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Page roll problem

7 REPLIES 7
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Message 1 of 8
richanderson
560 Views, 7 Replies

Page roll problem

I have two animated flags that I would like to roll down from the top of the screen (see attached pic). I've tried the matchbox shader for 3d page turns but that doesn't include the alpha for the flags. I've also tried bending the flags with a bicubic surface but I can't seem the get the back side of the roll to look right. Any suggestions for a workflow?

 

Thanks!

Rich

7 REPLIES 7
Message 2 of 8
BKM
Advisor
in reply to: richanderson

BiCubic is your best way, but painful. the 1980's page turn has never been easy on Smoke.


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Message 3 of 8
Grant.Kay
in reply to: richanderson

One way of doing it using CFX is to do two separate 3d page matchbox shaders and than recombine it with a comp node.

So you do the page turn with the fill. Copy the match box shader and connect the mattes. You can than recoup the fill and matte results over the background.

Does that help?

Regards
Grant

Grant Kay
Principal Learning Content Developer

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Message 4 of 8
BKM
Advisor
in reply to: Grant.Kay

Grant, Looking at the Page Turn Matchbox, I couldn't see how to turn off the back. Without this, your seperate matte and fill combo passes and recomp can't be done. The 3D Page Turn always has this awakward "back" page that gets in the way.



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Message 5 of 8
richanderson
in reply to: BKM

Yeah, Brian you posted it before I could. I was looking at that method yesterday but couldn't see how to turn off that back side or at least make the back match the front. 

Message 6 of 8
BKM
Advisor
in reply to: richanderson

At least you know I was giving your issue a proper looking into to. Ducks in a row and all that. 🙂

 


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Message 7 of 8
richanderson
in reply to: BKM

Sure. That's the great thing about this forum. I know a page turn isn't used very much, but given Smoke's 3d capabilites it should be easier to do. I don't have too much time to mess around with the bicubics so I might do the roll down effect in AE then bring that element into Smoke and add the displacement.

 

Thanks!

Message 8 of 8
truss7
in reply to: richanderson

I've had success taking an oversized frame into action and bending it in half using extended bicubics. Then move the front source and matte source throught that bicubic bent shape and invert that move in the layer axis so you get a static image that page turns! It's still quite tricky though...

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