scaling with expressions

[Clemensk]

i found a simple solution myself but maybe you can help me to improve the script. the layer is scaled now linear from 0 to 63 beginning at the inpoint. It would surely look better if it goes from for example from 0 to 80 in 10 frames and from 80 to 63 in 3 frames.

any ideas.

best regards
Clemens

adjust = 90

temp= time – inPoint;
temp = temp * adjust
temp =Math.min(temp, 63) ;

outtemp= outPoint -time;
outtemp = outtemp * adjust
outtemp =Math.min(outtemp, 63) ;
temp =Math.min(temp, outtemp) ;

[temp,temp]

[Dan Ebberts]

I’m not sure what your expression does, but I think this one does what you originally asked for:

f = 10; // number of frames to ramp
t = f*thisComp.frameDuration;
s = Math.min(linear(time,inPoint,inPoint+t,0,100),linear(time,outPoint-t,outPoint,100,0));
[s,s]

Dan

[Clemensk]

thank you for your reply.

nice script, looks much better than the one i figured out, but basically they do the same. Do you have a solution for my second question too? some sort of easing which slightly overshoots the target value.
for example 0 > 120 > 100

???

Clemens

[Dan Ebberts]

OK – try this:

f1 = 10; // ramp on/off frames
f2 = 3; // overshoot frames

max = 80; //maximum scale value
hold = 63; // hold scale value

t1 = f1*thisComp.frameDuration;
t2 = f2*thisComp.frameDuration;

if (time <= inPoint + t1 + t2){ s = Math.min(linear(time,inPoint,inPoint+t1,0,max),linear(time,inPoint+t1,inPoint+t1+t2,max,hold)); }else{ s = linear(time,outPoint-t1,outPoint,hold,0); } [s,s] Dan