/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

// Description : 2D look up table for surfaces


#ifndef _SURFACES_LOOKUP_TABLE_H_
#define _SURFACES_LOOKUP_TABLE_H_

#pragma once

namespace MaterialEffectsUtils
{
    template <typename T>
    struct SSurfacesLookupTable
    {
        void Create(size_t rows, size_t cols)
        {
            SAFE_DELETE_ARRAY(m_pData);

            m_nRows = rows;
            m_nCols = cols;
            m_pData = new T[m_nRows * m_nCols];

            memset(m_pData, 0, m_nRows * m_nCols * sizeof(T));
        }

        SSurfacesLookupTable()
            : m_pData(0)
            , m_nRows(0)
            , m_nCols(0)
        {
        }

        ~SSurfacesLookupTable()
        {
            SAFE_DELETE_ARRAY(m_pData);
        }

        void Free()
        {
            SAFE_DELETE_ARRAY(m_pData);
        }

        T* operator[] (const size_t row) const
        {
            CRY_ASSERT (m_pData);
            CRY_ASSERT ((row >= 0) && (row < m_nRows));
            return &m_pData[row * m_nCols];
        }

        T& operator() (const size_t row, const size_t col) const
        {
            CRY_ASSERT (m_pData);
            CRY_ASSERT ((row >= 0) && (row < m_nRows) && (col >= 0) && (col < m_nCols));
            return m_pData[row * m_nCols + col];
        }

        T GetValue(const size_t row, const size_t col, const T& defaultValue) const
        {
            return (m_pData && row >= 0 && row < m_nRows && col >= 0 && col < m_nCols) ? m_pData[row * m_nCols + col] : defaultValue;
        }
        void GetMemoryUsage(ICrySizer* s) const
        {
            s->AddObject(m_pData, sizeof(T) * m_nRows * m_nCols);
        }

        T* m_pData;
        size_t m_nRows;
        size_t m_nCols;
    };
}

#endif //_SURFACES_LOOKUP_TABLE_H_