From 2b42ea0a429c722bd7c5c67d3815c2ddc8399e78 Mon Sep 17 00:00:00 2001 From: MW Date: Wed, 25 Jul 2007 18:19:38 +0000 Subject: Start of the OpenSim library , for now only contains a few textures. --- .../libTerrainBSD/Channel/Editing/Flatten.cs | 296 ++++++++++----------- 1 file changed, 148 insertions(+), 148 deletions(-) (limited to 'OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Editing/Flatten.cs') diff --git a/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Editing/Flatten.cs b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Editing/Flatten.cs index 48f02e8..713ae23 100644 --- a/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Editing/Flatten.cs +++ b/OpenSim/Region/Terrain.BasicTerrain/libTerrainBSD/Channel/Editing/Flatten.cs @@ -1,149 +1,149 @@ -/* -* 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 - { - /// - /// Flattens the area underneath rx,ry by moving it to the average of the area. Uses a spherical mask provided by the raise() function. - /// - /// The X coordinate of the terrain mask - /// The Y coordinate of the terrain mask - /// The size of the terrain mask - /// The scale of the terrain mask - public void Flatten(double rx, double ry, double size, double amount) - { - FlattenSlow(rx, ry, size, amount); - } - - private void FlattenSlow(double rx, double ry, double size, double amount) - { - // Generate the mask - Channel temp = new Channel(w, h); - temp.Fill(0); - temp.Raise(rx, ry, size, amount); - temp.Normalise(); - double total_mod = temp.Sum(); - - // Establish the average height under the area - Channel newmap = new Channel(w, h); - newmap.map = (double[,])map.Clone(); - - newmap *= temp; - - double total_terrain = newmap.Sum(); - double avg_height = total_terrain / total_mod; - - // Create a flat terrain using the average height - Channel flat = new Channel(w, h); - flat.Fill(avg_height); - - // Blend the current terrain with the average height terrain - // using the "raised" empty terrain as a mask - Blend(flat, temp); - - } - - private void FlattenFast(double rx, double ry, double size, double amount) - { - int x, y; - double avg = 0; - double div = 0; - - int minX = Math.Max(0, (int)(rx - (size + 1))); - int maxX = Math.Min(w, (int)(rx + (size + 1))); - int minY = Math.Max(0, (int)(ry - (size + 1))); - int maxY = Math.Min(h, (int)(ry + (size + 1))); - - for (x = minX; x < maxX; x++) - { - for (y = minY; y < maxY; y++) - { - double z = size; - z *= z; - z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); - - if (z < 0) - z = 0; - - avg += z * amount; - div += z; - } - } - - double height = avg / div; - - for (x = minX; x < maxX; x++) - { - for (y = minY; y < maxY; y++) - { - double z = size; - z *= z; - z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); - - if (z < 0) - z = 0; - - Set(x, y, Tools.linearInterpolate(map[x, y], height, z)); - } - } - } - - public void Flatten(Channel mask, double amount) - { - // Generate the mask - Channel temp = mask * amount; - temp.Clip(0, 1); // Cut off out-of-bounds values - - double total_mod = temp.Sum(); - - // Establish the average height under the area - Channel map = new Channel(w, h); - map.map = (double[,])this.map.Clone(); - - map *= temp; - - double total_terrain = map.Sum(); - double avg_height = total_terrain / total_mod; - - // Create a flat terrain using the average height - Channel flat = new Channel(w, h); - flat.Fill(avg_height); - - // Blend the current terrain with the average height terrain - // using the "raised" empty terrain as a mask - Blend(flat, temp); - } - } +/* +* 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 + { + /// + /// Flattens the area underneath rx,ry by moving it to the average of the area. Uses a spherical mask provided by the raise() function. + /// + /// The X coordinate of the terrain mask + /// The Y coordinate of the terrain mask + /// The size of the terrain mask + /// The scale of the terrain mask + public void Flatten(double rx, double ry, double size, double amount) + { + FlattenSlow(rx, ry, size, amount); + } + + private void FlattenSlow(double rx, double ry, double size, double amount) + { + // Generate the mask + Channel temp = new Channel(w, h); + temp.Fill(0); + temp.Raise(rx, ry, size, amount); + temp.Normalise(); + double total_mod = temp.Sum(); + + // Establish the average height under the area + Channel newmap = new Channel(w, h); + newmap.map = (double[,])map.Clone(); + + newmap *= temp; + + double total_terrain = newmap.Sum(); + double avg_height = total_terrain / total_mod; + + // Create a flat terrain using the average height + Channel flat = new Channel(w, h); + flat.Fill(avg_height); + + // Blend the current terrain with the average height terrain + // using the "raised" empty terrain as a mask + Blend(flat, temp); + + } + + private void FlattenFast(double rx, double ry, double size, double amount) + { + int x, y; + double avg = 0; + double div = 0; + + int minX = Math.Max(0, (int)(rx - (size + 1))); + int maxX = Math.Min(w, (int)(rx + (size + 1))); + int minY = Math.Max(0, (int)(ry - (size + 1))); + int maxY = Math.Min(h, (int)(ry + (size + 1))); + + for (x = minX; x < maxX; x++) + { + for (y = minY; y < maxY; y++) + { + double z = size; + z *= z; + z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); + + if (z < 0) + z = 0; + + avg += z * amount; + div += z; + } + } + + double height = avg / div; + + for (x = minX; x < maxX; x++) + { + for (y = minY; y < maxY; y++) + { + double z = size; + z *= z; + z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry)); + + if (z < 0) + z = 0; + + Set(x, y, Tools.linearInterpolate(map[x, y], height, z)); + } + } + } + + public void Flatten(Channel mask, double amount) + { + // Generate the mask + Channel temp = mask * amount; + temp.Clip(0, 1); // Cut off out-of-bounds values + + double total_mod = temp.Sum(); + + // Establish the average height under the area + Channel map = new Channel(w, h); + map.map = (double[,])this.map.Clone(); + + map *= temp; + + double total_terrain = map.Sum(); + double avg_height = total_terrain / total_mod; + + // Create a flat terrain using the average height + Channel flat = new Channel(w, h); + flat.Fill(avg_height); + + // Blend the current terrain with the average height terrain + // using the "raised" empty terrain as a mask + Blend(flat, temp); + } + } } \ No newline at end of file -- cgit v1.1