1 // Created on: 1998-03-12
2 // Created by: Pierre BARRAS
3 // Copyright (c) 1998-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #include <ShapeUpgrade_SplitCurve2d.ixx>
18 #include <ShapeUpgrade.hxx>
19 #include <Geom2d_BSplineCurve.hxx>
20 #include <TColStd_ListIteratorOfListOfReal.hxx>
21 #include <TColStd_HSequenceOfReal.hxx>
22 #include <TColGeom2d_HArray1OfCurve.hxx>
23 #include <Geom2d_TrimmedCurve.hxx>
24 #include <Geom2d_OffsetCurve.hxx>
25 #include <Standard_ErrorHandler.hxx>
26 #include <Standard_Failure.hxx>
27 #include <ShapeExtend.hxx>
28 #include <Precision.hxx>
29 #include <Geom2d_BezierCurve.hxx>
30 #include <ShapeAnalysis_Curve.hxx>
31 #include <Geom2d_Curve.hxx>
33 //=======================================================================
34 //function : ShapeUpgrade_SplitCurve2d
36 //=======================================================================
38 ShapeUpgrade_SplitCurve2d::ShapeUpgrade_SplitCurve2d()
42 //=======================================================================
45 //=======================================================================
47 void ShapeUpgrade_SplitCurve2d::Init(const Handle(Geom2d_Curve)& C)
49 Init (C, C->FirstParameter(), C->LastParameter());
52 //=======================================================================
55 //=======================================================================
57 void ShapeUpgrade_SplitCurve2d::Init(const Handle(Geom2d_Curve)& C,
58 const Standard_Real First,
59 const Standard_Real Last)
61 // if (ShapeUpgrade::Debug()) cout << "SplitCurve2d::Init"<<endl;
62 Handle(Geom2d_Curve) CopyOfC = Handle(Geom2d_Curve)::DownCast(C->Copy());
65 Standard_Real precision = Precision::PConfusion();
66 Standard_Real firstPar = First;
67 Standard_Real lastPar = Last;
68 Handle (Geom2d_Curve) aCurve = myCurve;
69 if(aCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)))
70 aCurve=Handle(Geom2d_TrimmedCurve)::DownCast(aCurve)->BasisCurve();
71 // 15.11.2002 PTV OCC966
72 if(!ShapeAnalysis_Curve::IsPeriodic(C)) {
73 Standard_Real fP = aCurve->FirstParameter();
74 Standard_Real lP = aCurve->LastParameter();
75 if(Abs(firstPar-fP) < precision)
77 if(Abs(lastPar-lP) < precision)
81 cout <<"Warning: The range of the edge exceeds the curve domain" <<endl;
87 cout <<"Warning: The range of the edge exceeds the curve domain" <<endl;
91 if( (lastPar-firstPar) < precision)
92 lastPar=firstPar+2*precision;
95 ShapeUpgrade_SplitCurve::Init (firstPar, lastPar);
97 // first, we make a copy of C to prevent modification:
98 // if (ShapeUpgrade::Debug()) cout << ". copy of the curve"<<endl;
103 //=======================================================================
106 //=======================================================================
108 void ShapeUpgrade_SplitCurve2d::Build(const Standard_Boolean Segment)
110 // if (ShapeUpgrade::Debug()) cout<<"ShapeUpgrade_SplitCurve2d::Build"<<endl;
111 Standard_Real First = mySplitValues->Value(1);
112 Standard_Real Last = mySplitValues->Value(mySplitValues->Length());
114 if (mySplitValues->Length() > 2)
115 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
116 if (myCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) {
117 Handle(Geom2d_TrimmedCurve) tmp = Handle(Geom2d_TrimmedCurve)::DownCast (myCurve);
118 Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
119 ShapeUpgrade_SplitCurve2d spc;
120 spc.Init(BasCurve,First,Last);
121 spc.SetSplitValues(mySplitValues);
123 myNbCurves = spc.GetCurves()->Length();
125 myResultingCurves=new TColGeom2d_HArray1OfCurve (1,myNbCurves);
126 if (myNbCurves == 1) {
127 Handle(Geom2d_TrimmedCurve) NewTrimCurve =
128 new Geom2d_TrimmedCurve(spc.GetCurves()->Value(1),First,Last);
129 myResultingCurves->SetValue(1,NewTrimCurve);
132 myResultingCurves = spc.GetCurves();
133 myStatus |= spc.myStatus;
136 else if (myCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) {
137 Handle(Geom2d_OffsetCurve) tmp = Handle(Geom2d_OffsetCurve)::DownCast (myCurve);
138 Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
139 Standard_Real Offset = tmp->Offset();
140 ShapeUpgrade_SplitCurve2d spc;
141 spc.Init(BasCurve,First,Last);
142 spc.SetSplitValues(mySplitValues);
144 myNbCurves = spc.GetCurves()->Length();
145 myResultingCurves = new TColGeom2d_HArray1OfCurve (1,myNbCurves);
146 for(Standard_Integer i = 1; i <= myNbCurves; i++) {
147 Handle(Geom2d_OffsetCurve) NewOffsetCurve = new Geom2d_OffsetCurve(spc.GetCurves()->Value(i),Offset);
148 myResultingCurves->SetValue(i,NewOffsetCurve);
150 myStatus |= spc.myStatus;
154 myNbCurves = mySplitValues->Length() -1;
155 myResultingCurves=new TColGeom2d_HArray1OfCurve (1,myNbCurves);
157 Standard_Boolean filled = Standard_True;
158 if ( Abs ( myCurve->FirstParameter() - First ) < Precision::PConfusion() &&
159 Abs ( myCurve->LastParameter() - Last ) < Precision::PConfusion() )
160 myResultingCurves->SetValue(1,myCurve);
162 else if ( ! Segment || (!myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) &&
163 !myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve))) || ! Status ( ShapeExtend_DONE2 ) ) {
164 if(myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) ||
165 myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve) )) {
166 Handle(Geom2d_Curve) theNewCurve = Handle(Geom2d_Curve)::DownCast(myCurve->Copy());
169 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)))
170 Handle(Geom2d_BSplineCurve)::DownCast(theNewCurve)->Segment (First, Last);
171 else if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve)))
172 Handle(Geom2d_BezierCurve)::DownCast(theNewCurve)->Segment (First, Last);
174 catch (Standard_Failure) {
176 cout << "Warning: ShapeUpgrade_Split2dCurve::Build(): Exception in Segment :";
177 Standard_Failure::Caught()->Print(cout); cout << endl;
179 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),First,Last);
181 myResultingCurves->SetValue (1, theNewCurve);
185 Handle(Geom2d_TrimmedCurve) theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),First,Last);
186 myResultingCurves->SetValue (1, theNewCurve);
189 else filled = Standard_False;
190 if ( filled ) return;
194 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve))) {
195 Handle(Geom2d_BSplineCurve) BsCurve = Handle(Geom2d_BSplineCurve)::DownCast(myCurve->Copy());
196 Standard_Integer FirstInd =BsCurve->FirstUKnotIndex(),
197 LastInd = BsCurve->LastUKnotIndex();
198 Standard_Integer j = FirstInd;
199 for(Standard_Integer ii =1 ; ii <= mySplitValues->Length(); ii++) {
200 Standard_Real spval = mySplitValues->Value(ii);
201 for(; j <=LastInd;j++) {
202 if( spval > BsCurve->Knot(j) + Precision::PConfusion()) continue;
203 if( spval < BsCurve->Knot(j) - Precision::PConfusion()) break;
204 mySplitValues->SetValue(ii,BsCurve->Knot(j));
206 if(j == LastInd) break;
210 for (Standard_Integer i = 1; i <= myNbCurves; i++) {
211 // skl : in the next block I change "First","Last" to "Firstt","Lastt"
212 Standard_Real Firstt = mySplitValues->Value(i), Lastt = mySplitValues->Value(i+1);
213 Handle(Geom2d_Curve) theNewCurve;
215 // creates a copy of myCurve before to segment:
216 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) ||
217 myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve))) {
218 theNewCurve = Handle(Geom2d_Curve)::DownCast(myCurve->Copy());
221 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)))
222 Handle(Geom2d_BSplineCurve)::DownCast(theNewCurve)->Segment (Firstt, Lastt);
223 else if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve)))
224 Handle(Geom2d_BezierCurve)::DownCast(theNewCurve)->Segment (Firstt, Lastt);
225 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
227 catch (Standard_Failure) {
229 cout << "Warning: ShapeUpgrade_Split2dCurve::Build(): Exception in Segment :";
230 Standard_Failure::Caught()->Print(cout); cout << endl;
232 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),Firstt,Lastt);
236 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),Firstt,Lastt);
238 myResultingCurves->SetValue (i, theNewCurve);
242 //=======================================================================
243 //function : GetCurves
245 //=======================================================================
247 const Handle(TColGeom2d_HArray1OfCurve)& ShapeUpgrade_SplitCurve2d::GetCurves() const
249 return myResultingCurves;