@mirari/mp-common
Version:
小程序公共库
38 lines (34 loc) • 960 B
JavaScript
/**
* 获取触摸点位置信息
*/
export const getTouchPoints = (e, index = 0) => {
const { pageX: x, pageY: y } = e.touches[index] || e.changedTouches[index]
return {
x,
y,
}
}
/**
* 获取触摸点个数
*/
export const getPointsNumber = (e) => e.touches && e.touches.length || e.changedTouches && e.changedTouches.length
/**
* 判断是否为同一点
*/
export const isEqualPoints = (p1, p2) => p1.x === p2.x && p1.y === p2.y
/**
* 判断是否为相近的两点
*/
export const isNearbyPoints = (p1, p2, DOUBLE_TAP_RADIUS = 25) => {
const xMove = Math.abs(p1.x - p2.x)
const yMove = Math.abs(p1.y - p2.y)
return xMove < DOUBLE_TAP_RADIUS & yMove < DOUBLE_TAP_RADIUS
}
/**
* 获取两点之间的距离
*/
export const getPointsDistance = (p1, p2) => {
const xMove = Math.abs(p1.x - p2.x)
const yMove = Math.abs(p1.y - p2.y)
return Math.sqrt(xMove * xMove + yMove * yMove)
}