140 lines
5.4 KiB
C++
140 lines
5.4 KiB
C++
/***************************************************************************
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* Copyright (c) 2005 Jürgen Riegel <juergen.riegel@web.de> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <BRep_Tool.hxx>
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# include <BRepMesh_IncrementalMesh.hxx>
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# include <GeomAPI_ProjectPointOnSurf.hxx>
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# include <GeomLProp_SLProps.hxx>
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# include <Poly_Triangulation.hxx>
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# include <TopExp_Explorer.hxx>
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# include <TopoDS.hxx>
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# include <TopoDS_Face.hxx>
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# include <sstream>
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#endif
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#include <Base/Console.h>
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#include <Base/Exception.h>
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#include <Base/Sequencer.h>
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#include <Base/Matrix.h>
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#include <App/ComplexGeoData.h>
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#include <boost/regex.hpp>
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#include "PovTools.h"
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#include "LuxTools.h"
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using Base::Console;
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using namespace Raytracing;
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using namespace std;
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std::string LuxTools::getCamera(const CamDef& Cam)
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{
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std::stringstream out;
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out << "# declares position and view direction" << endl
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<< "# Generated by FreeCAD (http://www.freecadweb.org/)" << endl
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// writing Camera positions
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<< "LookAt " << Cam.CamPos.X() << " " << Cam.CamPos.Y() << " " << Cam.CamPos.Z() << " "
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// writing lookat
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<< Cam.LookAt.X() << " " << Cam.LookAt.Y() << " " << Cam.LookAt.Z() << " "
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// writing the Up Vector
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<< Cam.Up.X() << " " << Cam.Up.Y() << " " << Cam.Up.Z() << endl;
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return out.str();
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}
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void LuxTools::writeShape(std::ostream &out, const char *PartName, const TopoDS_Shape& Shape, float fMeshDeviation)
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{
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Base::Console().Log("Meshing with Deviation: %f\n",fMeshDeviation);
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TopExp_Explorer ex;
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BRepMesh_IncrementalMesh MESH(Shape,fMeshDeviation);
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// counting faces and start sequencer
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int l = 1;
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for (ex.Init(Shape, TopAbs_FACE); ex.More(); ex.Next(),l++) {}
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Base::SequencerLauncher seq("Writing file", l);
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// write object
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out << "AttributeBegin # \"" << PartName << "\"" << endl;
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out << "Transform [1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1]" << endl;
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out << "NamedMaterial \"FreeCADMaterial_" << PartName << "\"" << endl;
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out << "Shape \"mesh\"" << endl;
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// gather vertices, normals and face indices
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std::stringstream triindices;
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std::stringstream N;
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std::stringstream P;
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l = 1;
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int vi = 0;
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for (ex.Init(Shape, TopAbs_FACE); ex.More(); ex.Next(),l++) {
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// get the shape and mesh it
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const TopoDS_Face& aFace = TopoDS::Face(ex.Current());
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// this block mesh the face and transfers it in a C array of vertices and face indexes
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Standard_Integer nbNodesInFace,nbTriInFace;
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gp_Vec* vertices=0;
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gp_Vec* vertexnormals=0;
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long* cons=0;
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PovTools::transferToArray(aFace,&vertices,&vertexnormals,&cons,nbNodesInFace,nbTriInFace);
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if (!vertices) break;
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// writing vertices
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for (int i=0; i < nbNodesInFace; i++) {
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P << vertices[i].X() << " " << vertices[i].Y() << " " << vertices[i].Z() << " ";
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}
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// writing per vertex normals
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for (int j=0; j < nbNodesInFace; j++) {
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N << vertexnormals[j].X() << " " << vertexnormals[j].Y() << " " << vertexnormals[j].Z() << " ";
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}
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// writing triangle indices
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for (int k=0; k < nbTriInFace; k++) {
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triindices << cons[3*k]+vi << " " << cons[3*k+2]+vi << " " << cons[3*k+1]+vi << " ";
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}
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vi = vi + nbNodesInFace;
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delete [] vertexnormals;
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delete [] vertices;
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delete [] cons;
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seq.next();
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} // end of face loop
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// write mesh data
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out << " \"integer triindices\" [" << triindices.str() << "]" << endl;
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out << " \"point P\" [" << P.str() << "]" << endl;
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out << " \"normal N\" [" << N.str() << "]" << endl;
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out << " \"bool generatetangents\" [\"false\"]" << endl;
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out << " \"string name\" [\"" << PartName << "\"]" << endl;
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out << "AttributeEnd # \"\"" << endl;
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}
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