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kicad/pcbnew/ratsnest_data.h

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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2013-2015 CERN
* @author Maciej Suminski <maciej.suminski@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
*/
/**
* @file ratsnest_data.h
* @brief Class that computes missing connections on a PCB.
*/
#ifndef RATSNEST_DATA_H
#define RATSNEST_DATA_H
#include <ttl/halfedge/hetriang.h>
#include <ttl/halfedge/hetraits.h>
#include <math/box2.h>
#include <boost/unordered_set.hpp>
#include <boost/unordered_map.hpp>
#include <boost/foreach.hpp>
class BOARD;
class BOARD_ITEM;
class BOARD_CONNECTED_ITEM;
class MODULE;
class D_PAD;
class VIA;
class TRACK;
class ZONE_CONTAINER;
class SHAPE_POLY_SET;
///> Types of items that are handled by the class
enum RN_ITEM_TYPE
{
RN_PADS = 0x01,
RN_VIAS = 0x02,
RN_TRACKS = 0x04,
RN_ZONES = 0x08,
RN_ALL = 0xFF
};
// Preserve KiCad coding style policy
typedef hed::NODE RN_NODE;
typedef hed::NODE_PTR RN_NODE_PTR;
typedef hed::EDGE RN_EDGE;
typedef hed::EDGE_PTR RN_EDGE_PTR;
typedef hed::EDGE_MST RN_EDGE_MST;
typedef hed::TRIANGULATION TRIANGULATOR;
typedef boost::shared_ptr<hed::EDGE_MST> RN_EDGE_MST_PTR;
bool operator==( const RN_NODE_PTR& aFirst, const RN_NODE_PTR& aSecond );
bool operator!=( const RN_NODE_PTR& aFirst, const RN_NODE_PTR& aSecond );
struct RN_NODE_OR_FILTER;
struct RN_NODE_AND_FILTER;
///> General interface for filtering out nodes in search functions.
struct RN_NODE_FILTER : public std::unary_function<const RN_NODE_PTR&, bool>
{
virtual ~RN_NODE_FILTER() {}
virtual bool operator()( const RN_NODE_PTR& aNode ) const
{
return true; // By default everything passes
}
friend RN_NODE_AND_FILTER operator&&( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 );
friend RN_NODE_OR_FILTER operator||( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 );
};
RN_NODE_AND_FILTER operator&&( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 );
RN_NODE_OR_FILTER operator||( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 );
///> Filters out nodes that have the flag set.
struct WITHOUT_FLAG : public RN_NODE_FILTER
{
bool operator()( const RN_NODE_PTR& aNode ) const
{
return !aNode->GetFlag();
}
};
///> Filters out nodes with a specific tag
struct DIFFERENT_TAG : public RN_NODE_FILTER
{
DIFFERENT_TAG( int aTag ) :
m_tag( aTag )
{}
bool operator()( const RN_NODE_PTR& aNode ) const
{
return aNode->GetTag() != m_tag;
}
private:
int m_tag;
};
struct RN_NODE_AND_FILTER : public RN_NODE_FILTER
{
RN_NODE_AND_FILTER( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 ) :
m_filter1( aFilter1 ), m_filter2( aFilter2 )
{}
bool operator()( const RN_NODE_PTR& aNode ) const
{
return m_filter1( aNode ) && m_filter2( aNode );
}
private:
const RN_NODE_FILTER& m_filter1;
const RN_NODE_FILTER& m_filter2;
};
struct RN_NODE_OR_FILTER : public RN_NODE_FILTER
{
RN_NODE_OR_FILTER( const RN_NODE_FILTER& aFilter1, const RN_NODE_FILTER& aFilter2 ) :
m_filter1( aFilter1 ), m_filter2( aFilter2 )
{}
bool operator()( const RN_NODE_PTR& aNode ) const
{
return m_filter1( aNode ) || m_filter2( aNode );
}
private:
const RN_NODE_FILTER& m_filter1;
const RN_NODE_FILTER& m_filter2;
};
///> Functor comparing if two nodes are equal by their coordinates. It is required to make set of
///> shared pointers work properly.
struct RN_NODE_COMPARE : std::binary_function<RN_NODE_PTR, RN_NODE_PTR, bool>
{
bool operator()( const RN_NODE_PTR& aNode1, const RN_NODE_PTR& aNode2 ) const
{
return aNode1 == aNode2;
}
};
///> Functor calculating hash for a given node. It is required to make set of shared pointers
///> work properly.
struct RN_NODE_HASH : std::unary_function<RN_NODE_PTR, std::size_t>
{
std::size_t operator()( const RN_NODE_PTR& aNode ) const
{
std::size_t hash = 2166136261u;
hash ^= aNode->GetX();
hash *= 16777619;
hash ^= aNode->GetY();
return hash;
}
};
/**
* Class RN_LINKS
* Manages data describing nodes and connections for a given net.
*/
class RN_LINKS
{
public:
// Helper typedefs
typedef boost::unordered_set<RN_NODE_PTR, RN_NODE_HASH, RN_NODE_COMPARE> RN_NODE_SET;
typedef std::list<RN_EDGE_PTR> RN_EDGE_LIST;
/**
* Function AddNode()
* Adds a node with given coordinates and returns pointer to the newly added node. If the node
* existed before, only appropriate pointer is returned.
* @param aX is the x coordinate of a node.
* @param aY is the y coordinate of a node.
* @return Pointer to the node with given coordinates.
*/
const RN_NODE_PTR& AddNode( int aX, int aY );
/**
* Function RemoveNode()
* Removes a node described by a given node pointer.
* @param aNode is a pointer to node to be removed.
* @return True if node was removed, false if there were other references, so it was kept.
*/
bool RemoveNode( const RN_NODE_PTR& aNode );
/**
* Function GetNodes()
* Returns the set of currently used nodes.
* @return The set of currently used nodes.
*/
const RN_NODE_SET& GetNodes() const
{
return m_nodes;
}
/**
* Function AddConnection()
* Adds a connection between two nodes and of given distance. Edges with distance equal 0 are
* considered to be existing connections. Distance different than 0 means that the connection
* is missing.
* @param aNode1 is the origin node of a new connection.
* @param aNode2 is the end node of a new connection.
* @param aDistance is the distance of the connection (0 means that nodes are actually
* connected, >0 means a missing connection).
*/
RN_EDGE_MST_PTR AddConnection( const RN_NODE_PTR& aNode1, const RN_NODE_PTR& aNode2,
unsigned int aDistance = 0 );
/**
* Function RemoveConnection()
* Removes a connection described by a given edge pointer.
* @param aEdge is a pointer to edge to be removed.
*/
void RemoveConnection( const RN_EDGE_PTR& aEdge )
{
m_edges.remove( aEdge );
}
/**
* Function GetConnections()
* Returns the list of edges that currently connect nodes.
* @return the list of edges that currently connect nodes.
*/
const RN_EDGE_LIST& GetConnections() const
{
return m_edges;
}
protected:
///> Set of nodes that are expected to be connected together (vias, tracks, pads).
RN_NODE_SET m_nodes;
///> List of edges that currently connect nodes.
RN_EDGE_LIST m_edges;
};
/**
* Class RN_POLY
* Describes a single subpolygon (ZONE_CONTAINER is supposed to contain one or more of those) and
* performs fast point-inside-polygon test.
*/
class RN_POLY
{
public:
RN_POLY( const SHAPE_POLY_SET* aParent,
int aSubpolygonIndex,
RN_LINKS& aConnections, const BOX2I& aBBox );
/**
* Function GetNode()
* Returns node representing a polygon (it has the same coordinates as the first point of its
* bounding polyline.
*/
inline const RN_NODE_PTR& GetNode() const
{
return m_node;
}
inline RN_NODE_PTR& GetNode()
{
return m_node;
}
/**
* Function HitTest()
* Tests if selected node is located within polygon boundaries.
* @param aNode is a node to be checked.
* @return True is the node is located within polygon boundaries.
*/
bool HitTest( const RN_NODE_PTR& aNode ) const;
private:
///> Index of the outline in the parent polygon set
int m_subpolygonIndex;
///> Bounding box of the polygon.
BOX2I m_bbox;
///> Polygon set containing the geometry
const SHAPE_POLY_SET* m_parentPolyset;
///> Node representing a polygon (it has the same coordinates as the first point of its
///> bounding polyline.
RN_NODE_PTR m_node;
friend bool sortArea( const RN_POLY& aP1, const RN_POLY& aP2 );
};
/**
* Class RN_NET
* Describes ratsnest for a single net.
*/
class RN_NET
{
public:
///> Default constructor.
RN_NET() : m_dirty( true ), m_visible( true )
{}
/**
* Function SetVisible()
* Sets state of the visibility flag.
* @param aEnabled is new state. True if ratsnest for a given net is meant to be displayed,
* false otherwise.
*/
void SetVisible( bool aEnabled )
{
m_visible = aEnabled;
}
/**
* Function IsVisible()
* Returns the visibility flag state.
* @return True if ratsnest for given net is set as visible, false otherwise,
*/
bool IsVisible() const
{
return m_visible;
}
/**
* Function MarkDirty()
* Marks ratsnest for given net as 'dirty', i.e. requiring recomputation.
*/
void MarkDirty()
{
m_dirty = true;
}
/**
* Function IsDirty()
* Returns state of the 'dirty' flag, indicating that ratsnest for a given net is invalid
* and requires an update.
* @return True if ratsnest requires recomputation, false otherwise.
*/
bool IsDirty() const
{
return m_dirty;
}
/**
* Function GetUnconnected()
* Returns pointer to a vector of edges that makes ratsnest for a given net.
* @return Pointer to a vector of edges that makes ratsnest for a given net.
*/
const std::vector<RN_EDGE_MST_PTR>* GetUnconnected() const
{
return m_rnEdges.get();
}
/**
* Function Update()
* Recomputes ratsnest for a net.
*/
void Update();
/**
* Function AddItem()
* Adds an appropriate node associated with selected pad, so it is
* taken into account during ratsnest computations.
* @param aPad is a pad for which node is added.
*/
void AddItem( const D_PAD* aPad );
/**
* Function AddItem()
* Adds an appropriate node associated with selected via, so it is
* taken into account during ratsnest computations.
* @param aVia is a via for which node is added.
*/
void AddItem( const VIA* aVia );
/**
* Function AddItem()
* Adds appropriate nodes and edges associated with selected track, so they are
* taken into account during ratsnest computations.
* @param aTrack is a track for which nodes and edges are added.
*/
void AddItem( const TRACK* aTrack );
/**
* Function AddItem()
* Processes zone to split it into subpolygons and adds appropriate nodes for them, so they are
* taken into account during ratsnest computations.
* @param aZone is a zone to be processed.
*/
void AddItem( const ZONE_CONTAINER* aZone );
/**
* Function RemoveItem()
* Removes all nodes and edges associated with selected pad, so they are not
* taken into account during ratsnest computations anymore.
* @param aPad is a pad for which nodes and edges are removed.
*/
void RemoveItem( const D_PAD* aPad );
/**
* Function RemoveItem()
* Removes all nodes and edges associated with selected via, so they are not
* taken into account during ratsnest computations anymore.
* @param aVia is a via for which nodes and edges are removed.
*/
void RemoveItem( const VIA* aVia );
/**
* Function RemoveItem()
* Removes all nodes and edges associated with selected track, so they are not
* taken into account during ratsnest computations anymore.
* @param aTrack is a track for which nodes and edges are removed.
*/
void RemoveItem( const TRACK* aTrack );
/**
* Function RemoveItem()
* Removes all nodes and edges associated with selected zone, so they are not
* taken into account during ratsnest computations anymore.
* @param aZone is a zone for which nodes and edges are removed.
*/
void RemoveItem( const ZONE_CONTAINER* aZone );
/**
* Function GetNodes()
* Returns list of nodes that are associated with a given item.
* @param aItem is an item for which the list is generated.
* @return List of associated nodes.
*/
std::list<RN_NODE_PTR> GetNodes( const BOARD_CONNECTED_ITEM* aItem ) const;
/**
* Function GetAllItems()
* Adds all stored items to a list.
* @param aOutput is the list that will have items added.
* @param aType determines the type of added items.
*/
void GetAllItems( std::list<BOARD_CONNECTED_ITEM*>& aOutput, RN_ITEM_TYPE aType = RN_ALL ) const;
/**
* Function GetClosestNode()
* Returns a single node that lies in the shortest distance from a specific node.
* @param aNode is the node for which the closest node is searched.
*/
const RN_NODE_PTR GetClosestNode( const RN_NODE_PTR& aNode ) const;
/**
* Function GetClosestNode()
* Returns a single node that lies in the shortest distance from a specific node and meets
* selected filter criterion..
* @param aNode is the node for which the closest node is searched.
* @param aFilter is a functor that filters nodes.
*/
const RN_NODE_PTR GetClosestNode( const RN_NODE_PTR& aNode,
const RN_NODE_FILTER& aFilter ) const;
/**
* Function GetClosestNodes()
* Returns list of nodes sorted by the distance from a specific node.
* @param aNode is the node for which the closest nodes are searched.
* @param aNumber is asked number of returned nodes. If it is negative then all nodes that
* belong to the same net are returned. If asked number is greater than number of possible
* nodes then the size of list is limited to number of possible nodes.
*/
std::list<RN_NODE_PTR> GetClosestNodes( const RN_NODE_PTR& aNode, int aNumber = -1 ) const;
/**
* Function GetClosestNodes()
* Returns filtered list of nodes sorted by the distance from a specific node.
* @param aNode is the node for which the closest nodes are searched.
* @param aFilter is a functor that filters nodes.
* @param aNumber is asked number of returned nodes. If it is negative then all nodes that
* belong to the same net are returned. If asked number is greater than number of possible
* nodes then the size of list is limited to number of possible nodes.
*/
std::list<RN_NODE_PTR> GetClosestNodes( const RN_NODE_PTR& aNode,
const RN_NODE_FILTER& aFilter, int aNumber = -1 ) const;
/**
* Function AddSimple()
* Changes drawing mode for an item to simple (i.e. one ratsnest line per node).
* @param aNode is a node that changes its drawing mode.
*/
void AddSimple( const BOARD_CONNECTED_ITEM* aItem );
/**
* Function AddBlockedNode()
* Specifies a node as not suitable as a ratsnest line target (i.e. ratsnest lines will not
* target the node). The status is cleared after calling ClearSimple().
* @param aNode is the node that is not going to be used as a ratsnest line target.
*/
inline void AddBlockedNode( RN_NODE_PTR& aNode )
{
m_blockedNodes.insert( aNode );
aNode->SetFlag( true );
}
/**
* Function GetSimpleNodes()
* Returns list of nodes for which ratsnest is drawn in simple mode (i.e. one
* ratsnest line per node).
* @return list of nodes for which ratsnest is drawn in simple mode.
*/
inline const boost::unordered_set<RN_NODE_PTR>& GetSimpleNodes() const
{
return m_simpleNodes;
}
/**
* Function ClearSimple()
* Removes all nodes and edges that are used for displaying ratsnest in simple mode.
*/
void ClearSimple();
/**
* Function GetConnectedItems()
* Adds items that are connected together to a list.
* @param aItem is the reference item to find other connected items.
* @param aOutput is the list that will contain found items.
* @param aTypes allows to filter by item types.
*/
void GetConnectedItems( const BOARD_CONNECTED_ITEM* aItem,
std::list<BOARD_CONNECTED_ITEM*>& aOutput,
RN_ITEM_TYPE aTypes = RN_ALL ) const;
protected:
///> Validates edge, i.e. modifies source and target nodes for an edge
///> to make sure that they are not ones with the flag set.
void validateEdge( RN_EDGE_MST_PTR& aEdge );
///> Removes a link between a node and a parent,
///> and clears linked edges if it was the last parent.
void removeNode( RN_NODE_PTR& aNode, const BOARD_CONNECTED_ITEM* aParent );
///> Removes a link between an edge and a parent,
///> and clears its node data if it was the last parent.
void removeEdge( RN_EDGE_MST_PTR& aEdge, const BOARD_CONNECTED_ITEM* aParent );
///> Removes all ratsnest edges for a given node.
void clearNode( const RN_NODE_PTR& aNode );
///> Adds appropriate edges for nodes that are connected by zones.
void processZones();
///> Adds additional edges to account for connections made by items located in pads areas.
void processPads();
///> Recomputes ratsnset from scratch.
void compute();
////> Stores information about connections for a given net.
RN_LINKS m_links;
///> Vector of edges that makes ratsnest for a given net.
boost::shared_ptr< std::vector<RN_EDGE_MST_PTR> > m_rnEdges;
///> List of nodes which will not be used as ratsnest target nodes.
boost::unordered_set<RN_NODE_PTR> m_blockedNodes;
///> Nodes to be displayed using the simplified ratsnest algorithm.
boost::unordered_set<RN_NODE_PTR> m_simpleNodes;
///> Flag indicating necessity of recalculation of ratsnest for a net.
bool m_dirty;
///> Structure to hold ratsnest data for ZONE_CONTAINER objects.
typedef struct
{
///> Subpolygons belonging to a zone
std::deque<RN_POLY> m_Polygons;
///> Connections to other nodes
std::deque<RN_EDGE_MST_PTR> m_Edges;
} RN_ZONE_DATA;
///> Structureo to hold ratsnest data for D_PAD objects.
typedef struct
{
///> Node representing the pad.
RN_NODE_PTR m_Node;
///> Helper nodes that make for connections to items located in the pad area.
std::deque<RN_EDGE_MST_PTR> m_Edges;
} RN_PAD_DATA;
///> Helper typedefs
typedef boost::unordered_map<const D_PAD*, RN_PAD_DATA> PAD_NODE_MAP;
typedef boost::unordered_map<const VIA*, RN_NODE_PTR> VIA_NODE_MAP;
typedef boost::unordered_map<const TRACK*, RN_EDGE_MST_PTR> TRACK_EDGE_MAP;
typedef boost::unordered_map<const ZONE_CONTAINER*, RN_ZONE_DATA> ZONE_DATA_MAP;
///> Map that associates nodes in the ratsnest model to respective nodes.
PAD_NODE_MAP m_pads;
///> Map that associates nodes in the ratsnest model to respective vias.
VIA_NODE_MAP m_vias;
///> Map that associates edges in the ratsnest model to respective tracks.
TRACK_EDGE_MAP m_tracks;
///> Map that associates groups of subpolygons in the ratsnest model to respective zones.
ZONE_DATA_MAP m_zones;
///> Visibility flag.
bool m_visible;
};
/**
* Class RN_DATA
*
* Stores information about unconnected items for a board.
*/
class RN_DATA
{
public:
/**
* Default constructor
* @param aBoard is the board to be processed in order to look for unconnected items.
*/
RN_DATA( const BOARD* aBoard ) : m_board( aBoard ) {}
/**
* Function Add()
* Adds an item to the ratsnest data.
* @param aItem is an item to be added.
*/
void Add( const BOARD_ITEM* aItem );
/**
* Function Remove()
* Removes an item from the ratsnest data.
* @param aItem is an item to be updated.
*/
void Remove( const BOARD_ITEM* aItem );
/**
* Function Update()
* Updates the ratsnest data for an item.
* @param aItem is an item to be updated.
*/
void Update( const BOARD_ITEM* aItem );
/**
* Function AddSimple()
* Sets an item to be drawn in simple mode (i.e. one line per node, instead of full ratsnest).
* It is used for drawing quick, temporary ratsnest, eg. while moving an item.
* @param aItem is an item to be drawn in simple node.
*/
void AddSimple( const BOARD_ITEM* aItem );
/**
* Function AddBlocked()
* Specifies an item as not suitable as a ratsnest line target (i.e. ratsnest lines will not
* target its node(s)). The status is cleared after calling ClearSimple().
* @param aItem is the item of which node(s) are not going to be used as a ratsnest line target.
*/
void AddBlocked( const BOARD_ITEM* aItem );
/**
* Function ClearSimple()
* Clears the list of nodes for which ratsnest is drawn in simple mode (one line per node).
*/
void ClearSimple()
{
BOOST_FOREACH( RN_NET& net, m_nets )
net.ClearSimple();
}
/**
* Function ProcessBoard()
* Prepares data for computing (computes a list of current nodes and connections). It is
* required to run only once after loading a board.
*/
void ProcessBoard();
/**
* Function Recalculate()
* Recomputes ratsnest for selected net number or all nets that need updating.
* @param aNet is a net number. If it is negative, all nets that need updating are recomputed.
*/
void Recalculate( int aNet = -1 );
/**
* Function GetNetCount()
* Returns the number of nets handled by the ratsnest.
* @return Number of the nets.
*/
int GetNetCount() const
{
return m_nets.size();
}
/**
* Function GetNet()
* Returns ratsnest grouped by net numbers.
* @param aNetCode is the net code.
* @return Ratsnest data for a specified net.
*/
RN_NET& GetNet( int aNetCode )
{
assert( aNetCode > 0 ); // ratsnest does not handle the unconnected net
return m_nets[aNetCode];
}
/**
* Function GetConnectedItems()
* Adds items that are connected together to a list.
* @param aItem is the reference item to find other connected items.
* @param aOutput is the list that will contain found items.
* @param aTypes allows to filter by item types.
*/
void GetConnectedItems( const BOARD_CONNECTED_ITEM* aItem,
std::list<BOARD_CONNECTED_ITEM*>& aOutput,
RN_ITEM_TYPE aTypes = RN_ALL ) const;
/**
* Function GetNetItems()
* Adds all items that belong to a certain net to a list.
* @param aNetCode is the net code.
* @param aOutput is the list that will have items added.
* @param aTypes allows to filter by item types.
*/
void GetNetItems( int aNetCode, std::list<BOARD_CONNECTED_ITEM*>& aOutput,
RN_ITEM_TYPE aTypes = RN_ALL ) const;
/**
* Function AreConnected()
* Checks if two items are connected with copper.
* @param aThis is the first item.
* @param aOther is the second item.
* @return True if they are connected, false otherwise.
*/
bool AreConnected( const BOARD_CONNECTED_ITEM* aItem, const BOARD_CONNECTED_ITEM* aOther );
/**
* Function GetUnconnectedCount()
* Returns the number of missing connections.
* @return Number of missing connections.
*/
int GetUnconnectedCount() const;
protected:
/**
* Function updateNet()
* Recomputes ratsnest for a single net.
* @param aNetCode is the net number to be recomputed.
*/
void updateNet( int aNetCode );
///> Board to be processed.
const BOARD* m_board;
///> Stores information about ratsnest grouped by net numbers.
std::vector<RN_NET> m_nets;
};
#endif /* RATSNEST_DATA_H */
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