kicad/pcbnew/router/pns_component_dragger.cpp

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2020 CERN
* Copyright (C) 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 <memory>
#include "pns_arc.h"
#include "pns_line.h"
#include "pns_solid.h"
#include "pns_router.h"
#include "pns_component_dragger.h"
#include "pns_debug_decorator.h"
namespace PNS
{
COMPONENT_DRAGGER::COMPONENT_DRAGGER( ROUTER* aRouter ) : DRAG_ALGO( aRouter )
{
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// ensure all variables are initialized
m_dragStatus = false;
m_currentNode = nullptr;
}
COMPONENT_DRAGGER::~COMPONENT_DRAGGER()
{
}
bool COMPONENT_DRAGGER::Start( const VECTOR2I& aP, ITEM_SET& aPrimitives )
{
assert( m_world );
m_currentNode = nullptr;
m_initialDraggedItems = aPrimitives;
m_p0 = aP;
std::unordered_set<LINKED_ITEM*> seenItems;
auto addLinked =
[&]( SOLID* aSolid, JOINT* aJoint, LINKED_ITEM* aItem, VECTOR2I aOffset = {} )
{
if( seenItems.count( aItem ) )
return;
seenItems.insert( aItem );
// Segments that go directly between two linked pads are special-cased
VECTOR2I otherEnd = ( aJoint->Pos() == aItem->Anchor( 0 ) ) ?
aItem->Anchor( 1 ) : aItem->Anchor( 0 );
JOINT* otherJoint = m_world->FindJoint( otherEnd, aItem->Layer(), aItem->Net() );
if( otherJoint && otherJoint->LinkCount( ITEM::SOLID_T ) )
{
for( const ITEM_SET::ENTRY& otherItem : otherJoint->LinkList() )
{
if( aPrimitives.Contains( otherItem.item ) )
{
m_fixedItems.insert( aItem );
return;
}
}
}
int segIndex;
DRAGGED_CONNECTION cn;
cn.origLine = m_world->AssembleLine( aItem, &segIndex );
cn.attachedPad = aSolid;
cn.offset = aOffset;
// Lines that go directly between two linked pads are also special-cased
const SHAPE_LINE_CHAIN& line = cn.origLine.CLine();
JOINT* jA = m_world->FindJoint( line.CPoint( 0 ), aItem->Layer(), aItem->Net() );
JOINT* jB = m_world->FindJoint( line.CPoint( -1 ), aItem->Layer(), aItem->Net() );
wxASSERT( jA == aJoint || jB == aJoint );
JOINT* jSearch = ( jA == aJoint ) ? jB : jA;
if( jSearch && jSearch->LinkCount( ITEM::SOLID_T ) )
{
for( const ITEM_SET::ENTRY& otherItem : jSearch->LinkList() )
{
if( aPrimitives.Contains( otherItem.item ) )
{
for( ITEM* item : cn.origLine.Links() )
m_fixedItems.insert( item );
return;
}
}
}
m_conns.push_back( cn );
};
for( auto item : aPrimitives.Items() )
{
if( item.item->Kind() != ITEM::SOLID_T )
continue;
if( ! item.item->IsRoutable() )
continue;
auto solid = static_cast<SOLID*>( item.item );
auto jt = m_world->FindJoint( solid->Pos(), solid );
m_solids.insert( solid );
for( auto link : jt->LinkList() )
{
if( link.item->OfKind( ITEM::SEGMENT_T | ITEM::ARC_T ) )
addLinked( solid, jt, static_cast<LINKED_ITEM*>( link.item ) );
}
std::vector<JOINT*> extraJoints;
m_world->QueryJoints( solid->Hull().BBox(), extraJoints, solid->Layers(),
ITEM::SEGMENT_T | ITEM::ARC_T );
for( JOINT* extraJoint : extraJoints )
{
if( extraJoint->Net() == jt->Net() && extraJoint->LinkCount() == 1 )
{
LINKED_ITEM* li = static_cast<LINKED_ITEM*>( extraJoint->LinkList()[0].item );
if( li->Collide( solid, nullptr, m_world ) )
addLinked( solid, extraJoint, li, extraJoint->Pos() - solid->Pos() );
}
}
}
return true;
}
bool COMPONENT_DRAGGER::Drag( const VECTOR2I& aP )
{
assert( m_world );
m_world->KillChildren();
m_currentNode = m_world->Branch();
for( auto item : m_initialDraggedItems.Items() )
m_currentNode->Remove( item );
m_draggedItems.Clear();
for( auto item : m_solids )
{
SOLID* s = static_cast<SOLID*>( item );
auto p_next = aP - m_p0 + s->Pos();
std::unique_ptr<SOLID> snew( static_cast<SOLID*>( s->Clone() ) );
snew->SetPos( p_next );
m_draggedItems.Add( snew.get() );
m_currentNode->Add( std::move( snew ) );
for( auto& l : m_conns )
{
if( l.attachedPad == s )
{
l.p_orig = s->Pos() + l.offset;
l.p_next = p_next + l.offset;
}
}
}
for( ITEM* item : m_fixedItems )
{
m_currentNode->Remove( item );
switch( item->Kind() )
{
case ITEM::SEGMENT_T:
{
SEGMENT* s = static_cast<SEGMENT*>( item );
std::unique_ptr<SEGMENT> s_new( s->Clone() );
SEG orig = s->Seg();
s_new->SetEnds( aP - m_p0 + orig.A, aP - m_p0 + orig.B );
m_draggedItems.Add( s_new.get() );
m_currentNode->Add( std::move( s_new ) );
break;
}
case ITEM::ARC_T:
{
ARC* a = static_cast<ARC*>( item );
std::unique_ptr<ARC> a_new( a->Clone() );
SHAPE_ARC& arc = a_new->Arc();
arc.Move( aP - m_p0 );
m_draggedItems.Add( a_new.get() );
m_currentNode->Add( std::move( a_new ) );
break;
}
default:
wxFAIL_MSG( "Unexpected item type in COMPONENT_DRAGGER::m_fixedItems" );
}
}
for( auto& cn : m_conns )
{
auto l_new( cn.origLine );
l_new.Unmark();
l_new.ClearLinks();
l_new.DragCorner( cn.p_next, cn.origLine.CLine().Find( cn.p_orig ) );
PNS_DBG( Dbg(), AddLine, l_new.CLine(), BLUE, 100000, "cdrag-new-fanout" );
m_draggedItems.Add( l_new );
auto l_orig( cn.origLine );
m_currentNode->Remove( l_orig );
m_currentNode->Add( l_new );
}
return true;
}
bool COMPONENT_DRAGGER::FixRoute()
{
NODE* node = CurrentNode();
if( node )
{
bool ok;
if( Settings().AllowDRCViolations() )
ok = true;
else
ok = !node->CheckColliding( m_draggedItems );
if( !ok )
return false;
Router()->CommitRouting( node );
return true;
}
return false;
}
NODE* COMPONENT_DRAGGER::CurrentNode() const
{
return m_currentNode ? m_currentNode : m_world;
}
const ITEM_SET COMPONENT_DRAGGER::Traces()
{
return m_draggedItems;
}
}; // namespace PNS