From 9afe2b018fbe444c0500695dbce37bdce126feee Mon Sep 17 00:00:00 2001
From: Melanie Thielker
Date: Thu, 26 Nov 2015 17:29:50 +0100
Subject: Mantis #7765: Add new ClampNegativeZ option. Defaults to false to
 restore prior functionality. Avination code wasn't designed for deep
 building.

---
 OpenSim/Region/Framework/Scenes/Scene.cs      | 9 +++++++++
 OpenSim/Region/Framework/Scenes/SceneGraph.cs | 6 ++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

(limited to 'OpenSim/Region/Framework')

diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 55c4fda..2296981 100755
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -174,6 +174,13 @@ namespace OpenSim.Region.Framework.Scenes
 
         public SynchronizeSceneHandler SynchronizeScene;
 
+        public bool ClampNegativeZ
+        {
+            get { return m_clampNegativeZ; }
+        }
+
+        private bool m_clampNegativeZ = false;
+
         /// <summary>
         /// Used to prevent simultaneous calls to code that adds and removes agents.
         /// </summary>
@@ -1029,6 +1036,8 @@ namespace OpenSim.Region.Framework.Scenes
                     m_clampPrimSize = true;
                 }
 
+                m_clampNegativeZ = startupConfig.GetBoolean("ClampNegativeZ", m_clampNegativeZ);
+
                 m_useTrashOnDelete = startupConfig.GetBoolean("UseTrashOnDelete",m_useTrashOnDelete);
                 m_trustBinaries = startupConfig.GetBoolean("TrustBinaries", m_trustBinaries);
                 m_allowScriptCrossings = startupConfig.GetBoolean("AllowScriptCrossing", m_allowScriptCrossings);
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index 9308500..2ecb55b 100755
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -296,13 +296,15 @@ namespace OpenSim.Region.Framework.Scenes
                 Vector3 npos = new Vector3(sceneObject.RootPart.GroupPosition.X,
                                            sceneObject.RootPart.GroupPosition.Y,
                                            sceneObject.RootPart.GroupPosition.Z);
-                if (!(((sceneObject.RootPart.Shape.PCode == (byte)PCode.Prim) && (sceneObject.RootPart.Shape.State != 0))) && (npos.X < 0.0 || npos.Y < 0.0 || npos.Z < 0.0 ||
+                bool clampZ = m_parentScene.ClampNegativeZ;
+
+                if (!(((sceneObject.RootPart.Shape.PCode == (byte)PCode.Prim) && (sceneObject.RootPart.Shape.State != 0))) && (npos.X < 0.0 || npos.Y < 0.0 || (npos.Z < 0.0 && clampZ) ||
                     npos.X > regionSizeX ||
                     npos.Y > regionSizeY))
                 {
                     if (npos.X < 0.0) npos.X = 1.0f;
                     if (npos.Y < 0.0) npos.Y = 1.0f;
-                    if (npos.Z < 0.0) npos.Z = 0.0f;
+                    if (npos.Z < 0.0 && clampZ) npos.Z = 0.0f;
                     if (npos.X > regionSizeX) npos.X = regionSizeX - 1.0f;
                     if (npos.Y > regionSizeY) npos.Y = regionSizeY - 1.0f;
 
-- 
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