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
|
// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#include "Wm5MathematicsPCH.h"
#include "Wm5IntrLine2Arc2.h"
#include "Wm5IntrLine2Circle2.h"
namespace Wm5
{
//----------------------------------------------------------------------------
template <typename Real>
IntrLine2Arc2<Real>::IntrLine2Arc2 (const Line2<Real>& rkLine,
const Arc2<Real>& rkArc)
:
mLine(&rkLine),
mArc(&rkArc)
{
}
//----------------------------------------------------------------------------
template <typename Real>
const Line2<Real>& IntrLine2Arc2<Real>::GetLine () const
{
return *mLine;
}
//----------------------------------------------------------------------------
template <typename Real>
const Arc2<Real>& IntrLine2Arc2<Real>::GetArc () const
{
return *mArc;
}
//----------------------------------------------------------------------------
template <typename Real>
bool IntrLine2Arc2<Real>::Find ()
{
Real t[2];
int quantity;
bool intersects = IntrLine2Circle2<Real>::Find(mLine->Origin,
mLine->Direction, mArc->Center, mArc->Radius, quantity, t);
mQuantity = 0;
if (intersects)
{
for (int i = 0; i < quantity; ++i)
{
Vector2<Real> point = mLine->Origin + mLine->Direction*t[i];
if (mArc->Contains(point))
{
mPoint[mQuantity++] = point;
}
}
}
mIntersectionType = (mQuantity > 0 ? IT_POINT : IT_EMPTY);
return mIntersectionType != IT_EMPTY;
}
//----------------------------------------------------------------------------
template <typename Real>
int IntrLine2Arc2<Real>::GetQuantity () const
{
return mQuantity;
}
//----------------------------------------------------------------------------
template <typename Real>
const Vector2<Real>& IntrLine2Arc2<Real>::GetPoint (int i) const
{
return mPoint[i];
}
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// Explicit instantiation.
//----------------------------------------------------------------------------
template WM5_MATHEMATICS_ITEM
class IntrLine2Arc2<float>;
template WM5_MATHEMATICS_ITEM
class IntrLine2Arc2<double>;
//----------------------------------------------------------------------------
}
|
