reversed scale

Filip Vandueren
November 20, 2008 at 11:29 am
```
s=comp("00148P.mov ansikte").layer("00148P.mov").transform.scale;
[10000/s[0],10000/s[1]];
// or
[10000/s[0],10000/s[1],10000/s[2]];
```
Hi Goran,

if by reverse you mean 50% -> 200%
try this expression (for 2D)

for 3D use the lqst line
Göran Thorén
November 20, 2008 at 11:39 am

Thank´s a million Filip! It worked like a charm!
Filip Vandueren
November 20, 2008 at 1:13 pm

of course, watch out for scale [0,0,0] you will get divide by zero errors
Göran Thorén
November 20, 2008 at 2:32 pm

Ok, will do.
Could you explain what the expreesion does exactly?
Darby Edelen
November 21, 2008 at 5:44 pm

10000 is 100 squared.

You’re dividing 100 squared by whatever your scale happens to be. So at 100% scale your result will be 100%:

100 * 100 / 100 = 100

This can also be written as:

100 * (100 / scale)

As you decrease the scale value below 100 the second term (100 / scale) will increase in value. At 50% scale the second term will evaluate to 2 which results in 100 * 2 or 200%:

100 * (100 / 50) = 100 * 2 = 200%

Does that help at all?

Darby Edelen
Göran Thorén
November 22, 2008 at 8:52 am

Thank´s Darby!
I´m really poor when it comes to math unfortunately, I´m more of a visual person. But it was well explained so I think I get the essense of it. 🙂
I could never figure things like that out myself. I wish I could though. Thank god for guys like you!

Göran

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