Expression needed! Thanks:)

[Dan Ebberts]

I can’t think of a good way to do that with images. If you could find a font with acceptable up and down arrow characters, you could use a source text expression like this to convert the “+” and “-” characters:


s = "";
for (i = 0; i < value.length; i++){
if (value[i] == "+")
s += String.fromCharCode(0x2191)
else if (value[i] == "-")
s += String.fromCharCode(0x2193)
else
s += value[i];
}


Than you could add a fill color animator set to red, add an expression selector, delete the range selector and add an Amount expression like this for the expression selector:

s = text.sourceText;
if (s[textIndex-1] == String.fromCharCode(0x2193)) 100 else 0

Then add another fill color animator set to green and do the same as above except use this expression:

s = text.sourceText;
if (s[textIndex-1] == String.fromCharCode(0x2191)) 100 else 0

Something like that.

Dan

[Bojan Drobnjak]

Thanks for the reply Dan.

It seems to work, at least partially. The green/red signs do not render out until I actually double click the text layer. The rest works pretty nice 🙂

https://i.imgur.com/swE5ikZ.jpg

ps. would it be possible for the expression to call for a composition (which will contain an arrow)? instead of an image

View post on imgur.com

[Dan Ebberts]

I’m not sure what you mean by “call”, but I’m pretty sure the answer is no.

You could do what you’re trying to using a script to align multiple text layers and images. The only way I know of to do it with an expression would be to use the sampleImage() hack, which generally has a huge impact on performance.

Dan

[Bojan Drobnjak]

I meant to say if it would be posible to use a comp or a layer with an image to achieve something similar. Could I have two layers (red arrow and green arrow), both hidden, and then after I paste the text the expression would control the opacity or visibility of the layer. – would make the red layer visible and + would make the green layer visible

[Dan Ebberts]

You could do that with an opacity expression like this for “+”:

s = thisComp.layer(“Your Text Layer”).text.sourceText;
s.indexOf(“+”) < 0? 0 : 100

and like this for “-“:

s = thisComp.layer(“Your Text Layer”).text.sourceText;
s.indexOf(“-“) < 0? 0 : 100

Dan

[Bojan Drobnjak]

Excellent mate, thank you! How much are you payed for this forum tutoring? 😀