kicad/pcbnew/router/pns_item.h

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2014 CERN
* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
* 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.
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*
* 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.
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*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __PNS_ITEM_H
#define __PNS_ITEM_H
#include <math/vector2d.h>
#include <geometry/shape.h>
#include <geometry/shape_line_chain.h>
#include "trace.h"
#include "pns_layerset.h"
class BOARD_CONNECTED_ITEM;
class PNS_NODE;
enum LineMarker {
MK_HEAD = ( 1 << 0 ),
MK_VIOLATION = ( 1 << 3 ),
MK_LOCKED = ( 1 << 4 ),
MK_DP_COUPLED = ( 1 << 5 )
};
/**
* Class PNS_ITEM
*
* Base class for PNS router board items. Implements the shared properties of all PCB items -
* net, spanned layers, geometric shape & refererence to owning model.
*/
class PNS_ITEM
{
public:
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static const int UnusedNet = INT_MAX;
///> Supported item types
enum PnsKind
{
SOLID = 1,
LINE = 2,
JOINT = 4,
SEGMENT = 8,
VIA = 16,
DIFF_PAIR = 32,
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ANY = 0xff
};
PNS_ITEM( PnsKind aKind )
{
m_net = UnusedNet;
m_movable = true;
m_kind = aKind;
m_parent = NULL;
m_owner = NULL;
m_marker = 0;
m_rank = -1;
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}
PNS_ITEM( const PNS_ITEM& aOther )
{
m_layers = aOther.m_layers;
m_net = aOther.m_net;
m_movable = aOther.m_movable;
m_kind = aOther.m_kind;
m_parent = aOther.m_parent;
m_owner = NULL;
m_marker = aOther.m_marker;
m_rank = aOther.m_rank;
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}
virtual ~PNS_ITEM();
/**
* Function Clone()
*
* Returns a deep copy of the item
*/
virtual PNS_ITEM* Clone() const = 0;
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/*
* Function Hull()
*
* Returns a convex polygon "hull" of a the item, that is used as the walk-around
* path.
* @param aClearance defines how far from the body of the item the hull should be,
* @param aWalkaroundThickness is the width of the line that walks around this hull.
*/
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virtual const SHAPE_LINE_CHAIN Hull( int aClearance = 0, int aWalkaroundThickness = 0 ) const
{
return SHAPE_LINE_CHAIN();
}
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/**
* Function Kind()
*
* Returns the type (kind) of the item
*/
PnsKind Kind() const
{
return m_kind;
}
/**
* Function OfKind()
*
* Returns true if the item's type matches the mask aKindMask.
*/
bool OfKind( int aKindMask ) const
{
return ( aKindMask & m_kind ) != 0;
}
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/**
* Function KindStr()
*
* Returns the kind of the item, as string
*/
const std::string KindStr() const;
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/**
* Function SetParent()
*
* Sets the corresponding parent object in the host application's model.
*/
void SetParent( BOARD_CONNECTED_ITEM* aParent )
{
m_parent = aParent;
}
/**
* Function Parent()
*
* Returns the corresponding parent object in the host application's model.
*/
BOARD_CONNECTED_ITEM* Parent() const
{
return m_parent;
}
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/**
* Function SetNet()
*
* Sets the item's net to aNet
*/
void SetNet( int aNet )
{
m_net = aNet;
}
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/**
* Function Net()
*
* Returns the item's net.
*/
int Net() const
{
return m_net;
}
/**
* Function SetLayers()
*
* Sets the layers spanned by the item to aLayers.
*/
void SetLayers( const PNS_LAYERSET& aLayers )
{
m_layers = aLayers;
}
/**
* Function SetLayer()
*
* Sets the layers spanned by the item to a single layer aLayer.
*/
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void SetLayer( int aLayer )
{
m_layers = PNS_LAYERSET( aLayer, aLayer );
}
/**
* Function Layers()
*
* Returns the contiguous set of layers spanned by the item.
*/
const PNS_LAYERSET& Layers() const
{
return m_layers;
}
/**
* Function Layer()
*
* Returns the item's layer, for single-layered items only.
*/
virtual int Layer() const
{
return Layers().Start();
}
/**
* Function LayersOverlap()
*
* Returns true if the set of layers spanned by aOther overlaps our
* layers.
*/
bool LayersOverlap( const PNS_ITEM* aOther ) const
{
return Layers().Overlaps( aOther->Layers() );
}
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/**
* Functon SetOwner()
*
* Sets the node that owns this item. An item can belong to a single
* PNS_NODE or stay unowned.
*/
void SetOwner( PNS_NODE* aOwner )
{
m_owner = aOwner;
}
/**
* Function BelongsTo()
*
* @return true if the item is owned by the node aNode.
*/
bool BelongsTo( PNS_NODE* aNode ) const
{
return m_owner == aNode;
}
/**
* Function Owner()
*
* Returns the owner of this item, or NULL if there's none.
*/
PNS_NODE* Owner() const { return m_owner; }
/**
* Function Collide()
*
* Checks for a collision (clearance violation) with between us and item aOther.
* Collision checking takes all PCB stuff into accound (layers, nets, DRC rules).
* Optionally returns a minimum translation vector for force propagation
* algorithm.
*
* @param aOther item to check collision against
* @param aClearance desired clearance
* @param aNeedMTV when true, the minimum translation vector is calculated
* @param aMTV the minimum translation vector
* @return true, if a collision was found.
*/
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virtual bool Collide( const PNS_ITEM* aOther, int aClearance, bool aNeedMTV,
VECTOR2I& aMTV, bool aDifferentNetsOnly = true ) const;
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/**
* Function Collide()
*
* A shortcut for PNS_ITEM::Colllide() without MTV stuff.
*/
bool Collide( const PNS_ITEM* aOther, int aClearance, bool aDifferentNetsOnly = true ) const
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{
VECTOR2I dummy;
return Collide( aOther, aClearance, false, dummy, aDifferentNetsOnly );
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}
/**
* Function Shape()
*
* Returns the geometrical shape of the item. Used
* for collision detection & spatial indexing.
*/
virtual const SHAPE* Shape() const
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{
return NULL;
}
virtual void Mark(int aMarker)
{
m_marker = aMarker;
}
virtual void Unmark ()
{
m_marker = 0;
}
virtual int Marker() const
{
return m_marker;
}
virtual void SetRank( int aRank )
{
m_rank = aRank;
}
virtual int Rank() const
{
return m_rank;
}
virtual VECTOR2I Anchor( int n ) const
{
return VECTOR2I ();
}
virtual int AnchorCount() const
{
return 0;
}
private:
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bool collideSimple( const PNS_ITEM* aOther, int aClearance, bool aNeedMTV,
VECTOR2I& aMTV, bool aDifferentNetsOnly ) const;
protected:
PnsKind m_kind;
BOARD_CONNECTED_ITEM* m_parent;
PNS_NODE* m_owner;
PNS_LAYERSET m_layers;
bool m_movable;
int m_net;
int m_marker;
int m_rank;
};
#endif // __PNS_ITEM_H