201     _.each(actors, function(a) {  argument
202       var bb = this.textBBox(a.name, font);
203       a.textBB = bb;
205       a.x = 0; a.y = 0;
206       a.width  = bb.width  + (ACTOR_PADDING + ACTOR_MARGIN) * 2;
207       a.height = bb.height + (ACTOR_PADDING + ACTOR_MARGIN) * 2;
209       a.distances = [];
210       a.paddingRight = 0;
211       this.actorsHeight_ = Math.max(a.height, this.actorsHeight_);
214     function actorEnsureDistance(a, b, d) {  argument
215       assert(a < b, 'a must be less than or equal to b');
217       if (a < 0) {
223         a = actors[a];
224         a.paddingRight = Math.max(d, a.paddingRight);
226         a = actors[a];
227         a.distances[b] = Math.max(d, a.distances[b] ? a.distances[b] : 0);
233       var a;
252           a = s.actorA.index;
253           b = a + 1;
256           a = Math.min(s.actorA.index, s.actorB.index);
269           a = b - 1;
271           a = s.actor.index;
272           b = a + 1;
275           a = Math.min(s.actor[0].index, s.actor[1].index);
283           a = s.actor.index;
284           actorEnsureDistance(a - 1, a, s.width / 2);
285           actorEnsureDistance(a, a + 1, s.width / 2);
294       actorEnsureDistance(a, b, s.width + extraWidth);
300     _.each(actors, function(a) {  argument
301       a.x = Math.max(actorsX, a.x);
304       _.each(a.distances, function(distance, b) {
312         distance = Math.max(distance, a.width / 2, b.width / 2);
313         b.x = Math.max(b.x, a.x + a.width / 2 + distance - b.width / 2);
316       actorsX = a.x + a.width + a.paddingRight;
341     _.each(this.diagram.actors, function(a) {  argument
343       this.drawActor(a, y, this.actorsHeight_);
346       this.drawActor(a, y + this.actorsHeight_ + this.signalsHeight_, this.actorsHeight_);
349       var aX = getCenterX(a);