106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2013 CERN
|
|
* @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
|
|
*/
|
|
|
|
#ifndef __VIEW_RTREE_H
|
|
#define __VIEW_RTREE_H
|
|
|
|
#include <math/box2.h>
|
|
|
|
#include <geometry/rtree.h>
|
|
|
|
namespace KIGFX
|
|
{
|
|
typedef RTree<VIEW_ITEM*, int, 2, double> VIEW_RTREE_BASE;
|
|
|
|
/**
|
|
* VIEW_RTREE -
|
|
* Implements an R-tree for fast spatial indexing of VIEW items.
|
|
* Non-owning.
|
|
*/
|
|
class VIEW_RTREE : public VIEW_RTREE_BASE
|
|
{
|
|
public:
|
|
|
|
/**
|
|
* Function Insert()
|
|
* Inserts an item into the tree. Item's bounding box is taken via its ViewBBox() method.
|
|
*/
|
|
void Insert( VIEW_ITEM* aItem )
|
|
{
|
|
const BOX2I& bbox = aItem->ViewBBox();
|
|
const int mmin[2] = { bbox.GetX(), bbox.GetY() };
|
|
const int mmax[2] = { bbox.GetRight(), bbox.GetBottom() };
|
|
|
|
VIEW_RTREE_BASE::Insert( mmin, mmax, aItem );
|
|
}
|
|
|
|
/**
|
|
* Function Remove()
|
|
* Removes an item from the tree. Removal is done by comparing pointers, attepmting to remove a copy
|
|
* of the item will fail.
|
|
*/
|
|
void Remove( VIEW_ITEM* aItem )
|
|
{
|
|
// const BOX2I& bbox = aItem->ViewBBox();
|
|
|
|
// FIXME: use cached bbox or ptr_map to speed up pointer <-> node lookups.
|
|
const int mmin[2] = { INT_MIN, INT_MIN };
|
|
const int mmax[2] = { INT_MAX, INT_MAX };
|
|
|
|
VIEW_RTREE_BASE::Remove( mmin, mmax, aItem );
|
|
}
|
|
|
|
/**
|
|
* Function Query()
|
|
* Executes a function object aVisitor for each item whose bounding box intersects
|
|
* with aBounds.
|
|
*/
|
|
template <class Visitor>
|
|
void Query( const BOX2I& aBounds, Visitor& aVisitor ) // const
|
|
{
|
|
int mmin[2] = { aBounds.GetX(), aBounds.GetY() };
|
|
int mmax[2] = { aBounds.GetRight(), aBounds.GetBottom() };
|
|
|
|
// We frequently use the maximum bounding box to recache all items
|
|
// or for any item that overflows the integer width limits of BBOX2I
|
|
// in this case, we search the full rtree whose bounds are absolute
|
|
// coordinates rather than relative
|
|
BOX2I max_box;
|
|
max_box.SetMaximum();
|
|
|
|
if( aBounds == max_box )
|
|
{
|
|
mmin[0] = mmin[1] = INT_MIN;
|
|
mmax[0] = mmax[1] = INT_MAX;
|
|
}
|
|
|
|
VIEW_RTREE_BASE::Search( mmin, mmax, aVisitor );
|
|
}
|
|
|
|
private:
|
|
};
|
|
} // namespace KIGFX
|
|
|
|
#endif
|