public void TestUpdate()
{
var forceRegistry = new ForceRegistry();
var force = new ParticleConstantForce(new Vector2D(5, 0));
var p = new Particle {
Mass = 1
};
force.Add(p);
this.TestAddForceGenerator(forceRegistry, force);
forceRegistry.Update(1 / 60.0);
p.Update(1 / 60.0);
Assert.AreEqual(new Vector2D(5, 0), p.Acceleration, "物体被赋予正确的加速度");
p.Acceleration = Vector2D.Zero;
this.TestRemoveForceGenerator(forceRegistry, force);
forceRegistry.Update(1 / 60.0);
p.Update(1 / 60.0);
Assert.AreEqual(new Vector2D(0, 0), p.Acceleration, "删去作用力发生器，物体不再受该作用力发生器所产生的力");
force.Add(p);
this.TestAddForceGenerator(forceRegistry, force);
this.TestRemoveParticle(forceRegistry, p);
forceRegistry.Update(1 / 60.0);
p.Update(1 / 60.0);
Assert.AreEqual(new Vector2D(0, 0), p.Acceleration, "删去物体，物体不再受该作用力发生器所产生的力");
}
public void TestApplyTo()
{
var force = new ParticleConstantForce(new Vector2D(5, 0));
var particle = new Particle
{
Mass = 1
};
force.Add(particle);
force.Apply(1);
particle.Update(1);
Assert.AreEqual(new Vector2D(5, 0), particle.Acceleration);
}
public void TestUpdate()
{
var world = new World();
// 两种物体
var objA = new CombinedParticle(
new List <Vector2D> {
new Vector2D(0, 0),
new Vector2D(5, 0),
new Vector2D(0, 5)
});
var objB = new Particle {
Mass = 1, Position = Vector2D.Zero
};
// 一个全局作用力
var zone = new GlobalZone();
zone.Add(new ParticleGravity(new Vector2D(0, 9.8)));
world.Zones.Add(zone);
TestAddCustomObject(world, objA);
var handle = TestPin(world, objA);
TestUnPin(world, objA, handle);
TestRemoveCustomObject(world, objA);
// 一个作用力
var force = new ParticleConstantForce(new Vector2D(5, 0));
force.Add(objB);
world.ForceGenerators.Add(force);
TestAddObject(world, objB);
TestRemoveObject(world, objB);
}