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Opacity change with multiple layer markers
I want to trigger multiple (two in this case) opacity changes via layer markers on a single layer.
I used below to trigger one opacity change.
if (marker.numKeys > 0 && time >= marker.key(1).time){
thisComp.layer(“N_Op_text”).transform.opacity.valueAtTime(time-(marker.key(1).time));
}
else{value}The expression looking at a null layer with opacity change. “N_Op_text” makes the opacity go from 100 to 50%.
If I want to manipulate this exp so it would be able to trigger another opacity animation (eg. it will look at a different null layer named “N_Op_out” that makes the layer go from whatever current value is to zero), how would I do that?THANKS
if (marker.numKeys > 0 && time >= marker.key(1).time){
thisComp.layer("N_Op_text").transform.opacity.valueAtTime(time-(marker.key(1).time));
}
else{value} -
1 Reply
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You could do it like this, if you need it to go to 0. If you need it to match the opacity of another layer, replace the “0” by pick-whipping the opacity of that other layer.
if (marker.numKeys > 1 ){
if (time >= marker.key(1).time){
thisComp.layer("N_Op_text").transform.opacity.valueAtTime(time-(marker.key(1).time));
if (marker.numKeys == 2 && time >= marker.key(2).time){0};
}else{value}
}else{value}(Will only work properly if you have two markers on the layer.)
Kalleheikki Kannisto
Senior Graphic Designer
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