public static void gameStart()
{
Instance.Create(new Background {
Color = Colors.LightGray
});
GlobalEvent.ExitOnEscape = true;
View.Rectangle(-1, 1, 2, -2).Bind();
diagram = Instance <SpacetimeDiagram> .Create();
stringModel = new StringModel(Observer.Default.Origin.ProperOffset(-0.8, 0), 0.631, 0, 0, 0.45);
diagram.Elements.Add(stringModel);
var(l, r) = stringModel.Fragment(0.6, 2.5, 2.5);
diagram.Elements.Add(l);
diagram.Elements.Add(r);
//
//(l, r) = r.Fragment(0.45, 1, 1);
//diagram.Elements.Add(l);
//diagram.Elements.Add(r);
var rnd = new Random();
// for (int i = 0; i < 10; i++)
// diagram.Elements.Add(new SpacetimeEvent(Observer.Default.Point(rnd.NextDouble() - 0.5, rnd.NextDouble() - 0.5)));
GlobalEvent.BeginStep += GlobalEvent_BeginStep;
}
public (StringModel, StringModel) Fragment(double z, double leftLifetime, double rightLifetime)
{
if (z <= 0 || z >= 1)
{
throw new ArgumentOutOfRangeException(nameof(z));
}
var leftOffset = _leftZ(Lifetime);
var rightOffset = _rightZ(Lifetime);
var Et = rightOffset - leftOffset;
var center = (leftOffset + rightOffset) / 2.0;
var q = 2 * z - 1;
var left = new StringModel(Origin.ProperOffset(Lifetime, center + Et / 2 * (q - 1) / 2),
z * Et,
_leftP(Lifetime), 0, leftLifetime);
var right = new StringModel(Origin.ProperOffset(Lifetime, center + Et / 2 * (q + 1) / 2),
(1 - z) * Et,
0, _rightP(Lifetime), rightLifetime);
return(left, right);
}