Creating ITunes Cover Flow

[Mylenium]

Nope, absolutely no conditional stuff required. You only measure the distance between places and then use this to drive rotation. Example:

range=100; //range when rotation begins
center=thisComp.width*0.5; //center of comp on X axis
distance=position[0]-center;

angle=linear(center+distance;center+range,center-range,90,-90);

[angle]

Mylenium

[Andrew Kramer]

I’m working on something like this right now. This helps.

[Alex Dinnin]

Cheers Mylene..

I’m trying to do this and three other jobs.. but that works great.

i.e. just in case people didn’t spot it..

angle=linear(center+distance;center+range,center-range,90,-90);

the semi collon needs to be a comma

[Alex Dinnin]

ok..That works like a charm.. I have appied it to the y rotation.. tweaked it a little bit to suit my needs.. and its great..

however I now want to add that expression to position and scale.. except I can’t work out how to get it to ignore aspects..

for example.. I wanna now move it forward it Z, when it gets to the centre of the comp.. however I can’t work out how to get it to ignore x & y. And no matter what my feeble brain works out.. its always says.. needs to be in dimensions of 3 not 1 !!!

any ideas ??

Alex

[Dankelly]

This should help!

range=200; //range when Z begins
center=thisComp.width*0.5; //center of comp on X axis
distance=position[0]-center;
Zdist=400;

if (value[0] <= center ){ Zpos=linear(center+distance,center-range,center,value[2],value[2]-Zdist); }else{ Zpos=linear(center+distance,center,center+range,value[2]-Zdist,value[2]); } value+[0,0,Zpos] -DanKelly

[Alex Dinnin]

ok that works like a charm.. however I had the x axis controlled by a slider on a seperate layer.

so i tried to tweak it…

range=200; //range when Z begins
center=thisComp.width*0.5; //center of comp on X axis
distance=position[0]-center;
Zdist=400;
x=thisComp.layer(“Null 1”).effect(“Scale”)(“Slider”) ;

if (value[0] <= center ){ Zpos=linear(center+distance,center-range,center,value[2],value[2]-Zdist); }else{ Zpos=linear(center+distance,center,center+range,value[2]-Zdist,value[2]); } value+[x,0,Zpos] but this has now just stopped the translation iz Z ???? I'm positive I have put the x in the wrong place..

[Dankelly]

try this::

x=thisComp.layer(“Null 1”).effect(“Scale”)(“Slider”);
range=200; //range when Z begins
center=thisComp.width*0.5; //center of comp on X axis
distance=x-center;
Zdist=400;

if (x <= center ){ Zpos=linear(center+distance,center-range,center,value[2],value[2]-Zdist); }else{ Zpos=linear(center+distance,center,center+range,value[2]-Zdist,value[2]); } [x,value[1],Zpos]

[Alex Dinnin]

Just a quick thankyou to Mylenium and DanKelly for helping me out on this..

I have uploaded the scene, should anyone be interested or want to use it.

https://www.adinnin.com/clients/ItunesBrowser/itunes_browser.aep

I hope that link works.

Alex

[Steadifish]

I’m completely uncomfortable with Java and Expressions, but would really like to know a line of script to get each “album cover” to freeze when centered in the frame. Ideally freeze-zoom forward 10%-then go back to the motion path. Expressions geniususes please help.

David Fisher
Planet Productions

[Dan Lacloche]

I only have AE 6.5 so I can’t open your .aep file. Where do I place the code? What layers do I set up?