238 lines
8.0 KiB
C++
238 lines
8.0 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) 2014 CERN
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* Copyright (C) 2021-2022 KiCad Developers, see AUTHORS.txt for contributors.
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* @author Maciej Suminski <maciej.suminski@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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#include "tool/edit_constraints.h"
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#include "tool/edit_points.h"
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#include <geometry/seg.h>
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#include <trigo.h>
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#include <geometry/geometry_utils.h>
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void EC_VERTICAL::Apply( EDIT_POINT& aHandle, const GRID_HELPER& aGrid )
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{
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VECTOR2I point = aHandle.GetPosition();
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if( aHandle.GetGridConstraint() == SNAP_TO_GRID )
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point = aGrid.AlignGrid( point );
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point.x = m_constrainer.GetPosition().x;
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aHandle.SetPosition( point );
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}
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void EC_HORIZONTAL::Apply( EDIT_POINT& aHandle, const GRID_HELPER& aGrid )
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{
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VECTOR2I point = aHandle.GetPosition();
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if( aHandle.GetGridConstraint() == SNAP_TO_GRID )
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point = aGrid.AlignGrid( point );
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point.y = m_constrainer.GetPosition().y;
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aHandle.SetPosition( point );
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}
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void EC_45DEGREE::Apply( EDIT_POINT& aHandle, const GRID_HELPER& aGrid )
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{
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VECTOR2I lineVector( aHandle.GetPosition() - m_constrainer.GetPosition() );
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VECTOR2I newLineVector = GetVectorSnapped45( lineVector );
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if( aHandle.GetGridConstraint() == SNAP_TO_GRID
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&& ( newLineVector.x == 0 || newLineVector.y == 0 ) )
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{
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VECTOR2I snap = aGrid.AlignGrid( m_constrainer.GetPosition() + newLineVector );
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if( newLineVector.x == 0 )
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aHandle.SetPosition( VECTOR2I( m_constrainer.GetPosition().x, snap.y ) );
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else
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aHandle.SetPosition( VECTOR2I( snap.x, m_constrainer.GetPosition().y ) );
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}
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else
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{
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aHandle.SetPosition( m_constrainer.GetPosition() + newLineVector );
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}
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}
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EC_LINE::EC_LINE( EDIT_POINT& aConstrained, const EDIT_POINT& aConstrainer ) :
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EDIT_CONSTRAINT<EDIT_POINT>( aConstrained ),
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m_constrainer( aConstrainer )
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{
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m_line = m_constrained.GetPosition() - m_constrainer.GetPosition();
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}
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void EC_LINE::Apply( EDIT_POINT& aHandle, const GRID_HELPER& aGrid )
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{
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SEG main( m_constrainer.GetPosition(), m_constrainer.GetPosition() + m_line );
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if( aHandle.GetGridConstraint() == SNAP_TO_GRID
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&& ( m_line.x == 0 || m_line.y == 0 ) )
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{
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VECTOR2I snappedHandle = aGrid.AlignGrid( aHandle.GetPosition() );
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if( m_line.x == 0 )
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aHandle.SetPosition( VECTOR2I( aHandle.GetPosition().x, snappedHandle.y ) );
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else
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aHandle.SetPosition( VECTOR2I( snappedHandle.x, aHandle.GetPosition().y ) );
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}
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SEG projection( aHandle.GetPosition(), aHandle.GetPosition() + m_line.Perpendicular() );
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if( OPT_VECTOR2I intersect = projection.IntersectLines( main ) )
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aHandle.SetPosition( *intersect );
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}
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void EC_CIRCLE::Apply( EDIT_POINT& aHandle, const GRID_HELPER& aGrid )
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{
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VECTOR2I centerToEnd = m_end.GetPosition() - m_center.GetPosition();
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VECTOR2I centerToPoint = aHandle.GetPosition() - m_center.GetPosition();
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int radius = centerToEnd.EuclideanNorm();
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EDA_ANGLE angle( centerToPoint );
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VECTOR2I newLine( radius, 0 );
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RotatePoint( newLine, -angle );
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aHandle.SetPosition( m_center.GetPosition() + newLine );
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}
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EC_CONVERGING::EC_CONVERGING( EDIT_LINE& aLine, EDIT_POINTS& aPoints ) :
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EDIT_CONSTRAINT<EDIT_LINE>( aLine ),
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m_colinearConstraint( nullptr ),
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m_editPoints( aPoints )
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{
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// Dragged segment endings
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EDIT_POINT& origin = aLine.GetOrigin();
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EDIT_POINT& end = aLine.GetEnd();
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// Previous and next points, to make constraining lines (adjacent to the dragged line)
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EDIT_POINT& prevOrigin = *aPoints.Previous( origin, false );
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EDIT_POINT& nextEnd = *aPoints.Next( end, false );
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// Constraints for segments adjacent to the dragged one
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m_originSideConstraint = new EC_LINE( origin, prevOrigin );
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m_endSideConstraint = new EC_LINE( end, nextEnd );
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// Store the current vector of the line
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m_draggedVector = end.GetPosition() - origin.GetPosition();
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// Check for colinearity
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SEG originSide( origin.GetPosition(), prevOrigin.GetPosition() );
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SEG endSide( end.GetPosition(), nextEnd.GetPosition() );
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SEG dragged( origin.GetPosition(), end.GetPosition() );
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if( dragged.Collinear( originSide ) )
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m_colinearConstraint = m_originSideConstraint;
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else if( dragged.Collinear( endSide ) )
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m_colinearConstraint = m_endSideConstraint;
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}
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EC_CONVERGING::~EC_CONVERGING()
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{
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delete m_originSideConstraint;
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delete m_endSideConstraint;
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// m_colinearConstraint should not be freed, it is a pointer to one of the above
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}
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void EC_CONVERGING::Apply( EDIT_LINE& aHandle, const GRID_HELPER& aGrid )
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{
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// The dragged segment endpoints
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EDIT_POINT& origin = aHandle.GetOrigin();
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EDIT_POINT& end = aHandle.GetEnd();
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if( m_colinearConstraint )
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{
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m_colinearConstraint->Apply( origin, aGrid );
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m_colinearConstraint->Apply( end, aGrid );
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}
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// The dragged segment
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SEG dragged( origin.GetPosition(), origin.GetPosition() + m_draggedVector );
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// Do not allow points on the adjacent segments move freely
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m_originSideConstraint->Apply( aGrid );
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m_endSideConstraint->Apply( aGrid );
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EDIT_POINT& prevOrigin = *m_editPoints.Previous( origin, false );
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EDIT_POINT& nextEnd = *m_editPoints.Next( end, false );
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// Two segments adjacent to the dragged segment
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SEG originSide = SEG( origin.GetPosition(), prevOrigin.GetPosition() );
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SEG endSide = SEG( end.GetPosition(), nextEnd.GetPosition() );
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// First intersection point (dragged segment against origin side)
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if( OPT_VECTOR2I originIntersect = dragged.IntersectLines( originSide ) )
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origin.SetPosition( *originIntersect );
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// Second intersection point (dragged segment against end side)
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if( OPT_VECTOR2I endIntersect = dragged.IntersectLines( endSide ) )
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end.SetPosition( *endIntersect );
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// Check if adjacent segments intersect (did we dragged the line to the point that it may
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// create a selfintersecting polygon?)
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originSide = SEG( origin.GetPosition(), prevOrigin.GetPosition() );
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endSide = SEG( end.GetPosition(), nextEnd.GetPosition() );
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if( OPT_VECTOR2I originEndIntersect = endSide.Intersect( originSide ) )
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{
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// Triangle intersect by definition
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if( m_editPoints.LinesSize() > 3 )
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{
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origin.SetPosition( *originEndIntersect );
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end.SetPosition( *originEndIntersect );
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}
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}
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}
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EC_PERPLINE::EC_PERPLINE( EDIT_LINE& aLine ) :
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EDIT_CONSTRAINT<EDIT_LINE>( aLine )
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{
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m_mid = aLine.GetPosition();
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m_line = ( aLine.GetEnd().GetPosition() - aLine.GetOrigin().GetPosition() ).Perpendicular();
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}
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void EC_PERPLINE::Apply( EDIT_LINE& aHandle, const GRID_HELPER& aGrid )
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{
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SEG main( m_mid, m_mid + m_line );
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SEG projection( aHandle.GetPosition(), aHandle.GetPosition() + m_line.Perpendicular() );
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if( OPT_VECTOR2I intersect = projection.IntersectLines( main ) )
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aHandle.SetPosition( *intersect );
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VECTOR2D delta = aHandle.GetEnd().GetPosition() - aHandle.GetOrigin().GetPosition();
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aHandle.GetOrigin().SetPosition( aHandle.GetOrigin().GetPosition() );
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aHandle.GetEnd().SetPosition( aHandle.GetOrigin().GetPosition() + delta );
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}
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