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// File: LocOpe.cxx
// Created: Tue Apr 2 10:44:51 1996
// Author: Jacques GOUSSARD
// <jag@bravox>
#include <LocOpe.ixx>
#include <TopExp_Explorer.hxx>
#include <BRep_Tool.hxx>
#include <BRep_Builder.hxx>
#include <Geom2d_Curve.hxx>
#include <gp_Pnt2d.hxx>
#include <BRepAdaptor_Curve2d.hxx>
#include <BRepAdaptor_HSurface.hxx>
#include <BRepAdaptor_HCurve2d.hxx>
#include <Geom2dInt_GInter.hxx>
#include <Geom_Curve.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopExp.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Vertex.hxx>
#include <Precision.hxx>
#define NECHANT 10
//=======================================================================
//function : Closed
//purpose :
//=======================================================================
Standard_Boolean LocOpe::Closed(const TopoDS_Wire& W,
const TopoDS_Face& F)
{
TopoDS_Vertex Vf,Vl;
TopExp::Vertices(W,Vf,Vl);
if (!Vf.IsSame(Vl)) {
return Standard_False;
}
// On recherche l`edge contenant Vf FORWARD
TopExp_Explorer exp,exp2;
for (exp.Init(W.Oriented(TopAbs_FORWARD),TopAbs_EDGE);
exp.More();exp.Next()) {
for (exp2.Init(exp.Current(),TopAbs_VERTEX);exp2.More();exp2.Next()) {
if (exp2.Current().IsSame(Vf) &&
exp2.Current().Orientation() == TopAbs_FORWARD) {
break;
}
}
if (exp2.More()) {
break;
}
}
TopoDS_Edge Ef = TopoDS::Edge(exp.Current());
// On recherche l`edge contenant Vl REVERSED
for (exp.Init(W.Oriented(TopAbs_FORWARD),TopAbs_EDGE);
exp.More();exp.Next()) {
for (exp2.Init(exp.Current(),TopAbs_VERTEX);exp2.More();exp2.Next()) {
if (exp2.Current().IsSame(Vl) &&
exp2.Current().Orientation() == TopAbs_REVERSED) {
break;
}
}
if (exp2.More()) {
break;
}
}
TopoDS_Edge El = TopoDS::Edge(exp.Current());
Standard_Real f,l;
gp_Pnt2d pf,pl;
Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(Ef,F,f,l);
if (Ef.Orientation() == TopAbs_FORWARD) {
pf = C2d->Value(f);
}
else {
pf = C2d->Value(l);
}
C2d = BRep_Tool::CurveOnSurface(El,F,f,l);
if (El.Orientation() == TopAbs_FORWARD) {
pl = C2d->Value(l);
}
else {
pl = C2d->Value(f);
}
if (pf.Distance(pl) <= Precision::PConfusion(Precision::Confusion())) {
return Standard_True;
}
return Standard_False;
}
//=======================================================================
//function : Closed
//purpose :
//=======================================================================
Standard_Boolean LocOpe::Closed(const TopoDS_Edge& E,
const TopoDS_Face& F)
{
BRep_Builder B;
TopoDS_Wire W;
B.MakeWire(W);
B.Add(W,E.Oriented(TopAbs_FORWARD));
return LocOpe::Closed(W,F);
}
//=======================================================================
//function : Closed
//purpose :
//=======================================================================
Standard_Boolean LocOpe::TgtFaces(const TopoDS_Edge& E,
const TopoDS_Face& F1,
const TopoDS_Face& F2)
{
BRepAdaptor_Surface bs(F1, Standard_False);
Standard_Real u;
Standard_Real ta = 0.0001;
TopoDS_Edge e = E;
Handle(BRepAdaptor_HSurface) HS1 = new BRepAdaptor_HSurface(F1);
Handle(BRepAdaptor_HSurface) HS2 = new BRepAdaptor_HSurface(F2);
e.Orientation(TopAbs_FORWARD);
Handle(BRepAdaptor_HCurve2d) HC2d = new BRepAdaptor_HCurve2d();
Handle(BRepAdaptor_HCurve2d) HC2d2 = new BRepAdaptor_HCurve2d();
HC2d->ChangeCurve2d().Initialize(e,F1);
HC2d2->ChangeCurve2d().Initialize(e,F2);
// Adaptor3d_CurveOnSurface C1(HC2d,HS1);
Standard_Boolean rev1 = (F1.Orientation() == TopAbs_REVERSED);
Standard_Boolean rev2 = (F2.Orientation() == TopAbs_REVERSED);
Standard_Real f,l,eps,angmin = PI,angmax = -PI,ang;
BRep_Tool::Range(e,f,l);
eps = (l - f)/100.;
f += eps; // pour eviter de faire des calculs sur les
l -= eps; // pointes des carreaux pointus.
gp_Pnt2d p;
gp_Pnt pp1;
gp_Vec du,dv;
gp_Vec d1,d2;
Standard_Real uu, vv;
Standard_Integer i;
for(i = 0; i <= 20; i++){
u = f + (l-f)*i/20;
HC2d->D0(u,p);
HS1->D1(p.X(),p.Y(),pp1,du,dv);
d1 = (du.Crossed(dv)).Normalized();
if(rev1) d1.Reverse();
HC2d2->D0(u,p);
p.Coord(uu,vv);
HS2->D1(uu,vv,pp1,du,dv);
d2 = (du.Crossed(dv)).Normalized();
if(rev2) d2.Reverse();
ang = d1.Angle(d2);
if(ang <= angmin) angmin = ang;
if(ang >= angmax) angmax = ang;
}
return (angmax<=ta);
}
//=======================================================================
//function : SampleEdges
//purpose :
//=======================================================================
void LocOpe::SampleEdges(const TopoDS_Shape& theShape,
TColgp_SequenceOfPnt& theSeq)
{
theSeq.Clear();
TopTools_MapOfShape theMap;
TopExp_Explorer exp(theShape,TopAbs_EDGE);
TopLoc_Location Loc;
Handle(Geom_Curve) C;
Standard_Real f,l,prm;
Standard_Integer i;
// Computes points on edge, but does not take the extremities into account
for (; exp.More(); exp.Next()) {
const TopoDS_Edge& edg = TopoDS::Edge(exp.Current());
if (!theMap.Add(edg)) {
continue;
}
if (!BRep_Tool::Degenerated(edg)) {
C = BRep_Tool::Curve(edg,Loc,f,l);
C = Handle(Geom_Curve)::
DownCast(C->Transformed(Loc.Transformation()));
Standard_Real delta = (l - f)/NECHANT*0.123456;
for (i=1; i<NECHANT; i++) {
prm = delta + ((NECHANT-i)*f+i*l)/NECHANT;
theSeq.Append(C->Value(prm));
}
}
}
// Adds every vertex
for (exp.Init(theShape,TopAbs_VERTEX); exp.More(); exp.Next()) {
if (theMap.Add(exp.Current())) {
theSeq.Append(BRep_Tool::Pnt(TopoDS::Vertex(exp.Current())));
}
}
}
/*
Standard_Boolean LocOpe::IsInside(const TopoDS_Face& F1,
const TopoDS_Face& F2)
{
Standard_Boolean Result = Standard_True;
TopExp_Explorer exp1, exp2;
for(exp1.Init(F1, TopAbs_EDGE); exp1.More(); exp1.Next()) {
TopoDS_Edge e1 = TopoDS::Edge(exp1.Current());
BRepAdaptor_Curve2d C1(e1, F1);
for(exp2.Init(F2, TopAbs_EDGE); exp2.More(); exp2.Next()) {
TopoDS_Edge e2 = TopoDS::Edge(exp2.Current());
BRepAdaptor_Curve2d C2(e2, F2);
Geom2dInt_GInter C;
C.Perform(C1, C2, Precision::Confusion(), Precision::Confusion());
if(!C.IsEmpty()) Result = Standard_False;
if(Result == Standard_False) {
for(exp3.Init(e2, TopAbs_VERTEX); exp3.More(); exp3.Next()) {
}
}
}
if(Result == Standard_False) break;
}
return Result;
}
*/
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