GB/GB_BitArray.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Mark Elendt
 *      Side Effects
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        Geometry library (C++)
 *
 * COMMENTS:    Bit Array class used for groups in GB
 *
 */

#ifndef __GB_BitArray_h__
#define __GB_BitArray_h__

#include "GB_API.h"

class GB_API GB_BitArray
{
public:
     GB_BitArray(int size = 0);
    ~GB_BitArray();

    void        resize(int oldsize, int newsize);

    int         isSet(unsigned offset, unsigned mask) const
                {
                    return (int)(myBits[offset] & mask);
                }
    void        setBit(unsigned offset, unsigned mask)
                {
                    myBits[offset] |= mask;
                }
    void        clearBit(unsigned offset, unsigned mask)
                {
                    myBits[offset] &= ~mask;
                }
    void        andMask(unsigned offset, unsigned mask)
                {
                    myBits[offset] &= mask;
                }
    void        toggleBit(unsigned offset, unsigned mask)
                {
                    myBits[offset] ^= mask;
                }
    void        setAllBits(int size);
    void        clearAllBits(int size);
    int         isAnyBitSet(int size);

    void        andBits(const GB_BitArray &bits, int size);
    void        orBits(const GB_BitArray &bits, int size);
    void        xorBits(const GB_BitArray &bits, int size);
    void        minus(const GB_BitArray &bits, int size);
    void        copy(const GB_BitArray &bits, int size);

    int         isEqual(const GB_BitArray &bits, int size) const;
    int         anyShared(const GB_BitArray &bits, int size) const;

private:
    unsigned    *myBits;
};

#endif

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