclear@0: #include "AssimpPCH.h"
nuclear@0: 
nuclear@0: #if !defined(ASSIMP_BUILD_NO_EXPORT) && !defined(ASSIMP_BUILD_NO_STL_EXPORTER)
nuclear@0: 
nuclear@0: #include "STLExporter.h"
nuclear@0: #include "assimp/version.h"
nuclear@0: 
nuclear@0: using namespace Assimp;
nuclear@0: namespace Assimp	{
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: // Worker function for exporting a scene to Stereolithograpy. Prototyped and registered in Exporter.cpp
nuclear@0: void ExportSceneSTL(const char* pFile,IOSystem* pIOSystem, const aiScene* pScene)
nuclear@0: {
nuclear@0: 	// invoke the exporter 
nuclear@0: 	STLExporter exporter(pFile, pScene);
nuclear@0: 
nuclear@0: 	// we're still here - export successfully completed. Write the file.
nuclear@0: 	boost::scoped_ptr<IOStream> outfile (pIOSystem->Open(pFile,"wt"));
nuclear@0: 	if(outfile == NULL) {
nuclear@0: 		throw DeadlyExportError("could not open output .stl file: " + std::string(pFile));
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	outfile->Write( exporter.mOutput.str().c_str(), static_cast<size_t>(exporter.mOutput.tellp()),1);
nuclear@0: }
nuclear@0: 
nuclear@0: } // end of namespace Assimp
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: STLExporter :: STLExporter(const char* _filename, const aiScene* pScene)
nuclear@0: : filename(_filename)
nuclear@0: , pScene(pScene)
nuclear@0: , endl("\n") 
nuclear@0: {
nuclear@0: 	// make sure that all formatting happens using the standard, C locale and not the user's current locale
nuclear@0: 	const std::locale& l = std::locale("C");
nuclear@0: 	mOutput.imbue(l);
nuclear@0: 
nuclear@0: 	const std::string& name = "AssimpScene";
nuclear@0: 	
nuclear@0: 	mOutput << "solid " << name << endl;
nuclear@0: 	for(unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
nuclear@0: 		WriteMesh(pScene->mMeshes[i]);
nuclear@0: 	}
nuclear@0: 	mOutput << "endsolid " << name << endl;
nuclear@0: }
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void STLExporter :: WriteMesh(const aiMesh* m)
nuclear@0: {
nuclear@0: 	for (unsigned int i = 0; i < m->mNumFaces; ++i) {
nuclear@0: 		const aiFace& f = m->mFaces[i];
nuclear@0: 
nuclear@0: 		// we need per-face normals. We specified aiProcess_GenNormals as pre-requisite for this exporter,
nuclear@0: 		// but nonetheless we have to expect per-vertex normals.
nuclear@0: 		aiVector3D nor;
nuclear@0: 		if (m->mNormals) {
nuclear@0: 			for(unsigned int a = 0; a < f.mNumIndices; ++a) {
nuclear@0: 				nor += m->mNormals[f.mIndices[a]];
nuclear@0: 			}
nuclear@0: 			nor.Normalize();
nuclear@0: 		}
nuclear@0: 		mOutput << " facet normal " << nor.x << " " << nor.y << " " << nor.z << endl;
nuclear@0: 		mOutput << "  outer loop" << endl; 
nuclear@0: 		for(unsigned int a = 0; a < f.mNumIndices; ++a) {
nuclear@0: 			const aiVector3D& v  = m->mVertices[f.mIndices[a]];
nuclear@0: 			mOutput << "  vertex " << v.x << " " << v.y << " " << v.z << endl;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		mOutput << "  endloop" << endl; 
nuclear@0: 		mOutput << " endfacet" << endl << endl; 
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: #endif