jsx script illustrator - replace items color with a corresponding swatch pattern

Question

I am attempting to create a script to replace all the colors in a picture with a number pattern. I have created a script but it does not work as intended.

The picture is coloured with swatches and need to be replaced by a swatch with the same name but for a "." at the end, i.e. all items of colour Bh will need to be replaced with Bh. pattern.

doc = activeDocument,

swatches = doc.swatches,

items = doc.pathItems;

var correspondingSwatch;

for (var c = 0; c < swatches.length; c++) {

correspondingSwatch = null

for (var i = 0; i < swatches.length; i++) {

if (swatches.name == swatches.name + "." ) correspondingSwatch = swatches;

}

if (correspondingSwatch != null) {

for (var i = 0; i < items.length; i++) {

if (items.fillColor == swatches.color) items.fillColor= correspondingSwatch.color;

}

The first and second for loop work as intended but the third for loop does not.

(items.fillColor == swatches.color) i want this to return true when the color of the item is the same as the swatches but it does not.

(items.fillColor = correspondingSwatch.color) i want this to fill in the item with the correspondingSwatch pattern, not the color. However I do not know the syntax to use a swatches color to paint an item.

Thank you any one who gives this a read, i am familiar with programming but am just starting on adobe illustrator scripting.

If you could change the code and send it back that would be great, or even telling me what methods or variables to use.

CarlosCanto · Accepted Answer

since we're in a controlled environment, I assume all swatches have their corresponding pattern replacement swatch. That being said, we don't need to compare swatch names (we assume all pattern swatches correctly named exist).

to avoid looping through all swatches in a document (in case there are hundreds of swatches), I recommend moving all your cat swatches into their own group. Then we safely go through all swatches in the swatch group, get their swatch names, select all with the same color, get the corresponding pattern swatch and replace colors

move all swatches to their own group, in this example I named my swatch group "colors"

after running the script

// replace swatch colors
// CarlosCanto
// https://forums.adobe.com/thread/2434441
function main() {
    var idoc = app.activeDocument;
    var colorgroup = idoc.swatchGroups['colors'];
    
    var swatches = colorgroup.getAllSwatches();
    var swatchcount = swatches.length;
    var swatch, a, replacementSwatch;
    for (a=0; a<swatchcount; a++) {
        swatch = swatches;
        
        replacementSwatch = idoc.swatches[swatch.name+'.'];
        
        // deselect All
        idoc.selection = null;
        
        idoc.defaultFillColor = swatch.color; 
        
        // select same fill
        app.executeMenuCommand("Find Fill Color menu item");
        
        // apply replacement swatch color to selection
        idoc.defaultFillColor = replacementSwatch.color;
    }
}
main ();

Silly-V · Answer

Comparing color objects does not work as seen in this test:

So for process colors, we have to compare the color values. But for pattern colors, it's a whole different animal - you would have to look at the name property of the PatternColor.pattern object, and compare that name to the name of your swatch.

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