From 0acde92af969b3251aec95e4ea08d618da39d184 Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Wed, 7 Aug 2013 07:54:47 -0700
Subject: BulletSim: add API and calls for spring constraint parameters.

---
 OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs | 38 ++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

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

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
index 2a820be..9ad12a9 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
@@ -752,6 +752,44 @@ private sealed class BulletConstraintXNA : BulletConstraint
         constraint.SetBreakingImpulseThreshold(threshold);
         return true;
     }
+    public override bool SpringEnable(BulletConstraint pConstraint, int index, float numericTrueFalse)
+    {
+        Generic6DofSpringConstraint constraint = (pConstraint as BulletConstraintXNA).constrain as Generic6DofSpringConstraint;
+        constraint.EnableSpring(index, (numericTrueFalse == 0f ? false : true));
+        return true;
+    }
+
+    public override bool SpringSetEquilibriumPoint(BulletConstraint pConstraint, int index, float equilibriumPoint)
+    {
+        Generic6DofSpringConstraint constraint = (pConstraint as BulletConstraintXNA).constrain as Generic6DofSpringConstraint;
+        if (index == -1)
+        {
+            constraint.SetEquilibriumPoint();
+        }
+        else
+        {
+            if (equilibriumPoint == -1)
+                constraint.SetEquilibriumPoint(index);
+            else
+                constraint.SetEquilibriumPoint(index, equilibriumPoint);
+        }
+        return true;
+    }
+
+    public override bool SpringSetStiffness(BulletConstraint pConstraint, int index, float stiffness)
+    {
+        Generic6DofSpringConstraint constraint = (pConstraint as BulletConstraintXNA).constrain as Generic6DofSpringConstraint;
+        constraint.SetStiffness(index, stiffness);
+        return true;
+    }
+
+    public override bool SpringSetDamping(BulletConstraint pConstraint, int index, float damping)
+    {
+        Generic6DofSpringConstraint constraint = (pConstraint as BulletConstraintXNA).constrain as Generic6DofSpringConstraint;
+        constraint.SetDamping(index, damping);
+        return true;
+    }
+
     //BulletSimAPI.SetAngularDamping(Prim.PhysBody.ptr, angularDamping);
     public override void SetAngularDamping(BulletBody pBody, float angularDamping)
     {
-- 
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