Image trace in js script

[никс66165976]

Hi!

I'm trying to trace a PNG image in Adobe Illustrator via js script. I've tried different approaches, but always have the same problem - I can't change Color setting automatically. Here is my simple script:

thisImage.tracing.tracingOptions.tracingMethod = TracingMethodType.TRACINGMETHODABUTTING;  
thisImage.tracing.tracingOptions.tracingMode = TracingModeType.TRACINGMODECOLOR;  
thisImage.tracing.tracingOptions.cornerFidelity = 50;  
thisImage.tracing.tracingOptions.pathFidelity = 55;  
thisImage.tracing.tracingOptions.noiseFidelity = 5;  
thisImage.tracing.tracingOptions.maxColors = 40;  
thisImage.tracing.tracingOptions.colorFidelity = 50;  
app.redraw();

So other parameters were changed during this script execution (Paths, Corners, Noise), but Colors is 100 again despite maxColors and colorFidelity. And I don't see any additional fields in tracing options that can be responsible for this.

Could you please give me any advise how to solve this issue?

[CarlosCanto]

first you need to Trace your image, that would return a PluginItem where you can point to a TracingObject that you can adjust properties to,

var tracedImage = thisImage.trace();

tracedImage.tracing.tracingOptions.tracingMethod = TracingMethodType.TRACINGMETHODABUTTING;

[никс66165976]

thisImage is traced image already.

So

var thisImage = selectedImage.trace();

and it's located one line before my code. By the way, I said earlier that other parameters like pathFidelity set without any problems.

[CarlosCanto]

oh, I see, sorry about that.

[CarlosCanto]

it could be a bug, I have tried to use TRACINGMODE without success in the past. I solved my problem by recording an Action to Trace the object, then have my script play the action.

[никс66165976]

CarlosCanto, It looks like a bug for me too. Thank you for a nice approach to playing action in the script. I'll definitely check it if I can't find out how it should work in the script.

[pixxxelschubser]

How about to call a user defined preset

//var myOpts = thisImage.tracing.tracingOptions.loadFromPreset('Line Art');
var myOpts = thisImage.tracing.tracingOptions.loadFromPreset('User defined Preset');

[никс66165976]

pixxxel schubser, with predefined preset, I have another issue. When I load this preset in the script, it switches to a limited palette, with only 30 max colours.  And my image is traced with this parameters. But when I load this preset in GUI, it works as expected.

[pixxxelschubser]

I'm not agree with you.

0. Define your tracing preset ( in my example the name of the preset is: [User defined Preset] )

1. Place an image in Illu ( I placed an screenshot)

2. Use any preset (e.g. Black&White)

3. Run the script snippet

All predefined settings are available now.

[никс66165976]

Yes, I made an inaccuracy. What I meant:

I have a preset:

So in this preset Colors parameter equals to 40.

Also, I run this code:

And I have a result:

As you can see not only cornerFidelity has changed, but Colors too. And it stands for 100.

Previously, I tried to set colorMode, and I had this issue with limited colors.

And the main trouble - I don't know how to change Colors parameter from a script. Because in any case, it stands for 100. And I can see that there are no differences, despite my options.