143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2018 CERN
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __SHAPE_ARC_H
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#define __SHAPE_ARC_H
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#include <geometry/shape.h>
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#include <geometry/seg.h>
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class SHAPE_LINE_CHAIN;
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class SHAPE_ARC : public SHAPE
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{
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public:
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SHAPE_ARC() :
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SHAPE( SH_ARC ), m_centralAngle( 0.0 ), m_width( 0 ) {};
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SHAPE_ARC( const VECTOR2I& aArcCenter, const VECTOR2I& aArcStartPoint,
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double aCenterAngle, int aWidth = 0 ) :
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SHAPE( SH_ARC ), m_p0( aArcStartPoint ), m_pc( aArcCenter ), m_centralAngle( aCenterAngle ),
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m_width( aWidth )
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{
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}
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SHAPE_ARC( const SHAPE_ARC& aOther )
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: SHAPE( SH_ARC )
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{
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m_p0 = aOther.m_p0;
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m_pc = aOther.m_pc;
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m_centralAngle = aOther.m_centralAngle;
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m_width = aOther.m_width;
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}
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~SHAPE_ARC() {}
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SHAPE* Clone() const override
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{
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return new SHAPE_ARC( *this );
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}
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const VECTOR2I& GetP0() const { return m_p0; }
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const VECTOR2I GetP1() const;
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const VECTOR2I& GetCenter() const { return m_pc; }
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const BOX2I BBox( int aClearance = 0 ) const override;
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bool Collide( const SEG& aSeg, int aClearance = 0 ) const override;
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bool Collide( const VECTOR2I& aP, int aClearance = 0 ) const override;
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void SetWidth( int aWidth )
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{
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m_width = aWidth;
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}
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int GetWidth() const
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{
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return m_width;
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}
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bool IsSolid() const override
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{
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return true;
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}
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void Move( const VECTOR2I& aVector ) override
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{
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m_p0 += aVector;
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m_pc += aVector;
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}
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int GetRadius() const;
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SEG GetChord() const
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{
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return SEG( m_p0, GetP1() );
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}
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double GetCentralAngle() const;
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double GetStartAngle() const;
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double GetEndAngle() const;
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/*
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bool ConstructFromCorners( VECTOR2I aP0, VECTOR2I aP1, double aCenterAngle );
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bool ConstructFromCircle( VECTOR2I aP0, double aRadius );
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bool ConstructFromCenterAndAngles( VECTOR2I aCenter, double aRadius, double aStartAngle, double aCenterAngle );
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bool ConstructFromCornerAndAngles( VECTOR2I aP0,
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double aStartAngle,
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double aCenterAngle,
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double aRadius );
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*/
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/**
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* Constructs a SHAPE_LINE_CHAIN of segments from a given arc
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* @param aAccuracy maximum divergence from true arc given in internal units
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* ** Note that the default of 500.0 here is given using ARC_DEF_HIGH_ACCURACY
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* for pcbnew units. This is to allow common geometry collision functions
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* Other programs should call this using explicit accuracy values
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* TODO: unify KiCad internal units
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*
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* @return a SHAPE_LINE_CHAIN
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*/
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const SHAPE_LINE_CHAIN ConvertToPolyline( double aAccuracy = 500.0 ) const;
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private:
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bool ccw( const VECTOR2I& aA, const VECTOR2I& aB, const VECTOR2I& aC ) const
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{
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return (ecoord) ( aC.y - aA.y ) * ( aB.x - aA.x ) >
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(ecoord) ( aB.y - aA.y ) * ( aC.x - aA.x );
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}
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VECTOR2I m_p0, m_pc;
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double m_centralAngle;
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int m_width;
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};
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#endif
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