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Using JSX to add lines between objects

Participant ,
Mar 11, 2023 Mar 11, 2023

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I am trying to createa ascript that places a horizontal line between selected objets. Could someone eyball this and tell me where I'm going wrong?

 

Thanks

 

// Get the active document
var myDoc = app.activeDocument;
// Get the selection
var mySelection = myDoc.selection;
// Check if at least two objects are selected
if (mySelection.length < 2) {
alert("Please select at least two objects.");
} else {
// Get the page of the first selected object
var myPage = mySelection[0].parentPage;
// Get the geometric bounds of the selection
var myBounds = mySelection[0].geometricBounds;
for (var i = 1; i < mySelection.length; i++) {
var objBounds = mySelection[i].geometricBounds;
if (objBounds[0] < myBounds[0]) {
myBounds[0] = objBounds[0];
}
if (objBounds[1] < myBounds[1]) {
myBounds[1] = objBounds[1];
}
if (objBounds[2] > myBounds[2]) {
myBounds[2] = objBounds[2];
}
if (objBounds[3] > myBounds[3]) {
myBounds[3] = objBounds[3];
}
}
// Calculate the center of the selection
var myX1 = myBounds[0];
var myY1 = myBounds[1];
var myX2 = myBounds[2];
var myY2 = myBounds[3];
var myCenter = (myY1 + myY2) / 2;
// Add a horizontal line to the page
var myLine = myPage.lines.add({
geometricBounds: [myCenter + "p", "36p", (myCenter + 1) + "p", (myPage.bounds[3] - 36) + "p"],
strokeColor: myDoc.swatches.itemByName("Black"),
strokeWeight: 0.5,
strokeTint: 100,
strokeAlignment: StrokeAlignment.centerAlignment
});
}
TOPICS
How to , Import and export , Publish online , Scripting , SDK , UXP Scripting

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correct answers 1 Correct answer

Advisor , Mar 11, 2023 Mar 11, 2023

Hello @ht354,

You'll need to use...

 

var myLine = myPage.graphicLines.add

 

 to add a graphic line.

 

Regards,

Mike

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People's Champ ,
Mar 11, 2023 Mar 11, 2023

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Well, I just copied/pasted your script and ran it. Then I got the error which is pretty explicit. In your case, script fails here:

myPage.lines.add…

Which means the Page object doesn't understand what lines is as a property. So next question is: is Line a regular property of Page object and answer is here:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Page.html

I think I now understand why some folks warned me about people asking for help when they asked ChatGPT to create a script that doesn't work but don't understand why.

You will find more interest in the long-term understanding of the deep concepts of InDesign Scripting.

Loic

 

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Advisor ,
Mar 11, 2023 Mar 11, 2023

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Hello @ht354,

You'll need to use...

 

var myLine = myPage.graphicLines.add

 

 to add a graphic line.

 

Regards,

Mike

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Participant ,
Mar 12, 2023 Mar 12, 2023

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That worked! Thank you. The whole line versus graphic line is very confusing in the Adobe Documentation as you read through it. As a newbie dipping his toes into Extendscript programing I can see its power but I can also see why so very few people delve into it for InDesign. For example the script places a horizontal line on the page but it is at a 10° angle, enbedded into a layer without beingselected to show without having to manually go to Layers and select and enable the horizontal line.

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Community Expert ,
Mar 12, 2023 Mar 12, 2023

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Hi @ht354 , I haven’t tested your script, but the geometricBounds array is Y1,X1,Y2,X2, not X1,Y1,X2,Y2, which might explain the angle you are getting. To select a page item, you have to use the select() method—myLine.select()

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