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1 | // Created on: 1992-10-02 |
2 | // Created by: Remi GILET |
3 | // Copyright (c) 1992-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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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 |
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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. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
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16 | |
17 | #include <GCE2d_MakeArcOfCircle.ixx> |
18 | #include <gp_Vec2d.hxx> |
19 | #include <Geom2d_Circle.hxx> |
20 | #include <gce_MakeCirc2d.hxx> |
21 | #include <gce_MakeLin2d.hxx> |
22 | #include <ElCLib.hxx> |
23 | #include <StdFail_NotDone.hxx> |
24 | #include <IntAna2d_AnaIntersection.hxx> |
25 | |
26 | |
27 | GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1 , |
28 | const gp_Pnt2d& P2 , |
29 | const gp_Pnt2d& P3 ) |
30 | { |
31 | gce_MakeCirc2d Cir = gce_MakeCirc2d(P1,P2,P3); |
32 | TheError = Cir.Status(); |
33 | if (TheError == gce_Done) { |
34 | gp_Circ2d C(Cir.Value()); |
35 | Standard_Real Alpha1 = ElCLib::Parameter(C,P1); |
36 | Standard_Real Alpha2 = ElCLib::Parameter(C,P3); |
37 | Handle(Geom2d_Circle) Circ = new Geom2d_Circle(C); |
38 | TheArc= new Geom2d_TrimmedCurve(Circ,Alpha1,Alpha2,Standard_True); |
39 | } |
40 | } |
41 | |
42 | GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1 , |
43 | const gp_Vec2d& V , |
44 | const gp_Pnt2d& P2 ) |
45 | { |
46 | Standard_Boolean Sense; |
47 | gp_Circ2d cir; |
48 | gp_Lin2d corde = gce_MakeLin2d(P1,P2); |
49 | gp_Dir2d dir(corde.Direction()); |
50 | gp_Lin2d bis(gp_Pnt2d((P1.X()+P2.X())/2.,(P1.Y()+P2.Y())/2.), |
51 | gp_Dir2d(-dir.Y(),dir.X())); |
52 | gp_Lin2d norm(P1,gp_Dir2d(-V.Y(),V.X())); |
53 | TheError = gce_ConfusedPoints; |
54 | |
55 | IntAna2d_AnaIntersection Intp(bis,norm); |
56 | |
57 | if (Intp.IsDone()) |
58 | { |
59 | if (!Intp.IsEmpty()) |
60 | { |
61 | gp_Pnt2d center(Intp.Point(1).Value()); |
62 | Standard_Real rad = (center.Distance(P1)+center.Distance(P2))/2.; |
63 | cir = gce_MakeCirc2d(center,rad); |
64 | TheError = gce_Done; |
65 | } |
66 | } |
67 | |
68 | if (TheError == gce_Done) { |
69 | Standard_Real Alpha1 = ElCLib::Parameter(cir,P1); |
70 | Standard_Real Alpha2 = ElCLib::Parameter(cir,P2); |
71 | Handle(Geom2d_Circle) Circ = new Geom2d_Circle(cir); |
72 | gp_Vec2d vv(dir); |
73 | Standard_Real cross = V^vv; |
74 | Sense = cross > 0.; |
75 | TheArc= new Geom2d_TrimmedCurve(Circ,Alpha1,Alpha2,Sense); |
76 | } |
77 | } |
78 | |
79 | GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ , |
80 | const gp_Pnt2d& P1 , |
81 | const gp_Pnt2d& P2 , |
82 | const Standard_Boolean Sense ) |
83 | { |
84 | Standard_Real Alpha1 = ElCLib::Parameter(Circ,P1); |
85 | Standard_Real Alpha2 = ElCLib::Parameter(Circ,P2); |
86 | Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ); |
87 | TheArc= new Geom2d_TrimmedCurve(C,Alpha1,Alpha2,Sense); |
88 | TheError = gce_Done; |
89 | } |
90 | |
91 | GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ , |
92 | const gp_Pnt2d& P , |
93 | const Standard_Real Alpha , |
94 | const Standard_Boolean Sense ) |
95 | { |
96 | Standard_Real Alphafirst = ElCLib::Parameter(Circ,P); |
97 | Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ); |
98 | TheArc= new Geom2d_TrimmedCurve(C,Alphafirst,Alpha,Sense); |
99 | TheError = gce_Done; |
100 | } |
101 | |
102 | GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ , |
103 | const Standard_Real Alpha1 , |
104 | const Standard_Real Alpha2 , |
105 | const Standard_Boolean Sense ) |
106 | { |
107 | Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ); |
108 | TheArc= new Geom2d_TrimmedCurve(C,Alpha1,Alpha2,Sense); |
109 | TheError = gce_Done; |
110 | } |
111 | |
112 | const Handle(Geom2d_TrimmedCurve)& GCE2d_MakeArcOfCircle::Value() const |
113 | { |
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114 | StdFail_NotDone_Raise_if(TheError != gce_Done,""); |
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115 | return TheArc; |
116 | } |