Source:NetHack 3.6.0/include/qt clust.h

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/* NetHack 3.6	qt_clust.h	$NHDT-Date: 1432512779 2015/05/25 00:12:59 $  $NHDT-Branch: master $:$NHDT-Revision: 1.8 $ */
/* Copyright (c) Warwick Allison, 1999. */
/* NetHack may be freely redistributed.  See license for details. */

#ifndef clusterizer_H
#define clusterizer_H

#include <qrect.h>

class Clusterizer
{
public:
Clusterizer(int maxclusters);
~Clusterizer();

void add(int x, int y); // 1x1 rectangle (point)
void add(int x, int y, int w, int h);
void add(const QRect &rect);

void clear();
int
clusters()
{
return count;
}
const QRect &operator[](int i);

private:
QRect *cluster;
int count;
const int max;
};

#endif