From f172730a38ed63a7308486e8cf5f777064d3e4ab Mon Sep 17 00:00:00 2001
From: Seth Alves <seth.alves@gmail.com>
Date: Sat, 22 Apr 2017 20:09:14 -0700
Subject: [PATCH] try to allow axisInA to be adjusted on the fly

---
 libraries/physics/src/ObjectConstraintHinge.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libraries/physics/src/ObjectConstraintHinge.cpp b/libraries/physics/src/ObjectConstraintHinge.cpp
index e14c467228..55d9181059 100644
--- a/libraries/physics/src/ObjectConstraintHinge.cpp
+++ b/libraries/physics/src/ObjectConstraintHinge.cpp
@@ -102,6 +102,7 @@ void ObjectConstraintHinge::prepareForPhysicsSimulation() {
 
 void ObjectConstraintHinge::updateHinge() {
     btHingeConstraint* constraint { nullptr };
+    glm::vec3 axisInA;
     float low;
     float high;
     float softness;
@@ -113,6 +114,7 @@ void ObjectConstraintHinge::updateHinge() {
     float maxImpulse;
 
     withReadLock([&]{
+        axisInA = _axisInA;
         constraint = static_cast<btHingeConstraint*>(_constraint);
         low = _low;
         high = _high;
@@ -132,6 +134,9 @@ void ObjectConstraintHinge::updateHinge() {
     if (!constraint) {
         return;
     }
+
+    auto bulletAxisInA = glmToBullet(axisInA);
+    constraint->setAxis(bulletAxisInA);
 }