Class DispatchBox

src/main/java/fieldbox/boxes/plugins/DispatchBox.java:28–298

A Box with a custom drawer for holding onto and drawning a connection between two other boxes. Automatically deletes itself should either of its two ends disappears. head() is the parent of tail() is the dispatch graph

 * head() is the parent of tail() is the dispatch graph
 */
public class DispatchBox extends Box implements IO.Loaded // the drawer is initialized after all the properties are loaded
{

	static public final Dict.Prop<BoxRef> head = new Dict.Prop<>("head").type()
		.toCanon()
		.doc("the head of this topology arrow box");
	static public final Dict.Prop<BoxRef> tail = new Dict.Prop<>("tail").type()
		.toCanon()
		.doc("the tail of this topology arrow box");


	static public final Dict.Prop<FunctionOfBoxValued<Collection<Missing.Log>>> logThrough = new Dict.Prop<>("logThrough").type()
		.toCanon()
		.doc("property transcript filtered to include only property access that's _through_ this connection");

	static {
		// these properties need to be saved in our document
		IO.persist(head);
		IO.persist(tail);
	}

	static private final boolean notForInsert = true; // tell FileBrowser not to bother offering us for insertion
	Rect cache_h = null;
	Rect cache_t = null;

	public DispatchBox(Box head, Box tail) {
		this.properties.put(DispatchBox.head, new BoxRef(head));
		this.properties.put(DispatchBox.tail, new BoxRef(tail));
		this.properties.put(Chorder.nox, true);

		loaded();
		this.properties.put(Boxes.dontSave, true);
	}


	/**
	 * custom constructor, call init after you are done
	 */
	protected DispatchBox() {
		this.properties.put(Boxes.dontSave, true);
	}

	static public Pair<FLine, Vec3> arc(Rect from, Rect to, float d1, float d2, boolean selected) {

		return Dispatch.arc(from, to, d1, d2, selected);

		/*FLine f = new FLine();

		Vec2 a = new Vec2(from.x + from.w / 2, from.y + from.h / 2);
		Vec2 b = new Vec2(to.x + to.w / 2, to.y + to.h / 2);

		float d = (float) b.distance(a);

		Vec2 normal = Vec2.sub(b, a, new Vec2());

		Vec2 tan = new Vec2(-normal.y, normal.x).normalize().mul(d * 0.15f);
		if (normal.x > 0) tan.mul(-1);