kicad/pcbnew/connectivity/connectivity_items.h

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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2013-2017 CERN
* Copyright (C) 2018-2023 KiCad Developers, see AUTHORS.txt for contributors.
*
* @author Maciej Suminski <maciej.suminski@cern.ch>
* @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 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
*/
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#ifndef PCBNEW_CONNECTIVITY_ITEMS_H
#define PCBNEW_CONNECTIVITY_ITEMS_H
#include <board.h>
#include <pad.h>
#include <footprint.h>
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#include <pcb_track.h>
#include <zone.h>
#include <geometry/shape_poly_set.h>
#include <memory>
#include <algorithm>
#include <functional>
#include <vector>
#include <deque>
#include <connectivity/connectivity_rtree.h>
#include <connectivity/connectivity_data.h>
class CN_ITEM;
class CN_CLUSTER;
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/**
* CN_ANCHOR represents a physical location that can be connected: a pad or a track/arc/via
* endpoint.
*/
class CN_ANCHOR
{
public:
CN_ANCHOR( const VECTOR2I& aPos, CN_ITEM* aItem ) :
m_pos( aPos ),
m_item( aItem ),
m_tag( -1 ),
m_noline( false )
{ }
bool Valid() const;
bool Dirty() const;
CN_ITEM* Item() const { return m_item; }
void SetItem( CN_ITEM* aItem ) { m_item = aItem; }
BOARD_CONNECTED_ITEM* Parent() const;
const VECTOR2I& Pos() const { return m_pos; }
void Move( const VECTOR2I& aPos )
{
m_pos += aPos;
}
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unsigned int Dist( const CN_ANCHOR& aSecond )
{
return ( m_pos - aSecond.Pos() ).EuclideanNorm();
}
///< @return tag, a common identifier for connected nodes.
int GetTag() const { return m_tag; }
void SetTag( int aTag ) { m_tag = aTag; }
///< @return true if this node can be a target for ratsnest lines.
const bool& GetNoLine() const { return m_noline; }
void SetNoLine( bool aEnable ) { m_noline = aEnable; }
const std::shared_ptr<CN_CLUSTER>& GetCluster() const { return m_cluster; }
void SetCluster( std::shared_ptr<CN_CLUSTER>& aCluster ) { m_cluster = aCluster; }
/**
* The anchor point is dangling if the parent is a track and this anchor point is not
* connected to another item ( track, vias pad or zone) or if the parent is a via and
* this anchor point is connected to only one track and not to another item.
*
* @return true if this anchor is dangling.
*/
bool IsDangling() const;
/**
* @return the count of tracks and vias connected to this anchor.
*/
int ConnectedItemsCount() const;
// Tag used for unconnected items.
static const int TAG_UNCONNECTED = -1;
private:
VECTOR2I m_pos; ///< Position of the anchor.
CN_ITEM* m_item; ///< Pad or track/arc/via owning the anchor.
int m_tag; ///< Tag for quick connection resolution.
bool m_noline; ///< Whether it the node can be a target for ratsnest lines.
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std::shared_ptr<CN_CLUSTER> m_cluster; ///< Cluster to which the anchor belongs.
};
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/**
* CN_ITEM represents a BOARD_CONNETED_ITEM in the connectivity system (ie: a pad, track/arc/via,
* or zone).
*/
class CN_ITEM
{
public:
void Dump();
CN_ITEM( BOARD_CONNECTED_ITEM* aParent, bool aCanChangeNet, int aAnchorCount = 2 )
{
m_parent = aParent;
m_canChangeNet = aCanChangeNet;
m_visited = false;
m_valid = true;
m_dirty = true;
m_anchors.reserve( std::max( 6, aAnchorCount ) );
m_layers = LAYER_RANGE( 0, PCB_LAYER_ID_COUNT );
m_connected.reserve( 8 );
}
virtual ~CN_ITEM()
{
for( const std::shared_ptr<CN_ANCHOR>& anchor : m_anchors )
anchor->SetItem( nullptr );
};
std::shared_ptr<CN_ANCHOR> AddAnchor( const VECTOR2I& aPos )
{
m_anchors.emplace_back( std::make_shared<CN_ANCHOR>( aPos, this ) );
return m_anchors.at( m_anchors.size() - 1 );
}
std::vector<std::shared_ptr<CN_ANCHOR>>& Anchors() { return m_anchors; }
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void SetValid( bool aValid ) { m_valid = aValid; }
bool Valid() const { return m_valid; }
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void SetDirty( bool aDirty ) { m_dirty = aDirty; }
bool Dirty() const { return m_dirty; }
/**
* Set the layers spanned by the item to aLayers.
*/
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void SetLayers( const LAYER_RANGE& aLayers ) { m_layers = aLayers; }
/**
* Set the layers spanned by the item to a single layer aLayer.
*/
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void SetLayer( int aLayer ) { m_layers = LAYER_RANGE( aLayer, aLayer ); }
/**
* Return the contiguous set of layers spanned by the item.
*/
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const LAYER_RANGE& Layers() const { return m_layers; }
/**
* Return the item's layer, for single-layered items only.
*/
virtual int Layer() const
{
return Layers().Start();
}
const BOX2I& BBox()
{
if( m_dirty && m_valid )
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m_bbox = m_parent->GetBoundingBox();
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return m_bbox;
}
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BOARD_CONNECTED_ITEM* Parent() const { return m_parent; }
const std::vector<CN_ITEM*>& ConnectedItems() const { return m_connected; }
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void ClearConnections() { m_connected.clear(); }
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void SetVisited( bool aVisited ) { m_visited = aVisited; }
bool Visited() const { return m_visited; }
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bool CanChangeNet() const { return m_canChangeNet; }
void Connect( CN_ITEM* b )
{
std::lock_guard<std::mutex> lock( m_listLock );
auto i = std::lower_bound( m_connected.begin(), m_connected.end(), b );
if( i != m_connected.end() && *i == b )
return;
m_connected.insert( i, b );
}
void RemoveInvalidRefs();
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virtual int AnchorCount() const;
virtual const VECTOR2I GetAnchor( int n ) const;
int Net() const
{
return ( !m_parent || !m_valid ) ? -1 : m_parent->GetNetCode();
}
protected:
bool m_dirty; ///< used to identify recently added item not yet
///< scanned into the connectivity search
LAYER_RANGE m_layers; ///< layer range over which the item exists
BOX2I m_bbox; ///< bounding box for the item
private:
BOARD_CONNECTED_ITEM* m_parent;
std::vector<CN_ITEM*> m_connected; ///< list of physically touching items
std::vector<std::shared_ptr<CN_ANCHOR>> m_anchors;
bool m_canChangeNet; ///< can the net propagator modify the netcode?
bool m_visited; ///< visited flag for the BFS scan
bool m_valid; ///< used to identify garbage items (we use lazy removal)
std::mutex m_listLock; ///< mutex protecting this item's connected_items set to
};
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/*
* Represents a single outline of a zone fill on a particular layer. \a aSubpolyIndex indicates
* which outline in the fill's SHAPE_POLY_SET.
*/
class CN_ZONE_LAYER : public CN_ITEM
{
public:
CN_ZONE_LAYER( ZONE* aParent, PCB_LAYER_ID aLayer, int aSubpolyIndex ) :
CN_ITEM( aParent, false ),
m_zone( aParent ),
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m_subpolyIndex( aSubpolyIndex ),
m_layer( aLayer )
{
m_fillPoly = aParent->GetFilledPolysList( aLayer );
SetLayers( aLayer );
}
void BuildRTree()
{
if( m_zone->IsTeardropArea() )
return;
for( unsigned int ii = 0; ii < m_fillPoly->TriangulatedPolyCount(); ++ii )
{
const auto* triangleSet = m_fillPoly->TriangulatedPolygon( ii );
if( triangleSet->GetSourceOutlineIndex() != m_subpolyIndex )
continue;
for( const SHAPE_POLY_SET::TRIANGULATED_POLYGON::TRI& tri : triangleSet->Triangles() )
{
BOX2I bbox = tri.BBox();
const int mmin[2] = { bbox.GetX(), bbox.GetY() };
const int mmax[2] = { bbox.GetRight(), bbox.GetBottom() };
m_rTree.Insert( mmin, mmax, &tri );
}
}
}
int SubpolyIndex() const { return m_subpolyIndex; }
PCB_LAYER_ID GetLayer() const { return m_layer; }
bool ContainsPoint( const VECTOR2I& p ) const
{
if( m_zone->IsTeardropArea() )
return m_fillPoly->Outline( m_subpolyIndex ).Collide( p ) ;
int min[2] = { p.x, p.y };
int max[2] = { p.x, p.y };
bool collision = false;
auto visitor =
[&]( const SHAPE* aShape ) -> bool
{
if( aShape->Collide( p ) )
{
collision = true;
return false;
}
return true;
};
m_rTree.Search( min, max, visitor );
return collision;
}
PCB_LAYER_ID GetLayer() { return m_layer; }
virtual int AnchorCount() const override;
virtual const VECTOR2I GetAnchor( int n ) const override;
const SHAPE_LINE_CHAIN& GetOutline() const
{
return m_fillPoly->Outline( m_subpolyIndex );
}
bool Collide( SHAPE* aRefShape ) const
{
if( m_zone->IsTeardropArea() )
return m_fillPoly->Collide( aRefShape );
BOX2I bbox = aRefShape->BBox();
int min[2] = { bbox.GetX(), bbox.GetY() };
int max[2] = { bbox.GetRight(), bbox.GetBottom() };
bool collision = false;
auto visitor =
[&]( const SHAPE* aShape ) -> bool
{
if( aRefShape->Collide( aShape ) )
{
collision = true;
return false;
}
return true;
};
m_rTree.Search( min, max, visitor );
return collision;
}
bool HasSingleConnection();
private:
ZONE* m_zone;
int m_subpolyIndex;
PCB_LAYER_ID m_layer;
std::shared_ptr<SHAPE_POLY_SET> m_fillPoly;
RTree<const SHAPE*, int, 2, double> m_rTree;
};
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class CN_LIST
{
public:
CN_LIST()
{
m_dirty = false;
m_hasInvalid = false;
}
void Clear()
{
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for( CN_ITEM* item : m_items )
delete item;
m_items.clear();
m_index.RemoveAll();
}
std::vector<CN_ITEM*>::iterator begin() { return m_items.begin(); };
std::vector<CN_ITEM*>::iterator end() { return m_items.end(); };
std::vector<CN_ITEM*>::const_iterator begin() const { return m_items.begin(); }
std::vector<CN_ITEM*>::const_iterator end() const { return m_items.end(); }
CN_ITEM* operator[] ( int aIndex ) { return m_items[aIndex]; }
template <class T>
void FindNearby( CN_ITEM* aItem, T aFunc )
{
m_index.Query( aItem->BBox(), aItem->Layers(), aFunc );
}
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void SetHasInvalid( bool aInvalid = true ) { m_hasInvalid = aInvalid; }
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void SetDirty( bool aDirty = true ) { m_dirty = aDirty; }
bool IsDirty() const { return m_dirty; }
void RemoveInvalidItems( std::vector<CN_ITEM*>& aGarbage );
void ClearDirtyFlags()
{
for( CN_ITEM* item : m_items )
item->SetDirty( false );
SetDirty( false );
}
int Size() const { return m_items.size(); }
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CN_ITEM* Add( PAD* pad );
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CN_ITEM* Add( PCB_TRACK* track );
CN_ITEM* Add( PCB_ARC* track );
CN_ITEM* Add( PCB_VIA* via );
CN_ITEM* Add( CN_ZONE_LAYER* zitem );
const std::vector<CN_ITEM*> Add( ZONE* zone, PCB_LAYER_ID aLayer );
protected:
void addItemtoTree( CN_ITEM* item )
{
m_index.Insert( item );
}
protected:
std::vector<CN_ITEM*> m_items;
private:
bool m_dirty;
bool m_hasInvalid;
CN_RTREE<CN_ITEM*> m_index;
};
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class CN_CLUSTER
{
public:
CN_CLUSTER();
~CN_CLUSTER();
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bool HasValidNet() const { return m_originNet > 0; }
int OriginNet() const { return m_originNet; }
wxString OriginNetName() const;
bool Contains( const CN_ITEM* aItem );
bool Contains( const BOARD_CONNECTED_ITEM* aItem );
void Dump();
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int Size() const { return m_items.size(); }
bool IsOrphaned() const
{
return m_originPad == nullptr;
}
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bool IsConflicting() const { return m_conflicting; }
void Add( CN_ITEM* item );
std::vector<CN_ITEM*>::iterator begin() { return m_items.begin(); };
std::vector<CN_ITEM*>::iterator end() { return m_items.end(); };
private:
bool m_conflicting;
int m_originNet;
CN_ITEM* m_originPad;
std::vector<CN_ITEM*> m_items;
std::unordered_map<int, int> m_netRanks;
};
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#endif /* PCBNEW_CONNECTIVITY_ITEMS_H */