mirror of
https://gitlab.com/kicad/code/kicad.git
synced 2024-11-24 00:34:47 +00:00
105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2017 Kicad Developers, see change_log.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 <preview_items/centreline_rect_item.h>
|
|
#include <preview_items/two_point_geom_manager.h>
|
|
#include <gal/graphics_abstraction_layer.h>
|
|
#include <view/view.h>
|
|
#include <trigo.h>
|
|
|
|
using namespace KIGFX::PREVIEW;
|
|
|
|
static SHAPE_POLY_SET getRectangleAlongCentreLine( const VECTOR2D& aClStart,
|
|
const VECTOR2D& aClEnd, double aAspect )
|
|
{
|
|
SHAPE_POLY_SET poly;
|
|
poly.NewOutline();
|
|
|
|
/*
|
|
* The point layout of the rectangle goes like this,
|
|
* but start/end don't have to be horz/vert
|
|
*
|
|
* 0 ---------------- 1 -----
|
|
* | | ^
|
|
* s--------cl------->e |cl|/aspect
|
|
* | | v
|
|
* 3----------------- 2 -----
|
|
*/
|
|
|
|
// vector down the centre line of the rectangle
|
|
VECTOR2D cl = aClEnd - aClStart;
|
|
|
|
// don't allow degenerate polygons
|
|
if( cl.x == 0 && cl.y == 0 )
|
|
cl.x = 1.0;
|
|
|
|
// the "side" of the rectangle is the centre line rotated by 90 deg
|
|
// and scaled by the aspect ratio
|
|
VECTOR2D side = cl;
|
|
RotatePoint( side, -ANGLE_90 );
|
|
side = side * aAspect;
|
|
|
|
VECTOR2D pt = aClStart + ( side / 2.0 );
|
|
poly.Append( pt );
|
|
|
|
pt += cl;
|
|
poly.Append( pt );
|
|
|
|
pt -= side;
|
|
poly.Append( pt );
|
|
|
|
pt -= cl;
|
|
poly.Append( pt );
|
|
|
|
return poly;
|
|
}
|
|
|
|
|
|
CENTRELINE_RECT_ITEM::CENTRELINE_RECT_ITEM( const TWO_POINT_GEOMETRY_MANAGER& aGeomMgr,
|
|
double aAspect ) :
|
|
m_geomMgr( aGeomMgr ),
|
|
m_aspect( aAspect )
|
|
{
|
|
}
|
|
|
|
|
|
SHAPE_POLY_SET CENTRELINE_RECT_ITEM::getOutline() const
|
|
{
|
|
return getRectangleAlongCentreLine( m_geomMgr.GetOrigin(), m_geomMgr.GetEnd(), m_aspect );
|
|
}
|
|
|
|
|
|
const BOX2I CENTRELINE_RECT_ITEM::ViewBBox() const
|
|
{
|
|
return getOutline().BBox();
|
|
}
|
|
|
|
|
|
void CENTRELINE_RECT_ITEM::drawPreviewShape( KIGFX::VIEW* aView ) const
|
|
{
|
|
KIGFX::GAL& gal = *aView->GetGAL();
|
|
|
|
gal.DrawLine( m_geomMgr.GetOrigin(), m_geomMgr.GetEnd() );
|
|
gal.DrawPolygon( getOutline() );
|
|
}
|