Question

目前我的功能是这样的：

#define kKILOMETER                              1000
#define kSeconds_To_Milliseconds    1000
#define kHOUR 60
#define kMINUTE 60
#define kLongDistance_3KM   3

- (long)calculateTimeToMilliSecondsWithDistance:(double)distance andSpeed:(float)theSpeed
{
    // Distance arrive in meters
    double kmDistance = distance/kKILOMETER;

    long time =
    (long)(((kmDistance - kLongDistance_3KM)/[self.ref integerForKey:@"MAX_SPEED"])*kHOUR*kMINUTE*kSeconds_To_Milliseconds);

    NSLog(@"calculateTimeToMilliSeconds -> sleep to (sec): %li, maxSpeed: %li",
          time/1000, (long)[self.ref integerForKey:@"MAX_SPEED"]);

    [self startSendSleepTime:time];
    return time;
}

我的“MAX_SPEED”值是指200 km / h。我得到的是错误的价值。我想用我的距离减去3公里，速度为200公里/小时来计算时间，但不知何故，它会搞得一团糟。在几秒钟内获得它会更好，因为我应该删除kSeconds_To_Milliseconds，对吗？

我不知道为我搞砸了什么。

编辑1：

例如：

2014-03-19 18:12:39.624 Cellular Radar[3338:60b] Distance to car: 4713, Trap Radius: 900
2014-03-19 18:12:39.673 Cellular Radar[3338:60b] calculateTimeToMilliSeconds -> sleep to (sec): 2055, maxSpeed: 3
2014-03-19 18:12:39.684 Cellular Radar[3338:60b] Sleep for (2055.000000 seconds | 34.250000 minutes | 0.570833 hours)

计算两个位置之间的秒（或毫秒）

0 个答案: