three.js orthographic camera object picking - three.js

Question

i am trying to pick objects in a scene where i use an orthographic camera.
my code fragment already works, but it is not precise.
i already found some answers on stackoverflow, but those are deprecated or won't work anymore at all.
here is my code onMouseDown
function onDocumentMouseUp( event ) {
event.preventDefault();
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
var vector = new THREE.Vector3(mouse.x, mouse.y, 0.5);
var pos = camera.position;
var ray = new THREE.Raycaster(pos, vector.unproject(camera).sub(camera.position).normalize());
var intersects = ray.intersectObjects(objects);
if (intersects.length > 0) {
console.log("touched:" + intersects[0]);
}
else {
console.log("not touched");
}
}
please see http://jsfiddle.net/ujzpe07t/1/
if you click some pixels away left/right/above/below the cube, it still tells me that the object was touched.
i am using three.js r69.
any hints would be very much appreciated.
thanks, cheers!

Answer 1

Here is the pattern to use when raycasting (picking) with either an orthographic camera or a perspective camera:
var raycaster = new THREE.Raycaster(); // create once
var mouse = new THREE.Vector2(); // create once
...
mouse.x = ( event.clientX / renderer.domElement.clientWidth ) * 2 - 1;
mouse.y = - ( event.clientY / renderer.domElement.clientHeight ) * 2 + 1;
raycaster.setFromCamera( mouse, camera );
var intersects = raycaster.intersectObjects( objects, recursiveFlag );
three.js r.84