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Nesting a comp in a comp in a comp stops camera
Here’s a brainteaser that I have spent 2 days struggling with. Please excuse the length of this post!
I am creating a page-a-day calendar in 3D that peels off using the good old CC page turn. To cut a long story short I have had to nest comps within comps. Here is the order:
Comp 1 – JPEG of one page – say January 1st. No effects. I have to do this to make the page turn extend outside the stills boundary.
Comp 2 – Whole month of page turns – so 62 layers to give front and back with a drop shadow on each layer.
Comp 3 – All the months combined to make the whole calendar. The camera flies around this.Here is the problem. The monthly comps will not react to the camera and stay riggidly in position. Other comps (a 3D desk in this case) respond to the camera fine.
All the comps are collapsed and there are no additional effects on the comps in the final layer.
So is there a limit to the amount of comps you can nest inside each other for 3D? If there is and I have to go back a stage, can AE handle over 730 layers in one comp?! I am not sure I can anyway.
I am sure someone has tried this before, so any help is really, really welcome!
By the way I am using v7 pro but it is the same in V6.5 too.
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6 Replies
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Hey I just did what you said and it didnt react to the cam also but I went through my comps and made sure that the 3d toggle switch was on in every single precomp then it worked.
The Roach
http://www.projectrooster.com -
Thanks for your reply.
I checked that everything was set to 3D – it was. I have stripped back the final composition to its smallest components and I think I have discovered the problem – it’s the CC page turn.
For some reason it is corrupting the nested comp. Even if it is applied but switched off the 3D move does not show. The Page turn effect has to be removed for the camera move to be seen.
This is, of course, a disaster. I can make the move work by not collapsing the page turn layer, but then the pages that are being turned are cropped as they fly off.
Any ideas?
Scott
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OK. I should be fair about the poor old CC Page Turn. Further experimentation has shown that applying any effect to the second comp causes the 3D ability to fail.
There must be some rule here about what you can and can’t do. Can someone please point me in the right direction?
Thanks
Scott
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What is you animated the camera in the second comp then parent the third comps camera to the second and the movement will match up???
The Roach
http://www.projectrooster.com -
Thanks for this idea.
How do you parent from one comp to another – I thought you could only parent to another layer within the comp.
Also am I right in thinking that when you nest a comp into another it ignores any camera information from the original comp?
I think I have found a work around to my problem:
If I don’t collapse the final nested comp then it tracks the camera move OK and still produces the lighting shadows I need. The downside of this is that the page turn gets cut off beyond the original comps edges.
To get round this I reduced the size of the page in comp 2 so there was lots of space around it for the pages to fly off in to. I then quadrupled the resolution of this comp to keep the quality up when it goes back into the final 720×576 comp.
So far it is working fine with just two pages turning! I have the feeling I will lose depth when I add more.
I will post a link to the final version when it’s done.
Thanks for your help.
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Ok bring in you pre comp to the final composition, do not activated 3d on that pre comp. Now click on your second comp tab and drag it to the composition window so you will see two comps at the same time then select the camera from comp 3 hit alt right click on the position and
point of interest and whatever you need to attach like rotation. Drag the pick whip from the position of cam 3 to the position of cam2 in your second comp.I will leave pictures for you
http://www.projectrooster.com/cow
You can also write the expressions you see in the pics on your third comps camera.
I hope this helped
The Roach
http://www.projectrooster.com
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