public SpObject(SpObject copy)
: this(copy != null ? copy.M : default(Double),
copy != null ? copy.P : default(SpVector),
copy != null ? copy.S : default(SpVector),
copy != null ? copy.A : default(SpVector),
copy != null ? from f in copy.Forces select new SpVector(f) : null)
{
}
private SpObject CreateInstance()
{
SpObject obj = new SpObject();
return obj;
}
private void AddRespectiveGravitationalForces(SpObject o1, SpObject o2)
{
SpVector fo1o2 = (o2.P - o1.P).Normalize() * SpConst.G * o1.M * o2.M / (o2.P - o1.P).Length2;
SpVector fo2o1 = -fo1o2;
o1.Forces.Add(fo1o2);
o2.Forces.Add(fo2o1);
}
public SpItem(String name = default(String), SpObject coord = default(SpObject))
: base(coord ?? new SpObject())
{
Name = name ?? String.Empty;
}
public void AddItem(SpObject obj)
{
if (m_Items.Contains(obj) == false)
{
this.S += obj.S * (this.M != 0.0 ? obj.M / this.M : 1.0);
this.P += obj.P * (this.M != 0.0 ? obj.M / this.M : 1.0);
this.M += obj.M;
m_Items.Add(obj);
}
}
protected bool Equals(SpObject obj)
{
if (obj == null)
return false;
else
return this.M.Equals(obj.M)
&& this.P.Equals(obj.P)
&& this.S.Equals(obj.S)
&& this.A.Equals(obj.A)
&& this.Forces.SequenceEqual(obj.Forces);
}
