public void TestIPinWithNotCloseObject()
{
CombinedParticle obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1),
new Vector2D(1, 0)
}, isClose: false);
World world = new World();
// Pin
var handle = world.Pin(obj, Vector2D.UnitX);
Assert.AreEqual(Vector2D.UnitX, handle.Position);
// 移动handle
handle.Position = Vector2D.Zero;
Assert.AreEqual(new Vector2D(-1, 0), obj.Position);
Assert.IsTrue(obj.PinRods.Count == 4);
// UnPin
world.UnPin(obj);
Assert.IsTrue(obj.PinRods.Count == 0);
}
public void TestConstructorForCloseObjectFail()
{
// 无法形成封闭形状物体
CombinedParticle objB = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1)
});
}
public void TestConstructorByOnePointFail()
{
CombinedParticle obj = null;
// 无法构成组合物体
obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0)
}, isClose: false);
}
private void TestAddCustomObject(World world, CombinedParticle obj)
{
world.AddObject(obj);
world.Update(1);
var vertexs = obj.Vertexs;
for (var i = 0; i < vertexs.Count; i++)
{
Assert.AreEqual(new Vector2D(0, 9.8), vertexs[i].Acceleration, $"作用力应被正确地施加到了物体{i}上");
}
}
public void TestConstructorByTwoPointFail()
{
CombinedParticle obj = null;
// 无法构成封闭的组合物体
obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1)
});
}
public void TestGetRods()
{
CombinedParticle obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1)
});
Assert.IsNotNull(obj.Rods);
Assert.IsTrue(obj.Rods.Count == 3);
}
public void TestConstructorForNotCloseObject()
{
// 不封闭物体
CombinedParticle obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1),
new Vector2D(1, 0),
}, isClose: false);
Assert.IsTrue(obj.Vertexs.Count == 4);
}
public void TestConstructorForCloseObject()
{
// 封闭形状
CombinedParticle obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1)
});
Assert.IsNotNull(obj);
Assert.IsTrue(obj.Vertexs.Count == 4);
}
private void TestUnPin(World world, CombinedParticle obj, Handle handle)
{
obj.Position = Vector2D.Zero;
world.UnPin(obj);
handle.Position = new Vector2D(100, 100);
Assert.AreEqual(new Vector2D(0, 0), obj.Position, "Handle不能对其生效");
try
{
world.UnPin(obj);
}
catch (Exception e)
{
Assert.IsInstanceOfType(e, typeof(InvalidOperationException), "不允许对未Pin的物体执行UnPin");
}
}
private void TestRemoveCustomObject(World world, CombinedParticle obj)
{
var vertexs = obj.Vertexs;
foreach (var vertex in vertexs)
{
vertex.Acceleration = Vector2D.Zero;
}
world.RemoveObject(obj);
world.Update(1);
for (var i = 0; i < vertexs.Count; i++)
{
Assert.AreEqual(new Vector2D(0, 0), vertexs[i].Acceleration, $"物体{i}上");
}
}
public void TestUpdateWithNotCloseObject()
{
// 封闭物体
CombinedParticle obj = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1)
}, isClose: false);
obj.Position = new Vector2D(1, 0);
obj.Update(1 / 60.0);
Assert.AreEqual(new Vector2D(1, 0), obj.Vertexs[0].Position);
Assert.AreEqual(new Vector2D(2, 1), obj.Vertexs[2].Position);
Assert.AreEqual(new Vector2D(0, 0), obj.Position);
}
private Handle TestPin(World world, CombinedParticle obj)
{
obj.Position = Vector2D.Zero;
var handle = world.Pin(obj, Vector2D.Zero);
try
{
world.Pin(obj, Vector2D.UnitX);
}
catch (Exception e)
{
Assert.IsInstanceOfType(e, typeof(InvalidOperationException), "不允许对同一物体Pin多次");
}
handle.Position = new Vector2D(100, 100);
Assert.AreEqual(new Vector2D(100, 100), obj.Position, "Handle能对其生效");
return(handle);
}
public void TestIsClose()
{
CombinedParticle objA = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1)
});
Assert.IsTrue(objA.IsClose);
CombinedParticle objB = new CombinedParticle(
new List <Vector2D>
{
new Vector2D(0, 0),
new Vector2D(0, 1),
new Vector2D(1, 1),
new Vector2D(1, 0),
}, isClose: false);
Assert.IsFalse(objB.IsClose);
}
public RobDemo(Image image)
: base(image)
{
Settings.ContactIteration = 20;
this.combinedParticle = new CombinedParticle(this.vertexs, 3, 1, true);
this.PhysicsWorld.AddObject(this.combinedParticle);
// 为顶点绑定形状
foreach (var vertex in this.combinedParticle.Vertexs)
{
vertex.BindShape(new Circle(4.ToSimUnits()));
}
// 增加边缘
this.PhysicsWorld.CreatePolygonEdge(this.edgePoints.ToArray());
// 增加重力
this.PhysicsWorld.CreateGravity(9.8);
this.DrawQueue.Add(this);
this.Start = true;
}
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);
}
