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.
18 #include <Geom2d_BezierCurve.hxx>
19 #include <Geom2d_BSplineCurve.hxx>
20 #include <Geom2d_Curve.hxx>
21 #include <Geom2d_OffsetCurve.hxx>
22 #include <Geom2d_TrimmedCurve.hxx>
23 #include <Precision.hxx>
24 #include <ShapeAnalysis_Curve.hxx>
25 #include <ShapeExtend.hxx>
26 #include <ShapeUpgrade.hxx>
27 #include <ShapeUpgrade_SplitCurve2d.hxx>
28 #include <Standard_ErrorHandler.hxx>
29 #include <Standard_Failure.hxx>
30 #include <Standard_Type.hxx>
31 #include <TColGeom2d_HArray1OfCurve.hxx>
32 #include <TColStd_HSequenceOfReal.hxx>
33 #include <TColStd_ListIteratorOfListOfReal.hxx>
35 IMPLEMENT_STANDARD_RTTIEXT(ShapeUpgrade_SplitCurve2d,ShapeUpgrade_SplitCurve)
37 //=======================================================================
38 //function : ShapeUpgrade_SplitCurve2d
40 //=======================================================================
41 ShapeUpgrade_SplitCurve2d::ShapeUpgrade_SplitCurve2d()
45 //=======================================================================
48 //=======================================================================
50 void ShapeUpgrade_SplitCurve2d::Init(const Handle(Geom2d_Curve)& C)
52 Init (C, C->FirstParameter(), C->LastParameter());
55 //=======================================================================
58 //=======================================================================
60 void ShapeUpgrade_SplitCurve2d::Init(const Handle(Geom2d_Curve)& C,
61 const Standard_Real First,
62 const Standard_Real Last)
64 // if (ShapeUpgrade::Debug()) cout << "SplitCurve2d::Init"<<endl;
65 Handle(Geom2d_Curve) CopyOfC = Handle(Geom2d_Curve)::DownCast(C->Copy());
68 Standard_Real precision = Precision::PConfusion();
69 Standard_Real firstPar = First;
70 Standard_Real lastPar = Last;
71 Handle (Geom2d_Curve) aCurve = myCurve;
72 if(aCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)))
73 aCurve=Handle(Geom2d_TrimmedCurve)::DownCast(aCurve)->BasisCurve();
74 // 15.11.2002 PTV OCC966
75 if(!ShapeAnalysis_Curve::IsPeriodic(C)) {
76 Standard_Real fP = aCurve->FirstParameter();
77 Standard_Real lP = aCurve->LastParameter();
78 if(Abs(firstPar-fP) < precision)
80 if(Abs(lastPar-lP) < precision)
84 cout <<"Warning: The range of the edge exceeds the curve domain" <<endl;
90 cout <<"Warning: The range of the edge exceeds the curve domain" <<endl;
94 if( (lastPar-firstPar) < precision)
95 lastPar=firstPar+2*precision;
98 ShapeUpgrade_SplitCurve::Init (firstPar, lastPar);
100 // first, we make a copy of C to prevent modification:
101 // if (ShapeUpgrade::Debug()) cout << ". copy of the curve"<<endl;
106 //=======================================================================
109 //=======================================================================
111 void ShapeUpgrade_SplitCurve2d::Build(const Standard_Boolean Segment)
113 // if (ShapeUpgrade::Debug()) cout<<"ShapeUpgrade_SplitCurve2d::Build"<<endl;
114 Standard_Real First = mySplitValues->Value(1);
115 Standard_Real Last = mySplitValues->Value(mySplitValues->Length());
117 if (mySplitValues->Length() > 2)
118 myStatus = ShapeExtend::EncodeStatus (ShapeExtend_DONE1);
119 if (myCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) {
120 Handle(Geom2d_TrimmedCurve) tmp = Handle(Geom2d_TrimmedCurve)::DownCast (myCurve);
121 Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
122 ShapeUpgrade_SplitCurve2d spc;
123 spc.Init(BasCurve,First,Last);
124 spc.SetSplitValues(mySplitValues);
126 myNbCurves = spc.GetCurves()->Length();
128 myResultingCurves=new TColGeom2d_HArray1OfCurve (1,myNbCurves);
129 if (myNbCurves == 1) {
130 Handle(Geom2d_TrimmedCurve) NewTrimCurve =
131 new Geom2d_TrimmedCurve(spc.GetCurves()->Value(1),First,Last);
132 myResultingCurves->SetValue(1,NewTrimCurve);
135 myResultingCurves = spc.GetCurves();
136 myStatus |= spc.myStatus;
139 else if (myCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) {
140 Handle(Geom2d_OffsetCurve) tmp = Handle(Geom2d_OffsetCurve)::DownCast (myCurve);
141 Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
142 Standard_Real Offset = tmp->Offset();
143 ShapeUpgrade_SplitCurve2d spc;
144 spc.Init(BasCurve,First,Last);
145 spc.SetSplitValues(mySplitValues);
147 myNbCurves = spc.GetCurves()->Length();
148 myResultingCurves = new TColGeom2d_HArray1OfCurve (1,myNbCurves);
149 for(Standard_Integer i = 1; i <= myNbCurves; i++) {
150 Handle(Geom2d_OffsetCurve) NewOffsetCurve = new Geom2d_OffsetCurve(spc.GetCurves()->Value(i),Offset);
151 myResultingCurves->SetValue(i,NewOffsetCurve);
153 myStatus |= spc.myStatus;
157 myNbCurves = mySplitValues->Length() -1;
158 myResultingCurves=new TColGeom2d_HArray1OfCurve (1,myNbCurves);
160 Standard_Boolean filled = Standard_True;
161 if ( Abs ( myCurve->FirstParameter() - First ) < Precision::PConfusion() &&
162 Abs ( myCurve->LastParameter() - Last ) < Precision::PConfusion() )
163 myResultingCurves->SetValue(1,myCurve);
165 else if ( ! Segment || (!myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) &&
166 !myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve))) || ! Status ( ShapeExtend_DONE2 ) ) {
167 if(myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) ||
168 myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve) )) {
169 Handle(Geom2d_Curve) theNewCurve = Handle(Geom2d_Curve)::DownCast(myCurve->Copy());
172 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)))
173 Handle(Geom2d_BSplineCurve)::DownCast(theNewCurve)->Segment (First, Last);
174 else if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve)))
175 Handle(Geom2d_BezierCurve)::DownCast(theNewCurve)->Segment (First, Last);
177 catch (Standard_Failure const& anException) {
179 cout << "Warning: ShapeUpgrade_Split2dCurve::Build(): Exception in Segment :";
180 anException.Print(cout); cout << endl;
183 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),First,Last);
185 myResultingCurves->SetValue (1, theNewCurve);
189 Handle(Geom2d_TrimmedCurve) theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),First,Last);
190 myResultingCurves->SetValue (1, theNewCurve);
193 else filled = Standard_False;
194 if ( filled ) return;
198 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve))) {
199 Handle(Geom2d_BSplineCurve) BsCurve = Handle(Geom2d_BSplineCurve)::DownCast(myCurve->Copy());
200 Standard_Integer FirstInd =BsCurve->FirstUKnotIndex(),
201 LastInd = BsCurve->LastUKnotIndex();
202 Standard_Integer j = FirstInd;
203 for(Standard_Integer ii =1 ; ii <= mySplitValues->Length(); ii++) {
204 Standard_Real spval = mySplitValues->Value(ii);
205 for(; j <=LastInd;j++) {
206 if( spval > BsCurve->Knot(j) + Precision::PConfusion()) continue;
207 if( spval < BsCurve->Knot(j) - Precision::PConfusion()) break;
208 mySplitValues->SetValue(ii,BsCurve->Knot(j));
210 if(j == LastInd) break;
214 for (Standard_Integer i = 1; i <= myNbCurves; i++) {
215 // skl : in the next block I change "First","Last" to "Firstt","Lastt"
216 Standard_Real Firstt = mySplitValues->Value(i), Lastt = mySplitValues->Value(i+1);
217 Handle(Geom2d_Curve) theNewCurve;
219 // creates a copy of myCurve before to segment:
220 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)) ||
221 myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve))) {
222 theNewCurve = Handle(Geom2d_Curve)::DownCast(myCurve->Copy());
225 if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BSplineCurve)))
226 Handle(Geom2d_BSplineCurve)::DownCast(theNewCurve)->Segment (Firstt, Lastt);
227 else if (myCurve->IsKind (STANDARD_TYPE (Geom2d_BezierCurve)))
228 Handle(Geom2d_BezierCurve)::DownCast(theNewCurve)->Segment (Firstt, Lastt);
229 myStatus |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE3 );
231 catch (Standard_Failure const& anException) {
233 cout << "Warning: ShapeUpgrade_Split2dCurve::Build(): Exception in Segment :";
234 anException.Print(cout); cout << endl;
237 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),Firstt,Lastt);
241 theNewCurve = new Geom2d_TrimmedCurve(Handle(Geom2d_Curve)::DownCast(myCurve->Copy()),Firstt,Lastt);
243 myResultingCurves->SetValue (i, theNewCurve);
247 //=======================================================================
248 //function : GetCurves
250 //=======================================================================
252 const Handle(TColGeom2d_HArray1OfCurve)& ShapeUpgrade_SplitCurve2d::GetCurves() const
254 return myResultingCurves;