public void GetContactNormal(int index, ref System.Numerics.Vector2 normal)
{
normal.Set(this.contacts[index].normal.X, this.contacts[index].normal.Y);
}
public void GetContactPoint(int index, ref System.Numerics.Vector2 point)
{
point.Set(this.contacts[index].point.X, this.contacts[index].point.Y);
}
public void GetRelativeVelocity(ref System.Numerics.Vector2 velc)
{
velc.Set(this.relativeVelocity.X, this.relativeVelocity.Y);
}