3 files changed, 20 insertions, 6 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
index 77ea3ed..f5b84d4 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
@@ -259,12 +259,12 @@ public override BulletShape CreateHullShape(BulletWorld world, int hullCount, fl
                     BSPhysicsShapeType.SHAPE_HULL);
 }
 
-public override BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape)
+public override BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape, HACDParams parms)
 {
     BulletWorldUnman worldu = world as BulletWorldUnman;
     BulletShapeUnman shapeu = meshShape as BulletShapeUnman;
     return new BulletShapeUnman(
-                    BSAPICPP.BuildHullShapeFromMesh2(worldu.ptr, shapeu.ptr),
+                    BSAPICPP.BuildHullShapeFromMesh2(worldu.ptr, shapeu.ptr, parms),
                     BSPhysicsShapeType.SHAPE_HULL);
 }
 
@@ -1411,7 +1411,7 @@ public static extern IntPtr CreateHullShape2(IntPtr world,
                 int hullCount, [MarshalAs(UnmanagedType.LPArray)] float[] hulls);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
-public static extern IntPtr BuildHullShapeFromMesh2(IntPtr world, IntPtr meshShape);
+public static extern IntPtr BuildHullShapeFromMesh2(IntPtr world, IntPtr meshShape, HACDParams parms);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern IntPtr BuildNativeShape2(IntPtr world, ShapeData shapeData);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
index 6fc10e9..f6b4359 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
@@ -1773,10 +1773,9 @@ private sealed class BulletConstraintXNA : BulletConstraint
         return new BulletShapeXNA(compoundshape, BSPhysicsShapeType.SHAPE_HULL);
     }
 
-    public override BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape)
+    public override BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape, HACDParams parms)
     {
         /* TODO */ return null;
-
     }
 
     public override BulletShape CreateMeshShape(BulletWorld pWorld, int pIndicesCount, int[] indices, int pVerticesCount, float[] verticesAsFloats)
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs b/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
index 5765b0d..d0d9f34 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
@@ -191,6 +191,21 @@ public struct ConfigurationParameters
     public const float numericFalse = 0f;
 }
 
+// Parameters passed for the conversion of a mesh to a hull using Bullet's HACD library.
+[StructLayout(LayoutKind.Sequential)]
+public struct HACDParams
+{
+                                            // usual default values
+        public float maxVerticesPerHull;                // 100
+        public float minClusters;                               // 2
+        public float compacityWeight;                   // 0.1
+        public float volumeWeight;                              // 0.0
+        public float concavity;                             // 100
+        public float addExtraDistPoints;                // false
+        public float addNeighboursDistPoints;   // false
+        public float addFacesPoints;                    // false
+        public float shouldAdjustCollisionMargin;       // false
+}
 
 // The states a bullet collision object can have
 public enum ActivationState : uint
@@ -308,7 +323,7 @@ public abstract BulletShape CreateMeshShape(BulletWorld world,
 public abstract BulletShape CreateHullShape(BulletWorld world,
                 int hullCount, float[] hulls);
 
-public abstract BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape);
+public abstract BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape, HACDParams parms);
 
 public abstract BulletShape BuildNativeShape(BulletWorld world, ShapeData shapeData);