/* * 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.Drawing; using System.Drawing.Imaging; namespace libTerrain { internal class Raster { private Bitmap bmp; /// <summary> /// Creates a new Raster channel for use with bitmap or GDI functions /// </summary> /// <param name="width">Width in pixels</param> /// <param name="height">Height in pixels</param> public Raster(int width, int height) { bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb); } /// <summary> /// Converts a raster image to a channel by averaging the RGB values to a single 0..1 heightmap /// </summary> /// <returns>A libTerrain Channel</returns> public Channel ToChannel() { Channel chan = new Channel(bmp.Width, bmp.Height); int x, y; for (x = 0; x < bmp.Width; x++) { for (y = 0; y < bmp.Height; y++) { Color val = bmp.GetPixel(x, y); chan.map[x, y] = (((double) val.R + (double) val.G + (double) val.B)/3.0)/255.0; } } return chan; } /// <summary> /// Draws a piece of text into the specified raster /// </summary> /// <param name="txt">The text string to print</param> /// <param name="font">The font to use to draw the specified image</param> /// <param name="size">Font size (points) to use</param> public void DrawText(string txt, string font, double size) { Rectangle area = new Rectangle(0, 0, 256, 256); StringFormat sf = new StringFormat(); sf.Alignment = StringAlignment.Center; sf.LineAlignment = StringAlignment.Center; Graphics gd = Graphics.FromImage(bmp); gd.DrawString(txt, new Font(font, (float) size), new SolidBrush(Color.White), area, sf); } } }