Interface.js

"use strict";

var ControlPointTool = BasicTool.extend(function() {

    this.typename = "ControlPointTool"; // intended for debugging

    this.create_controlpoint = function(socket, pos) {
	if (this.gizmos[socket] || this.ties[socket]) {
	    console.error("Attempt to add a controlpoint at a used socket"); return;
	}
	this.create_output(socket);
	this.gizmos[socket].pos = [Cplx.create(pos[0],0),Cplx.create(pos[1],0)];
    }

    this.recalculate = function() { }

    this.create_output_gizmo = function(socket) { return ControlPoint.create(); }

    this.find_closest = function(pos) {
	var i_best=-1, d_best = Infinity;
	for (var i=0; i<this.gizmos.length; i++) {
	    var d = this.gizmos[i].distance_to_c(pos);
	    if (d < d_best) { d_best = d; i_best = i; }
	}
	return [i_best, d_best];
    }

    this.get_state = function() {
	var state = [];
	for (var i=0; i<this.gizmos.length; i++) {
	    var gizmo = this.gizmos[i];
	    if (gizmo) state[i] = gizmo.dup();
	}
	return state;
    }

    this.restore_state = function(state) {
	for (var i=0; i<state.length; i++) {
	    var pos = state[i];
	    if (pos) this.gizmos[i].pos = pos;
	}
    }

    this.randomize = function() {
	for (var i=0; i<this.gizmos.length; i++) {
	    var gizmo = this.gizmos[i];
	    if (gizmo) gizmo.pos = [Cplx.random(), Cplx.random()];
	}
    }

});


//TODO bug: get_gizmo reports connected gizmos, while its contract is to return only gizmos owned
//by this tool. This leads to problems in Tool.remove_output.
//Perhaps solution is to override get_output rather than get_gizmo?

var InterfaceTool = BasicTool.extend(function() {

    this.typename = "InterfaceTool"; // intended for debugging

    this.create_output = function() {} // we never own any gizmos
    this.max_output_socket = function() { return this.max_input_socket(); }

    this.get_output = function(socket) { 
	var tie = this.get_tie(socket);
	return tie ? tie[0].get_output(tie[1]) : this.listen(socket);
    }

    this.recalculate = function() {}

});