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Formatting text question in relation to sampleImage Hack
So I am using the cool sampleImage hack to interactively move a solid based on the length of written type. Its working great for some things but I have an issue. I have two lines of text sometimes. I would like the two lines oftext to be left aligned. The solid is aligned to the left edge. As I type in either line I would the size of the sampleimage to expand from the right side. Sorry if this is confusing. Is there a text formatting expression I can use to do this over the two lines
Thanks
AK
L = thisComp.layer("TYPE HERE");
for (i = 0; i <= thisComp.width; i++){
temp = L.sampleImage([i,thisComp.height/2],[0.5,thisComp.height/2],true,time);
if (temp[3] > 0) break;
}
[i-20,value[1]] -
4 Replies
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Something like this, I think:
rightMargin = 400;for (i = thisComp.width; i >= 0; i--){
temp = sampleImage([i,thisComp.height/2],[0.5,thisComp.height/2],true,time);
if (temp[3] > 0) break;
}value - [i-rightMargin,0]
Dan
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Thanks Dan, I think thats got it working!
I don’t suppose you be open to doing a line by line breakdown of how the sampleImage hack works? I understand some of the code, but I’d love to fully comprehend the why of this one.
Either ways Thanks very Much.
AK
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It’s a loop that (in this case) starts at the right edge of the comp and moves left a pixel at a time, sampling an area 1 pixel wide by the height of the comp. As soon as it finds a sample with non-zero alpha, it breaks out of the loop, leaving variable i set to the horizontal pixel corresponding to the right edge of the text.
Dan
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awesome, thanks again man. I notice that if you RAM preview this, it jumps around alot, but appears to render out to QT movie rock steady. . .
AK
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