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86 lines
3.5 KiB
C#
86 lines
3.5 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSim Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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using System.Drawing;
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using System.Drawing.Imaging;
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namespace libTerrain
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{
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internal class Raster
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{
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private Bitmap bmp;
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/// <summary>
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/// Creates a new Raster channel for use with bitmap or GDI functions
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/// </summary>
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/// <param name="width">Width in pixels</param>
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/// <param name="height">Height in pixels</param>
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public Raster(int width, int height)
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{
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bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
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}
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/// <summary>
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/// Converts a raster image to a channel by averaging the RGB values to a single 0..1 heightmap
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/// </summary>
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/// <returns>A libTerrain Channel</returns>
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public Channel ToChannel()
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{
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Channel chan = new Channel(bmp.Width, bmp.Height);
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int x, y;
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for (x = 0; x < bmp.Width; x++)
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{
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for (y = 0; y < bmp.Height; y++)
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{
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Color val = bmp.GetPixel(x, y);
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chan.map[x, y] = (((double) val.R + (double) val.G + (double) val.B)/3.0)/255.0;
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}
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}
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return chan;
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}
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/// <summary>
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/// Draws a piece of text into the specified raster
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/// </summary>
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/// <param name="txt">The text string to print</param>
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/// <param name="font">The font to use to draw the specified image</param>
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/// <param name="size">Font size (points) to use</param>
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public void DrawText(string txt, string font, double size)
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{
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Rectangle area = new Rectangle(0, 0, 256, 256);
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StringFormat sf = new StringFormat();
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sf.Alignment = StringAlignment.Center;
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sf.LineAlignment = StringAlignment.Center;
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Graphics gd = Graphics.FromImage(bmp);
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gd.DrawString(txt, new Font(font, (float) size), new SolidBrush(Color.White), area, sf);
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}
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}
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} |