一段cpu正弦曲线现实code

 

public class T {   
  
  public static void main(String[] args) throws Exception {   
    // 角度的分割   
    final double SPLIT = 0.01;   
    //   
    // 2PI分割的次数，也就是2/0.01个，正好是一周   
    final int COUNT = (int) (2 / SPLIT);   
    final double PI = Math.PI;   
    // 时间间隔   
    final int INTERVAL = 200;   
    long[] busySpan = new long[COUNT];   
    long[] idleSpan = new long[COUNT];   
    int half = INTERVAL / 2;   
    double radian = 0.0;   
    for (int i = 0; i < COUNT; i++) {   
      busySpan[i] = (long) (half + (Math.sin(PI * radian) * half));   
      idleSpan[i] = INTERVAL - busySpan[i];   
      radian += SPLIT;   
    }   
    long startTime = 0;   
    int j = 0;   
    while (true) {   
      j = j % COUNT;   
      startTime = System.currentTimeMillis();   
      while (System.currentTimeMillis() - startTime < busySpan[j])   
        ;   
      Thread.sleep(idleSpan[j]);   
      j++;   
    }   
  }   
}  
/**  
 *   
 * @原author 赵学庆
 *   
 */