Mantis#1207. Thank you, TGlion for a patch that addresses:

Implementation of llModifyLand() and There is a bug on 
permission-check of land-terraforming: x an y-coordinates 
are interchanged on function-call ExternalChecksCanTerraformLand.
Correct: x is west, and y is north. 2) Missing check of 
"Other allow to terraform-flag" (Parcel.ParcelFlags.AllowTerraform)

1 files changed, 4 insertions, 1 deletions

diff --git a/OpenSim/Region/Environment/Modules/World/Terrain/PaintBrushes/SmoothSphere.cs b/OpenSim/Region/Environment/Modules/World/Terrain/PaintBrushes/SmoothSphere.cs
index 89d9063..c63cb90 100644
--- a/OpenSim/Region/Environment/Modules/World/Terrain/PaintBrushes/SmoothSphere.cs
+++ b/OpenSim/Region/Environment/Modules/World/Terrain/PaintBrushes/SmoothSphere.cs
@@ -33,7 +33,7 @@ namespace OpenSim.Region.Environment.Modules.World.Terrain.PaintBrushes
     {
         #region ITerrainPaintableEffect Members
 
-        public void PaintEffect(ITerrainChannel map, double rx, double ry, double strength, double duration)
+        public void PaintEffect(ITerrainChannel map, bool[,] mask, double rx, double ry, double rz, double strength, double duration)
         {
             strength = TerrainUtil.MetersToSphericalStrength(strength);
 
@@ -76,6 +76,9 @@ namespace OpenSim.Region.Environment.Modules.World.Terrain.PaintBrushes
             {
                 for (y = 0; y < map.Height; y++)
                 {
+                    if (!mask[x,y])
+                        continue;
+
                     double z = TerrainUtil.SphericalFactor(x, y, rx, ry, strength);
 
                     if (z > 0) // add in non-zero amount