• Adobe After Effects

  Scale expression

  Posted by Chris Holland on September 10, 2019 at 4:17 pm

  Hi,

  I need to create a map using dots, I want the dots to scale from 0-100 randomly over the space of 3 seconds to reveal/build the map.

  I came across a post on here where someone had the exact same problem and the answer was this expression. He used it for opacity so I’m hoping it will work for scale?

  I should also mention that I tried this expression on the opacity but I got an error message.

  Do I have to change any of the elements within this expression for it to work? Is some of the text placeholder for someone to put in certain dimensions? I’m a novice with expressions so I apologise for my lack of knowledge!

  maxTime = 3; // max time for all dots to appear
  seedRandom(index,true);
  myTime = random(maxTime);
  if (time > myTime) 100 else 0

  Thanks, I really hope you can help.

  Dan Ebberts replied 6 years, 11 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  September 10, 2019 at 4:46 pm

  Try this:

  maxTime = 3; // max time for all dots to appear
  rampTime = .1;
  seedRandom(index,true);
  myTime = random(maxTime-rampTime);
  s = linear(time,myTime,myTime+rampTime,0,100);
  [s,s]

  Dan

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