dont draw offscreen constraints. Set visible flag on offscreen sprites

src/render/RenderPixi.js

@@ -170,7 +170,8 @@ var RenderPixi = {};
  container = render.container,
  options = render.options,
  bodies = Composite.allBodies(world),
- constraints = Composite.allConstraints(world),
+ allConstraints = Composite.allConstraints(world),
+ constraints = [],
  i;
 
  if (options.wireframes) {
@@ -186,12 +187,35 @@ var RenderPixi = {};
  boundsScaleY = boundsHeight / render.options.height;
 
  if (options.hasBounds) {
- // TODO: filter out bodies that are not in view
- // TODO: filter out constraints that are not in view
+ // Hide bodies that are not in view
+ for (i = 0; i < bodies.length; i++) {
+ var body = bodies[i];
+ body.render.sprite.visible = Bounds.overlaps(body.bounds, render.bounds);
+ }
+
+ // filter out constraints that are not in view
+ for (i = 0; i < allConstraints.length; i++) {
+ var constraint = allConstraints[i],
+ bodyA = constraint.bodyA,
+ bodyB = constraint.bodyB,
+ pointAWorld = constraint.pointA,
+ pointBWorld = constraint.pointB;
+
+ if (bodyA) pointAWorld = Vector.add(bodyA.position, constraint.pointA);
+ if (bodyB) pointBWorld = Vector.add(bodyB.position, constraint.pointB);
+
+ if (!pointAWorld || !pointBWorld)
+ continue;
+
+ if (Bounds.contains(render.bounds, pointAWorld) || Bounds.contains(render.bounds, pointBWorld))
+ constraints.push(constraint);
+ }
 
  // transform the view
  container.scale.set(1 / boundsScaleX, 1 / boundsScaleY);
  container.position.set(-render.bounds.min.x, -render.bounds.min.y);
+ } else {
+ constraints = allConstraints;
  }
 
  for (i = 0; i < bodies.length; i++)