• Adobe After Effects Expressions

  Countdown Timer: millisecond goes into minus numbers

  Posted by Zac Pickin on February 28, 2019 at 2:49 pm

  Having trouble with a countdown timer using a slider control, when the milliseconds go below a certain number the final character goes into minus numbers. I am sure it’s a really simple expression change I just can’t work it out. If anyone could help that would be great,

  If anyone needs anymore information please shout, thanks!

  rateOfSpeed = 1 ;
rateOfSpeedMilli = 100;
clockStartTime = thisComp.layer("Timer Duration").effect("Slider Control")("Slider")*60;

  function addZero(n) {
  if (n<10) return "0" + n else return n;
  }

  clockTimeNumber = Math.floor(clockStartTime - rateOfSpeed*time);
  clockTimeNumberMilli = Math.floor(clockStartTime - rateOfSpeedMilli*time);

  minutes = Math.floor(clockTimeNumber/60);
  seconds = clockTimeNumber%60;
  milliseconds = clockTimeNumberMilli%100;

  if (clockStartTime > 0 && time < clockStartTime) {
addZero(minutes) + ":" + addZero(seconds) + ":" + addZero(milliseconds);
} else {"00:00:00"};

  Oleg Pirogov replied 7 years, 4 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Oleg Pirogov

  February 28, 2019 at 10:24 pm

  I suppose, this Math.floor(clockStartTime – rateOfSpeedMilli*time) is negative most of the time.
  I suppose, this Math.floor(rateOfSpeedMilli*(clockStartTime – time)) is what you meant it to be.

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