private static double TorqueCallback(DampedRotarySpring spring, double force)
{
var sb = (StringBuilder)spring.Data;
sb.Append("TorqueCallback");
return(force);
}
public void DampedRotarySpringProperties()
{
double restAngle = 1.2222;
double stiffness = 0.888;
double damping = 0.9090;
space.Gravity = new Vect(0, -10);
var spring = new DampedRotarySpring(bodyA,
bodyB,
restAngle, stiffness, damping);
var sb = new StringBuilder();
spring.Data = sb;
spring.TorqueFunction = TorqueCallback;
space.AddConstraint(spring);
space.Step(1.0);
Assert.AreEqual("TorqueCallback", sb.ToString(), "#0");
spring.TorqueFunction = null;
space.Step(1.0);
Assert.AreEqual("TorqueCallback", sb.ToString(), "#0.1");
spring.TorqueFunction = TorqueCallback;
space.Step(1.0);
Assert.AreEqual("TorqueCallbackTorqueCallback", sb.ToString(), "#0.2");
Assert.AreEqual(restAngle, spring.RestAngle, "#1");
Assert.AreEqual(stiffness, spring.Stiffness, "#2");
Assert.AreEqual(damping, spring.Damping, "#3");
spring.RestAngle = 2.0;
spring.Stiffness = 1.0;
spring.Damping = 1.1;
Assert.AreEqual(2.0, spring.RestAngle, "#4");
Assert.AreEqual(1.0, spring.Stiffness, "#5");
Assert.AreEqual(1.1, spring.Damping, "#6");
Assert.IsTrue(DampedRotarySpring.IsDampedRotarySpring(spring), "#7");
}
