776 lines
23 KiB
C++
776 lines
23 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) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
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* Copyright (C) 2004-2011 KiCad Developers, see change_log.txt for contributors.
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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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/**
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* @file lib_arc.cpp
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*/
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#include <fctsys.h>
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#include <gr_basic.h>
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#include <macros.h>
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#include <class_drawpanel.h>
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#include <plot_common.h>
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#include <trigo.h>
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#include <wxstruct.h>
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#include <richio.h>
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#include <base_units.h>
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#include <general.h>
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#include <protos.h>
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#include <lib_arc.h>
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#include <transform.h>
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//! @brief Given three points A B C, compute the circumcenter of the resulting triangle
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//! reference: http://en.wikipedia.org/wiki/Circumscribed_circle
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//! Coordinates of circumcenter in Cartesian coordinates
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static wxPoint calcCenter( const wxPoint& A, const wxPoint& B, const wxPoint& C )
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{
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double circumCenterX, circumCenterY;
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double Ax = (double) A.x;
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double Ay = (double) A.y;
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double Bx = (double) B.x;
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double By = (double) B.y;
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double Cx = (double) C.x;
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double Cy = (double) C.y;
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wxPoint circumCenter;
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double D = 2.0 * ( Ax * ( By - Cy ) + Bx * ( Cy - Ay ) + Cx * ( Ay - By ) );
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// prevent division / 0
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if( fabs( D ) < 1e-7 )
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D = 1e-7;
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circumCenterX = ( (Ay * Ay + Ax * Ax) * (By - Cy) +
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(By * By + Bx * Bx) * (Cy - Ay) +
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(Cy * Cy + Cx * Cx) * (Ay - By) ) / D;
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circumCenterY = ( (Ay * Ay + Ax * Ax) * (Cx - Bx) +
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(By * By + Bx * Bx) * (Ax - Cx) +
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(Cy * Cy + Cx * Cx) * (Bx - Ax) ) / D;
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circumCenter.x = (int) circumCenterX;
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circumCenter.y = (int) circumCenterY;
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return circumCenter;
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}
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LIB_ARC::LIB_ARC( LIB_COMPONENT* aParent ) : LIB_ITEM( LIB_ARC_T, aParent )
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{
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m_Radius = 0;
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m_t1 = 0;
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m_t2 = 0;
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m_Width = 0;
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m_Fill = NO_FILL;
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m_isFillable = true;
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m_typeName = _( "Arc" );
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m_editState = 0;
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m_lastEditState = 0;
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}
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bool LIB_ARC::Save( OUTPUTFORMATTER& aFormatter )
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{
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int x1 = m_t1;
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if( x1 > 1800 )
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x1 -= 3600;
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int x2 = m_t2;
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if( x2 > 1800 )
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x2 -= 3600;
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aFormatter.Print( 0, "A %d %d %d %d %d %d %d %d %c %d %d %d %d\n",
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m_Pos.x, m_Pos.y, m_Radius, x1, x2, m_Unit, m_Convert, m_Width,
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fill_tab[m_Fill], m_ArcStart.x, m_ArcStart.y, m_ArcEnd.x,
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m_ArcEnd.y );
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return true;
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}
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bool LIB_ARC::Load( LINE_READER& aLineReader, wxString& aErrorMsg )
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{
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int startx, starty, endx, endy, cnt;
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char tmp[256];
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char* line = (char*) aLineReader;
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cnt = sscanf( line + 2, "%d %d %d %d %d %d %d %d %s %d %d %d %d",
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&m_Pos.x, &m_Pos.y, &m_Radius, &m_t1, &m_t2, &m_Unit,
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&m_Convert, &m_Width, tmp, &startx, &starty, &endx, &endy );
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if( cnt < 8 )
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{
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aErrorMsg.Printf( _( "arc only had %d parameters of the required 8" ), cnt );
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return false;
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}
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if( tmp[0] == 'F' )
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m_Fill = FILLED_SHAPE;
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if( tmp[0] == 'f' )
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m_Fill = FILLED_WITH_BG_BODYCOLOR;
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NORMALIZE_ANGLE_POS( m_t1 );
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NORMALIZE_ANGLE_POS( m_t2 );
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// Actual Coordinates of arc ends are read from file
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if( cnt >= 13 )
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{
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m_ArcStart.x = startx;
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m_ArcStart.y = starty;
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m_ArcEnd.x = endx;
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m_ArcEnd.y = endy;
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}
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else
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{
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// Actual Coordinates of arc ends are not read from file
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// (old library), calculate them
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m_ArcStart.x = m_Radius;
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m_ArcStart.y = 0;
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m_ArcEnd.x = m_Radius;
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m_ArcEnd.y = 0;
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RotatePoint( &m_ArcStart.x, &m_ArcStart.y, -m_t1 );
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m_ArcStart.x += m_Pos.x;
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m_ArcStart.y += m_Pos.y;
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RotatePoint( &m_ArcEnd.x, &m_ArcEnd.y, -m_t2 );
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m_ArcEnd.x += m_Pos.x;
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m_ArcEnd.y += m_Pos.y;
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}
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return true;
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}
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bool LIB_ARC::HitTest( const wxPoint& aRefPoint )
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{
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int mindist = GetPenSize() / 2;
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// Have a minimal tolerance for hit test
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if( mindist < MINIMUM_SELECTION_DISTANCE )
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mindist = MINIMUM_SELECTION_DISTANCE;
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return HitTest( aRefPoint, mindist, DefaultTransform );
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}
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bool LIB_ARC::HitTest( wxPoint aPosition, int aThreshold, const TRANSFORM& aTransform )
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{
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if( aThreshold < 0 )
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aThreshold = GetPenSize() / 2;
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// TODO: use aTransMat to calculates parameters
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wxPoint relativePosition = aPosition;
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NEGATE( relativePosition.y ); // reverse Y axis
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int distance = KiROUND( EuclideanNorm( TwoPointVector( m_Pos, relativePosition ) ) );
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if( abs( distance - m_Radius ) > aThreshold )
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return false;
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// We are on the circle, ensure we are only on the arc, i.e. between
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// m_ArcStart and m_ArcEnd
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wxPoint startEndVector = TwoPointVector( m_ArcStart, m_ArcEnd);
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wxPoint startRelativePositionVector = TwoPointVector( m_ArcStart, relativePosition );
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wxPoint centerStartVector = TwoPointVector( m_Pos, m_ArcStart );
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wxPoint centerEndVector = TwoPointVector( m_Pos, m_ArcEnd );
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wxPoint centerRelativePositionVector = TwoPointVector( m_Pos, relativePosition );
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// Compute the cross product to check if the point is in the sector
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int crossProductStart = CrossProduct( centerStartVector, centerRelativePositionVector );
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int crossProductEnd = CrossProduct( centerEndVector, centerRelativePositionVector );
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// The cross products need to be exchanged, depending on which side the center point
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// relative to the start point to end point vector lies
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if( CrossProduct( startEndVector, startRelativePositionVector ) < 0 )
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{
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EXCHG( crossProductStart, crossProductEnd );
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}
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// When the cross products have a different sign, the point lies in sector
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// also check, if the reference is near start or end point
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return HitTestPoints( m_ArcStart, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
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HitTestPoints( m_ArcEnd, relativePosition, MINIMUM_SELECTION_DISTANCE ) ||
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( crossProductStart <= 0 && crossProductEnd >= 0 );
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}
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EDA_ITEM* LIB_ARC::Clone() const
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{
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return new LIB_ARC( *this );
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}
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int LIB_ARC::compare( const LIB_ITEM& aOther ) const
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{
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wxASSERT( aOther.Type() == LIB_ARC_T );
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const LIB_ARC* tmp = ( LIB_ARC* ) &aOther;
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if( m_Pos.x != tmp->m_Pos.x )
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return m_Pos.x - tmp->m_Pos.x;
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if( m_Pos.y != tmp->m_Pos.y )
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return m_Pos.y - tmp->m_Pos.y;
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if( m_t1 != tmp->m_t1 )
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return m_t1 - tmp->m_t1;
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if( m_t2 != tmp->m_t2 )
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return m_t2 - tmp->m_t2;
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return 0;
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}
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void LIB_ARC::SetOffset( const wxPoint& aOffset )
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{
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m_Pos += aOffset;
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m_ArcStart += aOffset;
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m_ArcEnd += aOffset;
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}
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bool LIB_ARC::Inside( EDA_RECT& aRect ) const
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{
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return aRect.Contains( m_ArcStart.x, -m_ArcStart.y )
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|| aRect.Contains( m_ArcEnd.x, -m_ArcEnd.y );
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}
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void LIB_ARC::Move( const wxPoint& aPosition )
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{
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wxPoint offset = aPosition - m_Pos;
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m_Pos = aPosition;
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m_ArcStart += offset;
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m_ArcEnd += offset;
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}
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void LIB_ARC::MirrorHorizontal( const wxPoint& aCenter )
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{
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m_Pos.x -= aCenter.x;
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m_Pos.x *= -1;
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m_Pos.x += aCenter.x;
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m_ArcStart.x -= aCenter.x;
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m_ArcStart.x *= -1;
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m_ArcStart.x += aCenter.x;
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m_ArcEnd.x -= aCenter.x;
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m_ArcEnd.x *= -1;
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m_ArcEnd.x += aCenter.x;
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EXCHG( m_ArcStart, m_ArcEnd );
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}
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void LIB_ARC::MirrorVertical( const wxPoint& aCenter )
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{
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m_Pos.y -= aCenter.y;
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m_Pos.y *= -1;
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m_Pos.y += aCenter.y;
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m_ArcStart.y -= aCenter.y;
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m_ArcStart.y *= -1;
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m_ArcStart.y += aCenter.y;
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m_ArcEnd.y -= aCenter.y;
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m_ArcEnd.y *= -1;
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m_ArcEnd.y += aCenter.y;
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EXCHG( m_ArcStart, m_ArcEnd );
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}
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void LIB_ARC::Rotate( const wxPoint& aCenter, bool aRotateCCW )
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{
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int rot_angle = aRotateCCW ? -900 : 900;
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RotatePoint( &m_Pos, aCenter, rot_angle );
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RotatePoint( &m_ArcStart, aCenter, rot_angle );
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RotatePoint( &m_ArcEnd, aCenter, rot_angle );
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}
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void LIB_ARC::Plot( PLOTTER* aPlotter, const wxPoint& aOffset, bool aFill,
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const TRANSFORM& aTransform )
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{
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wxASSERT( aPlotter != NULL );
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int t1 = m_t1;
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int t2 = m_t2;
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wxPoint pos = aTransform.TransformCoordinate( m_Pos ) + aOffset;
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aTransform.MapAngles( &t1, &t2 );
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if( aFill && m_Fill == FILLED_WITH_BG_BODYCOLOR )
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{
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aPlotter->SetColor( ReturnLayerColor( LAYER_DEVICE_BACKGROUND ) );
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aPlotter->Arc( pos, -t2, -t1, m_Radius, FILLED_SHAPE, 0 );
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}
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bool already_filled = m_Fill == FILLED_WITH_BG_BODYCOLOR;
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aPlotter->SetColor( ReturnLayerColor( LAYER_DEVICE ) );
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aPlotter->Arc( pos, -t2, -t1, m_Radius, already_filled ? NO_FILL : m_Fill, GetPenSize() );
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}
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int LIB_ARC::GetPenSize() const
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{
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return ( m_Width == 0 ) ? g_DrawDefaultLineThickness : m_Width;
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}
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void LIB_ARC::drawEditGraphics( EDA_RECT* aClipBox, wxDC* aDC, int aColor )
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{
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// The edit indicators only get drawn when a new arc is being drawn.
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if( !IsNew() )
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return;
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// Use the last edit state so when the drawing switches from the end mode to the center
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// point mode, the last line between the center points gets erased.
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if( m_lastEditState == 1 )
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{
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GRLine( aClipBox, aDC, m_ArcStart.x, -m_ArcStart.y, m_ArcEnd.x, -m_ArcEnd.y, 0, aColor );
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}
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else
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{
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GRDashedLine( aClipBox, aDC, m_ArcStart.x, -m_ArcStart.y, m_Pos.x, -m_Pos.y, 0, aColor );
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GRDashedLine( aClipBox, aDC, m_ArcEnd.x, -m_ArcEnd.y, m_Pos.x, -m_Pos.y, 0, aColor );
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}
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}
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void LIB_ARC::drawGraphic( EDA_DRAW_PANEL* aPanel, wxDC* aDC, const wxPoint& aOffset,
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int aColor, int aDrawMode, void* aData, const TRANSFORM& aTransform )
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{
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// Don't draw the arc until the end point is selected. Only the edit indicators
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// get drawn at this time.
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if( IsNew() && m_lastEditState == 1 )
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return;
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wxPoint pos1, pos2, posc;
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int color = ReturnLayerColor( LAYER_DEVICE );
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if( aColor < 0 ) // Used normal color or selected color
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{
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if( IsSelected() )
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color = g_ItemSelectetColor;
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}
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else
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{
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color = aColor;
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}
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pos1 = aTransform.TransformCoordinate( m_ArcEnd ) + aOffset;
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pos2 = aTransform.TransformCoordinate( m_ArcStart ) + aOffset;
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posc = aTransform.TransformCoordinate( m_Pos ) + aOffset;
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int pt1 = m_t1;
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int pt2 = m_t2;
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bool swap = aTransform.MapAngles( &pt1, &pt2 );
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if( swap )
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{
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EXCHG( pos1.x, pos2.x );
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EXCHG( pos1.y, pos2.y );
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}
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GRSetDrawMode( aDC, aDrawMode );
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FILL_T fill = aData ? NO_FILL : m_Fill;
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if( aColor >= 0 )
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fill = NO_FILL;
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if( fill == FILLED_WITH_BG_BODYCOLOR )
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{
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GRFilledArc( aPanel->GetClipBox(), aDC, posc.x, posc.y, pt1, pt2,
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m_Radius, GetPenSize( ),
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(m_Flags & IS_MOVED) ? color : ReturnLayerColor( LAYER_DEVICE_BACKGROUND ),
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ReturnLayerColor( LAYER_DEVICE_BACKGROUND ) );
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}
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else if( fill == FILLED_SHAPE && !aData )
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{
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GRFilledArc( aPanel->GetClipBox(), aDC, posc.x, posc.y, pt1, pt2, m_Radius,
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color, color );
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}
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else
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{
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#ifdef DRAW_ARC_WITH_ANGLE
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GRArc( aPanel->GetClipBox(), aDC, posc.x, posc.y, pt1, pt2, m_Radius,
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GetPenSize(), color );
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#else
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GRArc1( aPanel->GetClipBox(), aDC, pos1.x, pos1.y, pos2.x, pos2.y,
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posc.x, posc.y, GetPenSize(), color );
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#endif
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}
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/* Set to one (1) to draw bounding box around arc to validate bounding box
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* calculation. */
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#if 0
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EDA_RECT bBox = GetBoundingBox();
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GRRect( aPanel->GetClipBox(), aDC, bBox.GetOrigin().x, bBox.GetOrigin().y,
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bBox.GetEnd().x, bBox.GetEnd().y, 0, LIGHTMAGENTA );
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#endif
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}
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EDA_RECT LIB_ARC::GetBoundingBox() const
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{
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int minX, minY, maxX, maxY, angleStart, angleEnd;
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EDA_RECT rect;
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wxPoint nullPoint, startPos, endPos, centerPos;
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wxPoint normStart = m_ArcStart - m_Pos;
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wxPoint normEnd = m_ArcEnd - m_Pos;
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if( ( normStart == nullPoint ) || ( normEnd == nullPoint ) || ( m_Radius == 0 ) )
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{
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wxLogDebug( wxT("Invalid arc drawing definition, center(%d, %d) \
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start(%d, %d), end(%d, %d), radius %d" ),
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m_Pos.x, m_Pos.y, m_ArcStart.x, m_ArcStart.y, m_ArcEnd.x,
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m_ArcEnd.y, m_Radius );
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return rect;
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}
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endPos = DefaultTransform.TransformCoordinate( m_ArcEnd );
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startPos = DefaultTransform.TransformCoordinate( m_ArcStart );
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centerPos = DefaultTransform.TransformCoordinate( m_Pos );
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angleStart = m_t1;
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angleEnd = m_t2;
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if( DefaultTransform.MapAngles( &angleStart, &angleEnd ) )
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{
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EXCHG( endPos.x, startPos.x );
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EXCHG( endPos.y, startPos.y );
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}
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/* Start with the start and end point of the arc. */
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minX = MIN( startPos.x, endPos.x );
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minY = MIN( startPos.y, endPos.y );
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maxX = MAX( startPos.x, endPos.x );
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maxY = MAX( startPos.y, endPos.y );
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/* Zero degrees is a special case. */
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if( angleStart == 0 )
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maxX = centerPos.x + m_Radius;
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/* Arc end angle wrapped passed 360. */
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if( angleStart > angleEnd )
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angleEnd += 3600;
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if( angleStart <= 900 && angleEnd >= 900 ) /* 90 deg */
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maxY = centerPos.y + m_Radius;
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if( angleStart <= 1800 && angleEnd >= 1800 ) /* 180 deg */
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minX = centerPos.x - m_Radius;
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if( angleStart <= 2700 && angleEnd >= 2700 ) /* 270 deg */
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minY = centerPos.y - m_Radius;
|
|
|
|
if( angleStart <= 3600 && angleEnd >= 3600 ) /* 0 deg */
|
|
maxX = centerPos.x + m_Radius;
|
|
|
|
rect.SetOrigin( minX, minY );
|
|
rect.SetEnd( maxX, maxY );
|
|
rect.Inflate( m_Width / 2, m_Width / 2 );
|
|
|
|
return rect;
|
|
}
|
|
|
|
|
|
void LIB_ARC::DisplayInfo( EDA_DRAW_FRAME* aFrame )
|
|
{
|
|
wxString msg;
|
|
EDA_RECT bBox = GetBoundingBox();
|
|
|
|
LIB_ITEM::DisplayInfo( aFrame );
|
|
|
|
msg = ReturnStringFromValue( g_UserUnit, m_Width, true );
|
|
|
|
aFrame->AppendMsgPanel( _( "Line width" ), msg, BLUE );
|
|
|
|
msg.Printf( wxT( "(%d, %d, %d, %d)" ), bBox.GetOrigin().x,
|
|
bBox.GetOrigin().y, bBox.GetEnd().x, bBox.GetEnd().y );
|
|
|
|
aFrame->AppendMsgPanel( _( "Bounding box" ), msg, BROWN );
|
|
}
|
|
|
|
|
|
wxString LIB_ARC::GetSelectMenuText() const
|
|
{
|
|
return wxString::Format( _( "Arc center (%s, %s), radius %s" ),
|
|
GetChars( CoordinateToString( m_Pos.x ) ),
|
|
GetChars( CoordinateToString( m_Pos.y ) ),
|
|
GetChars( CoordinateToString( m_Radius ) ) );
|
|
}
|
|
|
|
|
|
void LIB_ARC::BeginEdit( int aEditMode, const wxPoint aPosition )
|
|
{
|
|
wxCHECK_RET( ( aEditMode & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0,
|
|
wxT( "Invalid edit mode for LIB_ARC object." ) );
|
|
|
|
if( aEditMode == IS_NEW )
|
|
{
|
|
m_ArcStart = m_ArcEnd = aPosition;
|
|
m_editState = m_lastEditState = 1;
|
|
}
|
|
else if( aEditMode == IS_MOVED )
|
|
{
|
|
m_initialPos = m_Pos;
|
|
m_initialCursorPos = aPosition;
|
|
SetEraseLastDrawItem();
|
|
}
|
|
else
|
|
{
|
|
// The arc center point has to be rotated with while adjusting the
|
|
// start or end point, determine the side of this point and the distance
|
|
// from the start / end point
|
|
wxPoint middlePoint = wxPoint( (m_ArcStart.x + m_ArcEnd.x) / 2,
|
|
(m_ArcStart.y + m_ArcEnd.y) / 2 );
|
|
wxPoint centerVector = m_Pos - middlePoint;
|
|
wxPoint startEndVector = TwoPointVector( m_ArcStart, m_ArcEnd );
|
|
m_editCenterDistance = EuclideanNorm( centerVector );
|
|
|
|
// Determine on which side is the center point
|
|
m_editDirection = CrossProduct( startEndVector, centerVector ) ? 1 : -1;
|
|
|
|
// Drag either the start, end point or the outline
|
|
if( HitTestPoints( m_ArcStart, aPosition, MINIMUM_SELECTION_DISTANCE ) )
|
|
{
|
|
m_editSelectPoint = ARC_STATUS_START;
|
|
}
|
|
else if( HitTestPoints( m_ArcEnd, aPosition, MINIMUM_SELECTION_DISTANCE ) )
|
|
{
|
|
m_editSelectPoint = ARC_STATUS_END;
|
|
}
|
|
else
|
|
{
|
|
m_editSelectPoint = ARC_STATUS_OUTLINE;
|
|
}
|
|
|
|
m_editState = 0;
|
|
SetEraseLastDrawItem();
|
|
}
|
|
|
|
m_Flags = aEditMode;
|
|
}
|
|
|
|
|
|
bool LIB_ARC::ContinueEdit( const wxPoint aPosition )
|
|
{
|
|
wxCHECK_MSG( ( m_Flags & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0, false,
|
|
wxT( "Bad call to ContinueEdit(). LIB_ARC is not being edited." ) );
|
|
|
|
if( m_Flags == IS_NEW )
|
|
{
|
|
if( m_editState == 1 ) // Second position yields the arc segment length.
|
|
{
|
|
m_ArcEnd = aPosition;
|
|
m_editState = 2;
|
|
SetEraseLastDrawItem( false );
|
|
return true; // Need third position to calculate center point.
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
void LIB_ARC::EndEdit( const wxPoint& aPosition, bool aAbort )
|
|
{
|
|
wxCHECK_RET( ( m_Flags & ( IS_NEW | IS_MOVED | IS_RESIZED ) ) != 0,
|
|
wxT( "Bad call to EndEdit(). LIB_ARC is not being edited." ) );
|
|
|
|
SetEraseLastDrawItem( false );
|
|
m_lastEditState = 0;
|
|
m_editState = 0;
|
|
m_Flags = 0;
|
|
}
|
|
|
|
|
|
void LIB_ARC::calcEdit( const wxPoint& aPosition )
|
|
{
|
|
if( m_Flags == IS_RESIZED )
|
|
{
|
|
wxPoint newCenterPoint, startPos, endPos;
|
|
|
|
// Choose the point of the arc to be adjusted
|
|
if( m_editSelectPoint == ARC_STATUS_START )
|
|
{
|
|
startPos = aPosition;
|
|
endPos = m_ArcEnd;
|
|
}
|
|
else if( m_editSelectPoint == ARC_STATUS_END )
|
|
{
|
|
endPos = aPosition;
|
|
startPos = m_ArcStart;
|
|
}
|
|
else
|
|
{
|
|
// Use the cursor for adjusting the arc curvature
|
|
startPos = m_ArcStart;
|
|
endPos = m_ArcEnd;
|
|
|
|
// If the distance is too small, use the old center point
|
|
// else the new center point is calculated over the three points start/end/cursor
|
|
if( DistanceLinePoint( startPos, endPos, aPosition ) > MINIMUM_SELECTION_DISTANCE )
|
|
{
|
|
newCenterPoint = calcCenter( startPos, aPosition, endPos );
|
|
}
|
|
else
|
|
{
|
|
newCenterPoint = m_Pos;
|
|
}
|
|
|
|
// Determine if the arc angle is larger than 180 degrees -> this happens if both
|
|
// points (cursor position, center point) lie on the same side of the vector
|
|
// start-end
|
|
int crossA = CrossProduct( TwoPointVector( startPos, endPos ),
|
|
TwoPointVector( endPos, aPosition ) );
|
|
int crossB = CrossProduct( TwoPointVector( startPos, endPos ),
|
|
TwoPointVector( endPos, newCenterPoint ) );
|
|
|
|
if( ( crossA < 0 && crossB < 0 ) || ( crossA >= 0 && crossB >= 0 ) )
|
|
newCenterPoint = m_Pos;
|
|
}
|
|
|
|
if( m_editSelectPoint == ARC_STATUS_START || m_editSelectPoint == ARC_STATUS_END )
|
|
{
|
|
// Compute the new center point when the start/end points are modified
|
|
wxPoint middlePoint = wxPoint( (startPos.x + endPos.x) / 2,
|
|
(startPos.y + endPos.y) / 2 );
|
|
|
|
wxPoint startEndVector = TwoPointVector( startPos, endPos );
|
|
wxPoint perpendicularVector = wxPoint( -startEndVector.y, startEndVector.x );
|
|
double lengthPerpendicularVector = EuclideanNorm( perpendicularVector );
|
|
|
|
// prevent too large values, division / 0
|
|
if( lengthPerpendicularVector < 1e-1 )
|
|
lengthPerpendicularVector = 1e-1;
|
|
|
|
perpendicularVector.x = (int) ( (double) perpendicularVector.x *
|
|
m_editCenterDistance /
|
|
lengthPerpendicularVector ) * m_editDirection;
|
|
perpendicularVector.y = (int) ( (double) perpendicularVector.y *
|
|
m_editCenterDistance /
|
|
lengthPerpendicularVector ) * m_editDirection;
|
|
|
|
newCenterPoint = middlePoint + perpendicularVector;
|
|
|
|
m_ArcStart = startPos;
|
|
m_ArcEnd = endPos;
|
|
}
|
|
|
|
m_Pos = newCenterPoint;
|
|
calcRadiusAngles();
|
|
}
|
|
else if( m_Flags == IS_NEW )
|
|
{
|
|
if( m_editState == 1 )
|
|
{
|
|
m_ArcEnd = aPosition;
|
|
}
|
|
|
|
if( m_editState != m_lastEditState )
|
|
m_lastEditState = m_editState;
|
|
|
|
// Keep the arc center point up to date. Otherwise, there will be edit graphic
|
|
// artifacts left behind from the initial draw.
|
|
int dx, dy;
|
|
int cX, cY;
|
|
int angle;
|
|
|
|
cX = aPosition.x;
|
|
cY = aPosition.y;
|
|
|
|
dx = m_ArcEnd.x - m_ArcStart.x;
|
|
dy = m_ArcEnd.y - m_ArcStart.y;
|
|
cX -= m_ArcStart.x;
|
|
cY -= m_ArcStart.y;
|
|
angle = (int) ( atan2( (double) dy, (double) dx ) * 1800 / M_PI );
|
|
RotatePoint( &dx, &dy, angle ); /* The segment dx, dy is horizontal
|
|
* -> Length = dx, dy = 0 */
|
|
RotatePoint( &cX, &cY, angle );
|
|
cX = dx / 2; /* cX, cY is on the median segment 0.0 a dx, 0 */
|
|
|
|
RotatePoint( &cX, &cY, -angle );
|
|
cX += m_ArcStart.x;
|
|
cY += m_ArcStart.y;
|
|
m_Pos.x = cX;
|
|
m_Pos.y = cY;
|
|
calcRadiusAngles();
|
|
|
|
SetEraseLastDrawItem();
|
|
}
|
|
else if( m_Flags == IS_MOVED )
|
|
{
|
|
Move( m_initialPos + aPosition - m_initialCursorPos );
|
|
}
|
|
}
|
|
|
|
|
|
void LIB_ARC::calcRadiusAngles()
|
|
{
|
|
wxPoint centerStartVector = TwoPointVector( m_Pos, m_ArcStart );
|
|
wxPoint centerEndVector = TwoPointVector( m_Pos, m_ArcEnd );
|
|
|
|
m_Radius = KiROUND( EuclideanNorm( centerStartVector ) );
|
|
|
|
m_t1 = (int) ( atan2( (double) centerStartVector.y,
|
|
(double) centerStartVector.x ) * 1800 / M_PI );
|
|
|
|
m_t2 = (int) ( atan2( (double) centerEndVector.y,
|
|
(double) centerEndVector.x ) * 1800 / M_PI );
|
|
|
|
NORMALIZE_ANGLE_POS( m_t1 );
|
|
NORMALIZE_ANGLE_POS( m_t2 ); // angles = 0 .. 3600
|
|
|
|
// Restrict angle to less than 180 to avoid PBS display mirror Trace because it is
|
|
// assumed that the arc is less than 180 deg to find orientation after rotate or mirror.
|
|
if( (m_t2 - m_t1) > 1800 )
|
|
m_t2 -= 3600;
|
|
else if( (m_t2 - m_t1) <= -1800 )
|
|
m_t2 += 3600;
|
|
|
|
while( (m_t2 - m_t1) >= 1800 )
|
|
{
|
|
m_t2--;
|
|
m_t1++;
|
|
}
|
|
|
|
while( (m_t1 - m_t2) >= 1800 )
|
|
{
|
|
m_t2++;
|
|
m_t1--;
|
|
}
|
|
|
|
NORMALIZE_ANGLE_POS( m_t1 );
|
|
|
|
if( !IsMoving() )
|
|
NORMALIZE_ANGLE_POS( m_t2 );
|
|
}
|