Photoshop script to invert curves

[orfeas a.]

I want to create a script that will invert/swap the input and output values of all the points in each channel of a selected curves adjustment layer.

For example, the script should turn this curve:

into this:

This adjustment should be applied to all channels in the curves (RGB, Red, Green, Blue) and to all existing points. I don't have a lot of experience with photoshop scripting but i tried to write it myself and i couldn't figure out where photoshop stores the existing point input and output values. Any help would be appreciated.

[UNFOTONY]

Unfortunately no...

[r-bin]

Unfortunately no...

By UNFOTONY

The very last try ).

New stub code at the beginning.

////////////////////////////////
// False (idle) editing of the adjustment layer 
// in order to remove the "auto" property from the descriptor 
// and get real points.

var d = new ActionDescriptor();
var r = new ActionReference();
r.putEnumerated(stringIDToTypeID("adjustmentLayer"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));
d.putReference(stringIDToTypeID("null"), r);
var d1 = new ActionDescriptor();
var list = new ActionList();
var d2 = new ActionDescriptor();
var r1 = new ActionReference();
r1.putEnumerated(stringIDToTypeID("channel"), stringIDToTypeID("channel"), stringIDToTypeID("composite"));
d2.putReference(stringIDToTypeID("channel"), r1);
d2.putBoolean(stringIDToTypeID("auto"), false);
list.putObject(stringIDToTypeID("curvesAdjustment"), d2);
d1.putList(stringIDToTypeID("adjustment"), list);
d.putObject(stringIDToTypeID("to"), stringIDToTypeID("curves"), d1);
executeAction(stringIDToTypeID("set"), d, DialogModes.NO);

////////////////////////////////

var adj = get_prop_value("layer", null, "adjustment", 0);

var adjustment = adj.getList(stringIDToTypeID("adjustment"));
var new_adjustment = new ActionList();

for (var i = 0; i < adjustment.count; i++)
    {
    var curvesAdjustment = adjustment.getObjectValue(i);
    var new_curvesAdjustment = new ActionDescriptor();

    var channel = curvesAdjustment.getReference(stringIDToTypeID("channel"));

    var curve = curvesAdjustment.getList(stringIDToTypeID("curve"));

    var new_curve = new ActionList();

    for (var n = 0; n < curve.count; n++)
        {
        var point = curve.getObjectValue(n);

        var new_point = new ActionDescriptor();

        var x = point.getDouble(stringIDToTypeID("horizontal"));
        var y = point.getDouble(stringIDToTypeID("vertical"));

        new_point.putDouble(stringIDToTypeID("horizontal"), y);
        new_point.putDouble(stringIDToTypeID("vertical"),   x);
    
        new_curve.putObject(stringIDToTypeID("point"), new_point);
        }

    new_curvesAdjustment.putReference(stringIDToTypeID("channel"), channel);
    new_curvesAdjustment.putList(stringIDToTypeID("curve"), new_curve);

    new_adjustment.putObject(stringIDToTypeID("curvesAdjustment"), new_curvesAdjustment);
    }

adj.erase(stringIDToTypeID("adjustment"));
adj.putList(stringIDToTypeID("adjustment"), new_adjustment);

edit_adjustment_layer("curves", adj, false);

////////////////////////////////////////////////////////////////////////////////////////////
function edit_adjustment_layer(type, data, dlg)
    {
    try { 
        if (type == null || type == undefined) type = get_prop_value("layer", null, "adjustment").getClass(0);

        if (typeof(type) == "string") type = (type.length==4)?charIDToTypeID(type):stringIDToTypeID(type);

        var d = new ActionDescriptor();
        var r = new ActionReference();
        r.putEnumerated(stringIDToTypeID("adjustmentLayer"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));
        d.putReference(stringIDToTypeID("null"), r);

        if (data == null || data == undefined) d.putObject(stringIDToTypeID("to"), type, data);

        var ret = executeAction(stringIDToTypeID("set"), d, dlg==false?DialogModes.NO:DialogModes.ALL);

        if (ret.hasKey(stringIDToTypeID("to"))) 
            ret = ret.getObjectValue(stringIDToTypeID("to"));
        else 
            ret = null;

        return ret;
        }
    catch (e) { alert(e); return null; }
    }

////////////////////////////////////////////////////////////////////////////////////////////
function get_prop_value(class_key, id, prop_key)
    {
    try
        {
        if (typeof(class_key) == "string") class_key = stringIDToTypeID(class_key);
        if (typeof(prop_key)  == "string") prop_key  = stringIDToTypeID(prop_key);

        var r = new ActionReference();    

        if (prop_key != undefined) r.putProperty(stringIDToTypeID("property"), prop_key);

        if (id == undefined || id == null) r.putEnumerated(class_key, stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));
        else if (typeof(id) == "string")   r.putName(class_key, id);
        else                               r.putIdentifier(class_key, id);

        var desc;

        if (prop_key == undefined)
            {
            try { return executeActionGet(r); } catch (e) { return undefined; }
            }

        try { desc = executeActionGet(r); } catch (e) { return undefined; }     

        if (!desc.hasKey(prop_key)) return undefined;

        var ret = get_value(desc, prop_key);

        for (var i = 3; i < arguments.length; i++) 
            if (arguments[i] != undefined) ret = get_value(ret, arguments[i]);  

        return ret;

        function get_type(obj, key)
            {
            try 
                {
                if (obj == undefined) return undefined;            

                if (typeof(key) == "string") key = stringIDToTypeID(key);
        
                switch (obj.typename)
                    {
                    case "ActionDescriptor":  
                    case "ActionList"      : return obj.getType(key);
        
                    case "ActionReference" : return obj.getForm();
                    }
                }
            catch (e) { throw(e); }
            }
        
        function get_value(obj, key)
            {
            try 
                {
                if (obj == undefined) return undefined;            

                if (typeof(key) == "string") key = stringIDToTypeID(key);
        
                switch (obj.typename)
                    {
                    case "ActionDescriptor":  
                    case "ActionList"      : return get_desc_value(obj, key);
        
                    case "ActionReference" : return get_ref_value(obj);
                    }
                }
            catch (e) { throw(e); }
            }
        
        function get_desc_value(d, key)
            {
            try 
                {
                if (d == undefined) return undefined;            

                if (typeof(key) == "string") key = stringIDToTypeID(key);
        
                var val; 

                if (d instanceof ActionDescriptor && !d.hasKey(key)) return undefined;

                else if (d instanceof ActionList && key >= d.count) return undefined;

                var type = d.getType(key);
        
                switch (type) 
                    {
                    case DescValueType.ALIASTYPE:        val = d.getPath(key);             break;
                    case DescValueType.BOOLEANTYPE:      val = d.getBoolean(key);          break;
                    case DescValueType.CLASSTYPE:        val = d.getClass(key);            break;
                    case DescValueType.DOUBLETYPE:       val = d.getDouble(key);           break;  
                    case DescValueType.INTEGERTYPE:      val = d.getInteger(key);          break;
                    case DescValueType.LISTTYPE:         val = d.getList(key);             break;
                    case DescValueType.RAWTYPE:          val = d.getData(key);             break;
                    case DescValueType.STRINGTYPE:       val = d.getString(key);           break;
                    case DescValueType.LARGEINTEGERTYPE: val = d.getLargeInteger(key);     break;
                    case DescValueType.REFERENCETYPE:    val = d.getReference(key);        break;
                    case DescValueType.OBJECTTYPE:       val = d.getObjectValue(key);      break;
                    case DescValueType.UNITDOUBLE:       val = d.getUnitDoubleValue(key);  break;
                    case DescValueType.ENUMERATEDTYPE:   val = d.getEnumerationValue(key); break;
                    }
        
                return val;
                }
            catch (e) { throw(e); }
            }
        
        function get_ref_value(r)
            {
            try 
                {
                var val; 
        
                switch (r.getForm())
                    {
                    case ReferenceFormType.CLASSTYPE:  val = r.getDesiredClass();    break;
                    case ReferenceFormType.IDENTIFIER: val = r.getIdentifier();      break;
                    case ReferenceFormType.INDEX:      val = r.getIndex();           break;
                    case ReferenceFormType.NAME:       val = r.getName();            break;
                    case ReferenceFormType.OFFSET:     val = r.getOffset();          break;
                    case ReferenceFormType.ENUMERATED: val = r.getEnumeratedValue(); break;
                    case ReferenceFormType.PROPERTY:   val = r.getProperty();        break;  
                    }
        
                return val;
                }
            catch (e) { throw(e); }
            }
        }   
    catch (e) { throw(e); }
    }

[UNFOTONY]

Same error 😞

[UNFOTONY]

Adobe is reading our dialogue and just got the Photoshop Beta 24.7 update. One of the previous versions of the script works in it!

Thank you very much!!!

[UNFOTONY]

Hurry up. But I found an interesting feature. The script from this message works ONLY after running the last or penultimate script.
That is, I try to run the last script - an error occurs, but this one works after it. And only one specific layer. If you create a new layer, it no longer works.

[r-bin]

Yes, strange. Then paste this code at the very beginning of the script that seems to work after the error. The code is surrounded by try-catch and should not raise an error message. But I can't guarantee.

try {
var d = new ActionDescriptor();
var r = new ActionReference();
r.putEnumerated(stringIDToTypeID("adjustmentLayer"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));
d.putReference(stringIDToTypeID("null"), r);
var d1 = new ActionDescriptor();
var list = new ActionList();
var d2 = new ActionDescriptor();
var r1 = new ActionReference();
r1.putEnumerated(stringIDToTypeID("channel"), stringIDToTypeID("channel"), stringIDToTypeID("composite"));
d2.putReference(stringIDToTypeID("channel"), r1);
d2.putBoolean(stringIDToTypeID("auto"), false);
list.putObject(stringIDToTypeID("curvesAdjustment"), d2);
d1.putList(stringIDToTypeID("adjustment"), list);
d.putObject(stringIDToTypeID("to"), stringIDToTypeID("curves"), d1);
executeAction(stringIDToTypeID("set"), d, DialogModes.NO);
} catch(e) { }

[UNFOTONY]

The error will be raised by the last script that runs first. I tried to paste the code into it, but the error still remained. I tried to insert the code into the following script, but the error also remained.

It's strange that the former scripts work well after using the latter.