110 lines
4.0 KiB
C#
110 lines
4.0 KiB
C#
/*
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* Copyright (c) Contributors, http://www.openmetaverse.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;
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using System.Collections.Generic;
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using System.Text;
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namespace libTerrain
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{
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partial class Channel
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{
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/// <summary>
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/// Produces a set of coordinates defined by an edge point. Eg - 0 = 0,0. 256 = 0,256. 512 = 256,256
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/// Assumes a 256^2 heightmap. This needs fixing for input values of w,h
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/// </summary>
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/// <param name="val"></param>
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/// <param name="w"></param>
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/// <param name="h"></param>
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/// <returns></returns>
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private int[] RadialEdge256(int val)
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{
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// Four cases:
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// 1. 000..255 return 0,val
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// 2. 256..511 return val - 256,255
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// 3. 512..767 return 255, val - 511
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// 4. 768..1023 return val - 768,0
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int[] ret = new int[2];
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if (val < 256)
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{
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ret[0] = 0;
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ret[1] = val;
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return ret;
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}
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if (val < 512)
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{
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ret[0] = (val % 256);
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ret[1] = 255;
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return ret;
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}
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if (val < 768)
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{
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ret[0] = 255;
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ret[1] = 255 - (val % 256);
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return ret;
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}
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if (val < 1024)
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{
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ret[0] = 255 - (val % 256);
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ret[1] = 255;
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return ret;
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}
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throw new Exception("Out of bounds parameter (val)");
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}
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public void Fracture(int number, double scalemin, double scalemax)
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{
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Random rand = new Random(seed);
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for (int i = 0; i < number; i++)
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{
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int[] a, b;
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a = RadialEdge256(rand.Next(1023)); // TODO: Broken
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b = RadialEdge256(rand.Next(1023)); // TODO: Broken
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double z = rand.NextDouble();
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for (int x = 0; x < w; x++)
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{
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for (int y = 0; y < h; y++)
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{
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double miny = Tools.linearInterpolate(a[1], b[1], (double)x / (double)w);
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if (y > miny)
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{
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map[x, y] += Tools.linearInterpolate(scalemin, scalemax, z);
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}
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}
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}
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}
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Normalise();
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}
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}
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} |