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kicad/pcbnew/router/pns_router.cpp

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2014 CERN
* Copyright (C) 2016-2021 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 <cstdio>
#include <memory>
#include <vector>
#include <view/view.h>
#include <view/view_group.h>
#include <gal/graphics_abstraction_layer.h>
#include <settings/settings_manager.h>
#include <pcb_painter.h>
#include <pcbnew_settings.h>
#include <pad.h>
#include <zone.h>
#include <geometry/shape.h>
#include "pns_node.h"
#include "pns_line_placer.h"
#include "pns_line.h"
#include "pns_solid.h"
#include "pns_utils.h"
#include "pns_router.h"
#include "pns_shove.h"
#include "pns_dragger.h"
#include "pns_component_dragger.h"
#include "pns_topology.h"
#include "pns_diff_pair_placer.h"
#include "pns_meander_placer.h"
#include "pns_meander_skew_placer.h"
#include "pns_dp_meander_placer.h"
namespace PNS {
// an ugly singleton for drawing debug items within the router context.
// To be fixed sometime in the future.
static ROUTER* theRouter;
ROUTER::ROUTER()
{
theRouter = this;
m_state = IDLE;
m_mode = PNS_MODE_ROUTE_SINGLE;
m_logger = new LOGGER;
// Initialize all other variables:
m_lastNode = nullptr;
m_iterLimit = 0;
m_settings = nullptr;
m_iface = nullptr;
m_visibleViewArea.SetMaximum();
}
ROUTER* ROUTER::GetInstance()
{
return theRouter;
}
ROUTER::~ROUTER()
{
ClearWorld();
theRouter = nullptr;
delete m_logger;
}
void ROUTER::SyncWorld()
{
ClearWorld();
m_world = std::make_unique<NODE>( );
m_iface->SyncWorld( m_world.get() );
m_world->FixupVirtualVias();
}
void ROUTER::ClearWorld()
{
if( m_world )
{
m_world->KillChildren();
m_world.reset();
}
m_placer.reset();
}
bool ROUTER::RoutingInProgress() const
{
return m_state != IDLE;
}
const ITEM_SET ROUTER::QueryHoverItems( const VECTOR2I& aP, bool aUseClearance )
{
if( m_state == IDLE || m_placer == nullptr )
{
if( aUseClearance )
{
SEGMENT test( SEG( aP, aP ), -1 );
test.SetWidth( 1 );
test.SetLayers( LAYER_RANGE::All() );
NODE::OBSTACLES obs;
m_world->QueryColliding( &test, obs, ITEM::ANY_T, -1, false );
PNS::ITEM_SET ret;
for( OBSTACLE& obstacle : obs )
ret.Add( obstacle.m_item, false );
return ret;
}
else
{
return m_world->HitTest( aP );
}
}
else
return m_placer->CurrentNode()->HitTest( aP );
}
bool ROUTER::StartDragging( const VECTOR2I& aP, ITEM* aItem, int aDragMode )
{
return StartDragging( aP, ITEM_SET( aItem ), aDragMode );
}
bool ROUTER::StartDragging( const VECTOR2I& aP, ITEM_SET aStartItems, int aDragMode )
{
if( aStartItems.Empty() )
return false;
if( aStartItems.Count( ITEM::SOLID_T ) == aStartItems.Size() )
{
m_dragger = std::make_unique<COMPONENT_DRAGGER>( this );
m_forceMarkObstaclesMode = true;
m_state = DRAG_COMPONENT;
}
else
{
if( aDragMode & DM_FREE_ANGLE )
m_forceMarkObstaclesMode = true;
else
m_forceMarkObstaclesMode = false;
m_dragger = std::make_unique<DRAGGER>( this );
m_state = DRAG_SEGMENT;
}
m_dragger->SetMode( aDragMode );
m_dragger->SetWorld( m_world.get() );
m_dragger->SetLogger( m_logger );
m_dragger->SetDebugDecorator( m_iface->GetDebugDecorator() );
if( m_logger )
m_logger->Clear();
if( m_logger && aStartItems.Size() )
{
m_logger->Log( LOGGER::EVT_START_DRAG, aP, aStartItems[0] );
}
if( m_dragger->Start( aP, aStartItems ) )
{
return true;
}
else
{
m_dragger.reset();
m_state = IDLE;
return false;
}
}
bool ROUTER::isStartingPointRoutable( const VECTOR2I& aWhere, ITEM* aStartItem, int aLayer )
{
if( Settings().AllowDRCViolations() )
return true;
if( m_mode == PNS_MODE_ROUTE_DIFF_PAIR )
{
if( m_sizes.DiffPairGap() < m_sizes.MinClearance() )
{
SetFailureReason( _( "Diff pair gap is less than board minimum clearance." ) );
return false;
}
}
ITEM_SET candidates = QueryHoverItems( aWhere );
for( ITEM* item : candidates.Items() )
{
if( item->Parent() && item->Parent()->GetLayer() == Edge_Cuts )
{
// Edge cuts are put on all layers, but they're not *really* on all layers
continue;
}
if( !item->IsRoutable() && item->Layers().Overlaps( aLayer ) )
{
BOARD_ITEM* parent = item->Parent();
switch( parent->Type() )
{
case PCB_PAD_T:
{
PAD* pad = static_cast<PAD*>( parent );
if( pad->GetAttribute() == PAD_ATTRIB::NPTH )
SetFailureReason( _( "Cannot start routing from a non-plated hole." ) );
}
break;
case PCB_ZONE_T:
case PCB_FP_ZONE_T:
{
ZONE* zone = static_cast<ZONE*>( parent );
if( !zone->GetZoneName().IsEmpty() )
{
SetFailureReason( wxString::Format( _( "Rule area '%s' disallows tracks." ),
zone->GetZoneName() ) );
}
else
{
SetFailureReason( _( "Rule area disallows tracks." ) );
}
}
break;
case PCB_TEXT_T:
case PCB_FP_TEXT_T:
SetFailureReason( _( "Cannot start routing from a text item." ) );
break;
case PCB_SHAPE_T:
case PCB_FP_SHAPE_T:
SetFailureReason( _( "Cannot start routing from a graphic." ) );
default:
break;
}
return false;
}
}
VECTOR2I startPoint = aWhere;
if( m_mode == PNS_MODE_ROUTE_SINGLE )
{
SHAPE_LINE_CHAIN dummyStartSeg;
LINE dummyStartLine;
dummyStartSeg.Append( startPoint );
dummyStartSeg.Append( startPoint, true );
dummyStartLine.SetShape( dummyStartSeg );
dummyStartLine.SetLayer( aLayer );
dummyStartLine.SetNet( aStartItem ? aStartItem->Net() : 0 );
dummyStartLine.SetWidth( m_sizes.TrackWidth() );
if( m_world->CheckColliding( &dummyStartLine, ITEM::ANY_T ) )
{
ITEM_SET dummyStartSet( &dummyStartLine );
NODE::ITEM_VECTOR highlightedItems;
markViolations( m_world.get(), dummyStartSet, highlightedItems );
for( ITEM* item : highlightedItems )
m_iface->HideItem( item );
SetFailureReason( _( "The routing start point violates DRC." ) );
return false;
}
}
else if( m_mode == PNS_MODE_ROUTE_DIFF_PAIR )
{
if( !aStartItem )
{
SetFailureReason( _( "Cannot start a differential pair in the middle of nowhere." ) );
return false;
}
DP_PRIMITIVE_PAIR dpPair;
wxString errorMsg;
if( !DIFF_PAIR_PLACER::FindDpPrimitivePair( m_world.get(), startPoint, aStartItem, dpPair,
&errorMsg ) )
{
SetFailureReason( errorMsg );
return false;
}
SHAPE_LINE_CHAIN dummyStartSegA;
SHAPE_LINE_CHAIN dummyStartSegB;
LINE dummyStartLineA;
LINE dummyStartLineB;
dummyStartSegA.Append( dpPair.AnchorN() );
dummyStartSegA.Append( dpPair.AnchorN(), true );
dummyStartSegB.Append( dpPair.AnchorP() );
dummyStartSegB.Append( dpPair.AnchorP(), true );
dummyStartLineA.SetShape( dummyStartSegA );
dummyStartLineA.SetLayer( aLayer );
dummyStartLineA.SetNet( dpPair.PrimN()->Net() );
dummyStartLineA.SetWidth( m_sizes.DiffPairWidth() );
dummyStartLineB.SetShape( dummyStartSegB );
dummyStartLineB.SetLayer( aLayer );
dummyStartLineB.SetNet( dpPair.PrimP()->Net() );
dummyStartLineB.SetWidth( m_sizes.DiffPairWidth() );
if( m_world->CheckColliding( &dummyStartLineA, ITEM::ANY_T )
|| m_world->CheckColliding( &dummyStartLineB, ITEM::ANY_T ) )
{
ITEM_SET dummyStartSet;
NODE::ITEM_VECTOR highlightedItems;
dummyStartSet.Add( dummyStartLineA );
dummyStartSet.Add( dummyStartLineB );
markViolations( m_world.get(), dummyStartSet, highlightedItems );
for( ITEM* item : highlightedItems )
m_iface->HideItem( item );
SetFailureReason( _( "The routing start point violates DRC." ) );
return false;
}
}
return true;
}
bool ROUTER::StartRouting( const VECTOR2I& aP, ITEM* aStartItem, int aLayer )
{
if( !isStartingPointRoutable( aP, aStartItem, aLayer ) )
return false;
m_forceMarkObstaclesMode = false;
switch( m_mode )
{
case PNS_MODE_ROUTE_SINGLE:
m_placer = std::make_unique<LINE_PLACER>( this );
break;
case PNS_MODE_ROUTE_DIFF_PAIR:
m_placer = std::make_unique<DIFF_PAIR_PLACER>( this );
break;
case PNS_MODE_TUNE_SINGLE:
m_placer = std::make_unique<MEANDER_PLACER>( this );
break;
case PNS_MODE_TUNE_DIFF_PAIR:
m_placer = std::make_unique<DP_MEANDER_PLACER>( this );
break;
case PNS_MODE_TUNE_DIFF_PAIR_SKEW:
m_placer = std::make_unique<MEANDER_SKEW_PLACER>( this );
break;
default:
return false;
}
m_placer->UpdateSizes( m_sizes );
m_placer->SetLayer( aLayer );
m_placer->SetDebugDecorator( m_iface->GetDebugDecorator() );
m_placer->SetLogger( m_logger );
if( m_logger )
{
m_logger->Clear();
m_logger->Log( LOGGER::EVT_START_ROUTE, aP, aStartItem );
}
if( m_placer->Start( aP, aStartItem ) )
{
m_state = ROUTE_TRACK;
return true;
}
else
{
m_state = IDLE;
return false;
}
}
void ROUTER::Move( const VECTOR2I& aP, ITEM* endItem )
{
if( m_logger )
m_logger->Log( LOGGER::EVT_MOVE, aP, endItem );
switch( m_state )
{
case ROUTE_TRACK:
movePlacing( aP, endItem );
break;
case DRAG_SEGMENT:
case DRAG_COMPONENT:
moveDragging( aP, endItem );
break;
default:
break;
}
}
void ROUTER::moveDragging( const VECTOR2I& aP, ITEM* aEndItem )
{
m_iface->EraseView();
m_dragger->Drag( aP );
ITEM_SET dragged = m_dragger->Traces();
updateView( m_dragger->CurrentNode(), dragged, true );
}
void ROUTER::markViolations( NODE* aNode, ITEM_SET& aCurrent, NODE::ITEM_VECTOR& aRemoved )
{
auto updateItem =
[&]( ITEM* currentItem, ITEM* itemToMark )
{
std::unique_ptr<ITEM> tmp( itemToMark->Clone() );
int clearance;
bool removeOriginal = true;
bool holeOnly = ( ( itemToMark->Marker() & MK_HOLE )
&& !( itemToMark->Marker() & MK_VIOLATION ) );
if( holeOnly )
clearance = aNode->GetHoleClearance( currentItem, itemToMark );
else
clearance = aNode->GetClearance( currentItem, itemToMark );
if( itemToMark->Layers().IsMultilayer() && !currentItem->Layers().IsMultilayer() )
tmp->SetLayer( currentItem->Layer() );
if( itemToMark->Kind() == ITEM::SOLID_T )
{
if( holeOnly || !m_iface->IsFlashedOnLayer( itemToMark, currentItem->Layer() ) )
{
SOLID* solid = static_cast<SOLID*>( tmp.get() );
if( solid->Hole() )
{
solid->SetShape( solid->Hole()->Clone() );
// Leave the pad flashing around the highlighted hole
removeOriginal = false;
}
}
if( itemToMark->IsCompoundShapePrimitive() )
{
// We're only highlighting one (or more) of several primitives so we
// don't want all the other parts of the object to disappear
removeOriginal = false;
}
}
m_iface->DisplayItem( tmp.get(), clearance );
if( removeOriginal )
aRemoved.push_back( itemToMark );
};
for( ITEM* item : aCurrent.Items() )
{
NODE::OBSTACLES obstacles;
aNode->QueryColliding( item, obstacles, ITEM::ANY_T );
if( item->OfKind( ITEM::LINE_T ) )
{
LINE* l = static_cast<LINE*>( item );
if( l->EndsWithVia() )
{
VIA v( l->Via() );
aNode->QueryColliding( &v, obstacles, ITEM::ANY_T );
}
}
for( OBSTACLE& obs : obstacles )
{
obs.m_item->Mark( obs.m_item->Marker() | MK_VIOLATION );
updateItem( item, obs.m_item );
}
if( item->Kind() == ITEM::LINE_T )
{
LINE* line = static_cast<LINE*>( item );
// Show clearance on any blocking obstacles
if( line->GetBlockingObstacle() )
updateItem( item, line->GetBlockingObstacle() );
}
}
}
void ROUTER::updateView( NODE* aNode, ITEM_SET& aCurrent, bool aDragging )
{
NODE::ITEM_VECTOR removed, added;
NODE::OBSTACLES obstacles;
if( !aNode )
return;
if( Settings().Mode() == RM_MarkObstacles || m_forceMarkObstaclesMode )
markViolations( aNode, aCurrent, removed );
aNode->GetUpdatedItems( removed, added );
for( ITEM* item : added )
{
GetRuleResolver()->ClearCacheForItem( item );
int clearance = GetRuleResolver()->Clearance( item, nullptr );
m_iface->DisplayItem( item, clearance, aDragging );
}
for( ITEM* item : removed )
m_iface->HideItem( item );
}
void ROUTER::UpdateSizes( const SIZES_SETTINGS& aSizes )
{
m_sizes = aSizes;
// Change track/via size settings
if( m_state == ROUTE_TRACK )
{
m_placer->UpdateSizes( m_sizes );
}
}
void ROUTER::movePlacing( const VECTOR2I& aP, ITEM* aEndItem )
{
m_iface->EraseView();
m_placer->Move( aP, aEndItem );
ITEM_SET current = m_placer->Traces();
for( const ITEM* item : current.CItems() )
{
if( !item->OfKind( ITEM::LINE_T ) )
continue;
const LINE* l = static_cast<const LINE*>( item );
int clearance = GetRuleResolver()->Clearance( item, nullptr );
m_iface->DisplayItem( l, clearance );
if( l->EndsWithVia() )
{
const VIA& via = l->Via();
int viaClearance = GetRuleResolver()->Clearance( &via, nullptr );
int holeClearance = GetRuleResolver()->HoleClearance( &via, nullptr );
if( holeClearance + via.Drill() / 2 > viaClearance + via.Diameter() / 2 )
viaClearance = holeClearance + via.Drill() / 2 - via.Diameter() / 2;
m_iface->DisplayItem( &l->Via(), viaClearance );
}
}
//ITEM_SET tmp( &current );
updateView( m_placer->CurrentNode( true ), current );
}
void ROUTER::CommitRouting( NODE* aNode )
{
if( m_state == ROUTE_TRACK && !m_placer->HasPlacedAnything() )
return;
NODE::ITEM_VECTOR removed;
NODE::ITEM_VECTOR added;
NODE::ITEM_VECTOR changed;
aNode->GetUpdatedItems( removed, added );
for( ITEM* item : removed )
{
bool is_changed = false;
// Items in remove/add that share the same parent are just updated versions
// We move them to the updated vector to preserve attributes such as UUID and pad data
if( item->Parent() )
{
for( NODE::ITEM_VECTOR::iterator added_it = added.begin();
added_it != added.end(); ++added_it )
{
if( ( *added_it )->Parent() && ( *added_it )->Parent() == item->Parent() )
{
changed.push_back( *added_it );
added.erase( added_it );
is_changed = true;
break;
}
}
}
if( !is_changed && !item->IsVirtual() )
m_iface->RemoveItem( item );
}
for( ITEM* item : added )
{
if( !item->IsVirtual() )
{
m_iface->AddItem( item );
}
}
for( ITEM* item : changed )
{
if( !item->IsVirtual() )
{
m_iface->UpdateItem( item );
}
}
m_iface->Commit();
m_world->Commit( aNode );
}
bool ROUTER::FixRoute( const VECTOR2I& aP, ITEM* aEndItem, bool aForceFinish )
{
bool rv = false;
if( m_logger )
m_logger->Log( LOGGER::EVT_FIX, aP, aEndItem );
switch( m_state )
{
case ROUTE_TRACK:
rv = m_placer->FixRoute( aP, aEndItem, aForceFinish );
break;
case DRAG_SEGMENT:
case DRAG_COMPONENT:
rv = m_dragger->FixRoute();
break;
default:
break;
}
return rv;
}
void ROUTER::UndoLastSegment()
{
if( !RoutingInProgress() )
return;
m_placer->UnfixRoute();
}
void ROUTER::CommitRouting()
{
if( m_state == ROUTE_TRACK )
m_placer->CommitPlacement();
StopRouting();
}
void ROUTER::StopRouting()
{
// Update the ratsnest with new changes
if( m_placer )
{
std::vector<int> nets;
m_placer->GetModifiedNets( nets );
// Update the ratsnest with new changes
for( int n : nets )
m_iface->UpdateNet( n );
}
if( !RoutingInProgress() )
return;
m_placer.reset();
m_dragger.reset();
m_iface->EraseView();
m_state = IDLE;
m_world->KillChildren();
m_world->ClearRanks();
}
void ROUTER::ClearViewDecorations()
{
m_iface->EraseView();
}
void ROUTER::FlipPosture()
{
if( m_state == ROUTE_TRACK )
{
m_placer->FlipPosture();
}
}
bool ROUTER::SwitchLayer( int aLayer )
{
if( m_state == ROUTE_TRACK )
return m_placer->SetLayer( aLayer );
return false;
}
void ROUTER::ToggleViaPlacement()
{
if( m_state == ROUTE_TRACK )
{
bool toggle = !m_placer->IsPlacingVia();
m_placer->ToggleVia( toggle );
}
}
const std::vector<int> ROUTER::GetCurrentNets() const
{
if( m_placer )
return m_placer->CurrentNets();
else if( m_dragger )
return m_dragger->CurrentNets();
return std::vector<int>();
}
int ROUTER::GetCurrentLayer() const
{
if( m_placer )
return m_placer->CurrentLayer();
else if( m_dragger )
return m_dragger->CurrentLayer();
return -1;
}
LOGGER* ROUTER::Logger()
{
return m_logger;
}
bool ROUTER::IsPlacingVia() const
{
if( !m_placer )
return false;
return m_placer->IsPlacingVia();
}
void ROUTER::ToggleCornerMode()
{
DIRECTION_45::CORNER_MODE mode = m_settings->GetCornerMode();
switch( m_settings->GetCornerMode() )
{
case DIRECTION_45::CORNER_MODE::MITERED_45: mode = DIRECTION_45::CORNER_MODE::ROUNDED_45; break;
case DIRECTION_45::CORNER_MODE::ROUNDED_45: mode = DIRECTION_45::CORNER_MODE::MITERED_90; break;
case DIRECTION_45::CORNER_MODE::MITERED_90: mode = DIRECTION_45::CORNER_MODE::ROUNDED_90; break;
case DIRECTION_45::CORNER_MODE::ROUNDED_90: mode = DIRECTION_45::CORNER_MODE::MITERED_45; break;
}
m_settings->SetCornerMode( mode );
}
void ROUTER::SetOrthoMode( bool aEnable )
{
if( !m_placer )
return;
m_placer->SetOrthoMode( aEnable );
}
void ROUTER::SetMode( ROUTER_MODE aMode )
{
m_mode = aMode;
}
void ROUTER::SetInterface( ROUTER_IFACE *aIface )
{
m_iface = aIface;
}
void ROUTER::BreakSegment( ITEM *aItem, const VECTOR2I& aP )
{
NODE *node = m_world->Branch();
LINE_PLACER placer( this );
if( placer.SplitAdjacentSegments( node, aItem, aP ) )
{
CommitRouting( node );
}
else
{
delete node;
}
}
}
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