private void calcPrimitives(Camera camera) {
        for (MassAttractObject3D obj : world.getSystem()) {
            primitives.get(getNameTypeObj(obj.getName())).calcCoordinates(this, camera, obj);
            if(obj.equals(world.getSelectObject()))
                primitives.get("Select").calcCoordinates(this, camera, obj);
        }

    }