anchor.diff:        let Bdir = "cruz"; //Hacia dentro de la pantalla. "punto", hacia fuera de la pantalla.
         let Fm = [0, 0]; //Fuerza magnetica
   
  +
         let label = new Konva.Label({
  -          x: 180,
  -          y: 150,
  +          x: 380,
  +          y: 200,
             opacity: 0.75,
             draggable: true,
         });
  
positive.code:           constructor() {
                this.particle = new Konva.Circle({
                    x: 150,
                    y: 350,
                    radius: 12,
                    fill: 'red',
                    draggable: true
  
negative.code:           window.alert()
        }
        function startAnim() {
            line.points([part.getPart().x(), part.getPart().y()]);
            layer.add(line);
            anim.start();
        }
        function drawCampo(direccion) {
  