kicad/pcbnew/router/pns_dragger.cpp

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2014 CERN
* Copyright (C) 2016 KiCad Developers, see AUTHORS.txt for contributors.
* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "pns_dragger.h"
#include "pns_shove.h"
#include "pns_router.h"
namespace PNS {
DRAGGER::DRAGGER( ROUTER* aRouter ) :
ALGO_BASE( aRouter )
{
m_world = NULL;
m_lastNode = NULL;
m_mode = DM_SEGMENT;
m_draggedSegmentIndex = 0;
m_dragStatus = false;
m_currentMode = RM_MarkObstacles;
m_freeAngleMode = false;
}
DRAGGER::~DRAGGER()
{
}
void DRAGGER::SetWorld( NODE* aWorld )
{
m_world = aWorld;
}
bool DRAGGER::startDragSegment( const VECTOR2D& aP, SEGMENT* aSeg )
{
int w2 = aSeg->Width() / 2;
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m_draggedLine = m_world->AssembleLine( aSeg, &m_draggedSegmentIndex );
if( m_shove )
{
m_shove->SetInitialLine( m_draggedLine );
}
auto distA = ( aP - aSeg->Seg().A ).EuclideanNorm();
auto distB = ( aP - aSeg->Seg().B ).EuclideanNorm();
if( distA <= w2 )
{
m_mode = DM_CORNER;
}
else if( distB <= w2 )
{
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m_draggedSegmentIndex++;
m_mode = DM_CORNER;
}
else if ( m_freeAngleMode )
{
if( distB < distA )
{
m_draggedSegmentIndex++;
}
m_mode = DM_CORNER;
}
else
{
m_mode = DM_SEGMENT;
}
return true;
}
bool DRAGGER::startDragVia( VIA* aVia )
{
m_initialVia = aVia->MakeHandle();
m_draggedVia = m_initialVia;
m_mode = DM_VIA;
return true;
}
const ITEM_SET DRAGGER::findViaFanoutByHandle ( NODE *aNode, const VIA_HANDLE& handle )
{
ITEM_SET rv;
JOINT* jt = aNode->FindJoint( handle.pos, handle.layers.Start(), handle.net );
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if( !jt )
return rv;
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for( ITEM* item : jt->LinkList() )
{
if( item->OfKind( ITEM::SEGMENT_T ) )
{
int segIndex;
SEGMENT* seg = ( SEGMENT*) item;
LINE l = aNode->AssembleLine( seg, &segIndex );
if( segIndex != 0 )
l.Reverse();
rv.Add( l );
} else if ( item->OfKind( ITEM::VIA_T ))
{
rv.Add( item );
}
}
return rv;
}
bool DRAGGER::Start( const VECTOR2I& aP, ITEM* aStartItem )
{
m_lastNode = NULL;
m_draggedItems.Clear();
m_currentMode = Settings().Mode();
m_freeAngleMode = (m_mode & DM_FREE_ANGLE);
if( m_currentMode != RM_MarkObstacles && !m_freeAngleMode )
m_shove = std::make_unique<SHOVE>( m_world, Router() );
aStartItem->Unmark( MK_LOCKED );
wxLogTrace( "PNS", "StartDragging: item %p [kind %d]", aStartItem, (int) aStartItem->Kind() );
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switch( aStartItem->Kind() )
{
case ITEM::SEGMENT_T:
return startDragSegment( aP, static_cast<SEGMENT*>( aStartItem ) );
case ITEM::VIA_T:
return startDragVia( static_cast<VIA*>( aStartItem ) );
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default:
return false;
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}
}
void DRAGGER::SetMode( int aMode )
{
m_mode = aMode;
}
bool DRAGGER::dragMarkObstacles( const VECTOR2I& aP )
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{
// fixme: rewrite using shared_ptr...
if( m_lastNode )
{
delete m_lastNode;
m_lastNode = nullptr;
}
m_lastNode = m_world->Branch();
switch( m_mode )
{
case DM_SEGMENT:
case DM_CORNER:
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{
int thresh = Settings().SmoothDraggedSegments() ? m_draggedLine.Width() / 4 : 0;
LINE origLine( m_draggedLine );
LINE dragged( m_draggedLine );
dragged.ClearSegmentLinks();
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if( m_mode == DM_SEGMENT )
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dragged.DragSegment( aP, m_draggedSegmentIndex, thresh );
else
dragged.DragCorner( aP, m_draggedSegmentIndex, thresh, m_freeAngleMode );
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m_lastNode->Remove( origLine );
m_lastNode->Add( dragged );
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m_draggedItems.Clear();
m_draggedItems.Add( dragged );
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break;
}
case DM_VIA: // fixme...
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{
dumbDragVia( m_initialVia, m_lastNode, aP );
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break;
}
}
if( Settings().CanViolateDRC() )
m_dragStatus = true;
else
m_dragStatus = !m_world->CheckColliding( m_draggedItems );
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return true;
}
void DRAGGER::dumbDragVia( const VIA_HANDLE& aHandle, NODE* aNode, const VECTOR2I& aP )
{
m_draggedItems.Clear();
ITEM_SET fanout = findViaFanoutByHandle( aNode, aHandle );
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if( fanout.Empty() )
{
return;
}
for( ITEM* item : fanout.Items() )
{
if( const LINE* l = dyn_cast<const LINE*>( item ) )
{
LINE origLine( *l );
LINE draggedLine( *l );
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draggedLine.DragCorner( aP, origLine.CLine().Find( aHandle.pos ), 0, m_freeAngleMode );
draggedLine.ClearSegmentLinks();
m_draggedItems.Add( draggedLine );
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m_lastNode->Remove( origLine );
m_lastNode->Add( draggedLine );
}
else if ( VIA *via = dyn_cast<VIA*>( item ) )
{
auto nvia = Clone( *via );
nvia->SetPos( aP );
m_draggedItems.Add( nvia.get() );
m_lastNode->Remove( via );
m_lastNode->Add( std::move( nvia ) );
}
}
}
bool DRAGGER::dragShove( const VECTOR2I& aP )
{
bool ok = false;
if( m_lastNode )
{
delete m_lastNode;
m_lastNode = NULL;
}
switch( m_mode )
{
case DM_SEGMENT:
case DM_CORNER:
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{
int thresh = Settings().SmoothDraggedSegments() ? m_draggedLine.Width() / 4 : 0;
LINE dragged( m_draggedLine );
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if( m_mode == DM_SEGMENT )
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dragged.DragSegment( aP, m_draggedSegmentIndex, thresh );
else
dragged.DragCorner( aP, m_draggedSegmentIndex, thresh );
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SHOVE::SHOVE_STATUS st = m_shove->ShoveLines( dragged );
if( st == SHOVE::SH_OK )
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ok = true;
else if( st == SHOVE::SH_HEAD_MODIFIED )
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{
dragged = m_shove->NewHead();
ok = true;
}
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m_lastNode = m_shove->CurrentNode()->Branch();
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if( ok )
{
dragged.ClearSegmentLinks();
dragged.Unmark();
m_lastNode->Add( dragged );
m_draggedItems.Clear();
m_draggedItems.Add( dragged );
}
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break;
}
case DM_VIA:
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{
VIA_HANDLE newVia;
SHOVE::SHOVE_STATUS st = m_shove->ShoveDraggingVia( m_draggedVia, aP, newVia );
if( st == SHOVE::SH_OK || st == SHOVE::SH_HEAD_MODIFIED )
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ok = true;
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m_lastNode = m_shove->CurrentNode()->Branch();
if( newVia.valid )
m_draggedVia = newVia;
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m_draggedItems.Clear();
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break;
}
}
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m_dragStatus = ok;
return ok;
}
bool DRAGGER::FixRoute()
{
NODE* node = CurrentNode();
if( node )
{
// Collisions still prevent fixing unless "Allow DRC violations" is checked
if( !m_dragStatus )
return false;
Router()->CommitRouting( node );
return true;
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}
return false;
}
bool DRAGGER::Drag( const VECTOR2I& aP )
{
if( m_freeAngleMode )
return dragMarkObstacles( aP );
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switch( m_currentMode )
{
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case RM_MarkObstacles:
return dragMarkObstacles( aP );
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case RM_Shove:
case RM_Walkaround:
case RM_Smart:
return dragShove( aP );
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default:
return false;
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}
}
NODE* DRAGGER::CurrentNode() const
{
return m_lastNode;
}
const ITEM_SET DRAGGER::Traces()
{
return m_draggedItems;
}
LOGGER* DRAGGER::Logger()
{
if( m_shove )
return m_shove->Logger();
return NULL;
}
}