Bug in Generic 6DOF joint fixed

Debug visualization of joint constraints was added

src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h

@@ -56,6 +56,8 @@ public:
 	btScalar	m_swingCorrection;
 	btScalar	m_twistCorrection;
 
+	btScalar	m_twistAngle;
+
 	btScalar	m_accSwingLimitImpulse;
 	btScalar	m_accTwistLimitImpulse;
 
@@ -129,6 +131,23 @@ public:
 
 	void calcAngleInfo();
 
+	inline btScalar getSwingSpan1()
+	{
+		return m_swingSpan1;
+	}
+	inline btScalar getSwingSpan2()
+	{
+		return m_swingSpan2;
+	}
+	inline btScalar getTwistSpan()
+	{
+		return m_twistSpan;
+	}
+	inline btScalar getTwistAngle()
+	{
+		return m_twistAngle;
+	}
+
 
 };