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// File: TopOpeBRep_FFTransitionTool.cxx
// Created: Thu Oct 27 11:14:38 1994
// Author: Jean Yves LEBEY
// <jyl@bravox>
#include <TopOpeBRepDS_SolidSurfaceInterference.hxx>
#include <TopOpeBRepDS_CurvePointInterference.hxx>
#include <TopOpeBRepDS_SurfaceCurveInterference.hxx>
#include <TopAbs.hxx>
#include <IntSurf_Transition.hxx>
#include <IntSurf_TypeTrans.hxx>
#include <IntSurf_Situation.hxx>
#include <TopOpeBRep_FFTransitionTool.ixx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS.hxx>
#include <BRep_Tool.hxx>
#include <Geom_Surface.hxx>
#include <Geom_Curve.hxx>
#include <GeomAPI_ProjectPointOnCurve.hxx>
#include <gp_Vec.hxx>
#ifdef DEB
Standard_IMPORT Standard_Boolean TopOpeBRepDS_GettraceDSF();
#endif
//-----------------------------------------------------------------------
//function : TransitionToOrientation
//purpose : static
//-----------------------------------------------------------------------
static Standard_Boolean TransitionToOrientation
(const IntSurf_Transition& T,
TopAbs_Orientation& O)
{
Standard_Boolean Odefined = Standard_True;
TopAbs_Orientation result = TopAbs_FORWARD;
IntSurf_TypeTrans trans;
IntSurf_Situation situa;
trans = T.TransitionType();
switch (trans) {
case IntSurf_In : result = TopAbs_FORWARD; break;
case IntSurf_Out : result = TopAbs_REVERSED; break;
case IntSurf_Touch :
situa = T.Situation();
switch (situa) {
case IntSurf_Inside : result = TopAbs_INTERNAL; break;
case IntSurf_Outside : result = TopAbs_EXTERNAL; break;
case IntSurf_Unknown :
Odefined = Standard_False;
#ifdef DEB
// if ( TopOpeBRepDS_GettraceDSF() ) {
// cout<<"TopOpeBRepDS:TransitionToOrientation : unknown situation"<<endl;
// }
#endif
break;
}
break;
case IntSurf_Undecided :
Odefined = Standard_False;
#ifdef DEB
// if ( TopOpeBRepDS_GettraceDSF() ) {
// cout<<"TopOpeBRepDS:TransitionToOrientation : undecided transition"<<endl;
// }
#endif
break;
}
O = result;
return Odefined;
}
//=======================================================================
//function : ProcessLineTransition
//purpose : compute the transition of the intersection
// : point <P> on the intersected shape of index <Index> (1 or 2)
// : for a line crossing an edge
//=======================================================================
TopOpeBRepDS_Transition TopOpeBRep_FFTransitionTool::ProcessLineTransition
(const TopOpeBRep_VPointInter &P,
const Standard_Integer Index,
const TopAbs_Orientation EdgeOrientation)
{
TopOpeBRepDS_Transition TT;
if ((EdgeOrientation==TopAbs_INTERNAL)||(EdgeOrientation==TopAbs_EXTERNAL)) {
TT.Set(EdgeOrientation);
}
else {
TopAbs_Orientation O;
IntSurf_Transition T; {
switch (Index) {
case 1 : T = P.TransitionLineArc1(); break;
case 2 : T = P.TransitionLineArc2(); break;
}
Standard_Boolean Odefined = ::TransitionToOrientation(T,O);
if (Odefined) {
if (EdgeOrientation == TopAbs_REVERSED) O = TopAbs::Complement(O);
TT.Set(O);
}
else {
TT.Set(TopAbs_UNKNOWN,TopAbs_UNKNOWN);
}
}
}
return TT;
}
//=======================================================================
//function : ProcessLineTransition
//purpose : compute the transition of point P on line L, P lying on
// neither of the intersecting shapes
//=======================================================================
TopOpeBRepDS_Transition TopOpeBRep_FFTransitionTool::ProcessLineTransition
(const TopOpeBRep_VPointInter &P, const TopOpeBRep_LineInter& LI)
{
TopOpeBRepDS_Transition TT;
TopAbs_Orientation result;
// P.IsOnDomS1() and P.IsOnDomS2() are both false
Standard_Integer nbv = LI.NbVPoint();
TopOpeBRep_VPointInter P1 = LI.VPoint(1);
Standard_Real par1 = P1.ParameterOnLine();
TopOpeBRep_VPointInter Pn = LI.VPoint(nbv);
Standard_Real parn = Pn.ParameterOnLine();
Standard_Real par = P.ParameterOnLine();
if ( par == par1 ) result = TopAbs_FORWARD;
else if ( par == parn ) result = TopAbs_REVERSED;
else result = TopAbs_INTERNAL;
TT.Set(result);
return TT;
}
//=======================================================================
//function : ProcessEdgeTransition
//purpose : compute the transition from the transition of the intersection
// : point <P> on the intersected shape of index <Index> (1 or 2)
// : for an edge on a line on a Face
//=======================================================================
TopOpeBRepDS_Transition TopOpeBRep_FFTransitionTool::ProcessEdgeTransition
(const TopOpeBRep_VPointInter &P,
const Standard_Integer Index,
const TopAbs_Orientation FaceTransition)
{
TopOpeBRepDS_Transition TT;
if ((FaceTransition == TopAbs_INTERNAL) ||
(FaceTransition == TopAbs_EXTERNAL)) {
TT.Set(FaceTransition);
}
else {
IntSurf_Transition T;
if ( Index == 1 ) T = P.TransitionOnS1();
else if ( Index == 2 ) T = P.TransitionOnS2();
TopAbs_Orientation O;
Standard_Boolean defined = ::TransitionToOrientation(T,O);
if (defined) {
if (FaceTransition == TopAbs_REVERSED) O = TopAbs::Complement(O);
TT.Set(O);
}
else {
TT.Set(TopAbs_UNKNOWN,TopAbs_UNKNOWN);
}
}
return TT;
}
//=======================================================================
//function : ProcessFaceTransition
//purpose : compute the transition from a Line
//=======================================================================
TopOpeBRepDS_Transition TopOpeBRep_FFTransitionTool::ProcessFaceTransition
(const TopOpeBRep_LineInter& L,
const Standard_Integer Index,
const TopAbs_Orientation FaceOrientation)
{
// If Index == 1, on first shape
// If Index == 2, on second shape
TopOpeBRepDS_Transition TT;
if ((FaceOrientation == TopAbs_INTERNAL) ||
(FaceOrientation == TopAbs_EXTERNAL)) {
TT.Set(FaceOrientation);
}
else {
Standard_Boolean Odefined = Standard_True;
#ifdef DEB
TopAbs_Orientation O;
#else
TopAbs_Orientation O = TopAbs_FORWARD;
#endif
IntSurf_TypeTrans trans;
trans = (Index == 1) ? L.TransitionOnS1() : L.TransitionOnS2();
switch (trans) {
case IntSurf_In : O = TopAbs_FORWARD; break;
case IntSurf_Out : O = TopAbs_REVERSED; break;
case IntSurf_Touch : {
IntSurf_Situation situa;
situa = (Index == 1 ) ? L.SituationS1() : L.SituationS2();
switch (situa) {
case IntSurf_Inside : O = TopAbs_INTERNAL; break;
case IntSurf_Outside : O = TopAbs_EXTERNAL; break;
case IntSurf_Unknown :
Odefined = Standard_False;
#ifdef DEB
if ( TopOpeBRepDS_GettraceDSF() ) {
cout<<"ProcessFaceTransition : unknown situation"<<endl;
}
#endif
break;
}
break;
} // case Touch
case IntSurf_Undecided :
Odefined = Standard_False;
#ifdef DEB
if ( TopOpeBRepDS_GettraceDSF() ) {
cout<<"ProcessFaceTransition : undecided transition"<<endl;
}
#endif
break;
} // trans
if (Odefined) {
if (FaceOrientation == TopAbs_REVERSED) O = TopAbs::Complement(O);
TT.Set(O);
}
else {
TT.Set(TopAbs_UNKNOWN,TopAbs_UNKNOWN);
}
}
return TT;
}
// -------------------------------------------------
// input : P1 : point
// input : C2 : courbe, FC2,LC2 : bornes de C2
// output : T2 = parametre de P1 sur C2
// -------------------------------------------------
static Standard_Boolean FUN_ProjectPoint(const gp_Pnt& P1,
const Handle(Geom_Curve)& C2,
const Standard_Real FC2,
const Standard_Real LC2,
Standard_Real& T2)
{
if ( C2.IsNull() ) {
return Standard_False;
}
Standard_Real res = Standard_False;
GeomAPI_ProjectPointOnCurve mydist(P1,C2,FC2,LC2);
if ( mydist.Extrema().IsDone() ) {
if ( mydist.NbPoints() ) {
T2 = mydist.LowerDistanceParameter();
res = Standard_True;
}
}
//#ifdef DEB
// return res; // BUG ???
//#else
return (Standard_Boolean ) res ;
//#endif
}
// -------------------------------------------------
// input : S1,U1,V1,C1,T1 avec D0(S1(U1,V1)) = D0(C1(T1))
// input : C2,FC2,LC2 : courbe, bornes de C2
// output : Trans : transition sur C1 en T1 en croisant C2
// -------------------------------------------------
static Standard_Boolean FUN_GeomTrans(const Handle(Geom_Surface)& S1,
const Standard_Real U1,
const Standard_Real V1,
const Handle(Geom_Curve)& C1,
const Standard_Real T1,
const Handle(Geom_Curve)& C2,
const Standard_Real FC2,
const Standard_Real LC2,
TopOpeBRepDS_Transition& Trans)
{
if ( C1.IsNull() || C2.IsNull() ) {
return Standard_False;
}
// P1 : D0(C1(T1), D1_C1 : D1(C1(T1))
gp_Pnt P1; gp_Vec D1_C1; C1->D1(T1,P1,D1_C1);
// D1_C2 : D1(C2(P1))
Standard_Real T2 = 0;
Standard_Boolean projok = ::FUN_ProjectPoint(P1,C2,FC2,LC2,T2);
if ( !projok ) {
return Standard_False;
}
gp_Pnt P2; gp_Vec D1_C2; C2->D1(T2,P2,D1_C2);
// N1 : D1(S1(U1,V1))
gp_Vec N1,D1U,D1V;
gp_Pnt PS;
S1->D1(U1,V1,PS,D1U,D1V);
D1U.Normalize();
D1V.Normalize();
N1 = D1U.Crossed(D1V);
N1.Normalize();
gp_Vec N1D1_C1 = N1.Crossed(D1_C1);
Standard_Real dot = N1D1_C1.Dot(D1_C2);
if ( dot > 0 ) {
Trans.Before(TopAbs_OUT);
Trans.After(TopAbs_IN);
}
else {
Trans.Before(TopAbs_IN);
Trans.After(TopAbs_OUT);
}
return Standard_True;
}
//=======================================================================
//function : ProcessEdgeONTransition
//purpose :
//=======================================================================
TopOpeBRepDS_Transition TopOpeBRep_FFTransitionTool::ProcessEdgeONTransition
(const TopOpeBRep_VPointInter& VP,
const Standard_Integer ShapeIndex,
const TopoDS_Shape& RR,
const TopoDS_Shape& EE,
const TopoDS_Shape& FF)
{
const TopoDS_Edge& R = TopoDS::Edge(RR);
const TopoDS_Edge& E = TopoDS::Edge(EE);
const TopoDS_Face& F = TopoDS::Face(FF);
TopAbs_Orientation oriE = E.Orientation();
const Handle(Geom_Surface)& S = BRep_Tool::Surface(F);
Standard_Real U = 0,V = 0;
if (ShapeIndex == 1) VP.ParametersOnS1(U,V);
else if (ShapeIndex == 2) VP.ParametersOnS2(U,V);
Standard_Real fE,lE;
const Handle(Geom_Curve)& CE = BRep_Tool::Curve(E,fE,lE);
Standard_Real TE = VP.EdgeParameter(ShapeIndex);
Standard_Real fR,lR;
const Handle(Geom_Curve)& CR = BRep_Tool::Curve(R,fR,lR);
TopOpeBRepDS_Transition Trans;
Standard_Boolean transok = ::FUN_GeomTrans(S,U,V,CE,TE,CR,fR,lR,Trans);
if ( transok ) {
// Trans : transition sur R en croisant l'arete E orientee dans la face F
if (oriE == TopAbs_REVERSED) Trans = Trans.Complement();
}
return Trans;
}
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