rt-sim-training-client/src/utils/index.js

/**
 * Created by jiachenpan on 16/11/18.
 */
import md5 from 'js-md5';

// 时间转换格式
export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
        return null;
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
    let date;
    if (typeof time === 'object') {
        date = time;
    } else {
        if (('' + time).length === 10) time = parseInt(time) * 1000;
        date = new Date(time);
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay()
    };
    const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key];
        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
        if (result.length > 0 && value < 10) {
            value = '0' + value;
        }
        return value || 0;
    });
    return time_str;
}
// 判断多久之前
export function formatTime(time, option) {
    time = +time * 1000;
    const d = new Date(time);
    const now = Date.now();

    const diff = (now - d) / 1000;

    if (diff < 30) {
        return '刚刚';
    } else if (diff < 3600) { // less 1 hour
        return Math.ceil(diff / 60) + '分钟前';
    } else if (diff < 3600 * 24) {
        return Math.ceil(diff / 3600) + '小时前';
    } else if (diff < 3600 * 24 * 2) {
        return '1天前';
    }
    if (option) {
        return parseTime(time, option);
    } else {
        return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分';
    }
}

/**
 * 获取dom对象偏移位置 设置初始位置
 * @param {*} dom - 需要获取的dom
 * @param {*} isFixed - 父级是否position: fixed
 */
export function getDomOffset(dom) {
    let pol = 0;
    let pot = 0;
    let offsetLeft = 0;
    let offsetTop = 0;
    while (dom) {
        if (pol != dom.offsetLeft) {
            offsetLeft += dom.offsetLeft;
            pol = dom.offsetLeft;
        }
        if (pot != dom.offsetTop) {
            offsetTop += dom.offsetTop;
            pot = dom.offsetTop;
        }
        dom = dom.offsetParent;
    }
    const offset = {
        x: offsetLeft,
        y: offsetTop
    };
    return offset;
}

/**
 * 矩形碰撞检测
 */
export function checkRectCollision(rect1, rect2) {
    const center1 = { x: rect1.point.x + rect1.width / 2, y: rect1.point.y + rect1.height / 2 };
    const center2 = { x: rect2.point.x + rect2.width / 2, y: rect2.point.y + rect2.height / 2 };
    if (
    // 横向判断 和 纵向判断
        Math.abs(center1.x - center2.x) < rect1.width / 2 + rect2.width / 2 &&
		Math.abs(center1.y - center2.y) < rect1.height / 2 + rect2.height / 2
    ) {
        return true;
    }
    return false;
}

export function getSessionId() {
    return md5([Math.random().toFixed(5), +new Date()].join('_'));
}

/*
*  获取倒计时
*  data 目标时间
*/
export function getCountTime(data) {
    const stationDate = parseInt(data);
    const date = Date.parse(new Date()) / 1000;
    const time = stationDate - date;
    if (time > 0) {
        let h = Math.floor(time / (60 * 60));
        let m = Math.floor(time / 60) - (h * 60);
        let s = Math.floor(time) - (h * 60 * 60) - (m * 60);
        if (h <= 9) h = '0' + h;
        if (m <= 9) m = '0' + m;
        if (s <= 9) s = '0' + s;
        return `${h}:${m}:${s}`;
    } else {
        return -1;
    }
}

// 对象 深拷贝
export function deepClone(item) {
    const target = item.constructor === Array ? [] : {}; // 判断复制的目标是数组还是对象
    for (const keys in item) {
        if (item.hasOwnProperty(keys) && keys != 'instance') { // instance 对面不拷贝
            if (item[keys] && typeof item[keys] === 'object') { // 如果值是对象，就递归一下
                target[keys] = item[keys].constructor === Array ? [] : {};
                target[keys] = deepClone(item[keys]);
            } else {
                target[keys] = item[keys];
            }
        }
    }
    return target;
}

export function deepAssign(obj, item) {
    const target = item.constructor === Array ? [] : {}; // 判断复制的目标是数组还是对象
    for (const keys in item) {
        if (item.hasOwnProperty(keys) && keys != 'instance') { // instance 对面不拷贝
            if (item[keys] && typeof item[keys] === 'object') { // 如果值是对象，就递归一下
                target[keys] = item[keys].constructor === Array ? [] : {};
                target[keys] = deepClone(item[keys]);
            } else {
                target[keys] = item[keys];
            }
        }
    }
    return Object.assign(obj, target);
}