three js Get position in space of 2 objects

I have two squares in space which are something like front and back wall of cube

one vith vertices

x=-2, y=-1138, z=-2

x=-2, y=-1134, z=-2

x=2, y=-1138, z=-2

x=2, y=-1134, z=-2

second

x=-2, y=1134, z=2

x=-2, y=1138, z=2

x=2, y=1134, z=2

x=2, y=1138, z=2

when I calculate distanceTo from camera like this

var point1 = this.camera.matrixWorld.getPosition().clone();

var point2 = this.mesh.cubePlane3.children[0].matrixWorld.getPosition().clone();

var distance = point1.distanceTo( point2 );

I have always the same distance for both 20,09. These squres are rotated in space, so only rotation is changed and I would need somehow find out which wall is closer to camera to be able to do something that in cube 3 walls closer to camera are not displayed and next 3 walls are displayed.

And obviously I do not understand math behind this, for example why walls which are next to each other one have positive coordinates for y and next negative + why distance is the same value, when one is closer on z axis than second. Can you pls someone help me how I can get closer walls? Thank you

I think you're on the wrong forum. This forum is not for general purpose javascript, but for construct 2, which does not have three.js integrated.

you better ask question in stack overflow