From c5d1f87cd202663f2f26ca90a973d9763070dda3 Mon Sep 17 00:00:00 2001 From: Adam Frisby Date: Mon, 3 Mar 2008 08:35:59 +0000 Subject: * Removed and sorted using clauses in a number of files. * Cleaned up ITerrainChannel * Implemented Raise, Lower, Smooth, Flatten, Noise Terrain Paint Brushes * Implemented Raise, Lower, Smooth, Flatten, Noise Terrain Fill Brushes * Implemented Export functionality for RAW32 terrain loader * Implemented Import/Export for SLRAW terrain loader * Implemented Export for JPEG terrain loader --- .../Modules/Terrain/PaintBrushes/SmoothSphere.cs | 130 +++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/SmoothSphere.cs (limited to 'OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/SmoothSphere.cs') diff --git a/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/SmoothSphere.cs b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/SmoothSphere.cs new file mode 100644 index 0000000..076b3cc --- /dev/null +++ b/OpenSim/Region/Environment/Modules/Terrain/PaintBrushes/SmoothSphere.cs @@ -0,0 +1,130 @@ +/* +* 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 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 OpenSim.Region.Environment.Interfaces; + +namespace OpenSim.Region.Environment.Modules.Terrain.PaintBrushes +{ + public class SmoothSphere : ITerrainPaintableEffect + { + private double SphericalFactor(double x, double y, double rx, double ry, double size) + { + double z = size * size - ((x - rx) * (x - rx) + (y - ry) * (y - ry)); + return z; + } + + private double GetBilinearInterpolate(double x, double y, ITerrainChannel map) + { + int w = map.Width; + int h = map.Height; + + if (x > w - 2.0) + x = w - 2.0; + if (y > h - 2.0) + y = h - 2.0; + if (x < 0.0) + x = 0.0; + if (y < 0.0) + y = 0.0; + + int stepSize = 1; + double h00 = map[(int)x, (int)y]; + double h10 = map[(int)x + stepSize, (int)y]; + double h01 = map[(int)x, (int)y + stepSize]; + double h11 = map[(int)x + stepSize, (int)y + stepSize]; + double h1 = h00; + double h2 = h10; + double h3 = h01; + double h4 = h11; + double a00 = h1; + double a10 = h2 - h1; + double a01 = h3 - h1; + double a11 = h1 - h2 - h3 + h4; + double partialx = x - (int)x; + double partialz = y - (int)y; + double hi = a00 + (a10 * partialx) + (a01 * partialz) + (a11 * partialx * partialz); + return hi; + } + + #region ITerrainPaintableEffect Members + + public void PaintEffect(ITerrainChannel map, double rx, double ry, double strength) + { + int x, y; + double[,] tweak = new double[map.Width, map.Height]; + + double n, l; + double area = strength; + double step = strength / 4.0; + + // compute delta map + for (x = 0; x < map.Width; x++) + { + for (y = 0; y < map.Height; y++) + { + double z = SphericalFactor(x, y, rx, ry, strength); + + if (z > 0) // add in non-zero amount + { + double average = 0.0; + int avgsteps = 0; + + for (n = 0.0 - area; n < area; n += step) + { + for (l = 0.0 - area; l < area; l += step) + { + avgsteps++; + average += GetBilinearInterpolate(x + n, y + l, map); + } + } + tweak[x, y] = average / avgsteps; + } + } + } + // blend in map + for (x = 0; x < map.Width; x++) + { + for (y = 0; y < map.Height; y++) + { + double z = SphericalFactor(x, y, rx, ry, strength); + + if (z > 0) // add in non-zero amount + { + double da = z; + double a = (map[x, y] - tweak[x, y]) * da; + double newz = map[x, y] - a; + + if (newz > 0.0) + map[x, y] = newz; + } + } + } + } + + #endregion + } +} \ No newline at end of file -- cgit v1.1