Find Lab Color of Selected Object

Question

var doc = app.activeDocument;var sel  = doc.selection;var result= new LabColor();function getColorValues ( color ) {      if ( color === undefined ) return undefined;          else if ( color.typename === 'CMYKColor' ) return [ color.cyan, color.magenta, color.yellow, color.black ];          else if ( color.typename === 'RGBColor' ) return [ color.red, color.green, color.blue ];          else if ( color.typename === 'LabColor' ) return [ color.l, color.a, color.b ];          else if ( color.typename === 'SpotColor' ) return getColorValues( color.spot.color );          else if ( color.typename === 'GrayColor' ) return [ color.gray ];      }function translatetolab(objerenk) {    sourceColorSpace = ImageColorSpace.RGB;    destColorSpace =  ImageColorSpace.LAB;    result= new LabColor().hostObjectDelegate;      result = app.convertSampleColor(ImageColorSpace.RGB, objerenk, ImageColorSpace.LAB, ColorConvertPurpose.defaultpurpose);    alert (result);        }renk.red = sel[0].fillColor.red;renk.green =  sel[0].fillColor.green;renk.blue=  sel[0].fillColor.blue;renkrgb =  (getColorValues(renk));translatetolab(renkrgb);Hello I am trying to find lightness value of selected object's fill color. Above I tried to convert RGB color to LAB. But even my objects fill color is  %100 black or white it shows an array like 0,-0,4,0,4 and also I am not sure if my way is correct may be there would be an easier way. Please note that I am still new to extendscript.What I am exactly trying to do is operating objects depending their lightness values. Thank you,Best Regards.

arteangelus · Answer

I guess I have done it but still It might be better any recommendations would be great, for example scaling it in percentage while preserving item's original size.(Only decreasing its size may be...)

#target illustrator
var doc = app.activeDocument;
var selected = doc.selection;
var endIndex = selected.length;
var item = doc.pathItems;
var result= new LabColor().hostObjectDelegate;
var itemcolor= new RGBColor();
function getColorValues ( color ) {
    if ( color === undefined ) return undefined;
        else if ( color.typename === 'CMYKColor' ) return [ color.cyan, color.magenta, color.yellow, color.black ];
        else if ( color.typename === 'RGBColor' ) return [ color.red, color.green, color.blue ];
        else if ( color.typename === 'LabColor' ) return [ color.l, color.a, color.b ];
        else if ( color.typename === 'SpotColor' ) return getColorValues( color.spot.color );
        else if ( color.typename === 'GrayColor' ) return [ color.gray ];
    }
function translatetolab(objerenk) {
    sourceColorSpace = ImageColorSpace.RGB;
    destColorSpace =  ImageColorSpace.LAB;
    result = app.convertSampleColor(ImageColorSpace.RGB, objerenk, ImageColorSpace.LAB, ColorConvertPurpose.defaultpurpose);
    //alert (result);
    return result[0];
    }
for(i=0; i<endIndex; i++) {
itemcolor.red =  item.fillColor.red;
itemcolor.green =  item.fillColor.green;
itemcolor.blue=  item.fillColor.blue;
itemcolorrgb =  (getColorValues(itemcolor));
lightnessvalue = translatetolab(itemcolorrgb);
item.resize(
    lightnessvalue*2, // x
    lightnessvalue*2, // y
    true, // changePositions
    true, // changeFillPatterns
    true, // changeFillGradients
    true, // changeStrokePattern
    );
}

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded