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#include <BRepGProp.hxx>
#include <BRepGProp_Cinert.hxx>
#include <BRepGProp_Sinert.hxx>
#include <BRepGProp_Vinert.hxx>
#include <BRepGProp_VinertGK.hxx>
#include <BRepGProp_Face.hxx>
#include <BRepGProp_Domain.hxx>
#include <TopoDS.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <TopTools.hxx>
#include <BRep_Tool.hxx>
#include <TopTools_ListOfShape.hxx>
#include <BRepCheck_Shell.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#ifdef DEB
static Standard_Integer AffichEps = 0;
#endif
static gp_Pnt roughBaryCenter(const TopoDS_Shape& S){
Standard_Integer i; TopExp_Explorer ex;
gp_XYZ xyz(0,0,0);
for (ex.Init(S,TopAbs_VERTEX), i = 0; ex.More(); ex.Next(), i++)
xyz += BRep_Tool::Pnt(TopoDS::Vertex(ex.Current())).XYZ();
if ( i > 0 ) xyz /= i;
return gp_Pnt(xyz);
}
void BRepGProp::LinearProperties(const TopoDS_Shape& S, GProp_GProps& SProps){
// find the origin
gp_Pnt P(0,0,0);
P.Transform(S.Location());
SProps = GProp_GProps(P);
BRepAdaptor_Curve BAC;
// Standard_Integer n,i;
TopExp_Explorer ex;
for (ex.Init(S,TopAbs_EDGE); ex.More(); ex.Next()) {
BAC.Initialize(TopoDS::Edge(ex.Current()));
BRepGProp_Cinert CG(BAC,P);
SProps.Add(CG);
}
}
static Standard_Real surfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
Standard_Integer i, iErrorMax = 0;
Standard_Real ErrorMax = 0.0, Error;
TopExp_Explorer ex;
gp_Pnt P(roughBaryCenter(S));
BRepGProp_Sinert G; G.SetLocation(P);
BRepGProp_Face BF;
BRepGProp_Domain BD;
for (ex.Init(S,TopAbs_FACE), i = 1; ex.More(); ex.Next(), i++) {
const TopoDS_Face& F = TopoDS::Face(ex.Current());
BF.Load(F);
if(!BF.NaturalRestriction()) BD.Init(F);
if(Eps < 1.0) {
G.Perform(BF, BD, Eps);
Error = G.GetEpsilon();
if(ErrorMax < Error){ ErrorMax = Error; iErrorMax = i;}
} else {
if(BF.NaturalRestriction()) G.Perform(BF);
else G.Perform(BF, BD);
}
Props.Add(G);
#ifdef DEB
if(AffichEps) cout<<"\n"<<i<<":\tEpsArea = "<< G.GetEpsilon();
#endif
}
#ifdef DEB
if(AffichEps) cout<<"\n-----------------\n"<<iErrorMax<<":\tMaxError = "<<ErrorMax<<"\n";
#endif
return ErrorMax;
}
void BRepGProp::SurfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props){
// find the origin
gp_Pnt P(0,0,0);
P.Transform(S.Location());
Props = GProp_GProps(P);
surfaceProperties(S,Props,1.0);
}
Standard_Real BRepGProp::SurfaceProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
// find the origin
gp_Pnt P(0,0,0); P.Transform(S.Location());
Props = GProp_GProps(P);
Standard_Real ErrorMax = surfaceProperties(S,Props,Eps);
return ErrorMax;
}
//=======================================================================
//function : volumeProperties
//purpose :
//=======================================================================
static Standard_Real volumeProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Real Eps){
Standard_Integer i, iErrorMax = 0;
Standard_Real ErrorMax = 0.0, Error = 0.0;
TopExp_Explorer ex;
gp_Pnt P(roughBaryCenter(S));
BRepGProp_Vinert G; G.SetLocation(P);
BRepGProp_Face BF;
BRepGProp_Domain BD;
for (ex.Init(S,TopAbs_FACE), i = 1; ex.More(); ex.Next(), i++) {
const TopoDS_Face& F = TopoDS::Face(ex.Current());
if ((F.Orientation() == TopAbs_FORWARD) || (F.Orientation() == TopAbs_REVERSED)){
BF.Load(F);
if(!BF.NaturalRestriction()) BD.Init(F);
if(Eps < 1.0) {
G.Perform(BF, BD, Eps);
Error = G.GetEpsilon();
if(ErrorMax < Error){ ErrorMax = Error; iErrorMax = i;}
}
else {
if(BF.NaturalRestriction()) G.Perform(BF);
else G.Perform(BF, BD);
}
Props.Add(G);
#ifdef DEB
if(AffichEps) cout<<"\n"<<i<<":\tEpsVolume = "<< G.GetEpsilon();
#endif
}
}
#ifdef DEB
if(AffichEps) cout<<"\n-----------------\n"<<iErrorMax<<":\tMaxError = "<<ErrorMax<<"\n";
#endif
return ErrorMax;
}
void BRepGProp::VolumeProperties(const TopoDS_Shape& S, GProp_GProps& Props, const Standard_Boolean OnlyClosed){
// find the origin
gp_Pnt P(0,0,0); P.Transform(S.Location());
Props = GProp_GProps(P);
if(OnlyClosed){
TopExp_Explorer ex(S,TopAbs_SHELL);
for (; ex.More(); ex.Next()) {
const TopoDS_Shape& Sh = ex.Current();
if(BRep_Tool::IsClosed(Sh)) volumeProperties(Sh,Props,1.0);
}
} else volumeProperties(S,Props,1.0);
}
//=======================================================================
//function : VolumeProperties
//purpose :
//=======================================================================
Standard_Real BRepGProp::VolumeProperties(const TopoDS_Shape& S, GProp_GProps& Props,
const Standard_Real Eps, const Standard_Boolean OnlyClosed)
{
// find the origin
gp_Pnt P(0,0,0); P.Transform(S.Location());
Props = GProp_GProps(P);
Standard_Integer i, iErrorMax = 0;
Standard_Real ErrorMax = 0.0, Error = 0.0;
if(OnlyClosed){
TopExp_Explorer ex(S,TopAbs_SHELL);
for (i = 1; ex.More(); ex.Next(), i++) {
const TopoDS_Shape& Sh = ex.Current();
if(BRep_Tool::IsClosed(Sh)) {
Error = volumeProperties(Sh,Props,Eps);
if(ErrorMax < Error){ ErrorMax = Error; iErrorMax = i;}
}
}
} else ErrorMax = volumeProperties(S,Props,Eps);
#ifdef DEB
if(AffichEps) cout<<"\n\n==================="<<iErrorMax<<":\tMaxEpsVolume = "<<ErrorMax<<"\n";
#endif
return ErrorMax;
}
//===========================================================================================//
// Volume properties by Gauss-Kronrod integration
//===========================================================================================//
//=======================================================================
//function : VolumePropertiesGK
//purpose :
//=======================================================================
static Standard_Real volumePropertiesGK(const TopoDS_Shape &theShape,
GProp_GProps &theProps,
const Standard_Real theTol,
const Standard_Boolean IsUseSpan,
const Standard_Boolean CGFlag,
const Standard_Boolean IFlag)
{
TopExp_Explorer anExp;
anExp.Init(theShape, TopAbs_FACE);
Standard_Real aTol = theTol;
// Compute properties.
gp_Pnt aLoc(roughBaryCenter(theShape));
BRepGProp_VinertGK aVProps;
BRepGProp_Face aPropFace(IsUseSpan);
BRepGProp_Domain aPropDomain;
Standard_Real aLocalError;
Standard_Real anError = 0.;
aVProps.SetLocation(aLoc);
for (; anExp.More(); anExp.Next()) {
TopoDS_Face aFace = TopoDS::Face(anExp.Current());
if (aFace.Orientation() == TopAbs_FORWARD ||
aFace.Orientation() == TopAbs_REVERSED) {
aPropFace.Load(aFace);
if(aPropFace.NaturalRestriction())
aLocalError = aVProps.Perform(aPropFace, aTol, CGFlag, IFlag);
else {
aPropDomain.Init(aFace);
aLocalError = aVProps.Perform(aPropFace, aPropDomain, aTol, CGFlag, IFlag);
}
if (aLocalError < 0.)
return aLocalError;
anError += aLocalError;
theProps.Add(aVProps);
}
}
return anError;
}
//=======================================================================
//function : VolumePropertiesGK
//purpose :
//=======================================================================
Standard_Real BRepGProp::VolumePropertiesGK(const TopoDS_Shape &S,
GProp_GProps &Props,
const Standard_Real Eps,
const Standard_Boolean OnlyClosed,
const Standard_Boolean IsUseSpan,
const Standard_Boolean CGFlag,
const Standard_Boolean IFlag)
{
gp_Pnt P(0,0,0);
Standard_Real anError = 0.;
P.Transform(S.Location());
Props = GProp_GProps(P);
if(OnlyClosed) {
// To select closed shells.
TopExp_Explorer anExp;
TopTools_ListOfShape aClosedShells;
anExp.Init(S, TopAbs_SHELL);
for (; anExp.More(); anExp.Next()) {
const TopoDS_Shape &aShell = anExp.Current();
BRepCheck_Shell aChecker(TopoDS::Shell(aShell));
BRepCheck_Status aStatus = aChecker.Closed(Standard_False);
if(aStatus == BRepCheck_NoError)
aClosedShells.Append(aShell);
}
if (aClosedShells.IsEmpty())
return -1.;
// Compute the properties for each closed shell.
Standard_Real aTol = Eps;
Standard_Real aLocalError;
TopTools_ListIteratorOfListOfShape anIter(aClosedShells);
for (; anIter.More(); anIter.Next()) {
const TopoDS_Shape &aShell = anIter.Value();
aLocalError = volumePropertiesGK(aShell, Props, aTol, IsUseSpan, CGFlag, IFlag);
if (aLocalError < 0)
return aLocalError;
anError += aLocalError;
}
} else
anError = volumePropertiesGK(S, Props, Eps, IsUseSpan, CGFlag, IFlag);
Standard_Real vol = Props.Mass();
if(vol > Epsilon(1.)) anError /= vol;
return anError;
}
//=======================================================================
//function : VolumeProperties
//purpose :
//=======================================================================
static Standard_Real volumePropertiesGK(const TopoDS_Shape &theShape,
GProp_GProps &theProps,
const gp_Pln &thePln,
const Standard_Real theTol,
const Standard_Boolean IsUseSpan,
const Standard_Boolean CGFlag,
const Standard_Boolean IFlag)
{
TopExp_Explorer anExp;
anExp.Init(theShape, TopAbs_FACE);
Standard_Real aTol = theTol;
// Compute properties.
gp_Pnt aLoc(roughBaryCenter(theShape));
BRepGProp_VinertGK aVProps;
BRepGProp_Face aPropFace(IsUseSpan);
BRepGProp_Domain aPropDomain;
Standard_Real aLocalError;
Standard_Real anError = 0.;
aVProps.SetLocation(aLoc);
for (; anExp.More(); anExp.Next()) {
TopoDS_Face aFace = TopoDS::Face(anExp.Current());
if (aFace.Orientation() == TopAbs_FORWARD ||
aFace.Orientation() == TopAbs_REVERSED) {
aPropFace.Load(aFace);
if(aPropFace.NaturalRestriction())
aLocalError = aVProps.Perform(aPropFace, thePln, aTol, CGFlag, IFlag);
else {
aPropDomain.Init(aFace);
aLocalError = aVProps.Perform(aPropFace, aPropDomain, thePln, aTol, CGFlag, IFlag);
}
if (aLocalError < 0.)
return aLocalError;
anError += aLocalError;
theProps.Add(aVProps);
}
}
return anError;
}
//=======================================================================
//function : VolumeProperties
//purpose :
//=======================================================================
Standard_Real BRepGProp::VolumePropertiesGK(const TopoDS_Shape &S,
GProp_GProps &Props,
const gp_Pln &thePln,
const Standard_Real Eps,
const Standard_Boolean OnlyClosed,
const Standard_Boolean IsUseSpan,
const Standard_Boolean CGFlag,
const Standard_Boolean IFlag)
{
gp_Pnt P(0,0,0);
Standard_Real anError = 0.;
P.Transform(S.Location());
Props = GProp_GProps(P);
if(OnlyClosed) {
// To select closed shells.
TopExp_Explorer anExp;
TopTools_ListOfShape aClosedShells;
anExp.Init(S, TopAbs_SHELL);
for (; anExp.More(); anExp.Next()) {
const TopoDS_Shape &aShell = anExp.Current();
BRepCheck_Shell aChecker(TopoDS::Shell(aShell));
BRepCheck_Status aStatus = aChecker.Closed(Standard_False);
if(aStatus == BRepCheck_NoError)
aClosedShells.Append(aShell);
}
if (aClosedShells.IsEmpty())
return -1.;
// Compute the properties for each closed shell.
Standard_Real aTol = Eps;
Standard_Real aLocalError;
TopTools_ListIteratorOfListOfShape anIter(aClosedShells);
for (; anIter.More(); anIter.Next()) {
const TopoDS_Shape &aShell = anIter.Value();
aLocalError = volumePropertiesGK(aShell, Props, thePln, aTol, IsUseSpan, CGFlag, IFlag);
if (aLocalError < 0)
return aLocalError;
anError += aLocalError;
}
} else
anError = volumePropertiesGK(S, Props, thePln, Eps, IsUseSpan, CGFlag, IFlag);
Standard_Real vol = Props.Mass();
if(vol > Epsilon(1.)) anError /= vol;
return anError;
}
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