i would like to convert all line segments into curve segments from the active selection at once .... any script

Hello,

If you're using Adobe Illustrator, you can use a JavaScript script to convert line segments to curve segments:

Open Adobe Illustrator.
Open the Script Editor (File > Scripts > Other Script…).
Copy and paste the following JavaScript code into the Script Editor: 

// Adobe Illustrator JavaScript to convert all line segments to curve segments

function convertLinesToCurves() {
var doc = app.activeDocument;
var selectedItems = doc.selection;

if (selectedItems.length === 0) {
alert('Please select at least one path.');
return;
}

for (var i = 0; i < selectedItems.length; i++) {
var item = selectedItems[i];
if (item.typename === 'PathItem') {
convertPathToCurves(item);
}
}
}

function convertPathToCurves(pathItem) {
pathItem.pathPoints.forEach(function(point, index) {
if (index < pathItem.pathPoints.length - 1) {
// Convert line segments to curve segments
pathItem.pathPoints[index].anchor = [point.anchor[0], point.anchor[1]]; // You might want to customize how you convert points to curves
pathItem.pathPoints[index + 1].anchor = [point.anchor[0], point.anchor[1]];
}
});
pathItem.pathPoints[0].anchor = pathItem.pathPoints[pathItem.pathPoints.length - 1].anchor;
pathItem.closed = true;
pathItem.selected = false;
}

convertLinesToCurves();

Save and run the script.

Hope that helps!

Best Regard,

Official Site