For loop, selections
I have a script I'm making that will select predefined color ranges (in my script, these are red, blue, and green), applying each of these selections to a new layer as a mask. For the most part, I have succeeded in doing this, although there are some operational situations I would like to handle better in my programming.
These are:
- The checking to see if a selection has been made, aborting the for loop if there is no selection.
- The creation of a new layer to apply so that the mask can be applied to a separate layer, not writing over what has been done to the previous layer.
I left out my attempts to implement these, as they'd muck up the clarity of this post. It's hard to explain what was going wrong, but I it had to do with the scope of the for loop, resulting in masks to write over each other on the same layer, or for an empty selection to get applied as a mask (which is undesirable).
Currently my script runs ok.. If there are red green and blue colors (exact colors) present on the layer, they will be selected and applied to masks on separate layers. If only red is present, the script will select red, create the mask on a new layer, and then error. Anyone have any ideas on handling this more efficiently? Thanks
var doc = app.activeDocument;
var fuzz = 200;
var colorRange = {};
colorRange['0r'] = '255';
colorRange['0b'] = '0';
colorRange['0g'] = '0';
colorRange['1r'] = '0';
colorRange['1b'] = '255';
colorRange['1g'] = '0';
colorRange['2r'] = '0';
colorRange['2b'] = '0';
colorRange['2g'] = '255';
for (var i = 0; i < 3; i++) {
var layerRef = doc.artLayers.add();
//Selects color, determined from above array.
//When i=0 the color selected will be red.
//When i=1 the color selected will be blue.
//When i=2 the color selected will be green.
var selectColour = new SolidColor();
selectColour.rgb.red = colorRange[i + 'r'];
selectColour.rgb.green = colorRange[i + 'b'];
selectColour.rgb.blue = colorRange[i + 'g'];
var scaleA = (selectColour.lab.a + 128.5) / 256;
var desc11 = new ActionDescriptor();
desc11.putInteger(charIDToTypeID("Fzns"), fuzz);
var desc12 = new ActionDescriptor();
desc12.putDouble(charIDToTypeID("Lmnc"), selectColour.lab.l);
desc12.putDouble(charIDToTypeID("A "), selectColour.lab.a + scaleA);
desc12.putDouble(charIDToTypeID("B "), selectColour.lab.b + scaleA);
desc11.putObject(charIDToTypeID("Mnm "), charIDToTypeID("LbCl"), desc12);
desc11.putObject(charIDToTypeID("Mxm "), charIDToTypeID("LbCl"), desc12);
executeAction(charIDToTypeID("ClrR"), desc11, DialogModes.NO);
//Selection is applied as a mask on the new layer.
//If there is no selection, the script will error.
var desc140 = new ActionDescriptor();
desc140.putClass(charIDToTypeID('Nw '), charIDToTypeID('Chnl'));
var ref51 = new ActionReference();
ref51.putEnumerated(charIDToTypeID('Chnl'), charIDToTypeID('Chnl'), charIDToTypeID('Msk '));
desc140.putReference(charIDToTypeID('At '), ref51);
desc140.putEnumerated(charIDToTypeID('Usng'), charIDToTypeID('UsrM'), charIDToTypeID('RvlS'));
executeAction(charIDToTypeID('Mk '), desc140, DialogModes.NO);
}
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