SaraP
122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
/*++
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Copyright (C) 2019 3MF Consortium
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Abstract:
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NMR_MeshExporter_STL.cpp implements the Mesh Exporter Class.
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This is a derived class for Exporting the binary STL and color STL Mesh Format.
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--*/
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#include "Common/MeshExport/NMR_MeshExporter_STL.h"
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#include "Common/MeshImport/NMR_MeshImporter_STL.h"
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#include "Common/Math/NMR_Matrix.h"
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#include "Common/Math/NMR_Vector.h"
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#include "Common/NMR_Exception.h"
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#include <cmath>
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#include <list>
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namespace NMR {
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CMeshExporter_STL::CMeshExporter_STL() : CMeshExporter()
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{
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// empty on purpose
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}
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CMeshExporter_STL::CMeshExporter_STL(PExportStream pStream) : CMeshExporter(pStream)
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{
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// empty on purpose
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}
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void CMeshExporter_STL::exportMeshEx(_In_ CMesh * pMesh, _In_opt_ NMATRIX3 * pmMatrix, _In_opt_ CMeshExportEdgeMap * pExportEdgeMap)
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{
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if (!pMesh)
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throw CNMRException(NMR_ERROR_INVALIDPARAM);
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CExportStream * pStream = getStream();
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if (!pStream)
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throw CNMRException(NMR_ERROR_NOEXPORTSTREAM);
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nfUint32 nIdx, j;
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nfUint32 nFaceCount = pMesh->getFaceCount();
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MESHFACE * face;
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MESHNODE * node;
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MESHFORMAT_STL_FACET facet;
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std::list<MESHFORMAT_STL_FACET> facetdata;
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for (nIdx = 0; nIdx < nFaceCount; nIdx++) {
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face = pMesh->getFace(nIdx);
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for (j = 0; j < 3; j++) {
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node = pMesh->getNode (face->m_nodeindices[j]);
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if (pmMatrix)
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facet.m_vertices[j] = fnMATRIX3_apply(*pmMatrix, node->m_position);
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else
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facet.m_vertices[j] = node->m_position;
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}
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// Calculate Triangle Normals
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facet.m_normal = fnVEC3_calcTriangleNormal(facet.m_vertices[0], facet.m_vertices[1], facet.m_vertices[2]);
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facet.m_attribute = 0;
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facetdata.push_back(facet);
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}
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nfByte stlheader[80];
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char HeaderMessage[34] = "STL Export by Lib3MF";
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nfUint32 nFacetCount = (nfUint32) facetdata.size();
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// Fill Header
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for (nIdx = 0; nIdx < 33; nIdx++)
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stlheader[nIdx] = (nfByte)HeaderMessage[nIdx];
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for (nIdx = 33; nIdx < 80; nIdx++)
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stlheader[nIdx] = 32;
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// Write Header
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pStream->writeBuffer(&stlheader[0], 80);
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if (isBigEndian())
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nFacetCount = swapBytes(nFacetCount);
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pStream->writeBuffer(&nFacetCount, sizeof (nFacetCount));
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std::list<MESHFORMAT_STL_FACET>::iterator iter;
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if (isBigEndian()) {
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MESHFORMAT_STL_FACET tmpFacet;
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for (iter = facetdata.begin(); iter != facetdata.end(); iter++) {
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tmpFacet = *iter;
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tmpFacet.swapByteOrder();
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pStream->writeBuffer(&tmpFacet, sizeof(MESHFORMAT_STL_FACET));
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}
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}
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else {
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for (iter = facetdata.begin(); iter != facetdata.end(); iter++) {
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pStream->writeBuffer(&(*iter), sizeof(MESHFORMAT_STL_FACET));
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}
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}
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}
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}
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