From 787636b97ac242c3a903664a2fe1f26ea8c0130a Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Mon, 3 Dec 2012 16:25:51 -0800
Subject: BulletSim: Reduce idle region physics overhead where there are MANY  
   static objects by more restrictive selection of objects that collide    
 with static objects. Rename collision mask fuctions from 'filter' to 'group'
 so it is clear     what is being set. Rename
 BulletSimAPI.SetCollisionFilterMask() to SetCollisionGroupMask to match
 above. Restore passing of time step to linear and angular motion component
 routines. Use buffering vehicle physical parameter get/set routines
 consistantly. Make range enforcement clearer by using ClampInRange() function
 for parameter setting. Remove commented out experimental vehicle
 calculations.

---
 .../Region/Physics/BulletSPlugin/BulletSimAPI.cs   | 64 +++++++++++-----------
 1 file changed, 32 insertions(+), 32 deletions(-)

(limited to 'OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs')

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
index 21bc6a3..a5acfd1 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
@@ -57,12 +57,12 @@ public struct BulletBody
     {
         ID = id;
         ptr = xx;
-        collisionFilter = 0;
+        collisionGroup = 0;
         collisionMask = 0;
     }
     public IntPtr ptr;
     public uint ID;
-    public CollisionFilterGroups collisionFilter;
+    public CollisionFilterGroups collisionGroup;
     public CollisionFilterGroups collisionMask;
     public override string ToString()
     {
@@ -71,10 +71,10 @@ public struct BulletBody
         buff.Append(ID.ToString());
         buff.Append(",p=");
         buff.Append(ptr.ToString("X"));
-        if (collisionFilter != 0 || collisionMask != 0)
+        if (collisionGroup != 0 || collisionMask != 0)
         {
-            buff.Append(",f=");
-            buff.Append(collisionFilter.ToString("X"));
+            buff.Append(",g=");
+            buff.Append(collisionGroup.ToString("X"));
             buff.Append(",m=");
             buff.Append(collisionMask.ToString("X"));
         }
@@ -376,36 +376,36 @@ public enum CollisionFilterGroups : uint
     // Don't use the bit definitions!!  Define the use in a
     //   filter/mask definition below. This way collision interactions
     //   are more easily debugged.
-    BNoneFilter              = 0,
-    BDefaultFilter           = 1 << 0,
-    BStaticFilter            = 1 << 1,
-    BKinematicFilter         = 1 << 2,
-    BDebrisFilter            = 1 << 3,
-    BSensorTrigger           = 1 << 4,
-    BCharacterFilter         = 1 << 5,
-    BAllFilter               = 0xFFFFFFFF,
+    BNoneGroup              = 0,
+    BDefaultGroup           = 1 << 0,
+    BStaticGroup            = 1 << 1,
+    BKinematicGroup         = 1 << 2,
+    BDebrisGroup            = 1 << 3,
+    BSensorTrigger          = 1 << 4,
+    BCharacterGroup         = 1 << 5,
+    BAllGroup               = 0xFFFFFFFF,
     // Filter groups defined by BulletSim
-    BGroundPlaneFilter       = 1 << 10,
-    BTerrainFilter           = 1 << 11,
-    BRaycastFilter           = 1 << 12,
-    BSolidFilter             = 1 << 13,
-    BLinksetFilter           = 1 << 14,
+    BGroundPlaneGroup       = 1 << 10,
+    BTerrainGroup           = 1 << 11,
+    BRaycastGroup           = 1 << 12,
+    BSolidGroup             = 1 << 13,
+    BLinksetGroup           = 1 << 14,
 
     // The collsion filters and masked are defined in one place -- don't want them scattered
-    AvatarFilter            = BCharacterFilter,
-    AvatarMask              = BAllFilter,
-    ObjectFilter            = BSolidFilter,
-    ObjectMask              = BAllFilter,
-    StaticObjectFilter      = BStaticFilter,
-    StaticObjectMask        = BAllFilter & ~BStaticFilter,   // static objects don't collide with each other
-    LinksetFilter           = BLinksetFilter,
-    LinksetMask             = BAllFilter & ~BLinksetFilter, // linkset objects don't collide with each other
-    VolumeDetectFilter      = BSensorTrigger,
+    AvatarGroup             = BCharacterGroup,
+    AvatarMask              = BAllGroup,
+    ObjectGroup             = BSolidGroup,
+    ObjectMask              = BAllGroup,
+    StaticObjectGroup       = BStaticGroup,
+    StaticObjectMask        = AvatarGroup | ObjectGroup,    // static things don't interact with much
+    LinksetGroup            = BLinksetGroup,
+    LinksetMask             = BAllGroup & ~BLinksetGroup, // linkset objects don't collide with each other
+    VolumeDetectGroup       = BSensorTrigger,
     VolumeDetectMask        = ~BSensorTrigger,
-    TerrainFilter           = BTerrainFilter,
-    TerrainMask             = BAllFilter & ~BStaticFilter,  // static objects on the ground don't collide
-    GroundPlaneFilter       = BGroundPlaneFilter,
-    GroundPlaneMask         = BAllFilter
+    TerrainGroup            = BTerrainGroup,
+    TerrainMask             = BAllGroup & ~BStaticGroup,  // static objects on the ground don't collide
+    GroundPlaneGroup        = BGroundPlaneGroup,
+    GroundPlaneMask         = BAllGroup
 
 };
 
@@ -945,7 +945,7 @@ public static extern IntPtr GetConstraintRef2(IntPtr obj, int index);
 public static extern int GetNumConstraintRefs2(IntPtr obj);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
-public static extern void SetCollisionFilterMask2(IntPtr body, uint filter, uint mask);
+public static extern bool SetCollisionGroupMask2(IntPtr body, uint filter, uint mask);
 
 // =====================================================================================
 // btCollisionShape entries
-- 
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