1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
//--------------------------------------------------------------------
//
// File Name : IGESGeom_CircularArc.cxx
// Date :
// Author : CKY / Contract Toubro-Larsen
// Copyright : MATRA-DATAVISION 1993
//
//--------------------------------------------------------------------
#include <IGESGeom_CircularArc.ixx>
#include <gp_Dir2d.hxx>
#include <gp_GTrsf.hxx>
IGESGeom_CircularArc::IGESGeom_CircularArc () { }
void IGESGeom_CircularArc::Init
(const Standard_Real aZT, const gp_XY& aCenter,
const gp_XY& aStart, const gp_XY& anEnd)
{
theZT = aZT;
theCenter = aCenter;
theStart = aStart;
theEnd = anEnd;
InitTypeAndForm(100,0);
}
gp_Pnt2d IGESGeom_CircularArc::Center () const
{
gp_Pnt2d Center(theCenter);
return Center;
}
gp_Pnt IGESGeom_CircularArc::TransformedCenter () const
{
gp_XYZ Center(theCenter.X(), theCenter.Y(), theZT);
if (HasTransf()) Location().Transforms(Center);
gp_Pnt transCenter(Center);
return transCenter;
}
gp_Pnt2d IGESGeom_CircularArc::StartPoint () const
{
gp_Pnt2d Start(theStart);
return Start;
}
gp_Pnt IGESGeom_CircularArc::TransformedStartPoint () const
{
gp_XYZ Start(theStart.X(), theStart.Y(), theZT);
if (HasTransf()) Location().Transforms(Start);
gp_Pnt transStart(Start);
return transStart;
}
Standard_Real IGESGeom_CircularArc::ZPlane () const
{
return theZT;
}
gp_Pnt2d IGESGeom_CircularArc::EndPoint () const
{
gp_Pnt2d End(theEnd);
return End;
}
gp_Pnt IGESGeom_CircularArc::TransformedEndPoint () const
{
gp_XYZ End(theEnd.X(), theEnd.Y(), theZT);
if (HasTransf()) Location().Transforms(End);
gp_Pnt transEnd(End);
return transEnd;
}
Standard_Real IGESGeom_CircularArc::Radius () const
{
Standard_Real x1, y1, x2, y2;
x1 = theStart.X();
y1 = theStart.Y();
x2 = theCenter.X();
y2 = theCenter.Y();
Standard_Real radius = Sqrt(Square(x2 - x1) + Square(y2 - y1));
return radius;
}
Standard_Real IGESGeom_CircularArc::Angle () const
{
Standard_Real x1, y1, x2, y2, xc, yc;
xc = theCenter.X();
yc = theCenter.Y();
x1 = theStart.X();
y1 = theStart.Y();
x2 = theEnd.X();
y2 = theEnd.Y();
gp_Dir2d dir1(x1-xc, y1-yc); // After shifting the centre of
// arc to the origin
gp_Dir2d dir2(x2-xc, y2-yc); // After shifting the centre of
// arc to the origin
Standard_Real t = dir1.Angle(dir2);
return t + (t > 0 ? 0 : 2*PI);
}
gp_Dir IGESGeom_CircularArc::Axis () const
{
gp_Dir axis(0.0 , 0.0, 1.0);
return axis;
}
gp_Dir IGESGeom_CircularArc::TransformedAxis () const
{
gp_XYZ axis(0.0 , 0.0, 1.0);
if (!HasTransf()) return gp_Dir(axis);
gp_GTrsf loc = Location();
loc.SetTranslationPart (gp_XYZ(0.,0.,0.));
loc.Transforms(axis);
return gp_Dir(axis);
}
Standard_Boolean IGESGeom_CircularArc::IsClosed () const
{
return ((theStart.X() == theEnd.X()) && (theStart.Y() == theEnd.Y()));
}
|
