[Dan Ebberts]

This should do it:

fadeInTime = 1; // fade in time (seconds)
fadeOutTime = 1;

Math.min(linear(time,inPoint,inPoint + fadeInTime,0,100),linear(time,outPoint – fadeOutTime,outPoint,100,0))

Dan

[Dan Ebberts]

Something like this should do it:

rate1 = 90; // initial rate (degrees per second)
rate2 = 360; // final rate
rampStart = 3; // start of ramp final rate (seconds)
rampEnd = 5; // end of ramp to final rate

if (time < rampStart){ rate1*time }else if (time < rampEnd){ rate = linear(time,rampStart,rampEnd,rate1,rate2); rate1*rampStart + (rate + rate1)*(time - rampStart)/2 }else{ rate1*rampStart + (rate2 + rate1)*(rampEnd - rampStart)/2 + rate2*(time - rampEnd) } Dan

[Dan Ebberts]

Something like this should do it:

rate1 = 90; // initial rate (degrees per second)
rate2 = 360; // final rate
rampStart = 3; // start of ramp final rate (seconds)
rampEnd = 5; // end of ramp to final rate

if (time < rampStart){ rate1*time }else if (time < rampEnd){ rate = linear(time,rampStart,rampEnd,rate1,rate2); rate1*rampStart + (rate + rate1)*(time - rampStart)/2 }else{ rate1*rampStart + (rate2 + rate1)*(rampEnd - rampStart)/2 + rate2*(time - rampEnd) } Dan

[Dan Ebberts]

If it’s a step change, you could do it like this:

rate1 = 180; // initial rate (degrees per second)
rate2 = 360; // final rate
speedUpTime = 3; // time to start using final rate (seconds)

if (time < speedUpTime){ rate1*time }else{ rate1*speedUpTime + rate2*(time - speedUpTime) } If you need it to ramp up to the new speed it's a little more complicated, but still doable. Dan

[Dan Ebberts]

If it’s a step change, you could do it like this:

rate1 = 180; // initial rate (degrees per second)
rate2 = 360; // final rate
speedUpTime = 3; // time to start using final rate (seconds)

if (time < speedUpTime){ rate1*time }else{ rate1*speedUpTime + rate2*(time - speedUpTime) } If you need it to ramp up to the new speed it's a little more complicated, but still doable. Dan

[Dan Ebberts]

Horning in always welcome. 🙂

Dan

[Dan Ebberts]

Horning in always welcome. 🙂

Dan

[Dan Ebberts]

This might give you some ideas.

This opacity expression will make your layers turn on exponentially:

dur = 3; // time for all layers to appear (seconds)
num = 300; // total number of layers

idx = Math.exp((time/dur)*Math.log(num)) – 1;
if (idx >= index) 100 else 0

This position expression will position them randomly within the comp:

seedRandom(index,true);
random([0,0],[thisComp.width,thisComp.height])

Apply those two expressions to a star layer and duplicate it 299 times and preview it.

Dan

[Dan Ebberts]

This might give you some ideas.

This opacity expression will make your layers turn on exponentially:

dur = 3; // time for all layers to appear (seconds)
num = 300; // total number of layers

idx = Math.exp((time/dur)*Math.log(num)) – 1;
if (idx >= index) 100 else 0

This position expression will position them randomly within the comp:

seedRandom(index,true);
random([0,0],[thisComp.width,thisComp.height])

Apply those two expressions to a star layer and duplicate it 299 times and preview it.

Dan

[Dan Ebberts]

It looks like Globat has resolved their problem and my site is back on the air.

Dan