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// File: DBRep_IsoBuilder.cxx
// Created: Fri Mar 25 16:44:21 1994
// Author: Jean Marc LACHAUME
// <jml@phobox>
#include <DBRep_IsoBuilder.ixx>
#include <Precision.hxx>
#include <BRepTools.hxx>
#include <BRep_Tool.hxx>
#include <Geom2dAdaptor_Curve.hxx>
#include <Geom2dHatch_Intersector.hxx>
#include <Geom2d_Curve.hxx>
#include <Geom2d_Line.hxx>
#include <Geom2d_TrimmedCurve.hxx>
#include <HatchGen_Domain.hxx>
#include <Precision.hxx>
#include <TopAbs_ShapeEnum.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Pnt2d.hxx>
// Modified by Sergey KHROMOV - Thu Nov 9 12:08:37 2000
static Standard_Real IntersectorConfusion = 1.e-10 ; // -8 ;
static Standard_Real IntersectorTangency = 1.e-10 ; // -8 ;
// Modified by Sergey KHROMOV - Thu Nov 9 12:08:38 2000
static Standard_Real HatcherConfusion2d = 1.e-8 ;
static Standard_Real HatcherConfusion3d = 1.e-8 ;
//=======================================================================
// Function : DBRep_IsoBuilder
// Purpose : Constructeur.
//=======================================================================
DBRep_IsoBuilder::DBRep_IsoBuilder (const TopoDS_Face& TopologicalFace,
const Standard_Real Infinite,
const Standard_Integer NbIsos) :
Geom2dHatch_Hatcher (Geom2dHatch_Intersector (IntersectorConfusion,
IntersectorTangency),
HatcherConfusion2d,
HatcherConfusion3d,
Standard_True,
Standard_False) ,
myInfinite (Infinite) ,
myUMin (0.0) ,
myUMax (0.0) ,
myVMin (0.0) ,
myVMax (0.0) ,
myUPrm (1, NbIsos) ,
myUInd (1, NbIsos) ,
myVPrm (1, NbIsos) ,
myVInd (1, NbIsos) ,
myNbDom (0)
{
myUInd.Init(0);
myVInd.Init(0);
//-----------------------------------------------------------------------
// If the Min Max bounds are infinite, there are bounded to Infinite
// value.
//-----------------------------------------------------------------------
BRepTools::UVBounds (TopologicalFace, myUMin, myUMax, myVMin, myVMax) ;
Standard_Boolean InfiniteUMin = Precision::IsNegativeInfinite (myUMin) ;
Standard_Boolean InfiniteUMax = Precision::IsPositiveInfinite (myUMax) ;
Standard_Boolean InfiniteVMin = Precision::IsNegativeInfinite (myVMin) ;
Standard_Boolean InfiniteVMax = Precision::IsPositiveInfinite (myVMax) ;
if (InfiniteUMin && InfiniteUMax) {
myUMin = - Infinite ;
myUMax = Infinite ;
} else if (InfiniteUMin) {
myUMin = myUMax - Infinite ;
} else if (InfiniteUMax) {
myUMax = myUMin + Infinite ;
}
if (InfiniteVMin && InfiniteVMax) {
myVMin = - Infinite ;
myVMax = Infinite ;
} else if (InfiniteVMin) {
myVMin = myVMax - Infinite ;
} else if (InfiniteVMax) {
myVMax = myVMin + Infinite ;
}
//-----------------------------------------------------------------------
// Retreiving the edges and loading them into the hatcher.
//-----------------------------------------------------------------------
TopExp_Explorer ExpEdges ;
for (ExpEdges.Init (TopologicalFace, TopAbs_EDGE) ; ExpEdges.More() ; ExpEdges.Next()) {
const TopoDS_Edge& TopologicalEdge = TopoDS::Edge (ExpEdges.Current()) ;
Standard_Real U1, U2 ;
const Handle(Geom2d_Curve) PCurve = BRep_Tool::CurveOnSurface (TopologicalEdge, TopologicalFace, U1, U2) ;
if ( PCurve.IsNull() ) {
#ifdef DEB
cout<<"DBRep_IsoBuilder : PCurve nulle"<<endl;
#endif
return;
}
if ( U1==U2) {
#ifdef DEB
cout<<"DBRep_IsoBuilder PCurve : U1==U2"<<endl;
#endif
return;
}
//-- Test if a TrimmedCurve is necessary
if( Abs(PCurve->FirstParameter()-U1)<= Precision::PConfusion()
&& Abs(PCurve->LastParameter()-U2)<= Precision::PConfusion()) {
AddElement (PCurve, TopologicalEdge.Orientation());
}
else {
if (!PCurve->IsPeriodic()) {
Handle (Geom2d_TrimmedCurve) TrimPCurve =Handle(Geom2d_TrimmedCurve)::DownCast(PCurve);
if (!TrimPCurve.IsNull()) {
if (TrimPCurve->BasisCurve()->FirstParameter()-U1 > Precision::PConfusion() ||
U2-TrimPCurve->BasisCurve()->LastParameter() > Precision::PConfusion()) {
AddElement (PCurve, TopologicalEdge.Orientation()) ;
#ifdef DEB
cout<<"DBRep_IsoBuilder TrimPCurve : parameters out of range "<<endl;
cout<<" U1("<<U1<<"), Umin("<<PCurve->FirstParameter()
<<"), U2("<<U2<<"), Umax("<<PCurve->LastParameter()<<")"<<endl;
#endif
return;
}
}
else {
if (PCurve->FirstParameter()-U1 > Precision::PConfusion()){
#ifdef DEB
cout<<"DBRep_IsoBuilder PCurve : U1 parameters out of range "<<endl;
cout<<" U1("<<U1<<"), Umin("<<PCurve->FirstParameter()<<")"<<endl;
#endif
U1=PCurve->FirstParameter();
}
if (U2-PCurve->LastParameter() > Precision::PConfusion()){
#ifdef DEB
cout<<"DBRep_IsoBuilder PCurve : U2 parameters out of range "<<endl;
cout<<" U2("<<U2<<"), Umax("<<PCurve->LastParameter()<<")"<<endl;
#endif
U2=PCurve->LastParameter();
}
}
}
//if U1 and U2 coincide-->do nothing
if (Abs(U1-U2) <= Precision::PConfusion()) continue;
Handle (Geom2d_TrimmedCurve) TrimPCurve = new Geom2d_TrimmedCurve (PCurve, U1, U2) ;
AddElement (TrimPCurve, TopologicalEdge.Orientation()) ;
}
}
//-----------------------------------------------------------------------
// Loading and trimming the hatchings.
//-----------------------------------------------------------------------
Standard_Integer IIso ;
Standard_Real DeltaU = Abs (myUMax - myUMin) ;
Standard_Real DeltaV = Abs (myVMax - myVMin) ;
Standard_Real confusion = Min (DeltaU, DeltaV) * HatcherConfusion3d ;
Confusion3d (confusion) ;
Standard_Real StepU = DeltaU / (Standard_Real) NbIsos ;
if (StepU > confusion) {
Standard_Real UPrm = myUMin + StepU / 2. ;
gp_Dir2d Dir (0., 1.) ;
for (IIso = 1 ; IIso <= NbIsos ; IIso++) {
myUPrm(IIso) = UPrm ;
gp_Pnt2d Ori (UPrm, 0.) ;
Geom2dAdaptor_Curve HCur (new Geom2d_Line (Ori, Dir)) ;
myUInd(IIso) = AddHatching (HCur) ;
UPrm += StepU ;
}
}
Standard_Real StepV = DeltaV / (Standard_Real) NbIsos ;
if (StepV > confusion) {
Standard_Real VPrm = myVMin + StepV / 2. ;
gp_Dir2d Dir (1., 0.) ;
for (IIso = 1 ; IIso <= NbIsos ; IIso++) {
myVPrm(IIso) = VPrm ;
gp_Pnt2d Ori (0., VPrm) ;
Geom2dAdaptor_Curve HCur (new Geom2d_Line (Ori, Dir)) ;
myVInd(IIso) = AddHatching (HCur) ;
VPrm += StepV ;
}
}
//-----------------------------------------------------------------------
// Computation.
//-----------------------------------------------------------------------
Trim() ;
myNbDom = 0 ;
for (IIso = 1 ; IIso <= NbIsos ; IIso++) {
Standard_Integer Index ;
Index = myUInd(IIso) ;
if (Index != 0) {
if (TrimDone (Index) && !TrimFailed (Index)) {
ComputeDomains (Index);
if (IsDone (Index)) myNbDom = myNbDom + Geom2dHatch_Hatcher::NbDomains (Index) ;
}
}
Index = myVInd(IIso) ;
if (Index != 0) {
if (TrimDone (Index) && !TrimFailed (Index)) {
ComputeDomains (Index);
if (IsDone (Index)) myNbDom = myNbDom + Geom2dHatch_Hatcher::NbDomains (Index) ;
}
}
}
}
//=======================================================================
// Function : LoadIsos
// Purpose : Loading of the isoparametric curves in the Data Structure
// of a drawable face.
//=======================================================================
void DBRep_IsoBuilder::LoadIsos (const Handle(DBRep_Face)& Face) const
{
Standard_Integer NumIso = 0 ;
for (Standard_Integer UIso = myUPrm.Lower() ; UIso <= myUPrm.Upper() ; UIso++) {
Standard_Integer UInd = myUInd.Value (UIso) ;
if (UInd != 0) {
Standard_Real UPrm = myUPrm.Value (UIso) ;
if (!IsDone (UInd)) {
cout << "DBRep_IsoBuilder:: U iso of parameter: " << UPrm ;
switch (Status (UInd)) {
case HatchGen_NoProblem : cout << " No Problem" << endl ; break ;
case HatchGen_TrimFailure : cout << " Trim Failure" << endl ; break ;
case HatchGen_TransitionFailure : cout << " Transition Failure" << endl ; break ;
case HatchGen_IncoherentParity : cout << " Incoherent Parity" << endl ; break ;
case HatchGen_IncompatibleStates : cout << " Incompatible States" << endl ; break ;
}
} else {
Standard_Integer NbDom = Geom2dHatch_Hatcher::NbDomains (UInd) ;
for (Standard_Integer IDom = 1 ; IDom <= NbDom ; IDom++) {
const HatchGen_Domain& Dom = Domain (UInd, IDom) ;
Standard_Real V1 = Dom.HasFirstPoint() ? Dom.FirstPoint().Parameter() : myVMin - myInfinite ;
Standard_Real V2 = Dom.HasSecondPoint() ? Dom.SecondPoint().Parameter() : myVMax + myInfinite ;
NumIso++ ;
Face->Iso (NumIso, GeomAbs_IsoU, UPrm, V1, V2) ;
}
}
}
}
for (Standard_Integer VIso = myVPrm.Lower() ; VIso <= myVPrm.Upper() ; VIso++) {
Standard_Integer VInd = myVInd.Value (VIso) ;
if (VInd != 0) {
Standard_Real VPrm = myVPrm.Value (VIso) ;
if (!IsDone (VInd)) {
cout << "DBRep_IsoBuilder:: V iso of parameter: " << VPrm ;
switch (Status (VInd)) {
case HatchGen_NoProblem : cout << " No Problem" << endl ; break ;
case HatchGen_TrimFailure : cout << " Trim Failure" << endl ; break ;
case HatchGen_TransitionFailure : cout << " Transition Failure" << endl ; break ;
case HatchGen_IncoherentParity : cout << " Incoherent Parity" << endl ; break ;
case HatchGen_IncompatibleStates : cout << " Incompatible States" << endl ; break ;
}
} else {
Standard_Integer NbDom = Geom2dHatch_Hatcher::NbDomains (VInd) ;
for (Standard_Integer IDom = 1 ; IDom <= NbDom ; IDom++) {
const HatchGen_Domain& Dom = Domain (VInd, IDom) ;
Standard_Real U1 = Dom.HasFirstPoint() ? Dom.FirstPoint().Parameter() : myVMin - myInfinite ;
Standard_Real U2 = Dom.HasSecondPoint() ? Dom.SecondPoint().Parameter() : myVMax + myInfinite ;
NumIso++ ;
Face->Iso (NumIso, GeomAbs_IsoV, VPrm, U1, U2) ;
}
}
}
}
}
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