142 lines
4.7 KiB
C#
142 lines
4.7 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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enum NeighbourSystem
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{
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Moore,
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VonNeumann
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};
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private int[] Neighbours(NeighbourSystem type, int index)
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{
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int[] coord = new int[2];
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index++;
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switch (type)
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{
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case NeighbourSystem.Moore:
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switch (index)
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{
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case 1:
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coord[0] = -1;
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coord[1] = -1;
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break;
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case 2:
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coord[0] = -0;
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coord[1] = -1;
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break;
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case 3:
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coord[0] = +1;
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coord[1] = -1;
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break;
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case 4:
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coord[0] = -1;
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coord[1] = -0;
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break;
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case 5:
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coord[0] = -0;
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coord[1] = -0;
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break;
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case 6:
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coord[0] = +1;
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coord[1] = -0;
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break;
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case 7:
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coord[0] = -1;
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coord[1] = +1;
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break;
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case 8:
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coord[0] = -0;
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coord[1] = +1;
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break;
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case 9:
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coord[0] = +1;
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coord[1] = +1;
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break;
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default:
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break;
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}
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break;
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case NeighbourSystem.VonNeumann:
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switch (index)
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{
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case 1:
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coord[0] = 0;
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coord[1] = -1;
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break;
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case 2:
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coord[0] = -1;
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coord[1] = 0;
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break;
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case 3:
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coord[0] = +1;
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coord[1] = 0;
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break;
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case 4:
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coord[0] = 0;
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coord[1] = +1;
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break;
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case 5:
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coord[0] = -0;
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coord[1] = -0;
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break;
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default:
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break;
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}
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break;
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}
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return coord;
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}
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}
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}
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