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