transform 网上很多都只介绍了还原角度和缩放的参数,但是没有就偏移量的计算,自己还原了一下公式的意义,进行了公式的反推,具体的推到过程就不详叙了,可以参看w3c的矩阵含义. 直接上干货. function getElementCss(e, name) { var st = window.getComputedStyle(e, null); return st.getPropertyValue(name); } function getTransformPara(elem) { // va…
I want to detect where a MouseEvent has occurred, in coordinates relative to the clicked element. Why? Because I want to add an absolutely positioned child element at the clicked location. I know how to detect it when no CSS3 transformations exist (s…
点云数据可以用ASCII码的形式存储在PCD文件中(关于该格式的描述可以参考链接:The PCD (Point Cloud Data) file format).为了生成三维点云数据,在excel中用rand()函数生成200行0-1的小数,ABC三列分别代表空间点的xyz坐标. # .PCD v.7 - Point Cloud Data file format VERSION .7 FIELDS x y z SIZE 4 4 4 TYPE F F F COUNT 1 1 1 WIDTH 200…
//js方法用来获取路径传参上所带的参数 function GetQueryString(param) { var reg = new RegExp("(^|&)" + param + "=([^&]*)(&|$)", "i"); var r = window.location.search.substr(1).match(reg); if (r != null) { return r[2]; } return null;…