How to maintain consistent free transformation after replacing the content?

Question

Due to the varying resolution and size of each image, after using the code below, some images may appear very large or very small, and even the coordinates and free transformation may differ.How can I maintain the consistent width, height, and free transformation of the image after replacing its content? Thank you again.#target photoshop

var theFiles = File.openDialog("Please select a file", "*.psd;*.tif;*.jpg", false);

// Replace Smart Object contents
var idplacedLayerReplaceContents = stringIDToTypeID("placedLayerReplaceContents");
var desc3 = new ActionDescriptor();
var idnull = charIDToTypeID("null");
desc3.putPath(idnull, new File(theFiles)); // Pass the new file path to the action
var idPgNm = charIDToTypeID("PgNm");
desc3.putInteger(idPgNm, 1);
executeAction(idplacedLayerReplaceContents, desc3, DialogModes.NO);

Stephen Marsh · Accepted Answer

@c.pfaffenbichler - great job as always, I was hoping that you would join the discussion as I was pretty sure that you'd be all over this!

@c.pfaffenbichler wrote:

A check to verify the active layer is a Smart Object might be a useful addition.

My meagre contribition, DOM code:

// Terminate the script if the active layer isn't a smart object
if (app.activeDocument.activeLayer.kind !== LayerKind.SMARTOBJECT) {
    //alert("The active layer isn't a smart object!");
    exit();
}

AM code:

// Terminate the script if the active layer isn't a smart object
s2t = stringIDToTypeID;
(r = new ActionReference()).putProperty(s2t('property'), p = s2t('layerKind'));
r.putEnumerated(s2t('layer'), s2t('ordinal'), s2t('targetEnum'));
var layerKind = executeActionGet(r).getInteger(p);
if (layerKind !== 5) {
    //alert("The active layer isn't a smart object!");
    exit();
}

c.pfaffenbichler · Answer

A check to verify the active layer is a Smart Object might be a useful addition.

// replace contens of smart object and recreate previous perspectival transformation;
// based on code by michael l hale and r-bin;
// 2025, use it at your own risk;
if (app.documents.length > 0) {
var originalRulerUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
////////////////////////////////////
var myDocument = app.activeDocument;
var theFiles = File.openDialog("Please select a file", "*.psd;*.tif;*.jpg", true);
for (var m = 0; m < theFiles.length; m++) {
// get info;
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID("Lyr "), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var layerDesc = executeActionGet(ref);
var soDesc = layerDesc.getObjectValue(stringIDToTypeID('smartObject'));
var soMoreDesc = layerDesc.getObjectValue(stringIDToTypeID('smartObjectMore'));
var size = soMoreDesc.getObjectValue(stringIDToTypeID('size'));
var oldWidth = size.getUnitDoubleValue(stringIDToTypeID('width'));
var oldHeight = size.getUnitDoubleValue(stringIDToTypeID('height'));
var transform = soMoreDesc.getList(stringIDToTypeID("transform"));
var nonAffineTransform = soMoreDesc.getList(stringIDToTypeID("nonAffineTransform"));
var yy = new Array;
for (var n = 0; n < nonAffineTransform.count; n++) {
yy.push(nonAffineTransform.getDouble(n))
};
////////////////////////////////////
var newFile = theFiles[m];
replaceContents (newFile);
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID("Lyr "), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var layerDesc = executeActionGet(ref);
var soDesc = layerDesc.getObjectValue(stringIDToTypeID('smartObject'));
var soMoreDesc = layerDesc.getObjectValue(stringIDToTypeID('smartObjectMore'));
var size = soMoreDesc.getObjectValue(stringIDToTypeID('size'));
var newWidth = size.getUnitDoubleValue(stringIDToTypeID('width'));
var newHeight = size.getUnitDoubleValue(stringIDToTypeID('height'));
var transform = soMoreDesc.getList(stringIDToTypeID("transform"));
var nonAffineTransform = soMoreDesc.getList(stringIDToTypeID("nonAffineTransform"));
var yyNew = new Array;
for (var n = 0; n < nonAffineTransform.count; n++) {
yyNew.push(nonAffineTransform.getDouble(n))
};
// reset transformation;
executeAction( stringIDToTypeID( "placedLayerResetTransforms" ), undefined, DialogModes.NO );
// transform;
var p0 = myDocument.activeLayer.bounds;
var p1 = [[Number (yy[0]), Number (yy[1])], [Number (yy[2]), Number (yy[3])], [Number (yy[4]), Number (yy[5])], [Number (yy[6]), Number (yy[7])]];
non_affine_transform(p0, p1);
////////////////////////////////////
app.preferences.rulerUnits = originalRulerUnits;
}
};
////////////////////////////////////
////// replace SmartObject contents //////
function replaceContents (newFile) {
var desc3 = new ActionDescriptor();
desc3.putPath(charIDToTypeID("null"), new File(newFile));
desc3.putInteger(charIDToTypeID("PgNm"), 1);
executeAction(stringIDToTypeID("placedLayerReplaceContents"), desc3, DialogModes.NO);
};
////// free transform by r-bin //////
function non_affine_transform(p0, p1) 
{  
try {
var d = new ActionDescriptor();
var r = new ActionReference();
r.putEnumerated(stringIDToTypeID("layer"), stringIDToTypeID("ordinal"), stringIDToTypeID("targetEnum"));
d.putReference(stringIDToTypeID("null"), r);

var l = new ActionList();
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p0[0]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p0[1]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p0[2]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p0[3]);
d.putList(stringIDToTypeID("rectangle"), l );

var l = new ActionList();
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[0][0]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[0][1]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[1][0]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[1][1]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[2][0]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[2][1]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[3][0]);
l.putUnitDouble(stringIDToTypeID("pixelsUnit"), p1[3][1]);
d.putList(stringIDToTypeID("quadrilateral"), l);

d.putEnumerated(stringIDToTypeID("interpolation"), stringIDToTypeID("interpolationType"), stringIDToTypeID("bicubic"));

executeAction(stringIDToTypeID("transform"), d, DialogModes.NO); 

return true;
}
catch (e) { alert(e); return false; }
};

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