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- /*
- * Copyright (c) Contributors, http://opensimulator.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 OpenSimulator 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 OpenSim.Region.Framework.Interfaces;
- using OpenSim.Region.Framework.Scenes;
- namespace OpenSim.Region.CoreModules.World.Terrain.PaintBrushes
- {
- public class SmoothSphere : ITerrainPaintableEffect
- {
- #region ITerrainPaintableEffect Members
- public void PaintEffect(ITerrainChannel map, bool[,] mask, float rx, float ry, float rz,
- float size, float strength, int startX, int endX, int startY, int endY)
- {
- float distancefactor;
- float dx2;
- float[,] tweak = new float[endX - startX + 1, endY - startY + 1];
- int ssize = (int)(size + 0.5);
- if(ssize > 4)
- ssize = 4;
- size *= size;
- if (strength > 1.0f)
- strength = 1.0f;
- // compute delta map
- for (int x = startX, i = 0; x <= endX; x++, i++)
- {
- dx2 = (x - rx) * (x - rx);
- for (int y = startY, j = 0; y <= endY; y++, j++)
- {
- if (!mask[x, y])
- continue;
- distancefactor = (dx2 + (y - ry) * (y - ry)) / size;
- if (distancefactor <= 1.0f)
- {
- distancefactor = strength * (1.0f - distancefactor);
- float average = 0f;
- int avgsteps = 0;
- for (int n = x - ssize; n <= x + ssize; ++n)
- {
- if(n >= 0 && n < map.Width)
- {
- for (int l = y - ssize; l <= y + ssize; ++l)
- {
- if (l >= 0 && l < map.Height)
- {
- avgsteps++;
- average += map[n, l];
- }
- }
- }
- }
- average /= avgsteps;
- tweak[i, j] = distancefactor * (map[x, y] - average);
- }
- }
- }
- // blend in map
- for (int x = startX, i = 0; x <= endX; x++, i++)
- {
- for (int y = startY, j = 0; y <= endY; y++, j++)
- {
- float tz = tweak[i, j];
- if(tz != 0.0)
- {
- float newz = map[x, y] - tz;
- if (newz > 0.0)
- map[x, y] = newz;
- }
- }
- }
- }
- #endregion
- }
- }
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