whole_func_string: function animate() {
      controls.update();
      renderer.render(scene, camera);
  
      controls1.update();
      renderer1.render(scene1, camera1);
  
      // request new frame
      requestAnimationFrame(function() {
          animate();
      });
  }
func_code_string: function animate() {
      controls.update();
      renderer.render(scene, camera);
  
      controls1.update();
      renderer1.render(scene1, camera1);
  
      // request new frame
      requestAnimationFrame(function() {
          animate();
      });
  }
func_documentation_string: Start animation loop