MercuryMatrixStack.h

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#ifndef _MERCURY_MATRIX_STACK_H
#define _MERCURY_MATRIX_STACK_H

#include "MercuryUtil.h"
#include "MercuryMatrix.h"

static const unsigned int MAXMATRIXSTACKSIZE = 100;

class MercuryMatrixStack
{
public:
    MercuryMatrixStack() { m_iMatrixDepth = 0;  } 
    inline void Push() { ASSERT( m_iMatrixDepth < MAXMATRIXSTACKSIZE ); m_vMatrix[m_iMatrixDepth+1] = m_vMatrix[m_iMatrixDepth]; ++m_iMatrixDepth; } 
    inline void Pop() { ASSERT( m_iMatrixDepth ); --m_iMatrixDepth; }; 
    inline void LoadIdentity() { m_vMatrix[m_iMatrixDepth].Identity(); }
    inline void LoadMatrix( const MercuryMatrix& m) { m_vMatrix[m_iMatrixDepth] = m; }
    inline const MercuryMatrix& GetTop() const { return m_vMatrix[m_iMatrixDepth]; }
    inline MercuryMatrix& GetTop() { return  m_vMatrix[m_iMatrixDepth]; }

private:
    MercuryMatrix m_vMatrix[MAXMATRIXSTACKSIZE];
    unsigned int m_iMatrixDepth;
};

#endif

/* 
 * Copyright (c) 2006 Joshua Allen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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