1 // File: GC_MakeArcOfCircle.cxx
2 // Created: Fri Oct 2 16:30:57 1992
6 #include <GC_MakeArcOfCircle.ixx>
7 #include <gce_MakeCirc.hxx>
8 #include <gce_MakeLin.hxx>
9 #include <Geom_Circle.hxx>
10 #include <Extrema_ExtElC.hxx>
11 #include <Extrema_POnCurv.hxx>
12 #include <StdFail_NotDone.hxx>
15 //=======================================================================
16 //function : GC_MakeArcOfCircle
18 //=======================================================================
19 GC_MakeArcOfCircle::GC_MakeArcOfCircle(const gp_Pnt& P1 ,
23 Standard_Boolean sense;
25 gce_MakeCirc Cir(P1, P2, P3);
26 TheError = Cir.Status();
27 if (TheError == gce_Done) {
28 Standard_Real Alpha1, Alpha3;//,Alpha2
29 gp_Circ C(Cir.Value());
30 //modified by NIZNHY-PKV Thu Mar 3 10:53:02 2005f
31 //Alpha1 is always =0.
32 //Alpha1 = ElCLib::Parameter(C,P1);
33 //Alpha2 = ElCLib::Parameter(C,P2);
34 //Alpha3 = ElCLib::Parameter(C,P3);
36 //if (Alpha2 >= Alpha1 && Alpha2 <= Alpha3) sense = Standard_True;
37 //else if (Alpha1 <= Alpha3 && Alpha2 >= Alpha3 ) sense = Standard_True;
38 //else sense = Standard_False;
41 Alpha3 = ElCLib::Parameter(C, P3);
43 //modified by NIZNHY-PKV Thu Mar 3 10:53:04 2005t
45 Handle(Geom_Circle) Circ = new Geom_Circle(C);
46 TheArc= new Geom_TrimmedCurve(Circ, Alpha1, Alpha3, sense);
50 //=======================================================================
51 //function : GC_MakeArcOfCircle
53 //=======================================================================
54 GC_MakeArcOfCircle::GC_MakeArcOfCircle(const gp_Pnt& P1 ,
59 gce_MakeLin Corde(P1,P2);
60 TheError = Corde.Status();
61 if (TheError == gce_Done) {
62 gp_Lin corde(Corde.Value());
63 gp_Dir dir(corde.Direction());
65 gp_Dir Daxe(dbid^dir);
66 gp_Dir Dir1(Daxe^dir);
67 gp_Lin bis(gp_Pnt((P1.X()+P2.X())/2.,(P1.Y()+P2.Y())/2.,
68 (P1.Z()+P2.Z())/2.),Dir1);
71 Standard_Real Tol = 0.000000001;
72 Extrema_ExtElC distmin(bis,norm,Tol);
73 if (!distmin.IsDone()) { TheError = gce_IntersectionError; }
75 Standard_Integer nbext = distmin.NbExt();
76 if (nbext == 0) { TheError = gce_IntersectionError; }
78 Standard_Real TheDist = RealLast();
79 gp_Pnt pInt,pon1,pon2;
80 Standard_Integer i = 1;
81 Extrema_POnCurv Pon1,Pon2;
83 if (distmin.SquareDistance(i)<TheDist) {
84 TheDist = distmin.SquareDistance(i);
85 distmin.Points(i,Pon1,Pon2);
88 pInt = gp_Pnt((pon1.XYZ()+pon2.XYZ())/2.);
92 Standard_Real Rad = (pInt.Distance(P1)+pInt.Distance(P2))/2.;
93 cir = gp_Circ(gp_Ax2(pInt,Daxe,d),Rad);
94 Standard_Real Alpha1 = ElCLib::Parameter(cir,P1);
95 Standard_Real Alpha3 = ElCLib::Parameter(cir,P2);
96 Handle(Geom_Circle) Circ = new Geom_Circle(cir);
97 TheArc= new Geom_TrimmedCurve(Circ,Alpha1,Alpha3, Standard_True);
102 //=======================================================================
103 //function : GC_MakeArcOfCircle
105 //=======================================================================
106 GC_MakeArcOfCircle::GC_MakeArcOfCircle(const gp_Circ& Circ ,
109 const Standard_Boolean Sense )
111 Standard_Real Alpha1 = ElCLib::Parameter(Circ,P1);
112 Standard_Real Alpha2 = ElCLib::Parameter(Circ,P2);
113 Handle(Geom_Circle) C = new Geom_Circle(Circ);
114 TheArc= new Geom_TrimmedCurve(C,Alpha1,Alpha2,Sense);
117 //=======================================================================
118 //function : GC_MakeArcOfCircle
120 //=======================================================================
121 GC_MakeArcOfCircle::GC_MakeArcOfCircle(const gp_Circ& Circ ,
123 const Standard_Real Alpha ,
124 const Standard_Boolean Sense )
126 Standard_Real Alphafirst = ElCLib::Parameter(Circ,P);
127 Handle(Geom_Circle) C = new Geom_Circle(Circ);
128 TheArc= new Geom_TrimmedCurve(C,Alphafirst,Alpha,Sense);
131 //=======================================================================
132 //function : GC_MakeArcOfCircle
134 //=======================================================================
135 GC_MakeArcOfCircle::GC_MakeArcOfCircle(const gp_Circ& Circ ,
136 const Standard_Real Alpha1 ,
137 const Standard_Real Alpha2 ,
138 const Standard_Boolean Sense )
140 Handle(Geom_Circle) C = new Geom_Circle(Circ);
141 TheArc= new Geom_TrimmedCurve(C,Alpha1,Alpha2,Sense);
144 //=======================================================================
147 //=======================================================================
148 const Handle(Geom_TrimmedCurve)& GC_MakeArcOfCircle::Value() const
150 StdFail_NotDone_Raise_if(!TheError == gce_Done,"");
153 //=======================================================================
154 //function : Operator
156 //=======================================================================
157 const Handle(Geom_TrimmedCurve)& GC_MakeArcOfCircle::Operator() const
161 //=======================================================================
162 //function : operator
164 //=======================================================================
165 GC_MakeArcOfCircle::operator Handle(Geom_TrimmedCurve) () const