**BREAKING CHANGE** Changing the way terrain is stored and used internally.

1 files changed, 91 insertions, 0 deletions

diff --git a/OpenSim.Terrain.BasicTerrain/RaiseLower.cs b/OpenSim.Terrain.BasicTerrain/RaiseLower.cs
new file mode 100644
index 0000000..384bcc0
--- /dev/null
+++ b/OpenSim.Terrain.BasicTerrain/RaiseLower.cs
@@ -0,0 +1,91 @@
+using System;

+using System.Collections.Generic;

+using System.Text;

+

+namespace OpenSim.Terrain.BasicTerrain

+{

+    static class RaiseLower

+    {

+        /// <summary>

+        /// Raises land around the selection

+        /// </summary>

+        /// <param name="rx">The center the X coordinate of where you wish to raise the land</param>

+        /// <param name="ry">The center the Y coordinate of where you wish to raise the land</param>

+        /// <param name="size">The radius of the dimple</param>

+        /// <param name="amount">How much impact to add to the terrain (0..2 usually)</param>

+        public static void raise(float[,] map, double rx, double ry, double size, double amount)

+        {

+            raiseSphere(map, rx, ry, size, amount);

+        }

+

+        /// <summary>

+        /// Raises land in a sphere around the selection

+        /// </summary>

+        /// <param name="rx">The center the X coordinate of where you wish to raise the land</param>

+        /// <param name="ry">The center the Y coordinate of where you wish to raise the land</param>

+        /// <param name="size">The radius of the sphere dimple</param>

+        /// <param name="amount">How much impact to add to the terrain (0..2 usually)</param>

+        public static void raiseSphere(float[,] map, double rx, double ry, double size, double amount)

+        {

+            int x, y;

+            int w = map.GetLength(0);

+            int h = map.GetLength(1);

+

+            for (x = 0; x < w; x++)

+            {

+                for (y = 0; y < h; y++)

+                {

+                    double z = size;

+                    z *= z;

+                    z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));

+

+                    if (z < 0)

+                        z = 0;

+

+                    map[x, y] += (float)(z * amount);

+                }

+            }

+        }

+

+        /// <summary>

+        /// Lowers land in a sphere around the selection

+        /// </summary>

+        /// <param name="rx">The center the X coordinate of where you wish to lower the land</param>

+        /// <param name="ry">The center the Y coordinate of where you wish to lower the land</param>

+        /// <param name="size">The radius of the sphere dimple</param>

+        /// <param name="amount">How much impact to remove from the terrain (0..2 usually)</param>

+        public static void lower(float[,] map, double rx, double ry, double size, double amount)

+        {

+            lowerSphere(map, rx, ry, size, amount);

+        }

+

+        /// <summary>

+        /// Lowers land in a sphere around the selection

+        /// </summary>

+        /// <param name="rx">The center the X coordinate of where you wish to lower the land</param>

+        /// <param name="ry">The center the Y coordinate of where you wish to lower the land</param>

+        /// <param name="size">The radius of the sphere dimple</param>

+        /// <param name="amount">How much impact to remove from the terrain (0..2 usually)</param>

+        public static void lowerSphere(float[,] map, double rx, double ry, double size, double amount)

+        {

+            int x, y;

+            int w = map.GetLength(0);

+            int h = map.GetLength(1);

+

+            for (x = 0; x < w; x++)

+            {

+                for (y = 0; y < h; y++)

+                {

+                    double z = size;

+                    z *= z;

+                    z -= ((x - rx) * (x - rx)) + ((y - ry) * (y - ry));

+

+                    if (z < 0)

+                        z = 0;

+

+                    map[x, y] -= (float)(z * amount);

+                }

+            }

+        }

+    }

+}