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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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 OpenSim Project 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 DEVELOPERS ``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 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.
* 
*/
using System;
using System.IO;
using System.Drawing;
using OpenSim.Region.Environment.Interfaces;

namespace OpenSim.Region.Environment.Modules.Terrain.FileLoaders
{
    public class JPEG : ITerrainLoader
    {
        #region ITerrainLoader Members

        public ITerrainChannel LoadFile(string filename)
        {
            throw new NotImplementedException();
        }

        private Bitmap CreateBitmapFromMap(ITerrainChannel map)
        {
            Bitmap gradientmapLd = new Bitmap("defaultstripe.png");

            int pallete = gradientmapLd.Height;

            Bitmap bmp = new Bitmap(map.Width, map.Height);
            Color[] colours = new Color[pallete];

            for (int i = 0; i < pallete; i++)
            {
                colours[i] = gradientmapLd.GetPixel(0, i);
            }

            for (int y = 0; y < map.Height; y++)
            {
                for (int x = 0; x < map.Width; x++)
                {
                    // 512 is the largest possible height before colours clamp
                    int colorindex = (int)(Math.Max(Math.Min(1.0, map[x, y] / 512.0), 0.0) * (pallete - 1));
                    bmp.SetPixel(x, map.Height - y - 1, colours[colorindex]);
                }
            }
            return bmp;
        }

        public void SaveFile(string filename, ITerrainChannel map)
        {
            Bitmap colours = CreateBitmapFromMap(map);

            colours.Save(filename, System.Drawing.Imaging.ImageFormat.Jpeg);
        }

        #endregion
    }
}