• Adobe After Effects

  add vertex point in future keyframes

  Posted by Alfred Steiner on July 16, 2015 at 1:47 pm

  Hello people,

  I am animating a path in the way that i am just adding vertex points in differnt keyframes.
  I described it in my last post here in the forum : https://forums.creativecow.net/thread/2/1063849#1063849

  now my question is , how can i add an vertex point in earlier keyframes so that all keyframes in the future also have the part of the path modified by this change ?

  in other words :

  how can i add an anchor point in multiple keyframes at once ?

  if it is still not easy to understand:
  This guy here asked something similar https://forums.creativecow.net/thread/2/933222

  kind regards,
  Alf

  Alfred Steiner replied 11 years ago 53,348 Members · 1 Reply
• 1 Reply

• 

  Alfred Steiner

  July 18, 2015 at 3:18 pm

  thanks for your answer but as i wrote in all my topics i am working with too many keyframes and vertices so it is impossible to do it manually.

  i wrote a script which works but is very slow
  if anyone knows how to improve Script performance let me know
  // G L O B A L S
var theComp = app.project.activeItem;
var theLayer = theComp.layer(1);
var thePath = theLayer.property("ADBE Root Vectors Group").property("ADBE Vector Group").property("ADBE Vectors Group").property("ADBE Vector Shape - Group").property("ADBE Vector Shape");
var currentTime = theComp.time; // Current Time in seconds
var activeKeyFrame = thePath.nearestKeyIndex(currentTime); // Number of the active Keyframe starting at 1 ----- > should be the nearest in the past
if (thePath.keyTime(activeKeyFrame) > currentTime) { activeKeyFrame--; }
var currentPath = thePath.keyValue(activeKeyFrame).vertices;
var prevPath = thePath.keyValue(activeKeyFrame-1).vertices;
var nextPath = thePath.keyValue(activeKeyFrame+1).vertices;

  if (theLayer.marker.numKeys == 0) { // save the last vertex index
  if ( Math.abs(currentTime - thePath.keyTime(activeKeyFrame)) > (app.project.activeItem.frameDuration*0.7) ) {
  var mv = new MarkerValue((currentPath.length-1)+"-1"); // Array index of last Vertex
  } else {
  var mv = new MarkerValue((currentPath.length-1)+"-0"); // Array index of last Vertex
  }
  theLayer.property("Marker").setValueAtTime(currentTime, mv);

  } else {
  var marker = theLayer.marker.keyValue(1).comment.split("-");
  //var marker_value = parseInt(theLayer.marker.keyValue(1).comment); // stores last Vertex array index of Current Path before editing
  var marker_value = parseInt(marker[0]); // stores last Vertex array index of Current Path before editing
  theLayer.marker.removeKey(1); // delete Marker

  if (marker[1] == "1") { // if new keyframe has been added
  alert("new");
  var insertPath = currentPath.slice((prevPath.length+1), currentPath.length);
  var insert_start = prevPath.length;
  var insert_length = 0;
  var getVerts;

  for (var i = (activeKeyFrame+1); i <= thePath.numKeys; i++) { // process all following Keyframes var myShape = new Shape(); // create new Shape to overwrite the original with myShape which is modified by the splice function myShape.closed = false; getVerts =thePath.keyValue(i).vertices; // get vertices Array of the Keyframe with the index i getVerts.splice.apply(getVerts, [insert_start,insert_length].concat(insertPath)); myShape.vertices = getVerts; thePath.setValueAtKey(i,myShape); // setValueAtKey(x, myShape); frame 0 => x = 1 --> es geht bei 1 los
  alert(insertPath);
  }
  } else { // if keyframe existed
  var insertPath = currentPath.slice(prevPath.length, currentPath.length);
  var insert_start = prevPath.length; // index before first new vertex in currentFrame
  var insert_length = (marker_value+1)-insert_start;
  var getVerts;

  for (var i = (activeKeyFrame+1); i <= thePath.numKeys; i++) { // process all following Keyframes // alert("path:"+insertPath+",start:"+insert_start+",length:"+insert_length); var myShape = new Shape(); // create new Shape to overwrite the original with myShape which is modified by the splice function myShape.closed = false; getVerts =thePath.keyValue(i).vertices; // get vertices Array of the Keyframe with the index i getVerts.splice.apply(getVerts, [insert_start,insert_length].concat(insertPath)); myShape.vertices = getVerts; thePath.setValueAtKey(i,myShape); // setValueAtKey(x, myShape); frame 0 => x = 1 --> es geht bei 1 los
  alert(insertPath);
  }

  }
}


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