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Wordwrap expression, count the number of lines, use the variable elsewhere
Consider the following expression:
var str = text.sourceText;
var lines = str.split(‘\n’);
var longestLineLength = 0;
for (var i = 0; i < lines.length; i++) {
if (lines[i].length > longestLineLength) {
longestLineLength = lines[i].length;
}
}
var maxW = longestLineLength <= 20 ? 20 : 40;
str = wordWrap(str, maxW);
var lineCount = str.split(‘\n’).length;
function wordWrap(str, maxW) {
var newLineStr = “\n”;
done = false;
res = ”;
while (str.length > maxW) {
found = false;
for (i = maxW – 1; i >= 0; i–) {
if (testWhite(str.charAt(i))) {
res = res + [str.slice(0, i), newLineStr].join(”);
str = str.slice(i + 1);
found = true;
break;
}
}
if (!found) {
res += [str.slice(0, maxW), newLineStr].join(”);
str = str.slice(maxW);
}
}
return res + str;
}
function testWhite(x) {
var white = new RegExp(/^\s$/);
return white.test(x.charAt(0));
};
text.sourceText = str;
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It wraps text exactly as it should, but I would like to reference the variable “lineCount” in another property and use it to drive other expressions. I cannot attach it to a slider as the lineCount will change constantly based on user input. It does output the correct lineCount, so I know it’s working. I just need to use the variable to drive other expressions while still allowing it to change dynamically. Is this possible?
replied 1 year, 5 months ago 3 Members · 4 Replies
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4 Replies
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You could use the hack where you save the value of that variable as the result of the expression for negative time by replacing the last line of your expression with this:
time < 0 ? lineCount : str
then you could retrieve the number from a different property, like this:
parseInt(thisComp.layer("Text").text.sourceText.valueAtTime(-1)); -
Interesting idea, Dan. I will try this out over the evening and get back to you tomorrow with results. Thank you for your input. Always appreciated!
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Oh my god it works perfectly for my use. This is amazing. Thank you so much for this hack! Very creative!!
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Thank you Dan!
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