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kicad/pcbnew/class_drawsegment.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2019 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <bezier_curves.h>
#include <pcb_screen.h>
#include <bitmaps.h>
#include <pcb_edit_frame.h>
#include <class_board.h>
#include <class_module.h>
#include <class_drawsegment.h>
#include <base_units.h>
#include <settings/color_settings.h>
#include <settings/settings_manager.h>
DRAWSEGMENT::DRAWSEGMENT( BOARD_ITEM* aParent, KICAD_T idtype ) :
BOARD_ITEM( aParent, idtype )
{
m_Type = 0;
m_Angle = 0;
m_Flags = 0;
m_Shape = S_SEGMENT;
m_Width = Millimeter2iu( DEFAULT_LINE_WIDTH );
}
DRAWSEGMENT::~DRAWSEGMENT()
{
}
void DRAWSEGMENT::SetPosition( const wxPoint& aPos )
{
m_Start = aPos;
}
const wxPoint DRAWSEGMENT::GetPosition() const
{
if( m_Shape == S_POLYGON )
return (wxPoint) m_Poly.CVertex( 0 );
else
return m_Start;
}
double DRAWSEGMENT::GetLength() const
{
double length = 0.0;
switch( m_Shape )
{
case S_CURVE:
for( size_t ii = 1; ii < m_BezierPoints.size(); ++ii )
length += GetLineLength( m_BezierPoints[ii - 1], m_BezierPoints[ii] );
break;
case S_SEGMENT:
length = GetLineLength( GetStart(), GetEnd() );
break;
default:
wxASSERT_MSG( false, "DRAWSEGMENT::GetLength not implemented for shape"
+ ShowShape( GetShape() ) );
break;
}
return length;
}
void DRAWSEGMENT::Move( const wxPoint& aMoveVector )
{
// Move vector should not affect start/end for polygon since it will
// be applied directly to polygon outline.
if( m_Shape != S_POLYGON )
{
m_Start += aMoveVector;
m_End += aMoveVector;
}
switch ( m_Shape )
{
case S_POLYGON:
m_Poly.Move( VECTOR2I( aMoveVector ) );
break;
case S_CURVE:
m_BezierC1 += aMoveVector;
m_BezierC2 += aMoveVector;
for( wxPoint& pt : m_BezierPoints)
pt += aMoveVector;
break;
default:
break;
}
}
void DRAWSEGMENT::Scale( double aScale )
{
auto scalePt = [&]( wxPoint& pt )
{
pt.x = KiROUND( pt.x * aScale );
pt.y = KiROUND( pt.y * aScale );
};
int radius = GetRadius();
scalePt( m_Start );
scalePt( m_End );
// specific parameters:
switch( m_Shape )
{
case S_CURVE:
scalePt( m_BezierC1 );
scalePt( m_BezierC2 );
break;
case S_CIRCLE: // ring or circle
m_End.x = m_Start.x + KiROUND( radius * aScale );
m_End.y = m_Start.y;
break;
case S_POLYGON: // polygon
{
std::vector<wxPoint> pts;
for( const VECTOR2I& pt : m_Poly.Outline( 0 ).CPoints() )
{
pts.emplace_back( pt );
scalePt( pts.back() );
}
SetPolyPoints( pts );
}
break;
default:
break;
}
}
void DRAWSEGMENT::Rotate( const wxPoint& aRotCentre, double aAngle )
{
switch( m_Shape )
{
case S_ARC:
case S_SEGMENT:
case S_CIRCLE:
// these can all be done by just rotating the start and end points
RotatePoint( &m_Start, aRotCentre, aAngle);
RotatePoint( &m_End, aRotCentre, aAngle);
break;
case S_RECT:
if( KiROUND( aAngle ) % 900 == 0 )
{
RotatePoint( &m_Start, aRotCentre, aAngle );
RotatePoint( &m_End, aRotCentre, aAngle );
break;
}
// Convert non-cartesian-rotated rect to a diamond
m_Shape = S_POLYGON;
m_Poly.RemoveAllContours();
m_Poly.NewOutline();
m_Poly.Append( m_Start );
m_Poly.Append( m_End.x, m_Start.y );
m_Poly.Append( m_End );
m_Poly.Append( m_Start.x, m_End.y );
KI_FALLTHROUGH;
case S_POLYGON:
m_Poly.Rotate( -DECIDEG2RAD( aAngle ), VECTOR2I( aRotCentre ) );
break;
case S_CURVE:
RotatePoint( &m_Start, aRotCentre, aAngle);
RotatePoint( &m_End, aRotCentre, aAngle);
RotatePoint( &m_BezierC1, aRotCentre, aAngle);
RotatePoint( &m_BezierC2, aRotCentre, aAngle);
for( wxPoint& pt : m_BezierPoints )
RotatePoint( &pt, aRotCentre, aAngle);
break;
default:
// un-handled edge transform
wxASSERT_MSG( false, wxT( "DRAWSEGMENT::Rotate not implemented for "
+ ShowShape( m_Shape ) ) );
break;
}
}
void DRAWSEGMENT::Flip( const wxPoint& aCentre, bool aFlipLeftRight )
{
if( aFlipLeftRight )
{
m_Start.x = aCentre.x - ( m_Start.x - aCentre.x );
m_End.x = aCentre.x - ( m_End.x - aCentre.x );
}
else
{
m_Start.y = aCentre.y - ( m_Start.y - aCentre.y );
m_End.y = aCentre.y - ( m_End.y - aCentre.y );
}
switch ( m_Shape )
{
case S_ARC:
m_Angle = -m_Angle;
break;
case S_POLYGON:
m_Poly.Mirror( aFlipLeftRight, !aFlipLeftRight, VECTOR2I( aCentre ) );
break;
case S_CURVE:
{
if( aFlipLeftRight )
{
m_BezierC1.x = aCentre.x - ( m_BezierC1.x - aCentre.x );
m_BezierC2.x = aCentre.x - ( m_BezierC2.x - aCentre.x );
}
else
{
m_BezierC1.y = aCentre.y - ( m_BezierC1.y - aCentre.y );
m_BezierC2.y = aCentre.y - ( m_BezierC2.y - aCentre.y );
}
// Rebuild the poly points shape
std::vector<wxPoint> ctrlPoints = { m_Start, m_BezierC1, m_BezierC2, m_End };
BEZIER_POLY converter( ctrlPoints );
converter.GetPoly( m_BezierPoints, m_Width );
}
break;
default:
break;
}
// DRAWSEGMENT items are not allowed on copper layers, so
// copper layers count is not taken in account in Flip transform
SetLayer( FlipLayer( GetLayer() ) );
}
void DRAWSEGMENT::RebuildBezierToSegmentsPointsList( int aMinSegLen )
{
// Has meaning only for S_CURVE DRAW_SEGMENT shape
if( m_Shape != S_CURVE )
{
m_BezierPoints.clear();
return;
}
// Rebuild the m_BezierPoints vertex list that approximate the Bezier curve
std::vector<wxPoint> ctrlPoints = { m_Start, m_BezierC1, m_BezierC2, m_End };
BEZIER_POLY converter( ctrlPoints );
converter.GetPoly( m_BezierPoints, aMinSegLen );
}
const wxPoint DRAWSEGMENT::GetCenter() const
{
wxPoint c;
switch( m_Shape )
{
case S_ARC:
case S_CIRCLE:
c = m_Start;
break;
case S_SEGMENT:
// Midpoint of the line
c = ( GetStart() + GetEnd() ) / 2;
break;
case S_POLYGON:
case S_RECT:
case S_CURVE:
c = GetBoundingBox().Centre();
break;
default:
wxASSERT_MSG( false, "DRAWSEGMENT::GetCentre not implemented for shape"
+ ShowShape( GetShape() ) );
break;
}
return c;
}
const wxPoint DRAWSEGMENT::GetArcEnd() const
{
wxPoint endPoint( m_End ); // start of arc
switch( m_Shape )
{
case S_ARC:
// rotate the starting point of the arc, given by m_End, through the
// angle m_Angle to get the ending point of the arc.
// m_Start is the arc centre
endPoint = m_End; // m_End = start point of arc
RotatePoint( &endPoint, m_Start, -m_Angle );
break;
default:
break;
}
return endPoint; // after rotation, the end of the arc.
}
const wxPoint DRAWSEGMENT::GetArcMid() const
{
wxPoint endPoint( m_End );
switch( m_Shape )
{
case S_ARC:
// rotate the starting point of the arc, given by m_End, through half
// the angle m_Angle to get the middle of the arc.
// m_Start is the arc centre
endPoint = m_End; // m_End = start point of arc
RotatePoint( &endPoint, m_Start, -m_Angle / 2.0 );
break;
default:
break;
}
return endPoint; // after rotation, the end of the arc.
}
double DRAWSEGMENT::GetArcAngleStart() const
{
// due to the Y axis orient atan2 needs - y value
double angleStart = ArcTangente( GetArcStart().y - GetCenter().y,
GetArcStart().x - GetCenter().x );
// Normalize it to 0 ... 360 deg, to avoid discontinuity for angles near 180 deg
// because 180 deg and -180 are very near angles when ampping betewwen -180 ... 180 deg.
// and this is not easy to handle in calculations
NORMALIZE_ANGLE_POS( angleStart );
return angleStart;
}
void DRAWSEGMENT::SetAngle( double aAngle )
{
// m_Angle must be >= -360 and <= +360 degrees
m_Angle = NormalizeAngle360Max( aAngle );
}
MODULE* DRAWSEGMENT::GetParentModule() const
{
if( !m_Parent || m_Parent->Type() != PCB_MODULE_T )
return NULL;
return (MODULE*) m_Parent;
}
void DRAWSEGMENT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
EDA_UNITS units = aFrame->GetUserUnits();
wxString msg;
msg = _( "Drawing" );
aList.emplace_back( _( "Type" ), msg, DARKCYAN );
wxString shape = _( "Shape" );
switch( m_Shape )
{
case S_CIRCLE:
aList.emplace_back( shape, _( "Circle" ), RED );
msg = MessageTextFromValue( units, GetLineLength( m_Start, m_End ) );
aList.emplace_back( _( "Radius" ), msg, RED );
break;
case S_ARC:
aList.emplace_back( shape, _( "Arc" ), RED );
msg.Printf( wxT( "%.1f" ), m_Angle / 10.0 );
aList.emplace_back( _( "Angle" ), msg, RED );
msg = MessageTextFromValue( units, GetLineLength( m_Start, m_End ) );
aList.emplace_back( _( "Radius" ), msg, RED );
break;
case S_CURVE:
aList.emplace_back( shape, _( "Curve" ), RED );
msg = MessageTextFromValue( units, GetLength() );
aList.emplace_back( _( "Length" ), msg, DARKGREEN );
break;
case S_POLYGON:
aList.emplace_back( shape, _( "Polygon" ), RED );
msg.Printf( "%d", GetPolyShape().Outline(0).PointCount() );
aList.emplace_back( _( "Points" ), msg, DARKGREEN );
break;
case S_RECT:
aList.emplace_back( shape, _( "Rectangle" ), RED );
msg = MessageTextFromValue( units, std::abs( m_End.x - m_Start.x ) );
aList.emplace_back( _( "Width" ), msg, DARKGREEN );
msg = MessageTextFromValue( units, std::abs( m_End.y - m_Start.y ) );
aList.emplace_back( _( "Height" ), msg, DARKGREEN );
break;
case S_SEGMENT:
{
aList.emplace_back( shape, _( "Segment" ), RED );
msg = MessageTextFromValue( units, GetLineLength( m_Start, m_End ) );
aList.emplace_back( _( "Length" ), msg, DARKGREEN );
// angle counter-clockwise from 3'o-clock
const double deg = RAD2DEG( atan2( (double)( m_Start.y - m_End.y ),
(double)( m_End.x - m_Start.x ) ) );
msg.Printf( wxT( "%.1f" ), deg );
aList.emplace_back( _( "Angle" ), msg, DARKGREEN );
}
break;
default:
aList.emplace_back( shape, _( "Unrecognized" ), RED );
break;
}
if( m_Shape == S_POLYGON )
{
VECTOR2I point0 = GetPolyShape().Outline(0).CPoint(0);
wxString origin = wxString::Format( "@(%s, %s)",
MessageTextFromValue( units, point0.x ),
MessageTextFromValue( units, point0.y ) );
aList.emplace_back( _( "Origin" ), origin, DARKGREEN );
}
else
{
wxString start = wxString::Format( "@(%s, %s)",
MessageTextFromValue( units, GetStart().x ),
MessageTextFromValue( units, GetStart().y ) );
wxString end = wxString::Format( "@(%s, %s)",
MessageTextFromValue( units, GetEnd().x ),
MessageTextFromValue( units, GetEnd().y ) );
aList.emplace_back( start, end, DARKGREEN );
}
aList.emplace_back( _( "Layer" ), GetLayerName(), DARKBROWN );
msg = MessageTextFromValue( units, m_Width, true );
aList.emplace_back( _( "Width" ), msg, DARKCYAN );
}
const EDA_RECT DRAWSEGMENT::GetBoundingBox() const
{
EDA_RECT bbox;
bbox.SetOrigin( m_Start );
switch( m_Shape )
{
case S_RECT:
{
std::vector<wxPoint> pts;
GetRectCorners( &pts );
bbox = EDA_RECT(); // re-init for merging
for( wxPoint& pt : pts )
bbox.Merge( pt );
}
break;
case S_SEGMENT:
bbox.SetEnd( m_End );
break;
case S_CIRCLE:
bbox.Inflate( GetRadius() );
break;
case S_ARC:
computeArcBBox( bbox );
break;
case S_POLYGON:
if( m_Poly.IsEmpty() )
break;
{
MODULE* module = GetParentModule();
bbox = EDA_RECT(); // re-init for merging
for( auto iter = m_Poly.CIterate(); iter; iter++ )
{
wxPoint pt ( iter->x, iter->y );
if( module ) // Transform, if we belong to a module
{
RotatePoint( &pt, module->GetOrientation() );
pt += module->GetPosition();
}
bbox.Merge( pt );
}
}
break;
case S_CURVE:
bbox.Merge( m_BezierC1 );
bbox.Merge( m_BezierC2 );
bbox.Merge( m_End );
break;
default:
break;
}
bbox.Inflate( ((m_Width+1) / 2) + 1 );
bbox.Normalize();
return bbox;
}
bool DRAWSEGMENT::HitTest( const wxPoint& aPosition, int aAccuracy ) const
{
int maxdist = aAccuracy + ( m_Width / 2 );
switch( m_Shape )
{
case S_CIRCLE:
{
int radius = GetRadius();
int dist = KiROUND( EuclideanNorm( aPosition - GetCenter() ) );
if( m_Width == 0 )
{
// Filled circle hit-test
if( dist <= radius + maxdist )
return true;
}
if( m_Width > 0 )
{
// Ring hit-test
if( abs( radius - dist ) <= maxdist )
return true;
}
}
break;
case S_ARC:
{
wxPoint relPos = aPosition - GetCenter();
int radius = GetRadius();
int dist = KiROUND( EuclideanNorm( relPos ) );
if( abs( radius - dist ) <= maxdist )
{
// For arcs, the test point angle must be >= arc angle start
// and <= arc angle end
// However angle values > 360 deg are not easy to handle
// so we calculate the relative angle between arc start point and teast point
// this relative arc should be < arc angle if arc angle > 0 (CW arc)
// and > arc angle if arc angle < 0 (CCW arc)
double arc_angle_start = GetArcAngleStart(); // Always 0.0 ... 360 deg, in 0.1 deg
double arc_hittest = ArcTangente( relPos.y, relPos.x );
// Calculate relative angle between the starting point of the arc, and the test point
arc_hittest -= arc_angle_start;
// Normalise arc_hittest between 0 ... 360 deg
NORMALIZE_ANGLE_POS( arc_hittest );
// Check angle: inside the arc angle when it is > 0
// and outside the not drawn arc when it is < 0
if( GetAngle() >= 0.0 )
{
if( arc_hittest <= GetAngle() )
return true;
}
else
{
if( arc_hittest >= (3600.0 + GetAngle()) )
return true;
}
}
}
break;
case S_CURVE:
((DRAWSEGMENT*)this)->RebuildBezierToSegmentsPointsList( m_Width );
for( unsigned int i= 1; i < m_BezierPoints.size(); i++)
{
if( TestSegmentHit( aPosition, m_BezierPoints[i-1], m_BezierPoints[i], maxdist ) )
return true;
}
break;
case S_SEGMENT:
if( TestSegmentHit( aPosition, m_Start, m_End, maxdist ) )
return true;
break;
case S_RECT:
{
std::vector<wxPoint> pts;
GetRectCorners( &pts );
if( m_Width == 0 )
{
SHAPE_POLY_SET poly;
poly.NewOutline();
for( const wxPoint& pt : pts )
poly.Append( pt );
if( poly.Collide( VECTOR2I( aPosition ), maxdist ) )
return true;
}
if( m_Width > 0 )
{
if( TestSegmentHit( aPosition, pts[0], pts[1], maxdist )
|| TestSegmentHit( aPosition, pts[1], pts[2], maxdist )
|| TestSegmentHit( aPosition, pts[2], pts[3], maxdist )
|| TestSegmentHit( aPosition, pts[3], pts[0], maxdist ) )
{
return true;
}
}
}
break;
case S_POLYGON:
{
if( !IsPolygonFilled() )
{
SHAPE_POLY_SET::VERTEX_INDEX dummy;
return m_Poly.CollideEdge( VECTOR2I( aPosition ), dummy, maxdist );
}
else
return m_Poly.Collide( VECTOR2I( aPosition ), maxdist );
}
break;
default:
wxASSERT_MSG( 0, wxString::Format( "unknown DRAWSEGMENT shape: %d", m_Shape ) );
break;
}
return false;
}
bool DRAWSEGMENT::HitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const
{
EDA_RECT arect = aRect;
arect.Normalize();
arect.Inflate( aAccuracy );
EDA_RECT arcRect;
EDA_RECT bb = GetBoundingBox();
switch( m_Shape )
{
case S_CIRCLE:
// Test if area intersects or contains the circle:
if( aContained )
return arect.Contains( bb );
else
{
// If the rectangle does not intersect the bounding box, this is a much quicker test
if( !aRect.Intersects( bb ) )
{
return false;
}
else
{
return arect.IntersectsCircleEdge( GetCenter(), GetRadius(), GetWidth() );
}
}
break;
case S_ARC:
// Test for full containment of this arc in the rect
if( aContained )
{
return arect.Contains( bb );
}
// Test if the rect crosses the arc
else
{
arcRect = bb.Common( arect );
/* All following tests must pass:
* 1. Rectangle must intersect arc BoundingBox
* 2. Rectangle must cross the outside of the arc
*/
return arcRect.Intersects( arect ) &&
arcRect.IntersectsCircleEdge( GetCenter(), GetRadius(), GetWidth() );
}
break;
case S_RECT:
if( aContained )
{
return arect.Contains( bb );
}
else
{
std::vector<wxPoint> pts;
GetRectCorners( &pts );
// Account for the width of the lines
arect.Inflate( GetWidth() / 2 );
return ( arect.Intersects( pts[0], pts[1] )
|| arect.Intersects( pts[1], pts[2] )
|| arect.Intersects( pts[2], pts[3] )
|| arect.Intersects( pts[3], pts[0] ) );
}
break;
case S_SEGMENT:
if( aContained )
{
return arect.Contains( GetStart() ) && aRect.Contains( GetEnd() );
}
else
{
// Account for the width of the line
arect.Inflate( GetWidth() / 2 );
return arect.Intersects( GetStart(), GetEnd() );
}
break;
case S_POLYGON:
if( aContained )
{
return arect.Contains( bb );
}
else
{
// Fast test: if aRect is outside the polygon bounding box,
// rectangles cannot intersect
if( !arect.Intersects( bb ) )
return false;
// Account for the width of the line
arect.Inflate( GetWidth() / 2 );
int count = m_Poly.TotalVertices();
for( int ii = 0; ii < count; ii++ )
{
auto vertex = m_Poly.CVertex( ii );
auto vertexNext = m_Poly.CVertex( ( ii + 1 ) % count );
// Test if the point is within aRect
if( arect.Contains( ( wxPoint ) vertex ) )
return true;
// Test if this edge intersects aRect
if( arect.Intersects( ( wxPoint ) vertex, ( wxPoint ) vertexNext ) )
return true;
}
}
break;
case S_CURVE: // not yet handled
if( aContained )
{
return arect.Contains( bb );
}
else
{
// Fast test: if aRect is outside the polygon bounding box,
// rectangles cannot intersect
if( !arect.Intersects( bb ) )
return false;
// Account for the width of the line
arect.Inflate( GetWidth() / 2 );
unsigned count = m_BezierPoints.size();
for( unsigned ii = 1; ii < count; ii++ )
{
wxPoint vertex = m_BezierPoints[ii-1];
wxPoint vertexNext = m_BezierPoints[ii];
// Test if the point is within aRect
if( arect.Contains( ( wxPoint ) vertex ) )
return true;
// Test if this edge intersects aRect
if( arect.Intersects( vertex, vertexNext ) )
return true;
}
}
break;
default:
wxASSERT_MSG( 0, wxString::Format( "unknown DRAWSEGMENT shape: %d", m_Shape ) );
break;
}
return false;
}
wxString DRAWSEGMENT::GetSelectMenuText( EDA_UNITS aUnits ) const
{
return wxString::Format( _( "Pcb Graphic %s on %s" ),
ShowShape( m_Shape ),
GetLayerName() );
}
BITMAP_DEF DRAWSEGMENT::GetMenuImage() const
{
return add_dashed_line_xpm;
}
EDA_ITEM* DRAWSEGMENT::Clone() const
{
return new DRAWSEGMENT( *this );
}
const BOX2I DRAWSEGMENT::ViewBBox() const
{
// For arcs - do not include the center point in the bounding box,
// it is redundant for displaying an arc
if( m_Shape == S_ARC )
{
EDA_RECT bbox;
bbox.SetOrigin( m_End );
computeArcBBox( bbox );
return BOX2I( bbox.GetOrigin(), bbox.GetSize() );
}
return EDA_ITEM::ViewBBox();
}
void DRAWSEGMENT::GetRectCorners( std::vector<wxPoint>* pts ) const
{
MODULE* module = GetParentModule();
wxPoint topLeft = GetStart();
wxPoint botRight = GetEnd();
// Un-rotate rect topLeft and botRight
if( module && KiROUND( module->GetOrientation() ) % 900 != 0 )
{
topLeft -= module->GetPosition();
RotatePoint( &topLeft, -module->GetOrientation() );
botRight -= module->GetPosition();
RotatePoint( &botRight, -module->GetOrientation() );
}
// Set up the un-rotated 4 corners
pts->emplace_back( topLeft );
pts->emplace_back( botRight.x, topLeft.y );
pts->emplace_back( botRight );
pts->emplace_back( topLeft.x, botRight.y );
// Now re-rotate the 4 corners to get a diamond
if( module && KiROUND( module->GetOrientation() ) % 900 != 0 )
{
for( wxPoint& pt : *pts )
{
RotatePoint( &pt,module->GetOrientation() );
pt += module->GetPosition();
}
}
}
void DRAWSEGMENT::computeArcBBox( EDA_RECT& aBBox ) const
{
// Do not include the center, which is not necessarily
// inside the BB of a arc with a small angle
aBBox.SetOrigin( m_End );
wxPoint end = m_End;
RotatePoint( &end, m_Start, -m_Angle );
aBBox.Merge( end );
// Determine the starting quarter
// 0 right-bottom
// 1 left-bottom
// 2 left-top
// 3 right-top
unsigned int quarter = 0; // assume right-bottom
if( m_End.x < m_Start.x )
{
if( m_End.y <= m_Start.y )
quarter = 2;
else // ( m_End.y > m_Start.y )
quarter = 1;
}
else if( m_End.x >= m_Start.x )
{
if( m_End.y < m_Start.y )
quarter = 3;
else if( m_End.x == m_Start.x )
quarter = 1;
}
int radius = GetRadius();
int angle = (int) GetArcAngleStart() % 900 + m_Angle;
bool directionCW = ( m_Angle > 0 ); // Is the direction of arc clockwise?
// Make the angle positive, so we go clockwise and merge points belonging to the arc
if( !directionCW )
{
angle = 900 - angle;
quarter = ( quarter + 3 ) % 4; // -1 modulo arithmetic
}
while( angle > 900 )
{
switch( quarter )
{
case 0: aBBox.Merge( wxPoint( m_Start.x, m_Start.y + radius ) ); break; // down
case 1: aBBox.Merge( wxPoint( m_Start.x - radius, m_Start.y ) ); break; // left
case 2: aBBox.Merge( wxPoint( m_Start.x, m_Start.y - radius ) ); break; // up
case 3: aBBox.Merge( wxPoint( m_Start.x + radius, m_Start.y ) ); break; // right
}
if( directionCW )
++quarter;
else
quarter += 3; // -1 modulo arithmetic
quarter %= 4;
angle -= 900;
}
}
void DRAWSEGMENT::SetPolyPoints( const std::vector<wxPoint>& aPoints )
{
m_Poly.RemoveAllContours();
m_Poly.NewOutline();
for ( const wxPoint& p : aPoints )
m_Poly.Append( p.x, p.y );
}
const std::vector<wxPoint> DRAWSEGMENT::BuildPolyPointsList() const
{
std::vector<wxPoint> rv;
if( m_Poly.OutlineCount() )
{
if( m_Poly.COutline( 0 ).PointCount() )
{
for ( auto iter = m_Poly.CIterate(); iter; iter++ )
rv.emplace_back( iter->x, iter->y );
}
}
return rv;
}
bool DRAWSEGMENT::IsPolyShapeValid() const
{
// return true if the polygonal shape is valid (has more than 2 points)
if( GetPolyShape().OutlineCount() == 0 )
return false;
const SHAPE_LINE_CHAIN& outline = ((SHAPE_POLY_SET&)GetPolyShape()).Outline( 0 );
return outline.PointCount() > 2;
}
int DRAWSEGMENT::GetPointCount() const
{
// return the number of corners of the polygonal shape
// this shape is expected to be only one polygon without hole
if( GetPolyShape().OutlineCount() )
return GetPolyShape().VertexCount( 0 );
return 0;
}
void DRAWSEGMENT::SwapData( BOARD_ITEM* aImage )
{
DRAWSEGMENT* image = dynamic_cast<DRAWSEGMENT*>( aImage );
assert( image );
std::swap( m_Width, image->m_Width );
std::swap( m_Start, image->m_Start );
std::swap( m_End, image->m_End );
std::swap( m_Shape, image->m_Shape );
std::swap( m_Type, image->m_Type );
std::swap( m_Angle, image->m_Angle );
std::swap( m_BezierC1, image->m_BezierC1 );
std::swap( m_BezierC2, image->m_BezierC2 );
std::swap( m_BezierPoints, image->m_BezierPoints );
std::swap( m_Poly, image->m_Poly );
}
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