OpenSim-Test/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/File.cs

/*
 * 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.Drawing;
using System.Drawing.Imaging;

namespace libTerrain
{
    partial class Channel
    {
        public Channel LoadImage(string filename)
        {
            SetDiff();

            Bitmap bit = new Bitmap(filename);
            Channel chan = new Channel(bit.Width, bit.Height);

            int x, y;
            for (x = 0; x < bit.Width; x++)
            {
                for (y = 0; y < bit.Height; y++)
                {
                    Color val = bit.GetPixel(x, y);
                    chan.map[x, y] = (((double) val.R + (double) val.G + (double) val.B)/3.0)/255.0;
                }
            }

            return chan;
        }

        public void SaveImage(string filename)
        {
            Channel outmap = Copy();
            outmap.Normalise();

            Bitmap bit = new Bitmap(w, h, PixelFormat.Format24bppRgb);
            int x, y;
            for (x = 0; x < w; x++)
            {
                for (y = 0; y < h; y++)
                {
                    int val = Math.Min(255, (int) (outmap.map[x, y]*255));
                    Color col = Color.FromArgb(val, val, val);
                    bit.SetPixel(x, y, col);
                }
            }
            bit.Save(filename);
        }
    }
}