• Adobe After Effects Expressions

  Light Sweep Effect Boundaries.

  Posted by Jace Bradley on January 17, 2023 at 10:10 pm

  Hi wonderful people.

  I am trying to create a script to animate the Center Property for the CC Light Sweep Effect so it will animate from left to right but based on layer boundaries. I tried to just add normal keyframes but that doesn’t work.

  this is the code :

  myButton2.onClick = function() {

  app.beginUndoGroup(“UNDO SWEEP”);

  var activeComp = app.project.activeItem;

  if (!(activeComp instanceof CompItem)) {

  alert(“Please select a layer in the active composition.”);

  return;

  }

  // Get the selected layers

  var selectedLayers = activeComp.selectedLayers;

  if (selectedLayers.length == 0) {

  alert(“Please select at least one layer.”);

  return;

  }

  for (var i = 0; i < selectedLayers.length; i++) {

  var currentLayer = selectedLayers[i];

  // Add the Light Sweep effect to the layer

  currentLayer.property(“Effects”).addProperty(“CC Light Sweep”);

  // Get the layer boundaries

  var left = currentLayer.sourceRectAtTime(0, false).left;

  var right = currentLayer.sourceRectAtTime(0, false).right;

  // Set the current time indicator as the starting point for the animation

  var currentTime = activeComp.time;

  // Get the “center” property of the effect

  var center = currentLayer.property(“Effects”).property(“CC Light Sweep”).property(“Center”);

  // Animate the “center” property from left to right over a duration of one second

  center.setValueAtTime(currentTime, [left, 0]);

  center.setValueAtTime(currentTime + 1, [right, 0]);

  center.setInterpolationTypeAtKey(1,KeyframeInterpolationType.BEZIER, KeyframeInterpolationType.BEZIER);

  }

  app.endUndoGroup();

  }

  // Show the UI panel

  myPanel.show();

  That is setting two keyframes but is not animating at all 🙁

  Thank you in Advance.

  Jace Bradley replied 3 years, 4 months ago 1 Member · 0 Replies
• 0 Replies

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