kicad/pcbnew/router/pns_solid.cpp

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2014 CERN
* Copyright (C) 2016-2020 KiCad Developers, see AUTHORS.txt for contributors.
* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
* 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 3 of the License, or (at your
* option) any later version.
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*
* 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.
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*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math/vector2d.h>
#include <geometry/shape.h>
#include <geometry/shape_line_chain.h>
#include <geometry/shape_rect.h>
#include <geometry/shape_circle.h>
#include <geometry/shape_simple.h>
#include <geometry/shape_compound.h>
#include "pns_router.h"
#include "pns_solid.h"
#include "pns_utils.h"
namespace PNS {
static const SHAPE_LINE_CHAIN buildHullForPrimitiveShape( const SHAPE* aShape, int aClearance, int aWalkaroundThickness )
{
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int cl = aClearance + ( aWalkaroundThickness + 1 )/ 2;
switch( aShape->Type() )
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{
case SH_RECT:
{
const SHAPE_RECT* rect = static_cast<const SHAPE_RECT*>( aShape );
return OctagonalHull( rect->GetPosition(), rect->GetSize(), cl + 1, 0.2 * cl );
}
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case SH_CIRCLE:
{
const SHAPE_CIRCLE* circle = static_cast<const SHAPE_CIRCLE*>( aShape );
int r = circle->GetRadius();
return OctagonalHull( circle->GetCenter() - VECTOR2I( r, r ), VECTOR2I( 2 * r, 2 * r ),
cl + 1, 0.52 * ( r + cl ) );
}
case SH_SEGMENT:
{
const SHAPE_SEGMENT* seg = static_cast<const SHAPE_SEGMENT*>( aShape );
return SegmentHull( *seg, aClearance, aWalkaroundThickness );
}
case SH_SIMPLE:
{
const SHAPE_SIMPLE* convex = static_cast<const SHAPE_SIMPLE*>( aShape );
return ConvexHull( *convex, cl );
}
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default:
{
wxLogError("Unsupported hull shape: %d", aShape->Type() );
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break;
}
}
return SHAPE_LINE_CHAIN();
}
const SHAPE_LINE_CHAIN SOLID::Hull( int aClearance, int aWalkaroundThickness, int aLayer ) const
{
SHAPE* shape = m_shape;
if( !ROUTER::GetInstance()->GetInterface()->IsOnLayer( this, aLayer ) )
{
/// The alternate shape is defined for THT pads. If we don't have an alternate shape
/// then the solid shape does not exist on this layer
if( !m_alternateShape )
return SHAPE_LINE_CHAIN();
shape = m_alternateShape;
}
if( shape->Type() == SH_COMPOUND )
{
auto cmpnd = static_cast<SHAPE_COMPOUND*>( shape );
if ( cmpnd->Shapes().size() == 1 )
{
return buildHullForPrimitiveShape( cmpnd->Shapes()[0], aClearance, aWalkaroundThickness );
}
else
{
// fixme - shouldn't happen but one day we should move TransformShapeWithClearanceToPolygon()
// to the Geometry Library
return SHAPE_LINE_CHAIN();
}
}
else
{
return buildHullForPrimitiveShape( shape, aClearance, aWalkaroundThickness );
}
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return SHAPE_LINE_CHAIN();
}
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ITEM* SOLID::Clone() const
{
ITEM* solid = new SOLID( *this );
return solid;
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}
void SOLID::SetPos( const VECTOR2I& aCenter )
{
auto delta = aCenter - m_pos;
if( m_shape )
m_shape->Move( delta );
m_pos = aCenter;
}
}