Like this: C = thisComp.layer("Camera 1"); L = thisComp.layer("other layer"); v1 = L.toWorld(L.anchorPoint) - C.toWorld([0,0,0]); v2 = C.toWorldVec([0,0,1]); d = dot(v1,v2); s = 100 * C.cameraOption.zoom/d Dan ... View more

OK, going back to your original question, try this: alert("Layer: " + myLayerArray .name + " with Text: " + myLayerArray .property("Source Text").value.text); Dan ... View more

I guess I don't understand. I thought you were trying to get the original text, before it got changed by the script. Is that not the case? If it is, then you have to get the text itself (not the text layer) before you change it. Dan ... View more

That depends on what you're trying to do.If you wanted to limit a layer's apparent scale to 100%, you'd change the last line to something like this and apply it to the scale property: s = Math.min(100 * C.cameraOption.zoom/d,100); [s,s,s] Dan ... View more

I think you're going to have to harvest the text before you change it with setValue(). Dan ... View more

That's strange--I don't know how that happened. I'll try it again: C = thisComp.layer("Camera 1"); v1 = toWorld(anchorPoint) - C.toWorld([0,0,0]); v2 = C.toWorldVec([0,0,1]); d = dot(v1,v2); s = 100 * C.cameraOption.zoom/d Dan ... View more

It could get pretty complicated, especially if you have to consider that the layer might be angled to the camera such that one corner could be much closer than the others. If you only have to consider where the anchor point is in relation to the camera's focal plane, something like this should give you the apparent scale: C = thisComp.layer("Camera 1"); v1 = toWorld(anchorPoint) - C.toWorld([0,0,0]); v2 = C.toWorldVec([0,0,1]); d = dot(v1,v2); s = 100 * C./d Calculating whether any part of the layer is actually visible would add another layer of complexity. Dan ... View more

Yes, arrays, and yes on the 3D version. Dan ... View more

Here's a simple example that creates a null for each mask vertex. It assumes: The layer with the mask is the first layer in the active comp The number of mask vertices doesn't change The layer isn't parented, rotated, or 3D {     var myComp = app.project.activeItem;     var myLayer = myComp.layer(1);     var myPath = myLayer.property("Masks").property("Mask 1").property("Mask Path");     var numVerts = myPath.valueAtTime(myLayer.inPoint,false).vertices.length;     var myNulls = [];     var myNull;     var myVerts = [];     // create nulls     for (var i = 0; i < numVerts; i++){         myNull = myComp.layers.addNull(myComp.duration);         myNull.name = "Vertex " + (i+1);             myNulls = myNull;     }     var t = myLayer.inPoint;     var p;     while (t <= myLayer.outPoint){         myVerts = myPath.valueAtTime(t,false).vertices;         p = myLayer.property("Position").valueAtTime(t,false) -             myLayer.property("Anchor Point").valueAtTime(t,false);         for (var i = 0; i < numVerts; i++){             myNulls.property("Position").setValueAtTime(t,p + myVerts);         }         t += myComp.frameDuration;     } } It gets a bit more complicated if you're dealing with parenting, rotation and/or 3D. You may need to temporarily add a Point Control with a layer space transform expression to do the space conversion and harvest the result. Dan ... View more

I can't get it to fail--single selection, multiple selections, project bin active/inactive, etc. as long as a comp is selected. Dan ... View more

I didn't have any problem changing a 320x200 comp to 133x50 with this: { var selectedFootage = app.project.selection; function setCompositionSize( selectedFootage )     {         for( var i=0; i<selectedFootage.length; i++ )         {             if( (selectedFootage instanceof CompItem) )             {                 selectedFootage.width = 133;                 selectedFootage.height = 50;             }         }     } setCompositionSize(selectedFootage); } ... View more

Try this: s = parent.transform.scale/100; [value[0]/s[0],value[1]/s[1]] Dan ... View more

Using your example, it's going to look like this: var myPath = "c:/test.avi"; app.project.item(10).replace(File(myPath)); Dan ... View more

Instead of transform.position.velocity, try transform.position.velocityAtTime(time-.001) Dan ... View more

Off the top of my head, the only other thing I can think of that has changed that would cause old expressions to break in newer versions of AE is that at some point  (I forget which version) the hack to read a text file using #include stop working and now requires $.eval() instead. As far as I know, Marcus's book is the only one dedicated to expressions. I don't know if he's planning an update. Dan ... View more

For Windows, it appears that's all stored in the ["Win32 Video Preview Pref Section"]. The prefs don't have exactly the names you're using, but they might be these:     "RAM Previews" = 00     "Mirror on Desktop During Playbacks" = 00     "All Window Updates" = 00     "Including While Rendering Movies" = 00 There is other stuff in that section as well, and there may be dependencies. I'd suggest you examine that section of the preferences file, change the settings you're interested in (from within the application), check the prefs file again to see what's changed, etc. On windows the file is loacted at "C/Users/(you)/AppData/Roaming/Adobe/After Effects/10.0/Adobe After Effects 10.0-x64 Prefs.txt" Be careful and good luck! Dan ... View more

>I wonder if it's a technical thing rather than an oversight? I'm going with the first one.  🙂 It might just be a matter of priority. It wouldn't hurt to add your name to the list of folks that have asked for this: http://adobe.com/go/wish Dan ... View more

You can use expressions to tie one mask path to another, but there's no access to individual vertices. So you can't create the type of live link you're after. I'd say the scripting route is probably your best workaround. Dan ... View more

Try changing the second line to this: nullpos=n.toComp(n.anchorPoint); ... View more

Something like this: {   var myComp = app.project.activeItem;   var myLayer;   for (var i = 1; i <= myComp.numLayers; i++){     myLayer = myComp.layer(i);     if (myLayer.property("Marker").numKeys > 0)       myLayer.property("Opacity").setValue(0);   } } Dan ... View more

Only three frames? Then how about something like this: r = thisComp.layer("Face Center").transform.yRotation; if (r < 0 )   f = 0 else if (r > 0)   f = 2 else   f = 1; framesToTime(f) Dan ... View more

How many total frames do you have time remapped? I would leave the keyframed Time Remapping value out of the expression. Say you have 50 frames total. I'd do it like this: center = 25;  // center frame (center + thisComp.layer("Face Center").transform.yRotation)/-25; Dan ... View more

Try using the match name: ADBE HUE SATURATION Dan ... View more