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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
448 lines
13 KiB
C++
448 lines
13 KiB
C++
// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <BRepGProp.hxx>
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#include <BRepGProp_Cinert.hxx>
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#include <BRepGProp_Sinert.hxx>
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#include <BRepGProp_Vinert.hxx>
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#include <BRepGProp_VinertGK.hxx>
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#include <BRepGProp_Face.hxx>
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#include <BRepGProp_Domain.hxx>
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#include <TopoDS.hxx>
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#include <BRepAdaptor_Curve.hxx>
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#include <TopTools.hxx>
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#include <BRep_Tool.hxx>
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#include <TopTools_ListOfShape.hxx>
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#include <BRepCheck_Shell.hxx>
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#include <TopTools_ListIteratorOfListOfShape.hxx>
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#ifdef DEB
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static Standard_Integer AffichEps = 0;
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#endif
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static gp_Pnt roughBaryCenter(const TopoDS_Shape& S){
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Standard_Integer i; TopExp_Explorer ex;
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gp_XYZ xyz(0,0,0);
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for (ex.Init(S,TopAbs_VERTEX), i = 0; ex.More(); ex.Next(), i++)
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xyz += BRep_Tool::Pnt(TopoDS::Vertex(ex.Current())).XYZ();
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if ( i > 0 ) xyz /= i;
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return gp_Pnt(xyz);
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}
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void BRepGProp::LinearProperties(const TopoDS_Shape& S, GProp_GProps& SProps){
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// find the origin
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gp_Pnt P(0,0,0);
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P.Transform(S.Location());
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SProps = GProp_GProps(P);
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BRepAdaptor_Curve BAC;
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// Standard_Integer n,i;
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TopExp_Explorer ex;
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for (ex.Init(S,TopAbs_EDGE); ex.More(); ex.Next()) {
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BAC.Initialize(TopoDS::Edge(ex.Current()));
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BRepGProp_Cinert CG(BAC,P);
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SProps.Add(CG);
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}
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}
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static Standard_Real surfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
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Standard_Integer i;
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#ifdef DEB
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Standard_Integer iErrorMax = 0;
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#endif
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Standard_Real ErrorMax = 0.0, Error;
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TopExp_Explorer ex;
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gp_Pnt P(roughBaryCenter(S));
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BRepGProp_Sinert G; G.SetLocation(P);
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BRepGProp_Face BF;
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BRepGProp_Domain BD;
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for (ex.Init(S,TopAbs_FACE), i = 1; ex.More(); ex.Next(), i++) {
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const TopoDS_Face& F = TopoDS::Face(ex.Current());
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BF.Load(F);
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if(!BF.NaturalRestriction()) BD.Init(F);
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if(Eps < 1.0) {
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G.Perform(BF, BD, Eps);
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Error = G.GetEpsilon();
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if(ErrorMax < Error) {
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ErrorMax = Error;
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#ifdef DEB
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iErrorMax = i;
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#endif
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}
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} else {
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if(BF.NaturalRestriction()) G.Perform(BF);
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else G.Perform(BF, BD);
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}
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Props.Add(G);
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#ifdef DEB
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if(AffichEps) cout<<"\n"<<i<<":\tEpsArea = "<< G.GetEpsilon();
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#endif
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}
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#ifdef DEB
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if(AffichEps) cout<<"\n-----------------\n"<<iErrorMax<<":\tMaxError = "<<ErrorMax<<"\n";
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#endif
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return ErrorMax;
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}
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void BRepGProp::SurfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props){
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// find the origin
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gp_Pnt P(0,0,0);
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P.Transform(S.Location());
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Props = GProp_GProps(P);
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surfaceProperties(S,Props,1.0);
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}
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Standard_Real BRepGProp::SurfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
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// find the origin
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gp_Pnt P(0,0,0); P.Transform(S.Location());
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Props = GProp_GProps(P);
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Standard_Real ErrorMax = surfaceProperties(S,Props,Eps);
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return ErrorMax;
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}
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//=======================================================================
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//function : volumeProperties
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//purpose :
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//=======================================================================
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static Standard_Real volumeProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
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Standard_Integer i;
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#ifdef DEB
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Standard_Integer iErrorMax = 0;
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#endif
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Standard_Real ErrorMax = 0.0, Error = 0.0;
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TopExp_Explorer ex;
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gp_Pnt P(roughBaryCenter(S));
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BRepGProp_Vinert G; G.SetLocation(P);
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BRepGProp_Face BF;
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BRepGProp_Domain BD;
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for (ex.Init(S,TopAbs_FACE), i = 1; ex.More(); ex.Next(), i++) {
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const TopoDS_Face& F = TopoDS::Face(ex.Current());
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if ((F.Orientation() == TopAbs_FORWARD) || (F.Orientation() == TopAbs_REVERSED)){
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BF.Load(F);
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if(!BF.NaturalRestriction()) BD.Init(F);
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if(Eps < 1.0) {
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G.Perform(BF, BD, Eps);
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Error = G.GetEpsilon();
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if(ErrorMax < Error) {
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ErrorMax = Error;
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#ifdef DEB
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iErrorMax = i;
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#endif
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}
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}
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else {
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if(BF.NaturalRestriction()) G.Perform(BF);
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else G.Perform(BF, BD);
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}
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Props.Add(G);
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#ifdef DEB
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if(AffichEps) cout<<"\n"<<i<<":\tEpsVolume = "<< G.GetEpsilon();
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#endif
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}
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}
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#ifdef DEB
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if(AffichEps) cout<<"\n-----------------\n"<<iErrorMax<<":\tMaxError = "<<ErrorMax<<"\n";
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#endif
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return ErrorMax;
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}
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void BRepGProp::VolumeProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Boolean OnlyClosed){
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// find the origin
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gp_Pnt P(0,0,0); P.Transform(S.Location());
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Props = GProp_GProps(P);
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if(OnlyClosed){
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TopExp_Explorer ex(S,TopAbs_SHELL);
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for (; ex.More(); ex.Next()) {
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const TopoDS_Shape& Sh = ex.Current();
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if(BRep_Tool::IsClosed(Sh)) volumeProperties(Sh,Props,1.0);
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}
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} else volumeProperties(S,Props,1.0);
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}
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//=======================================================================
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//function : VolumeProperties
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//purpose :
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//=======================================================================
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Standard_Real BRepGProp::VolumeProperties(const TopoDS_Shape& S, GProp_GProps& Props,
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const Standard_Real Eps, const Standard_Boolean OnlyClosed)
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{
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// find the origin
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gp_Pnt P(0,0,0); P.Transform(S.Location());
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Props = GProp_GProps(P);
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Standard_Integer i;
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#ifdef DEB
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Standard_Integer iErrorMax = 0;
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#endif
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Standard_Real ErrorMax = 0.0, Error = 0.0;
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if(OnlyClosed){
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TopExp_Explorer ex(S,TopAbs_SHELL);
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for (i = 1; ex.More(); ex.Next(), i++) {
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const TopoDS_Shape& Sh = ex.Current();
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if(BRep_Tool::IsClosed(Sh)) {
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Error = volumeProperties(Sh,Props,Eps);
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if(ErrorMax < Error) {
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ErrorMax = Error;
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#ifdef DEB
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iErrorMax = i;
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#endif
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}
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}
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}
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} else ErrorMax = volumeProperties(S,Props,Eps);
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#ifdef DEB
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if(AffichEps) cout<<"\n\n==================="<<iErrorMax<<":\tMaxEpsVolume = "<<ErrorMax<<"\n";
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#endif
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return ErrorMax;
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}
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//===========================================================================================//
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// Volume properties by Gauss-Kronrod integration
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//===========================================================================================//
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//=======================================================================
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//function : VolumePropertiesGK
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//purpose :
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//=======================================================================
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static Standard_Real volumePropertiesGK(const TopoDS_Shape &theShape,
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GProp_GProps &theProps,
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const Standard_Real theTol,
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const Standard_Boolean IsUseSpan,
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const Standard_Boolean CGFlag,
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const Standard_Boolean IFlag)
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{
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TopExp_Explorer anExp;
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anExp.Init(theShape, TopAbs_FACE);
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Standard_Real aTol = theTol;
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// Compute properties.
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gp_Pnt aLoc(roughBaryCenter(theShape));
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BRepGProp_VinertGK aVProps;
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BRepGProp_Face aPropFace(IsUseSpan);
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BRepGProp_Domain aPropDomain;
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Standard_Real aLocalError;
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Standard_Real anError = 0.;
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aVProps.SetLocation(aLoc);
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for (; anExp.More(); anExp.Next()) {
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TopoDS_Face aFace = TopoDS::Face(anExp.Current());
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if (aFace.Orientation() == TopAbs_FORWARD ||
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aFace.Orientation() == TopAbs_REVERSED) {
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aPropFace.Load(aFace);
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if(aPropFace.NaturalRestriction())
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aLocalError = aVProps.Perform(aPropFace, aTol, CGFlag, IFlag);
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else {
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aPropDomain.Init(aFace);
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aLocalError = aVProps.Perform(aPropFace, aPropDomain, aTol, CGFlag, IFlag);
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}
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if (aLocalError < 0.)
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return aLocalError;
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anError += aLocalError;
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theProps.Add(aVProps);
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}
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}
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return anError;
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}
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//=======================================================================
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//function : VolumePropertiesGK
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//purpose :
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//=======================================================================
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Standard_Real BRepGProp::VolumePropertiesGK(const TopoDS_Shape &S,
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GProp_GProps &Props,
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const Standard_Real Eps,
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const Standard_Boolean OnlyClosed,
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const Standard_Boolean IsUseSpan,
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const Standard_Boolean CGFlag,
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const Standard_Boolean IFlag)
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{
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gp_Pnt P(0,0,0);
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Standard_Real anError = 0.;
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P.Transform(S.Location());
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Props = GProp_GProps(P);
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if(OnlyClosed) {
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// To select closed shells.
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TopExp_Explorer anExp;
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TopTools_ListOfShape aClosedShells;
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anExp.Init(S, TopAbs_SHELL);
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for (; anExp.More(); anExp.Next()) {
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const TopoDS_Shape &aShell = anExp.Current();
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BRepCheck_Shell aChecker(TopoDS::Shell(aShell));
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BRepCheck_Status aStatus = aChecker.Closed(Standard_False);
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if(aStatus == BRepCheck_NoError)
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aClosedShells.Append(aShell);
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}
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if (aClosedShells.IsEmpty())
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return -1.;
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// Compute the properties for each closed shell.
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Standard_Real aTol = Eps;
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Standard_Real aLocalError;
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TopTools_ListIteratorOfListOfShape anIter(aClosedShells);
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for (; anIter.More(); anIter.Next()) {
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const TopoDS_Shape &aShell = anIter.Value();
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aLocalError = volumePropertiesGK(aShell, Props, aTol, IsUseSpan, CGFlag, IFlag);
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if (aLocalError < 0)
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return aLocalError;
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anError += aLocalError;
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}
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} else
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anError = volumePropertiesGK(S, Props, Eps, IsUseSpan, CGFlag, IFlag);
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Standard_Real vol = Props.Mass();
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if(vol > Epsilon(1.)) anError /= vol;
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return anError;
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}
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//=======================================================================
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//function : VolumeProperties
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//purpose :
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//=======================================================================
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static Standard_Real volumePropertiesGK(const TopoDS_Shape &theShape,
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GProp_GProps &theProps,
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const gp_Pln &thePln,
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const Standard_Real theTol,
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const Standard_Boolean IsUseSpan,
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const Standard_Boolean CGFlag,
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const Standard_Boolean IFlag)
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{
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TopExp_Explorer anExp;
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anExp.Init(theShape, TopAbs_FACE);
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Standard_Real aTol = theTol;
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// Compute properties.
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gp_Pnt aLoc(roughBaryCenter(theShape));
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BRepGProp_VinertGK aVProps;
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BRepGProp_Face aPropFace(IsUseSpan);
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BRepGProp_Domain aPropDomain;
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Standard_Real aLocalError;
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Standard_Real anError = 0.;
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aVProps.SetLocation(aLoc);
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for (; anExp.More(); anExp.Next()) {
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TopoDS_Face aFace = TopoDS::Face(anExp.Current());
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if (aFace.Orientation() == TopAbs_FORWARD ||
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aFace.Orientation() == TopAbs_REVERSED) {
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aPropFace.Load(aFace);
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if(aPropFace.NaturalRestriction())
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aLocalError = aVProps.Perform(aPropFace, thePln, aTol, CGFlag, IFlag);
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else {
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aPropDomain.Init(aFace);
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aLocalError = aVProps.Perform(aPropFace, aPropDomain, thePln, aTol, CGFlag, IFlag);
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}
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if (aLocalError < 0.)
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return aLocalError;
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anError += aLocalError;
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theProps.Add(aVProps);
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}
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}
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return anError;
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}
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//=======================================================================
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//function : VolumeProperties
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//purpose :
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//=======================================================================
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Standard_Real BRepGProp::VolumePropertiesGK(const TopoDS_Shape &S,
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GProp_GProps &Props,
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const gp_Pln &thePln,
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const Standard_Real Eps,
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const Standard_Boolean OnlyClosed,
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const Standard_Boolean IsUseSpan,
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const Standard_Boolean CGFlag,
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const Standard_Boolean IFlag)
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{
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gp_Pnt P(0,0,0);
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Standard_Real anError = 0.;
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P.Transform(S.Location());
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Props = GProp_GProps(P);
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if(OnlyClosed) {
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// To select closed shells.
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TopExp_Explorer anExp;
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TopTools_ListOfShape aClosedShells;
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anExp.Init(S, TopAbs_SHELL);
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for (; anExp.More(); anExp.Next()) {
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const TopoDS_Shape &aShell = anExp.Current();
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BRepCheck_Shell aChecker(TopoDS::Shell(aShell));
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BRepCheck_Status aStatus = aChecker.Closed(Standard_False);
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if(aStatus == BRepCheck_NoError)
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aClosedShells.Append(aShell);
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}
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if (aClosedShells.IsEmpty())
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return -1.;
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// Compute the properties for each closed shell.
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Standard_Real aTol = Eps;
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Standard_Real aLocalError;
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TopTools_ListIteratorOfListOfShape anIter(aClosedShells);
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for (; anIter.More(); anIter.Next()) {
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const TopoDS_Shape &aShell = anIter.Value();
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aLocalError = volumePropertiesGK(aShell, Props, thePln, aTol, IsUseSpan, CGFlag, IFlag);
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if (aLocalError < 0)
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return aLocalError;
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anError += aLocalError;
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}
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} else
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anError = volumePropertiesGK(S, Props, thePln, Eps, IsUseSpan, CGFlag, IFlag);
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Standard_Real vol = Props.Mass();
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if(vol > Epsilon(1.)) anError /= vol;
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return anError;
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}
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