• Adobe After Effects Expressions

  Changing Anchorpoint within a Script – Create Null and parent to selected layer.

  Posted by Sebastian Rasche on July 10, 2017 at 1:09 pm

  Hey there,

  so I found this script by Lloyd Alvarez on AeScripts called “Add Parented Null to Selected Layers”
  What the script basically does is creating a null and parent it to a selected layer.

  The only thing I would like to change is that the nulls Anchorpoint is centered, so basically having the Anchorpoints coordinates at [50,50].
  As I have no experience with scripting could anybody tell me how I would achieve that?

  Thanks in advance!

  var proj = app.project;
var undoStr = "Add Parented Null to Selected Layers";

  if (proj){
  var myComp = app.project.activeItem;
  if (myComp != null && (myComp instanceof CompItem)){
  app.beginUndoGroup(undoStr);

  var myLayers = myComp.selectedLayers;
  if (myLayers.length != 0) {
  var saveIn = myComp.duration;
  var saveOut = 0;
  var saveIndex = myComp.numLayers;
  var newInpoint=myComp.duration, newOutpoint=0, myIndex=myComp.numLayers;
  var newNull = myComp.layers.addNull(myComp.duration);
  //check to see if any of the selected layers is a 3d layer
  for (i=0; i <= myLayers.length-1; i++){
  if (myLayers[i].threeDLayer) {
  newNull.threeDLayer = true;
  break;
  }
  }

  for (i=0; i <= myLayers.length-1; i++){

  currentLayer = myLayers[i];
  saveIn = (currentLayer.stretch < 0) ? currentLayer.outPoint : currentLayer.inPoint;
  saveOut = (currentLayer.stretch < 0) ? currentLayer.inPoint : currentLayer.outPoint;
  saveIndex = currentLayer.index;

  if (saveIn < newInpoint) {newInpoint = saveIn}
  if (saveOut > newOutpoint) {newOutpoint = saveOut}
  if (saveIndex < myIndex) {myIndex = saveIndex}

  currentLayer.parent = newNull;
  }

  newNull.moveBefore(myComp.layer(myIndex));
  newNull.inPoint = newInpoint;
  newNull.outPoint = newOutpoint;

  app.endUndoGroup();
} else {
alert("Please select at least one layer");
}
} else {
alert("Please select an active comp to use this script");
}
}
else
{
alert("Please open a project first to use this script.");
}

  Sebastian Rasche replied 9 years ago 1 Member · 0 Replies
• 0 Replies

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