export default { methods: { onTouchStart (event) { this.direction = '' this.deltaX = 0 this.deltaY = 0 this.offsetX = 0 this.offsetY = 0 this.startX = event.touches[0].clientX this.startY = event.touches[0].clientY }, onTouchMove (event) { const touch = event.touches[0] this.deltaX = touch.clientX - this.startX this.deltaY = touch.clientY - this.startY this.offsetX = Math.abs(this.deltaX) this.offsetY = Math.abs(this.deltaY) this.direction = this.offsetX > this.offsetY ? 'horizontal' : this.offsetX < this.offsetY ? 'vertical' : '' }, }, }