85 lines
3.2 KiB
C#
85 lines
3.2 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 OpenSimulator 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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using System;
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using OpenSim.Region.Framework.Interfaces;
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namespace OpenSim.Region.CoreModules.World.Terrain.PaintBrushes
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{
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public class LowerSphere : ITerrainPaintableEffect
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{
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#region ITerrainPaintableEffect Members
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public void PaintEffect(ITerrainChannel map, bool[,] mask, double rx, double ry, double rz, double strength, double duration)
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{
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int s = (int) (Math.Pow(2, strength) + 0.5);
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int x;
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int xFrom = (int)(rx-s+0.5);
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int xTo = (int)(rx+s+0.5) + 1;
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int yFrom = (int)(ry-s+0.5);
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int yTo = (int)(ry+s+0.5) + 1;
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if (xFrom < 0)
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xFrom = 0;
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if (yFrom < 0)
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yFrom = 0;
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if (xTo > map.Width)
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xTo = map.Width;
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if (yTo > map.Width)
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yTo = map.Width;
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for (x = xFrom; x < xTo; x++)
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{
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int y;
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for (y = yFrom; y < yTo; y++)
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{
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if (!mask[x,y])
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continue;
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// Calculate a cos-sphere and add it to the heighmap
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double r = Math.Sqrt((x-rx) * (x-rx) + ((y-ry) * (y-ry)));
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double z = Math.Cos(r * Math.PI / (s * 2));
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if (z > 0.0)
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{
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double newz = map[x, y] - z * duration;
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if (newz < 0.0)
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map[x, y] = 0.0;
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else
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map[x, y] = newz;
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}
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}
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}
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}
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#endregion
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}
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}
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