据说,作为一只敬业的小白程序猿,加班加狠的时候,一旦放松下来,会时不时的产生错觉:
比如,对面同事养的仓鼠都会跳海草舞了
(海草海草海草)
又比如发现桌面上的脑婆在对你撒娇
(今天请早点回家哦)
又比如·····我擦,看个抖音,代码都会跳舞了?
(视频来源于抖音ID:编程老师)
年级轻轻的眼睛就要不行了吗?我头发都还没秃完呢!
赶紧滚去请教前辈,代码会跳舞是怎么实现的?我绝不相信代码有生命,这样Bug不就成为不断再生的大boss了嘛!
前辈却说,so easy,你想让代码跳什么舞啊?
我说······海草舞可以嘛?要跳的比对面同事养的仓鼠好!
(一秒变萌)
前辈:······小意思,等着
前辈:好了,成了
我:额,没看懂QAQ
前辈:······算了,给你代码你自己拿去抄着玩吧
于是小白程序猿愉快的get到了完整的代码,撒丫子来跟大家分享啦~
```python
import sysimport osimport timeimport threadingimport termiosimport ttyimport cv2import pyprindclass CharFrame: ascii_char = "$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. " # 像素映射到字符 def pixelToChar(self, luminance): return self.ascii_char[int(luminance/256*len(self.ascii_char))] # 将普通帧转为 ASCII 字符帧 def convert(self, img, limitSize=-1, fill=False, wrap=False): if limitSize != -1 and (img.shape[0] > limitSize[1] or img.shape[1] > limitSize[0]): img = cv2.resize(img, limitSize, interpolation=cv2.INTER_AREA) ascii_frame = '' blank = '' if fill: blank += ' '*(limitSize[0]-img.shape[1]) if wrap: blank += '\n' for i in range(img.shape[0]): for j in range(img.shape[1]): ascii_frame += self.pixelToChar(img[i,j]) ascii_frame += blank return ascii_frameclass I2Char(CharFrame): result = None def __init__(self, path, limitSize=-1, fill=False, wrap=False): self.genCharImage(path, limitSize, fill, wrap) def genCharImage(self, path, limitSize=-1, fill=False, wrap=False): img = cv2.imread(path, cv2.IMREAD_GRAYSCALE) if img is None: return self.result = self.convert(img, limitSize, fill, wrap) def show(self, stream = 2): if self.result is None: return if stream == 1 and os.isatty(sys.stdout.fileno()): self.streamOut = sys.stdout.write self.streamFlush = sys.stdout.flush elif stream == 2 and os.isatty(sys.stderr.fileno()): self.streamOut = sys.stderr.write self.streamFlush = sys.stderr.flush elif hasattr(stream, 'write'): self.streamOut = stream.write self.streamFlush = stream.flush self.streamOut(self.result) self.streamFlush() self.streamOut('\n')class V2Char(CharFrame): charVideo = [] timeInterval = 0.033 def __init__(self, path): if path.endswith('txt'): self.load(path) else: self.genCharVideo(path) def genCharVideo(self, filepath): self.charVideo = [] cap = cv2.VideoCapture(filepath) self.timeInterval = round(1/cap.get(5), 3) nf = int(cap.get(7)) print('Generate char video, please wait...') for i in pyprind.prog_bar(range(nf)): rawFrame = cv2.cvtColor(cap.read()[1], cv2.COLOR_BGR2GRAY) frame = self.convert(rawFrame, os.get_terminal_size(), fill=True) self.charVideo.append(frame) cap.release() def export(self, filepath): if not self.charVideo: return with open(filepath,'w') as f: for frame in self.charVideo: # 加一个换行符用以分隔每一帧 f.write(frame + '\n') def load(self, filepath): self.charVideo = [] # 一行即为一帧 for i in open(filepath): self.charVideo.append(i[:-1]) def play(self, stream = 1): # Bug: # 光标定位转义编码不兼容 Windows if not self.charVideo: return if stream == 1 and os.isatty(sys.stdout.fileno()): self.streamOut = sys.stdout.write self.streamFlush = sys.stdout.flush elif stream == 2 and os.isatty(sys.stderr.fileno()): self.streamOut = sys.stderr.write self.streamFlush = sys.stderr.flush elif hasattr(stream, 'write'): self.streamOut = stream.write self.streamFlush = stream.flush old_settings = None breakflag = None # 获得标准输入的文件描述符 fd = sys.stdin.fileno() def getChar(): nonlocal breakflag nonlocal old_settings # 保存标准输入的属性 old_settings = termios.tcgetattr(fd) # 设置标准输入为原始模式 tty.setraw(sys.stdin.fileno()) # 读取一个字符 ch = sys.stdin.read(1) breakflag = True if ch else False # 创建线程 getchar = threading.Thread(target=getChar) # 设置为守护线程 getchar.daemon = True # 启动守护线程 getchar.start() # 输出的字符画行数 rows = len(self.charVideo[0])//os.get_terminal_size()[0] for frame in self.charVideo: # 接收到输入则退出循环 if breakflag is True: break self.streamOut(frame) self.streamFlush() time.sleep(self.timeInterval) # 共 rows 行,光标上移 rows-1 行回到开始处 self.streamOut('\033[{}A\r'.format(rows-1)) # 恢复标准输入为原来的属性 termios.tcsetattr(fd, termios.TCSADRAIN, old_settings) # 光标下移 rows-1 行到最后一行,清空最后一行 self.streamOut('\033[{}B\033[K'.format(rows-1)) # 清空最后一帧的所有行(从倒数第二行起) for i in range(rows-1): # 光标上移一行 self.streamOut('\033[1A') # 清空光标所在行 self.streamOut('\r\033[K') info = 'User interrupt!\n' if breakflag else 'Finished!\n' self.streamOut(info)if __name__ == '__main__': import argparse # 设置命令行参数 parser = argparse.ArgumentParser() parser.add_argument('file', help='Video file or charvideo file') parser.add_argument('-e', '--export', nargs = '?', const = 'charvideo.txt', help='Export charvideo file') # 获取参数 args = parser.parse_args() v2char = V2Char(args.file) if args.export: v2char.export(args.export) v2char.play()
```
(看不到右边的请向右滑动屏幕就可以啦)
就酱,小白程序猿和他的前辈完成了某种神秘的py交易。我们也get了新技能,还能什么,快快玩起来吧,学会了,就可以有用属于你的代码小人,享受支配代码的快乐吧~
话外:我今天把字体放大啦!微博那几位嫌字小的小姐姐小哥哥们!今天看的够清楚嘛?!如果看清了,求微信关注来一发啊啊啊啊啊!
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