python中写shell,亲测可用,转自stackoverflow To run a bash script, copy from stackoverflow def run_script(script, stdin=None): """Returns (stdout, stderr), raises error on non-zero return code""" import subprocess # Note: by using a li
<!DOCTYPE html> <html> <head> <title>HTML5 Canvas Demo of clock</title> <script> function time(){ var mycanvas=document.getElementById("myCanvasTag"); var mycontext=mycanvas.getContext('2d'); //清空画布, mycontext
#include <iostream> #include <opencv2/opencv.hpp> using namespace std; using namespace cv; int main() { Mat img = imread("e.bmp"); imshow("原图", img); ]; sprintf(tem, "%s","Where are you?"); //img原图像,tem输
小程序中经常会遇到要生成图片的需求,图片一般会加上用户的头像和昵称之类的,头像只需要把腾讯域名添加到request和download列表中,使用wx.getImageInfo()就可以缓存到本地,成功的回调再添加进canvas中生成图片. 如果要文字在某个位置居中,canvas中文字怎么根据文字长短不一实现锚点在文字中心位置呢? var txtWidth=canvas.measureText(this.nickName).width能获取到在canvas中文字的宽度,找到文字的居中x位置减去tx
