public void Particle_InfiniteMass()
{
Particle part = new Particle(Vector3.Zero);
part.InverseMass = 0f; //infinite mass
Vector3 force = Vector3.Up;
part.addForce(force);
part.integrate(1); // first one only applies last frame's accumulators
part.integrate(1);
Assert.AreEqual(Vector3.Zero, part.Position);
}
public void Particle_Ideal_Nudge()
{
Particle part = new Particle(Vector3.Zero);
part.Mass = 1f;
Vector3 force = Vector3.Up;
part.addForce(force);
part.integrate(1); // first one only applies last frame's accumulators
part.integrate(1);
Assert.AreEqual(Vector3.Up, part.Position, "Position");
Assert.AreEqual(Vector3.Up, part.Velocity, "Velocity");
// This maybe be bug....
Assert.AreEqual(Vector3.Zero, part.Acceleration, "Acceleration");
}