997 lines
36 KiB
C#
997 lines
36 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.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using libTerrain;
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using OpenJPEGNet;
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namespace OpenSim.Region.Terrain
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{
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public class TerrainCommand
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{
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public virtual bool run(string[] cmdargs, ref string output)
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{
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return false;
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}
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public string args;
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public string help;
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}
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public class TerrainEngine
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{
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/// <summary>
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/// Plugin library for scripts
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/// </summary>
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public FilterHost customFilters = new FilterHost();
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/// <summary>
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/// A [normally] 256x256 heightmap
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/// </summary>
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public Channel heightmap;
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/// <summary>
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/// A copy of heightmap at the last save point (for reverting)
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/// </summary>
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public Channel revertmap;
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/// <summary>
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/// Water heightmap (needs clientside mods to work)
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/// </summary>
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public Channel watermap;
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/// <summary>
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/// Max amount the terrain can be raised from the revert parameters
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/// </summary>
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public double maxRaise = 500.0;
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/// <summary>
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/// Min amount the terrain can be lowered from the revert parameters
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/// </summary>
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public double minLower = 500.0;
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/// <summary>
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/// Whether or not the terrain has been modified since it was last saved and sent to the Physics engine.
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/// Counts the number of modifications since the last save. (0 = Untainted)
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/// </summary>
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public int tainted;
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int w, h;
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/// <summary>
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/// Generate a new TerrainEngine instance and creates a new heightmap
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/// </summary>
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public TerrainEngine()
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{
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w = 256;
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h = 256;
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heightmap = new Channel(w, h);
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tainted++;
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}
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/// <summary>
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/// Checks to make sure the terrain is within baked values +/- maxRaise/minLower
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/// </summary>
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public void CheckHeightValues()
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{
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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if ((heightmap.get(x, y) > revertmap.get(x, y) + maxRaise))
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{
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heightmap.map[x, y] = revertmap.get(x, y) + maxRaise;
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}
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if ((heightmap.get(x, y) > revertmap.get(x, y) - minLower))
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{
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heightmap.map[x, y] = revertmap.get(x, y) - minLower;
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}
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}
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}
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}
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/// <summary>
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/// Converts the heightmap to a 65536 value 1D floating point array
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/// </summary>
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/// <returns>A float[65536] array containing the heightmap</returns>
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public float[] GetHeights1D()
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{
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float[] heights = new float[w * h];
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int i;
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for (i = 0; i < w * h; i++)
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{
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heights[i] = (float)heightmap.map[i / w, i % w];
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}
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return heights;
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}
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/// <summary>
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/// Converts the heightmap to a 256x256 value 2D floating point array.
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/// </summary>
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/// <returns>An array of 256,256 values containing the heightmap</returns>
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public float[,] GetHeights2D()
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{
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float[,] heights = new float[w, h];
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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heights[x, y] = (float)heightmap.map[x, y];
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}
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}
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return heights;
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}
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/// <summary>
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/// Converts the heightmap to a 256x256 value 2D floating point array. Double precision version.
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/// </summary>
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/// <returns>An array of 256,256 values containing the heightmap</returns>
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public double[,] GetHeights2DD()
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{
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return heightmap.map;
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}
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/// <summary>
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/// Imports a 1D floating point array into the 2D heightmap array
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/// </summary>
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/// <param name="heights">The array to import (must have 65536 members)</param>
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public void GetHeights1D(float[] heights)
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{
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int i;
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for (i = 0; i < w * h; i++)
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{
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heightmap.map[i / w, i % w] = heights[i];
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}
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tainted++;
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}
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/// <summary>
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/// Loads a 2D array of values into the heightmap
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/// </summary>
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/// <param name="heights">An array of 256,256 float values</param>
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public void SetHeights2D(float[,] heights)
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{
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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heightmap.set(x, y, (double)heights[x, y]);
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}
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}
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SaveRevertMap();
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tainted++;
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}
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/// <summary>
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/// Loads a 2D array of values into the heightmap (Double Precision Version)
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/// </summary>
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/// <param name="heights">An array of 256,256 float values</param>
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public void SetHeights2D(double[,] heights)
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{
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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heightmap.set(x, y, heights[x, y]);
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}
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}
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SaveRevertMap();
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tainted++;
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}
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/// <summary>
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/// Swaps the two heightmap buffers (the 'revert map' and the heightmap)
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/// </summary>
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public void SwapRevertMaps()
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{
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Channel backup = heightmap.copy();
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heightmap = revertmap;
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revertmap = backup;
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}
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/// <summary>
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/// Saves the current heightmap into the revertmap
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/// </summary>
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public void SaveRevertMap()
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{
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revertmap = heightmap.copy();
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}
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/// <summary>
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/// Processes a terrain-specific command
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/// </summary>
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/// <param name="args">Commandline arguments (space seperated)</param>
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/// <param name="resultText">Reference that returns error or help text if returning false</param>
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/// <returns>If the operation was successful (if not, the error is placed into resultText)</returns>
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public bool RunTerrainCmd(string[] args, ref string resultText, string simName)
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{
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string command = args[0];
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try
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{
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switch (command)
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{
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case "help":
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resultText += "terrain regenerate - rebuilds the sims terrain using a default algorithm\n";
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resultText += "terrain hills <type> <number of hills> <min height> <max height> <island t/f> <additive t/f> <noisy t/f>\n";
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resultText += " type should be spheres, blocks, cones, or squared\n";
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resultText += "terrain voronoi <points> <blocksize> - generates a worley fractal with X points per block";
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resultText += "terrain seed <seed> - sets the random seed value to <seed>\n";
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resultText += "terrain load <type> <filename> - loads a terrain from disk, type can be 'F32', 'F64', 'RAW' or 'IMG'\n";
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resultText += "terrain save <type> <filename> - saves a terrain to disk, type can be 'F32', 'F64', 'PNG', 'RAW' or 'HIRAW'\n";
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resultText += "terrain save grdmap <filename> <gradient map> - creates a PNG snapshot of the region using a named gradient map\n";
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resultText += "terrain rescale <min> <max> - rescales a terrain to be between <min> and <max> meters high\n";
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resultText += "terrain erode aerobic <windspeed> <pickupmin> <dropmin> <carry> <rounds> <lowest>\n";
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resultText += "terrain erode thermal <talus> <rounds> <carry>\n";
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resultText += "terrain multiply <val> - multiplies a terrain by <val>\n";
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resultText += "terrain revert - reverts the terrain to the stored original\n";
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resultText += "terrain bake - saves the current terrain into the revert map\n";
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resultText += "terrain csfilter <filename.cs> - loads a new filter from the specified .cs file\n";
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resultText += "terrain jsfilter <filename.js> - loads a new filter from the specified .js file\n";
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foreach (KeyValuePair<string, ITerrainFilter> filter in customFilters.filters)
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{
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resultText += filter.Value.Help();
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}
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return false;
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case "revert":
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SwapRevertMaps();
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SaveRevertMap();
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break;
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case "bake":
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SaveRevertMap();
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break;
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case "seed":
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SetSeed(Convert.ToInt32(args[1]));
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break;
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case "erode":
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return ConsoleErosion(args, ref resultText);
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case "voronoi":
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double[] c = new double[2];
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c[0] = -1;
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c[1] = 1;
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heightmap.voronoiDiagram(Convert.ToInt32(args[1]), Convert.ToInt32(args[2]), c);
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break;
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case "hills":
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return ConsoleHills(args, ref resultText);
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case "regenerate":
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HillsGenerator();
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break;
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case "rescale":
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SetRange(Convert.ToSingle(args[1]), Convert.ToSingle(args[2]));
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break;
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case "multiply":
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heightmap *= Convert.ToDouble(args[1]);
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tainted++;
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break;
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case "load":
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args[2].Replace("%name%", simName);
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switch (args[1].ToLower())
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{
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case "f32":
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LoadFromFileF32(args[2]);
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break;
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case "f64":
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LoadFromFileF64(args[2]);
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break;
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case "raw":
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LoadFromFileSLRAW(args[2]);
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break;
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case "img":
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heightmap.loadImage(args[2]);
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return false;
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default:
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resultText = "Unknown image or data format";
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return false;
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}
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break;
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case "save":
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args[2].Replace("%name%", simName);
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switch (args[1].ToLower())
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{
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case "f32":
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WriteToFileF32(args[2]);
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break;
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case "f64":
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WriteToFileF64(args[2]);
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break;
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case "grdmap":
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ExportImage(args[2], args[3]);
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break;
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case "png":
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heightmap.saveImage(args[2]);
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break;
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case "raw":
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WriteToFileRAW(args[2]);
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break;
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case "hiraw":
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WriteToFileHiRAW(args[2]);
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break;
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default:
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resultText = "Unknown image or data format";
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return false;
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}
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break;
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case "csfilter":
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customFilters.LoadFilterCSharp(args[1]);
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break;
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case "jsfilter":
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customFilters.LoadFilterJScript(args[1]);
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break;
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default:
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// Run any custom registered filters
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if (customFilters.filters.ContainsKey(command))
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{
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customFilters.filters[command].Filter(heightmap, args);
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break;
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}
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else
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{
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resultText = "Unknown terrain command";
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return false;
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}
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}
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return true;
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}
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catch (Exception e)
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{
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resultText = "Error running terrain command: " + e.ToString();
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return false;
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}
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}
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private bool ConsoleErosion(string[] args, ref string resultText)
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{
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switch (args[1].ToLower())
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{
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case "aerobic":
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// WindSpeed, PickupMinimum,DropMinimum,Carry,Rounds,Lowest
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heightmap.AerobicErosion(Convert.ToDouble(args[2]), Convert.ToDouble(args[3]), Convert.ToDouble(args[4]), Convert.ToDouble(args[5]), Convert.ToInt32(args[6]), Convert.ToBoolean(args[7]));
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break;
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case "thermal":
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heightmap.thermalWeathering(Convert.ToDouble(args[2]), Convert.ToInt32(args[3]), Convert.ToDouble(args[4]));
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break;
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default:
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resultText = "Unknown erosion type";
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return false;
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}
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return true;
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}
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private bool ConsoleHills(string[] args, ref string resultText)
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{
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Random RandomClass = new Random();
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SetSeed(RandomClass.Next());
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int count;
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double sizeMin;
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double sizeRange;
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bool island;
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bool additive;
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bool noisy;
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if (args.GetLength(0) > 2)
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{
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int.TryParse(args[2].ToString(), out count);
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double.TryParse(args[3].ToString(), out sizeMin);
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double.TryParse(args[4].ToString(), out sizeRange);
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bool.TryParse(args[5].ToString(), out island);
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bool.TryParse(args[6].ToString(), out additive);
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bool.TryParse(args[7].ToString(), out noisy);
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}
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else
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{
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count = 200;
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sizeMin = 20;
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sizeRange = 40;
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island = true;
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additive = true;
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noisy = false;
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}
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switch (args[1].ToLower())
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{
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case "blocks":
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heightmap.hillsBlocks(count, sizeMin, sizeRange, island, additive, noisy);
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break;
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case "cones":
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heightmap.hillsCones(count, sizeMin, sizeRange, island, additive, noisy);
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break;
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case "spheres":
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heightmap.hillsSpheres(count, sizeMin, sizeRange, island, additive, noisy);
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break;
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case "squared":
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heightmap.hillsSquared(count, sizeMin, sizeRange, island, additive, noisy);
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break;
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default:
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resultText = "Unknown hills type";
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return false;
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}
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tainted++;
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return true;
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}
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/// <summary>
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/// Renormalises the array between min and max
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/// </summary>
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/// <param name="min">Minimum value of the new array</param>
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/// <param name="max">Maximum value of the new array</param>
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public void SetRange(float min, float max)
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{
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heightmap.normalise((double)min, (double)max);
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tainted++;
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}
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/// <summary>
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/// Loads a file consisting of 256x256 doubles and imports it as an array into the map.
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/// </summary>
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/// <remarks>TODO: Move this to libTerrain itself</remarks>
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/// <param name="filename">The filename of the double array to import</param>
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public void LoadFromFileF64(string filename)
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{
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FileInfo file = new FileInfo(filename);
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FileStream s = file.Open(FileMode.Open, FileAccess.Read);
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BinaryReader bs = new BinaryReader(s);
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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heightmap.map[x, y] = bs.ReadDouble();
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}
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}
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bs.Close();
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s.Close();
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tainted++;
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}
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/// <summary>
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/// Loads a file consisting of 256x256 floats and imports it as an array into the map.
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/// </summary>
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/// <remarks>TODO: Move this to libTerrain itself</remarks>
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/// <param name="filename">The filename of the float array to import</param>
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public void LoadFromFileF32(string filename)
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{
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FileInfo file = new FileInfo(filename);
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FileStream s = file.Open(FileMode.Open, FileAccess.Read);
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BinaryReader bs = new BinaryReader(s);
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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heightmap.map[x, y] = (double)bs.ReadSingle();
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}
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}
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bs.Close();
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s.Close();
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tainted++;
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}
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/// <summary>
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/// Loads a file formatted in the SL .RAW Format used on the main grid
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/// </summary>
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/// <remarks>This file format stinks and is best avoided.</remarks>
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/// <param name="filename">A path to the .RAW format</param>
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public void LoadFromFileSLRAW(string filename)
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{
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FileInfo file = new FileInfo(filename);
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FileStream s = file.Open(FileMode.Open, FileAccess.Read);
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BinaryReader bs = new BinaryReader(s);
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int x, y;
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for (x = 0; x < w; x++)
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{
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for (y = 0; y < h; y++)
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{
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|
heightmap.map[x, y] = (double)bs.ReadByte() * ((double)bs.ReadByte() / 127.0);
|
|
bs.ReadBytes(11); // Advance the stream to next bytes.
|
|
}
|
|
}
|
|
|
|
bs.Close();
|
|
s.Close();
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes the current terrain heightmap to disk, in the format of a 65536 entry double[] array.
|
|
/// </summary>
|
|
/// <param name="filename">The desired output filename</param>
|
|
public void WriteToFileF64(string filename)
|
|
{
|
|
FileInfo file = new FileInfo(filename);
|
|
FileStream s = file.Open(FileMode.CreateNew, FileAccess.Write);
|
|
BinaryWriter bs = new BinaryWriter(s);
|
|
|
|
int x, y;
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
for (y = 0; y < h; y++)
|
|
{
|
|
bs.Write(heightmap.get(x, y));
|
|
}
|
|
}
|
|
|
|
bs.Close();
|
|
s.Close();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes the current terrain heightmap to disk, in the format of a 65536 entry float[] array
|
|
/// </summary>
|
|
/// <param name="filename">The desired output filename</param>
|
|
public void WriteToFileF32(string filename)
|
|
{
|
|
FileInfo file = new FileInfo(filename);
|
|
FileStream s = file.Open(FileMode.CreateNew, FileAccess.Write);
|
|
BinaryWriter bs = new BinaryWriter(s);
|
|
|
|
int x, y;
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
for (y = 0; y < h; y++)
|
|
{
|
|
bs.Write((float)heightmap.get(x, y));
|
|
}
|
|
}
|
|
|
|
bs.Close();
|
|
s.Close();
|
|
}
|
|
|
|
/// <summary>
|
|
/// A very fast LL-RAW file output mechanism - lower precision mechanism but wont take 5 minutes to run either.
|
|
/// (is also editable in an image application)
|
|
/// </summary>
|
|
/// <param name="filename">Filename to write to</param>
|
|
public void WriteToFileRAW(string filename)
|
|
{
|
|
FileInfo file = new FileInfo(filename);
|
|
FileStream s = file.Open(FileMode.CreateNew, FileAccess.Write);
|
|
BinaryWriter binStream = new BinaryWriter(s);
|
|
|
|
int x, y;
|
|
|
|
// Used for the 'green' channel.
|
|
byte avgMultiplier = (byte)heightmap.avg();
|
|
byte backupMultiplier = (byte)revertmap.avg();
|
|
|
|
// Limit the multiplier so it can represent points >64m.
|
|
if (avgMultiplier > 196)
|
|
avgMultiplier = 196;
|
|
if(backupMultiplier > 196)
|
|
backupMultiplier = 196;
|
|
// Make sure it's at least one to prevent a div by zero
|
|
if (avgMultiplier < 1)
|
|
avgMultiplier = 1;
|
|
if(backupMultiplier < 1)
|
|
backupMultiplier = 1;
|
|
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
for (y = 0; y < h; y++)
|
|
{
|
|
byte red = (byte)(heightmap.get(x, y) / ((double)avgMultiplier / 128.0));
|
|
byte green = avgMultiplier;
|
|
byte blue = (byte)watermap.get(x, y);
|
|
byte alpha1 = 0; // Land Parcels
|
|
byte alpha2 = 0; // For Sale Land
|
|
byte alpha3 = 0; // Public Edit Object
|
|
byte alpha4 = 0; // Public Edit Land
|
|
byte alpha5 = 255; // Safe Land
|
|
byte alpha6 = 255; // Flying Allowed
|
|
byte alpha7 = 255; // Create Landmark
|
|
byte alpha8 = 255; // Outside Scripts
|
|
byte alpha9 = (byte)(revertmap.get(x, y) / ((double)backupMultiplier / 128.0));
|
|
byte alpha10 = backupMultiplier;
|
|
|
|
binStream.Write(red);
|
|
binStream.Write(green);
|
|
binStream.Write(blue);
|
|
binStream.Write(alpha1);
|
|
binStream.Write(alpha2);
|
|
binStream.Write(alpha3);
|
|
binStream.Write(alpha4);
|
|
binStream.Write(alpha5);
|
|
binStream.Write(alpha6);
|
|
binStream.Write(alpha7);
|
|
binStream.Write(alpha8);
|
|
binStream.Write(alpha9);
|
|
binStream.Write(alpha10);
|
|
}
|
|
}
|
|
binStream.Close();
|
|
s.Close();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Outputs to a LL compatible RAW in the most efficient manner possible
|
|
/// </summary>
|
|
/// <remarks>Does not calculate the revert map</remarks>
|
|
/// <param name="filename">The filename to output to</param>
|
|
public void WriteToFileHiRAW(string filename)
|
|
{
|
|
FileInfo file = new FileInfo(filename);
|
|
FileStream s = file.Open(FileMode.CreateNew, FileAccess.Write);
|
|
BinaryWriter binStream = new BinaryWriter(s);
|
|
|
|
// Generate a smegging big lookup table to speed the operation up (it needs it)
|
|
double[] lookupHeightTable = new double[65536];
|
|
int i, j, x, y;
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
for (j = 0; j < 256; j++)
|
|
{
|
|
lookupHeightTable[i + (j * 256)] = ((double)i * ((double)j / 127.0));
|
|
}
|
|
}
|
|
|
|
// Output the calculated raw
|
|
for (x = 0; x < w; x++)
|
|
{
|
|
for (y = 0; y < h; y++)
|
|
{
|
|
double t = heightmap.get(x, y);
|
|
double min = double.MaxValue;
|
|
int index = 0;
|
|
|
|
for (i = 0; i < 65536; i++)
|
|
{
|
|
if (Math.Abs(t - lookupHeightTable[i]) < min)
|
|
{
|
|
min = Math.Abs(t - lookupHeightTable[i]);
|
|
index = i;
|
|
}
|
|
}
|
|
|
|
byte red = (byte)(index & 0xFF);
|
|
byte green = (byte)((index >> 8) & 0xFF);
|
|
byte blue = (byte)watermap.get(x, y);
|
|
byte alpha1 = 0; // Land Parcels
|
|
byte alpha2 = 0; // For Sale Land
|
|
byte alpha3 = 0; // Public Edit Object
|
|
byte alpha4 = 0; // Public Edit Land
|
|
byte alpha5 = 255; // Safe Land
|
|
byte alpha6 = 255; // Flying Allowed
|
|
byte alpha7 = 255; // Create Landmark
|
|
byte alpha8 = 255; // Outside Scripts
|
|
byte alpha9 = red;
|
|
byte alpha10 = green;
|
|
|
|
binStream.Write(red);
|
|
binStream.Write(green);
|
|
binStream.Write(blue);
|
|
binStream.Write(alpha1);
|
|
binStream.Write(alpha2);
|
|
binStream.Write(alpha3);
|
|
binStream.Write(alpha4);
|
|
binStream.Write(alpha5);
|
|
binStream.Write(alpha6);
|
|
binStream.Write(alpha7);
|
|
binStream.Write(alpha8);
|
|
binStream.Write(alpha9);
|
|
binStream.Write(alpha10);
|
|
}
|
|
}
|
|
|
|
binStream.Close();
|
|
s.Close();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the random seed to be used by procedural functions which involve random numbers.
|
|
/// </summary>
|
|
/// <param name="val">The desired seed</param>
|
|
public void SetSeed(int val)
|
|
{
|
|
heightmap.seed = val;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raises land in a sphere around the specified coordinates
|
|
/// </summary>
|
|
/// <param name="rx">Center of the sphere on the X axis</param>
|
|
/// <param name="ry">Center of the sphere on the Y axis</param>
|
|
/// <param name="size">The radius of the sphere</param>
|
|
/// <param name="amount">Scale the height of the sphere by this amount (recommended 0..2)</param>
|
|
public void RaiseTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
heightmap.raise(rx, ry, size, amount);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Lowers the land in a sphere around the specified coordinates
|
|
/// </summary>
|
|
/// <param name="rx">The center of the sphere at the X axis</param>
|
|
/// <param name="ry">The center of the sphere at the Y axis</param>
|
|
/// <param name="size">The radius of the sphere in meters</param>
|
|
/// <param name="amount">Scale the height of the sphere by this amount (recommended 0..2)</param>
|
|
public void LowerTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
heightmap.lower(rx, ry, size, amount);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Flattens the land under the brush of specified coordinates (spherical mask)
|
|
/// </summary>
|
|
/// <param name="rx">Center of sphere</param>
|
|
/// <param name="ry">Center of sphere</param>
|
|
/// <param name="size">Radius of the sphere</param>
|
|
/// <param name="amount">Thickness of the mask (0..2 recommended)</param>
|
|
public void FlattenTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
heightmap.flatten(rx, ry, size, amount);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates noise within the specified bounds
|
|
/// </summary>
|
|
/// <param name="rx">Center of the bounding sphere</param>
|
|
/// <param name="ry">Center of the bounding sphere</param>
|
|
/// <param name="size">The radius of the sphere</param>
|
|
/// <param name="amount">Strength of the mask (0..2) recommended</param>
|
|
public void NoiseTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
Channel smoothed = new Channel();
|
|
smoothed.noise();
|
|
|
|
Channel mask = new Channel();
|
|
mask.raise(rx, ry, size, amount);
|
|
|
|
heightmap.blend(smoothed, mask);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reverts land within the specified bounds
|
|
/// </summary>
|
|
/// <param name="rx">Center of the bounding sphere</param>
|
|
/// <param name="ry">Center of the bounding sphere</param>
|
|
/// <param name="size">The radius of the sphere</param>
|
|
/// <param name="amount">Strength of the mask (0..2) recommended</param>
|
|
public void RevertTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
Channel mask = new Channel();
|
|
mask.raise(rx, ry, size, amount);
|
|
|
|
heightmap.blend(revertmap, mask);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Smooths land under the brush of specified coordinates (spherical mask)
|
|
/// </summary>
|
|
/// <param name="rx">Center of the sphere</param>
|
|
/// <param name="ry">Center of the sphere</param>
|
|
/// <param name="size">Radius of the sphere</param>
|
|
/// <param name="amount">Thickness of the mask (0..2 recommended)</param>
|
|
public void SmoothTerrain(double rx, double ry, double size, double amount)
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
Channel smoothed = heightmap.copy();
|
|
smoothed.smooth(amount);
|
|
|
|
Channel mask = new Channel();
|
|
mask.raise(rx,ry,size,amount);
|
|
|
|
heightmap.blend(smoothed, mask);
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates a simple set of hills in the shape of an island
|
|
/// </summary>
|
|
public void HillsGenerator()
|
|
{
|
|
lock (heightmap)
|
|
{
|
|
heightmap.hillsSpheres(200, 20, 40, true, true, false);
|
|
heightmap.normalise();
|
|
heightmap *= 60.0; // Raise to 60m
|
|
}
|
|
|
|
tainted++;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Wrapper to heightmap.get()
|
|
/// </summary>
|
|
/// <param name="x">X coord</param>
|
|
/// <param name="y">Y coord</param>
|
|
/// <returns>Height at specified coordinates</returns>
|
|
public double GetHeight(int x, int y)
|
|
{
|
|
return heightmap.get(x, y);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Multiplies the heightfield by val
|
|
/// </summary>
|
|
/// <param name="meep">The heightfield</param>
|
|
/// <param name="val">The multiplier</param>
|
|
/// <returns></returns>
|
|
public static TerrainEngine operator *(TerrainEngine terrain, Double val)
|
|
{
|
|
terrain.heightmap *= val;
|
|
terrain.tainted++;
|
|
return terrain;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Exports the current heightmap to a PNG file
|
|
/// </summary>
|
|
/// <param name="filename">The destination filename for the image</param>
|
|
/// <param name="gradientmap">A 1x*height* image which contains the colour gradient to export with. Must be at least 1x2 pixels, 1x256 or more is ideal.</param>
|
|
public void ExportImage(string filename, string gradientmap)
|
|
{
|
|
try
|
|
{
|
|
Bitmap gradientmapLd = new Bitmap(gradientmap);
|
|
|
|
int pallete = gradientmapLd.Height;
|
|
|
|
Bitmap bmp = new Bitmap(heightmap.w, heightmap.h);
|
|
Color[] colours = new Color[pallete];
|
|
|
|
for (int i = 0; i < pallete; i++)
|
|
{
|
|
colours[i] = gradientmapLd.GetPixel(0, i);
|
|
}
|
|
|
|
Channel copy = heightmap.copy();
|
|
for (int x = 0; x < copy.w; x++)
|
|
{
|
|
for (int y = 0; y < copy.h; y++)
|
|
{
|
|
// 512 is the largest possible height before colours clamp
|
|
int colorindex = (int)(Math.Max(Math.Min(1.0, copy.get(x, y) / 512.0), 0.0) * (pallete - 1));
|
|
bmp.SetPixel(x, y, colours[colorindex]);
|
|
}
|
|
}
|
|
|
|
bmp.Save(filename, ImageFormat.Png);
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
Console.WriteLine("Failed generating terrain map: " + e.ToString());
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Exports the current heightmap in Jpeg2000 format to a byte[]
|
|
/// </summary>
|
|
/// <param name="gradientmap">A 1x*height* image which contains the colour gradient to export with. Must be at least 1x2 pixels, 1x256 or more is ideal.</param>
|
|
public byte[] ExportJpegImage(string gradientmap)
|
|
{
|
|
byte[] imageData = null;
|
|
try
|
|
{
|
|
Bitmap gradientmapLd = new Bitmap(gradientmap);
|
|
|
|
int pallete = gradientmapLd.Height;
|
|
|
|
Bitmap bmp = new Bitmap(heightmap.w, heightmap.h);
|
|
Color[] colours = new Color[pallete];
|
|
|
|
for (int i = 0; i < pallete; i++)
|
|
{
|
|
colours[i] = gradientmapLd.GetPixel(0, i);
|
|
}
|
|
|
|
Channel copy = heightmap.copy();
|
|
for (int x = 0; x < copy.w; x++)
|
|
{
|
|
for (int y = 0; y < copy.h; y++)
|
|
{
|
|
// 512 is the largest possible height before colours clamp
|
|
int colorindex = (int)(Math.Max(Math.Min(1.0, copy.get(copy.h - y, x) / 512.0), 0.0) * pallete);
|
|
bmp.SetPixel(x, y, colours[colorindex]);
|
|
}
|
|
}
|
|
|
|
//bmp.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
|
|
imageData = OpenJPEG.EncodeFromImage(bmp, true );
|
|
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
Console.WriteLine("Failed generating terrain map: " + e.ToString());
|
|
}
|
|
|
|
return imageData;
|
|
}
|
|
}
|
|
}
|