92 lines
3.6 KiB
C#
92 lines
3.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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namespace OpenSim.Terrain.BasicTerrain
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{
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static class RaiseLower
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{
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/// <summary>
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/// Raises land around the selection
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/// </summary>
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/// <param name="rx">The center the X coordinate of where you wish to raise the land</param>
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/// <param name="ry">The center the Y coordinate of where you wish to raise the land</param>
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/// <param name="size">The radius of the dimple</param>
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/// <param name="amount">How much impact to add to the terrain (0..2 usually)</param>
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public static void raise(float[,] map, double rx, double ry, double size, double amount)
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{
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raiseSphere(map, rx, ry, size, amount);
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}
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/// <summary>
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/// Raises land in a sphere around the selection
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/// </summary>
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/// <param name="rx">The center the X coordinate of where you wish to raise the land</param>
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/// <param name="ry">The center the Y coordinate of where you wish to raise the land</param>
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/// <param name="size">The radius of the sphere dimple</param>
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/// <param name="amount">How much impact to add to the terrain (0..2 usually)</param>
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public static void raiseSphere(float[,] map, double rx, double ry, double size, double amount)
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{
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int x, y;
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int w = map.GetLength(0);
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int h = map.GetLength(1);
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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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double z = size;
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z *= z;
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z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));
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if (z < 0)
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z = 0;
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map[x, y] += (float)(z * amount);
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}
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}
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}
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/// <summary>
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/// Lowers land in a sphere around the selection
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/// </summary>
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/// <param name="rx">The center the X coordinate of where you wish to lower the land</param>
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/// <param name="ry">The center the Y coordinate of where you wish to lower the land</param>
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/// <param name="size">The radius of the sphere dimple</param>
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/// <param name="amount">How much impact to remove from the terrain (0..2 usually)</param>
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public static void lower(float[,] map, double rx, double ry, double size, double amount)
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{
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lowerSphere(map, rx, ry, size, amount);
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}
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/// <summary>
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/// Lowers land in a sphere around the selection
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/// </summary>
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/// <param name="rx">The center the X coordinate of where you wish to lower the land</param>
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/// <param name="ry">The center the Y coordinate of where you wish to lower the land</param>
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/// <param name="size">The radius of the sphere dimple</param>
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/// <param name="amount">How much impact to remove from the terrain (0..2 usually)</param>
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public static void lowerSphere(float[,] map, double rx, double ry, double size, double amount)
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{
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int x, y;
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int w = map.GetLength(0);
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int h = map.GetLength(1);
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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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double z = size;
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z *= z;
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z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));
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if (z < 0)
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z = 0;
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map[x, y] -= (float)(z * amount);
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}
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}
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}
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}
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}
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