kicad/pcbnew/router/pns_index.h

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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2014 CERN
* Copyright (C) 2016-2020 KiCad Developers, see AUTHORS.txt for contributors.
* 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_INDEX_H
#define __PNS_INDEX_H
#include <deque>
#include <list>
#include <map>
#include <unordered_set>
#include <layers_id_colors_and_visibility.h>
#include <geometry/shape_index.h>
#include "pns_item.h"
namespace PNS {
/**
* INDEX
*
* Custom spatial index, holding our board items and allowing for very fast searches. Items
* are assigned to separate R-Tree subindices depending on their type and spanned layers, reducing
* overlap and improving search time.
**/
class INDEX
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{
public:
typedef std::list<ITEM*> NET_ITEMS_LIST;
typedef SHAPE_INDEX<ITEM*> ITEM_SHAPE_INDEX;
typedef std::unordered_set<ITEM*> ITEM_SET;
INDEX(){};
/**
* Adds item to the spatial index.
*/
void Add( ITEM* aItem );
/**
* Removes an item from the spatial index.
*/
void Remove( ITEM* aItem );
/**
* Replaces one item with another.
*/
void Replace( ITEM* aOldItem, ITEM* aNewItem );
/**
* Searches items in the index that are in proximity of aItem.
* For each item, function object aVisitor is called. Only items on
* overlapping layers are considered.
*
* @param aItem item to search against
* @param aMinDistance proximity distance (wrs to the item's shape)
* @param aVisitor function object called on each found item. Return
false from the visitor to stop searching.
* @return number of items found.
*/
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template<class Visitor>
int Query( const ITEM* aItem, int aMinDistance, Visitor& aVisitor );
/**
* Searches items in the index that are in proximity of aShape.
* For each item, function object aVisitor is called. Treats all
* layers as colliding.
*
* @param aShape shape to search against
* @param aMinDistance proximity distance (wrs to the item's shape)
* @param aVisitor function object called on each found item. Return
false from the visitor to stop searching.
* @return number of items found.
*/
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template<class Visitor>
int Query( const SHAPE* aShape, int aMinDistance, Visitor& aVisitor );
/**
* Returns list of all items in a given net.
*/
NET_ITEMS_LIST* GetItemsForNet( int aNet );
/**
* Function Contains()
*
* Returns true if item aItem exists in the index.
*/
bool Contains( ITEM* aItem ) const
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{
return m_allItems.find( aItem ) != m_allItems.end();
}
/**
* Returns number of items stored in the index.
*/
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int Size() const { return m_allItems.size(); }
ITEM_SET::iterator begin() { return m_allItems.begin(); }
ITEM_SET::iterator end() { return m_allItems.end(); }
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private:
template <class Visitor>
int querySingle( std::size_t aIndex, const SHAPE* aShape, int aMinDistance, Visitor& aVisitor );
std::deque<ITEM_SHAPE_INDEX> m_subIndices;
std::map<int, NET_ITEMS_LIST> m_netMap;
ITEM_SET m_allItems;
};
template<class Visitor>
int INDEX::querySingle( std::size_t aIndex, const SHAPE* aShape, int aMinDistance, Visitor& aVisitor )
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{
if( aIndex >= m_subIndices.size() )
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return 0;
return m_subIndices[aIndex].Query( aShape, aMinDistance, aVisitor, false );
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}
template<class Visitor>
int INDEX::Query( const ITEM* aItem, int aMinDistance, Visitor& aVisitor )
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{
int total = 0;
const LAYER_RANGE& layers = aItem->Layers();
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for( int i = layers.Start(); i <= layers.End(); ++i )
total += querySingle( i, aItem->Shape(), aMinDistance, aVisitor );
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return total;
}
template<class Visitor>
int INDEX::Query( const SHAPE* aShape, int aMinDistance, Visitor& aVisitor )
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{
int total = 0;
for( std::size_t i = 0; i < m_subIndices.size(); ++i )
total += querySingle( i, aShape, aMinDistance, aVisitor );
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return total;
}
};
#endif