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shape_circle.h
1/*
2 * This program source code file is part of KiCad, a free EDA CAD application.
3 *
4 * Copyright (C) 2013 CERN
5 * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
6 * Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, you may find one here:
20 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
21 * or you may search the http://www.gnu.org website for the version 2 license,
22 * or you may write to the Free Software Foundation, Inc.,
23 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
24 */
25
26#ifndef __SHAPE_CIRCLE_H
27#define __SHAPE_CIRCLE_H
28
29#include <geometry/shape.h>
30#include <geometry/circle.h>
31#include <math/box2.h>
32#include <math/vector2d.h>
33
34#include <algorithm>
35
36class SHAPE_CIRCLE : public SHAPE
37{
38public:
39 SHAPE_CIRCLE() :
40 SHAPE( SH_CIRCLE ),
41 m_circle()
42 {}
43
44 SHAPE_CIRCLE( const VECTOR2I& aCenter, int aRadius ) :
45 SHAPE( SH_CIRCLE ),
46 m_circle( aCenter, aRadius )
47 {}
48
49 SHAPE_CIRCLE( const CIRCLE& aCircle ) :
50 SHAPE( SH_CIRCLE ),
51 m_circle( aCircle )
52 {}
53
54 SHAPE_CIRCLE( const SHAPE_CIRCLE& aOther ) :
55 SHAPE( SH_CIRCLE ),
56 m_circle( aOther.m_circle )
57 {};
58
60 {}
61
62 SHAPE* Clone() const override
63 {
64 return new SHAPE_CIRCLE( *this );
65 }
66
67 SHAPE_CIRCLE& operator=( const SHAPE_CIRCLE& ) = default;
68
69 const BOX2I BBox( int aClearance = 0 ) const override
70 {
71 const VECTOR2I rc( m_circle.Radius + aClearance, m_circle.Radius + aClearance );
72
73 return BOX2I( m_circle.Center - rc, rc * 2 );
74 }
75
76 bool Collide( const SEG& aSeg, int aClearance = 0, int* aActual = nullptr,
77 VECTOR2I* aLocation = nullptr ) const override
78 {
79 int minDist = aClearance + m_circle.Radius;
80 VECTOR2I pn = aSeg.NearestPoint( m_circle.Center );
81 ecoord dist_sq = ( pn - m_circle.Center ).SquaredEuclideanNorm();
82
83 if( dist_sq == 0 || dist_sq < SEG::Square( minDist ) )
84 {
85 if( aLocation )
86 *aLocation = pn;
87
88 if( aActual )
89 *aActual = std::max( 0, (int) sqrt( dist_sq ) - m_circle.Radius );
90
91 return true;
92 }
93
94 return false;
95 }
96
97 void SetRadius( int aRadius )
98 {
99 m_circle.Radius = aRadius;
100 }
101
102 void SetCenter( const VECTOR2I& aCenter )
103 {
104 m_circle.Center = aCenter;
105 }
106
107 int GetRadius() const
108 {
109 return m_circle.Radius;
110 }
111
112 const VECTOR2I GetCenter() const
113 {
114 return m_circle.Center;
115 }
116
117 const CIRCLE GetCircle() const
118 {
119 return m_circle;
120 }
121
122 void Move( const VECTOR2I& aVector ) override
123 {
124 m_circle.Center += aVector;
125 }
126
127 void Rotate( double aAngle, const VECTOR2I& aCenter = { 0, 0 } ) override
128 {
129 m_circle.Center -= aCenter;
130 m_circle.Center = m_circle.Center.Rotate( aAngle );
131 m_circle.Center += aCenter;
132 }
133
134 bool IsSolid() const override
135 {
136 return true;
137 }
138
139private:
140 CIRCLE m_circle;
141};
142
143#endif
Represent basic circle geometry with utility geometry functions.
Definition circle.h:33
VECTOR2I Center
Public to make access simpler.
Definition circle.h:116
int Radius
Public to make access simpler.
Definition circle.h:115
Definition seg.h:41
const VECTOR2I NearestPoint(const VECTOR2I &aP) const
Compute a point on the segment (this) that is closest to point aP.
Definition seg.cpp:227
Definition shape_circle.h:37
bool Collide(const SEG &aSeg, int aClearance=0, int *aActual=nullptr, VECTOR2I *aLocation=nullptr) const override
Check if the boundary of shape (this) lies closer to the segment aSeg than aClearance,...
Definition shape_circle.h:76
const BOX2I BBox(int aClearance=0) const override
Compute a bounding box of the shape, with a margin of aClearance a collision.
Definition shape_circle.h:69
SHAPE * Clone() const override
Return a dynamically allocated copy of the shape.
Definition shape_circle.h:62
void Rotate(double aAngle, const VECTOR2I &aCenter={ 0, 0 }) override
Definition shape_circle.h:127
An abstract shape on 2D plane.
Definition shape.h:117
VECTOR2< T > Rotate(double aAngle) const
Rotate the vector by a given angle.
Definition vector2d.h:365