How create a mixedcolor in javascritp

Question

Below a segment of my scritp but there is an error in the assignment of colors
try{
myDocument.colors.item("doublecolor").name;
catch (myError){
   myDocument.mixedInks.add({name:"sbalzooro", model:ColorModel.MIXEDINKMODEL, space:ColorSpace.MIXEDINK,inkList:["Process Cyan","Process Magenta","sbalzo", "PANTONE 871 C"],inkPercentages:[0,0,100,100]});
thanks

Answer 1

Hi Davide,
MixedInks.add(…) expects the following arguments, in that order:
• inkList (array of Inks or MixedInkGroup)
• inkPercentages (Array of numbers)
• withProperties (Object w/ additional mixed ink props — optionnal)
Note that inkList, if supplied as an array, must contains actual existing (=valid) Ink specifiers (rather than ink names). So I suggest you implement a ink validator routine.
Here is a possible approach:
// Your settings
var MY_MIX_INKS = {
    // Valid ink names are required -- At least 2 process inks are required
    'Process Cyan'    :   0,      // Process1 : %
    'Process Magenta' :   0,      // Process2 : %
    'sbalzo'          : 100,      // Custom1  : %
    'PANTONE 871 C'   : 100       // Custom2  : %
    MY_MIX_NAME = 'doublecolor';
// Ink Validator
var validateInkData = function(/*{name: %}*/o, /*inks*/c, /*&inklist*/ll, /*&inkPerc*/pp)
    var k, t, z=0, r=1;
    ll.length = pp.length = 0;
    for( k in o )
        if( !o.hasOwnProperty(k) ) continue;
        if( !(t=c.itemByName(k)).isValid ){ r=0; break; }
        ll[z] = t.getElements()[0];
        pp[z++] = +o[k];
    return r;
// Main process
var doc = app.activeDocument,
    inkList,    // will receive validated ink list (array)
    inkPerc;    // corresponding percentages (array)
if( !doc.mixedInks.itemByName(MY_MIX_NAME).isValid )
    if( validateInkData(MY_MIX_INKS, doc.inks, inkList=[], inkPerc=[]) )
        doc.mixedInks.add(inkList, inkPerc,
            name: MY_MIX_NAME,
            model: ColorModel.MIXEDINKMODEL,
            space: ColorSpace.MIXEDINK
        alert( "The mixed ink '" + MY_MIX_NAME + "' has been successfully created." );
    else
        alert( "Unable to create mixed ink. Some inner inks are missing." );
else
    alert( "The mixed ink '" + MY_MIX_NAME + "' already exists." );
@+
Marc