get pos() {
    const mouseX =
      ((this.mouse[0] - this.verties[0][0]) /
        (this.verties[2][0] - this.verties[0][0])) *
      100;
    const mouseY =
      ((this.mouse[1] - this.verties[0][1]) /
        (this.verties[2][1] - this.verties[0][1])) *
      100;

    return [mouseX, mouseY, 0];
  }
center position in viewport as world

@returns {vec3}