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// File: StepToGeom_MakeTrimmedCurve.cxx
// Created: Fri Nov 4 10:30:12 1994
// Author: Frederic MAUPAS
//:n9 abv 16.02.99: PRO10107: check parameters on curve with PConfusion()!
//:o6 abv 18.02.99: r0301_db #63077: application of parameter Factor moved
//:p0 abv 19.02.99: management of 'done' flag improved
//:p3 abv 23.02.99: bm4_id_punch_d.stp #1313: shift of parameters on ellipse with R1 < R2
// abv 09.02.99: S4136: eliminate using BRepAPI::Precision()
#include <StepToGeom_MakeTrimmedCurve.ixx>
#include <gp_Pnt.hxx>
#include <Geom_CartesianPoint.hxx>
#include <Geom_Curve.hxx>
#include <StepGeom_CartesianPoint.hxx>
#include <StepGeom_Line.hxx>
#include <StepGeom_Vector.hxx>
#include <StepGeom_Circle.hxx>
#include <StepGeom_Ellipse.hxx>
#include <StepGeom_Parabola.hxx>
#include <StepGeom_Hyperbola.hxx>
#include <StepGeom_TrimmingSelect.hxx>
#include <StepGeom_HArray1OfTrimmingSelect.hxx>
#include <StepGeom_TrimmedCurve.hxx>
#include <StepToGeom_MakeTrimmedCurve.hxx>
#include <StepToGeom_MakeCartesianPoint.hxx>
#include <StepToGeom_MakeCurve.hxx>
//#include <GeomAPI_ProjectPointOnCurve.hxx>
//#include <BRepAPI.hxx>
#include <ElCLib.hxx>
#include <UnitsMethods.hxx>
#include <Precision.hxx>
#include <ShapeAnalysis_Curve.hxx>
#include <StepGeom_Axis2Placement3d.hxx>
// ----------------------------------------------------------------
// ExtractParameter
// ----------------------------------------------------------------
//:o6 abv 18 Feb 99: parameter Factor added
//:p3 abv 23 Feb 99: parameter Shift added
static Standard_Boolean ExtractParameter
(const Handle(Geom_Curve) & aGeomCurve,
const Handle(StepGeom_HArray1OfTrimmingSelect) & TS,
const Standard_Integer nbSel,
const Standard_Integer MasterRep,
const Standard_Real Factor,
const Standard_Real Shift,
Standard_Real & aParam)
{
Handle(StepGeom_CartesianPoint) aPoint;
Handle(Geom_CartesianPoint) theGeomPnt;
Standard_Integer i;
//:S4136 Standard_Real precBrep = BRepAPI::Precision();
for ( i = 1 ; i <= nbSel ; i++) {
StepGeom_TrimmingSelect theSel = TS->Value(i);
if (MasterRep == 2 && theSel.CaseMember() > 0) {
aParam = Shift + Factor * theSel.ParameterValue();
return Standard_True;
}
else if (MasterRep == 1 && theSel.CaseNumber() > 0) {
aPoint = theSel.CartesianPoint();
StepToGeom_MakeCartesianPoint::Convert(aPoint,theGeomPnt);
gp_Pnt thegpPnt = theGeomPnt->Pnt();
//:S4136: use advanced algorithm
ShapeAnalysis_Curve sac;
gp_Pnt p;
sac.Project ( aGeomCurve, thegpPnt, Precision::Confusion(), p, aParam );
/* //:S4136
//Trim == natural boundary ?
if(aGeomCurve->IsKind(STANDARD_TYPE(Geom_BoundedCurve))) {
Standard_Real frstPar = aGeomCurve->FirstParameter();
Standard_Real lstPar = aGeomCurve->LastParameter();
gp_Pnt frstPnt = aGeomCurve->Value(frstPar);
gp_Pnt lstPnt = aGeomCurve->Value(lstPar);
if(frstPnt.IsEqual(thegpPnt,precBrep)) {
aParam = frstPar;
return Standard_True;
}
if(lstPnt.IsEqual(thegpPnt,precBrep)) {
aParam = lstPar;
return Standard_True;
}
}
// Project Point On Curve
GeomAPI_ProjectPointOnCurve PPOC(thegpPnt, aGeomCurve);
if (PPOC.NbPoints() == 0) {
return Standard_False;
}
aParam = PPOC.LowerDistanceParameter();
*/
return Standard_True;
}
}
// if the MasterRepresentation is unspecified:
// if a ParameterValue exists, it is prefered
for ( i = 1 ; i <= nbSel ; i++) {
StepGeom_TrimmingSelect theSel = TS->Value(i);
if (theSel.CaseMember() > 0) {
aParam = Shift + Factor * theSel.ParameterValue();
return Standard_True;
}
}
// if no ParameterValue exists, it is created from the CartesianPointValue
for ( i = 1 ; i <= nbSel ; i++) {
StepGeom_TrimmingSelect theSel = TS->Value(i);
if (theSel.CaseNumber() > 0) {
aPoint = theSel.CartesianPoint();
StepToGeom_MakeCartesianPoint::Convert(aPoint,theGeomPnt);
gp_Pnt thegpPnt = theGeomPnt->Pnt();
// Project Point On Curve
ShapeAnalysis_Curve sac;
gp_Pnt p;
sac.Project ( aGeomCurve, thegpPnt, Precision::Confusion(), p, aParam );
/*
GeomAPI_ProjectPointOnCurve PPOC(thegpPnt, aGeomCurve);
if (PPOC.NbPoints() == 0) {
return Standard_False;
}
aParam = PPOC.LowerDistanceParameter();
*/
return Standard_True;
}
}
return Standard_False; // I suppose
}
//=============================================================================
// Creation d' une Trimmed Curve de Geom a partir d' une Trimmed Curve de Step
//=============================================================================
Standard_Boolean StepToGeom_MakeTrimmedCurve::Convert (const Handle(StepGeom_TrimmedCurve)& SC, Handle(Geom_TrimmedCurve)& CC)
{
const Handle(StepGeom_Curve) theSTEPCurve = SC->BasisCurve();
Handle(Geom_Curve) theCurve;
if (!StepToGeom_MakeCurve::Convert(theSTEPCurve,theCurve))
return Standard_False;
const Handle(StepGeom_HArray1OfTrimmingSelect)& theTrimSel1 = SC->Trim1();
const Handle(StepGeom_HArray1OfTrimmingSelect)& theTrimSel2 = SC->Trim2();
const Standard_Integer nbSel1 = SC->NbTrim1();
const Standard_Integer nbSel2 = SC->NbTrim2();
Standard_Integer MasterRep;
switch (SC->MasterRepresentation())
{
case StepGeom_tpCartesian: MasterRep = 1; break;
case StepGeom_tpParameter: MasterRep = 2; break;
default: MasterRep = 0;
}
//gka 18.02.04 analysis for case when MasterRep = .Unspecified
//and parameters are specified as CARTESIAN_POINT
Standard_Boolean isPoint = Standard_False;
if(MasterRep == 0 || (MasterRep == 2 && nbSel1 >1 && nbSel2 > 1)) {
Standard_Integer ii;
for(ii = 1; ii <= nbSel1; ii++)
{
if (!(theTrimSel1->Value(ii).CartesianPoint().IsNull()))
{
for(ii = 1; ii <= nbSel2; ii++)
{
if (!(theTrimSel2->Value(ii).CartesianPoint().IsNull()))
{
isPoint = Standard_True;
break;
}
}
break;
}
}
}
//:o6 abv 18 Feb 99: computation of factor moved
Standard_Real fact = 1., shift = 0.;
if (theSTEPCurve->IsKind(STANDARD_TYPE(StepGeom_Line))) {
const Handle(StepGeom_Line) theLine =
Handle(StepGeom_Line)::DownCast(theSTEPCurve);
fact = theLine->Dir()->Magnitude() * UnitsMethods::LengthFactor();
}
else if (theSTEPCurve->IsKind(STANDARD_TYPE(StepGeom_Circle)) ||
theSTEPCurve->IsKind(STANDARD_TYPE(StepGeom_Ellipse))) {
// if (trim1 > 2.1*PI || trim2 > 2.1*PI) fact = PI / 180.;
fact = UnitsMethods::PlaneAngleFactor();
//:p3 abv 23 Feb 99: shift on pi/2 on ellipse with R1 < R2
const Handle(StepGeom_Ellipse) ellipse = Handle(StepGeom_Ellipse)::DownCast(theSTEPCurve);
if ( !ellipse.IsNull() && ellipse->SemiAxis1() - ellipse->SemiAxis2() < 0. )
shift = 0.5 * PI;
// skl 04.02.2002 for OCC133: we can not make TrimmedCurve if
// there is no X-direction in StepGeom_Axis2Placement3d
const Handle(StepGeom_Conic) conic = Handle(StepGeom_Conic)::DownCast(theSTEPCurve);
// CKY 6-FEB-2004 for Airbus-MedialAxis :
// this restriction does not apply for trimming by POINTS
if(!conic.IsNull() && MasterRep != 1) {
const StepGeom_Axis2Placement a2p = conic->Position();
if(a2p.CaseNum(a2p.Value())==2) {
if( !a2p.Axis2Placement3d()->HasRefDirection() ) {
////gka 18.02.04 analysis for case when MasterRep = .Unspecified
//and parameters are specified as CARTESIAN_POINT
if(isPoint /*&& !MasterRep*/)
MasterRep =1;
else {
if ( SC->SenseAgreement() )
CC = new Geom_TrimmedCurve(theCurve, 0., 2.*PI, Standard_True);
else
CC = new Geom_TrimmedCurve(theCurve, 2.*PI, 0., Standard_False);
return Standard_True;
}
}
}
}
}
Standard_Real trim1 = 0.;
Standard_Real trim2 = 0.;
Handle(StepGeom_CartesianPoint) TrimCP1, TrimCP2;
const Standard_Boolean FoundParam1 = ExtractParameter(theCurve, theTrimSel1, nbSel1, MasterRep, fact, shift, trim1);
const Standard_Boolean FoundParam2 = ExtractParameter(theCurve, theTrimSel2, nbSel2, MasterRep, fact, shift, trim2);
if (FoundParam1 && FoundParam2) {
const Standard_Real cf = theCurve->FirstParameter();
const Standard_Real cl = theCurve->LastParameter();
//: abv 09.04.99: S4136: bm2_ug_t4-B.stp #70610: protect against OutOfRange
if ( !theCurve->IsPeriodic() ) {
if ( trim1 < cf ) trim1 = cf;
else if ( trim1 > cl ) trim1 = cl;
if ( trim2 < cf ) trim2 = cf;
else if ( trim2 > cl ) trim2 = cl;
}
if (Abs(trim1 - trim2) < Precision::PConfusion()) {
if (theCurve->IsPeriodic()) {
ElCLib::AdjustPeriodic(cf,cl,Precision::PConfusion(),trim1,trim2);
}
else if (theCurve->IsClosed()) {
if (Abs(trim1 - cf) < Precision::PConfusion()) {
trim2 += cl;
}
else {
trim1 -= cl;
}
}
else {
//#ifdef DEBUG
// cout << "Trimming Failed" << endl;
//#endif
return Standard_False;
}
}
// CKY 16-DEC-1997 : USA60035 le texte de Part42 parle de degres
// mais des systemes ecrivent en radians. Exploiter UnitsMethods
//:o6 trim1 = trim1 * fact;
//:o6 trim2 = trim2 * fact;
if ( SC->SenseAgreement() )
CC = new Geom_TrimmedCurve(theCurve, trim1, trim2, Standard_True);
else //:abv 29.09.00 PRO20362: reverse parameters in case of reversed curve
CC = new Geom_TrimmedCurve(theCurve, trim2, trim1, Standard_False);
return Standard_True;
}
return Standard_False;
}
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