Frequency Analyzer: There is a white vertical line moving from left to right. It leaves behind a colorful trace. The colors correspond to the intensities of various components of the sound. For instance, if you whistle into the microphone a pure sine

访问摄像头数据，在获取的视频图像中画一条线，比较基础的视频处理代码，需要的朋友可以下载哦-Access to the camera data, in obtaining the video images to draw a line, compared handling code based on the video, you need friends you can download

Draw Straight Line any degr-Draw Straight Line any degree