Dynamic Text scaling to fit inside of a shape ?

[Dan Ebberts]

Try this:

L = thisComp.layer(“Shape Layer 1”);
rL = L.sourceRectAtTime(time,false);
r = sourceRectAtTime(time,false);
hisUL = L.toComp([rL.left,rL.top]);
hisLR = L.toComp([rL.left+rL.width,rL.top+rL.height]);
myUL = toComp([r.left,r.top]);
myLR = toComp([r.left+r.width,r.top+r.height]);
w = (hisLR[0]-hisUL[0])/(myLR[0]-myUL[0]);
h = (hisLR[1]-hisUL[1])/(myLR[1]-myUL[1]);
[value[0]*w,value[1]*h]

Dan

[Kevin Camp]

to constrain the proportions, you just need to use the same value for x and y scale… if you wanted to fit to either the height or width, you could use a Math.min() function .
// grab sourceRect based on layer time
R = sourceRectAtTime(sourceTime(time), true);

// calculate scale relative to comp
w = thisComp.layer("Shape Layer 1").content("Rectangle Path 1").size[0] / R.width * 100;
h = thisComp.layer("Shape Layer 1").content("Rectangle Path 1").size[1] / R.height * 100;

s = Math.min ( w, h );

[ s, s ]

Kevin Camp
Art Director
KCPQ, KZJO & KRCW

[Ricky London]

Hi Guys I am trying to put this expression on my text layer scale property and i’m getting this error:

error at line 5 property ‘scale’ of layer (text) in comp 1.

property or method named rectangle path 1 in class ‘group’ is missing?

any ideas where I am going wrong?

Thanks,Ricky.

// grab sourceRect based on layer time
R = sourceRectAtTime(sourceTime(time), true);

// calculate scale relative to comp
w = thisComp.layer("Shape Layer 1").content("Rectangle Path 1").size[0] / R.width * 100;
h = thisComp.layer("Shape Layer 1").content("Rectangle Path 1").size[1] / R.height * 100;

s = Math.min ( w, h );

[ s, s ]

[Dan Ebberts]

Is your shape layer not a rectangle?

Dan

[Wes Kennison]

Hey Ricky, any chance you figured this out? I’m having an identical issue with the line 5 expression error not being able to reference the Rectangle path though it’s very clearly a rectangle. Any input would be hugely appreciated, thanks!

[Joe Wood]

Did you try tying to the scale of the shape layer itself instead of the scale of the rectangle?

// grab sourceRect based on layer time
R = sourceRectAtTime(sourceTime(time), true);

// calculate scale relative to comp
w = thisComp.layer("Shape Layer 1").transform.scale[0] / R.width * 100;
h = thisComp.layer("Shape Layer 1").transform.scale[1] / R.height * 100;

s = Math.min ( w, h );

[ s, s ]

[Paul Connors]

Hi Kevin. I can’t tell you how many times I’ve used this expression in the past. It’s one of my favorites! I did have a question for you though … do you know if there is a way to ignore ascenders and descenders in words that have accents like Ç or Á ? Thanks very much!