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Mask Index linked to Layer index
Can anyone help me.. I am digging myself into a hole trying to solve a problem that might not even exist.
I have a a psd layer with with lots of individual elements, some of which I would like to isolate and animate on different layers in 3d space.
Rather than cut out each layer in photoshop and import a layered file I have been trying to take a short cut (which obviously has become a long cut .. but hey is the journey not the destination) and do it in after effects.My rational is to draw a mask around each element that i wish to isolate on one layer.
I then want to add an expression that says
if the index number of this mask equals the index number of this layer then set the mask opacity to 100% else 0%this should then allow me to draw masks on one layer then simply duplicate the layer (potentially 50+ times) and each layer will only have one transparent (on) mask and display only one element.
i have been trying to use: thisProperty.propertyGroup(1).propertyIndex
but i dont really know what i am doing or even if its a particularly efficient work flow. but any help will be greatly appreciated.
Cheers
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13 Replies
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Hello,
You have to select all the layers where you want to apply this script :app.beginUndoGroup(“Set opacity mask”);
for(var j=0;j
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Unknown issue of copy/paste here, type this :
app.beginUndoGroup(“Set opacity mask”);
for(var j=0;j
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Oh i try this
app.beginUndoGroup("Set opacity mask");for(var j=0;j<app.project.activeItem.selectedLayers.length;j++){
var myLayer = app.project.activeItem.selectedLayers[j];
var myPath = myLayer.property("Masks");
var numMasks = myPath.numProperties;
for(var i=1;i<numMasks+1;i++){
if(myPath.property(i).name.replace(/Mask /g, "")==myLayer.index) myPath.property(i).maskOpacity.setValue(100);
else myPath.property(i).maskOpacity.setValue(0);
}
}app.endUndoGroup();
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thanks..
thats way more complicated than I imagined !
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worked a treat .
thanks..
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now i am in really uncharted waters here but could a script be used to delete masks instead of turning the opacity to zero ?
this would be an ideal work flow but it never crossed my mind as I was approaching it from an expression point of view …
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Here it is
app.beginUndoGroup("Delete mask");for(var j=0;j<app.project.activeItem.selectedLayers.length;j++){
var myLayer = app.project.activeItem.selectedLayers[j];
var myPath = myLayer.property("Masks");
var numMasks = myPath.numProperties;
for(var i=1;i<numMasks+1;i++){
if(myPath.property(i).name.replace(/Mask /g, "")==myLayer.index){
myPath.property(i).remove();
numMasks = numMasks-1;
}
else myPath.property(i).maskOpacity.setValue(0);
}
}app.endUndoGroup();
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thanks thats brilliant..
except it works the wrong way around. It keeps the ones I want to delete and deletes the one I want to keep…
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app.beginUndoGroup("Delete mask");for(var j=0;j<app.project.activeItem.selectedLayers.length;j++){
var myLayer = app.project.activeItem.selectedLayers[j];
var myPath = myLayer.property("Masks");
var numMasks = myPath.numProperties;
for(var i=1;i<numMasks+1;i++){
if(myPath.property(i).name.replace(/Mask /g, "")==myLayer.index){
myPath.property(i).maskOpacity.setValue(0);
}
else{
myPath.property(i).remove();
numMasks = numMasks-1;
}
}
}app.endUndoGroup();
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appreciate your efforts here but that’s still not doing it.
each layer have 50 identical masks . Turning off the opacity of the 49 i didnt want to see worked fine but deleting them hasnt worked.
this time it deleted mask 2 on layer 1 and left the rest . On the other layers all the masks see the same as before..
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