expose basic parameters in SimpleOpenGL3App, test with accumulated hinge angle, GUI is still preliminary

Demos/ConstraintDemo/ConstraintPhysicsSetup.h

@@ -0,0 +1,16 @@
+#ifndef CONSTAINT_PHYSICS_SETUP_H
+#define CONSTAINT_PHYSICS_SETUP_H
+
+#include "../CommonRigidBodySetup.h"
+
+struct ConstraintPhysicsSetup : public CommonRigidBodySetup
+{
+	ConstraintPhysicsSetup();
+	virtual ~ConstraintPhysicsSetup();
+	virtual void initPhysics(GraphicsPhysicsBridge& gfxBridge);
+
+	virtual void stepSimulation(float deltaTime);
+
+};
+
+#endif //CONSTAINT_PHYSICS_SETUP_H