1 files changed, 36 insertions, 0 deletions

diff --git a/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs
index 33f0337..ad9b28f 100644
--- a/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs
@@ -55,6 +55,28 @@ namespace OpenSim.Region.PhysicsModules.SharedBase
         Absolute
     }
 
+    public class PhysicsInertiaData
+    {
+        public float TotalMass; // the total mass of a linkset
+        public Vector3 CenterOfMass;  // the center of mass position relative to root part position
+        public Vector3 Inertia; //  (Ixx, Iyy, Izz) moment of inertia relative to center of mass and principal axis in local coords
+        public Vector4 InertiaRotation; // if principal axis don't match local axis, the principal axis rotation
+                                        // or the upper triangle of the inertia tensor 
+                                        // Ixy (= Iyx), Ixz (= Izx), Iyz (= Izy))
+
+        public PhysicsInertiaData()
+        {
+        }
+
+        public PhysicsInertiaData(PhysicsInertiaData source)
+        {
+           TotalMass = source.TotalMass;
+           CenterOfMass = source.CenterOfMass;
+           Inertia = source.Inertia;
+           InertiaRotation = source.InertiaRotation;
+        }
+    }
+
     public struct CameraData
     {
         public Quaternion CameraRotation;
@@ -463,6 +485,20 @@ namespace OpenSim.Region.PhysicsModules.SharedBase
 
         public virtual void AddCollisionEvent(uint CollidedWith, ContactPoint contact) { }
 
+        public virtual PhysicsInertiaData GetInertiaData()
+        {
+            PhysicsInertiaData data = new PhysicsInertiaData();
+            data.TotalMass = this.Mass;
+            data.CenterOfMass = CenterOfMass - Position;
+            data.Inertia = Vector3.Zero;
+            data.InertiaRotation = Vector4.Zero;
+            return data;
+        }
+
+        public virtual void SetInertiaData(PhysicsInertiaData inertia)
+        {
+        }
+
         // Warning in a parent part it returns itself, not null
         public virtual PhysicsActor ParentActor { get { return this; } }