public void Clamp()
{
Vector2f v = new Vector2f(0.4f, 1.6f);
v.Clamp(0.5f, 1.5f);
Assert.AreEqual(v, new Vector2f(0.5f, 1.5f));
v = new Vector2f(0.4f, 1.6f);
v.Clamp(new Vector2f(0.5f, 1.5f), new Vector2f(0.5f, 1.5f));
Assert.AreEqual(v, new Vector2f(0.5f, 1.5f));
}
public void CalculateLine(IEnumerable <GravityObject> objects)
{
//just going to use 1 second as the time.
var totalForce = new Vector2f();
foreach (var go in objects)
{
var distSquared = this._startPos.DistanceSquared(go.GlobalCenterOfMass);
distSquared /= 10;
var offsetVec = go.GlobalCenterOfMass - this._startPos;
var force = GravityObject.GravitationalConstant * (this._mass * go.Mass) * offsetVec /
(float)Math.Sqrt(Math.Pow((distSquared + GravityObject.Epsilon * GravityObject.Epsilon), 3));
totalForce += force;
}
totalForce = totalForce.Clamp(this._maxLength);
var endPoint = this._startPos + totalForce;
this.Line = new[] { new Vertex(this._startPos, Color.White), new Vertex(endPoint, Color.Red) };
}
/// <summary>Get the nearest point between this <see cref="Box2f"/> and a <see cref="Vector2f"/>. If the <see cref="Vector2f"/> is inside this <see cref="Box2f"/>, it is returned untouched.</summary>
public void NearestPointTo( ref Vector2f point , out Vector2f result)
{
Containment containment = Intersect(ref point);
if(containment != Containment.Disjoint)
result = point;
else
point.Clamp(ref Min, ref Max, out result);
return;
}
/// <summary>Get the nearest point between this <see cref="Box2f"/> and a <see cref="Vector2f"/>. If the <see cref="Vector2f"/> is inside this <see cref="Box2f"/>, it is returned untouched.</summary>
public Vector2f NearestPointTo( Vector2f point )
{
Vector2f result;
Containment containment = Intersect(ref point);
if(containment != Containment.Disjoint)
result = point;
else
point.Clamp(ref Min, ref Max, out result);
return result;
}
