export black and white animation MASK for AE

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export black and white animation MASK for AE

Postby 62935 on 08/22/2016, 10:46 pm

Hi! I have a C4D animation of an object, I must export into black and white mask for AE, I want to ask you please:

1) In order to make white and black: ¿I only have to apply white material into de object and how to make black all the background? and about lights in C4D what I must do...?

2) Ir order to export asd OBJ Sequence I have to use plexus plugin for C4D, or there is other way?

thanks a lot
62935
 
Posts: 108
Joined: 05/16/2015, 10:42 am
System Specs: Windows 8
Element 3D v.2, Trapcode v.2

Re: export black and white animation MASK for AE

Postby Guitarboy2828 on 08/22/2016, 11:47 pm

When you say you want it in black and white mask, what do you mean by that? Do you need an alpha layer for compositing? or you want a black and white scene? They are 2 different things.

Alpha Mask:
http://api.ning.com/files/-z9YjHyiWE0xJ8I4hsUqBmkbsKsbebJc4-2BFEgGEwSAAQvsaTJfyME*DzPh-v4AfL6wc4Bt4CeKhPXorGiD6Q__/StudioArtistScreenSnapz673.jpg

B/W 3d image: Image

Depending on what you're after, you'll approach it differently.

You mean export an OBJ sequence in c4d? No, you'd just save your file as an OBJ. Plexus is used for something completely different. Or do you want your file from c4d to be used BY plexus?
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Re: export black and white animation MASK for AE

Postby 62935 on 08/23/2016, 12:36 am

Hello GuitarBoy thank you for your reply.

I do a C4D flower animation, I want to import into AE in order to fill the petals of the flower with particles, I'm trying to following the steps that StarCircle give me in other thread, and I ask here in order to do step 1.
I really don't know if I need it only "alpha", because I need to preserve the "deep" (the 3D feeling of each petal), I copy-paste here the steps I must do, perhaps then you can say me which option you offer I must follow. THANK GUITARBOY:

star+circle wrote:The most workable approach that I can come up with is to use a layer emitter that is derived from the CD4 animation. It won't be a "real" 3D effect but it may look 3D since you have an animated 3D object as the base. Essentially you'd do it this way:

1) Render a black and white mask of the animation

2) Use another mask (path) or fractal noise matte or some such method to reveal the flower

3) Turn that into a white flower reveal on transparent background in a precomp using the B&W flower as a track matte

4) Use that precomp as a layer emitter for Particular: particles will only emit from the opaque areas of the layer. make particle life short enough so that the change in the base 3D animation will show through time

Many of the techniques are covered here:

https://vimeo.com/79823940


P.D.: is an "an alpha layer for compositing" what I need? It preserves de 3D feeling? I must export into OBJ Sequence in order to import the animation into AE E3D, right?
62935
 
Posts: 108
Joined: 05/16/2015, 10:42 am
System Specs: Windows 8
Element 3D v.2, Trapcode v.2

Re: export black and white animation MASK for AE

Postby Guitarboy2828 on 08/23/2016, 12:47 am

Unfortunately, I'm still unsure of what you're trying to do. If your animation is a 3d flow that is opening, and you want particles to emit from the pedals, I'm not sure why you need a mask? You could manually mask your particles in AE if you need to?

Wish I could be of more help. Maybe post the video you're trying to add particles to and I can have a look and help more. Or possibly someone else will have a better idea of what you're after.
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Re: export black and white animation MASK for AE

Postby 62935 on 08/23/2016, 1:19 am

GuitarBoy, thanks, I must post the C4D proyect file, or what do you mean? this is the C4D proyect:
https://www.dropbox.com/s/3kab5yjoyjgvkwa/To%20AE%20particle%20emitter.c4d?dl=0 trying to import this petal into AE and there, make the petal as "layer emitter" of the particles, for this purpose I need the 3D model be: "Render a black and white mask of the animation"

mm... perhaps this helps. trying to to like this 8video minute at 7:07) but with 3D white petals instead of white text
https://www.youtube.com/watch?v=V5DiHDfZPww
62935
 
Posts: 108
Joined: 05/16/2015, 10:42 am
System Specs: Windows 8
Element 3D v.2, Trapcode v.2

Re: export black and white animation MASK for AE

Postby Guitarboy2828 on 08/23/2016, 1:56 am

Ok, I have a better idea of what you're trying to do now. I'm still not 100% of the answer, I've not done what you're trying to do. Personally, it sounds like a project for x-particles within c4d. BUT, if that isn't going to happen. Instead of exporting a black and white alpha (which you can do within c4d, just google how to render with alpha layer). However, I'd just create a mask in AE, and manipulate it with a few keyframes and use that as the emitter.
Guitarboy2828
 
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Re: export black and white animation MASK for AE

Postby star+circle on 08/23/2016, 2:55 am

Here's the rough idea, with Element and Particular.

the magic rose.aep
Element and Particular rose, rough concept
(1.35 MiB) Downloaded 130 times


You'll get a different look if you parent the camera to the null. The particular layer sort of "smears" as it travels through 3D space.

Show shy layers to see what is going on.

One more thing of note is that if you have camera movement, the particular layer emitter layer needs to be parented to the camera in the same way as in a camera projection setup.
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Re: export black and white animation MASK for AE

Postby 62935 on 08/23/2016, 3:27 am

Image

THANK YOU STAR CIRCLE, you can not imagine what it means to me. Thanks
62935
 
Posts: 108
Joined: 05/16/2015, 10:42 am
System Specs: Windows 8
Element 3D v.2, Trapcode v.2

Re: export black and white animation MASK for AE

Postby 62935 on 08/23/2016, 3:27 am

Guitarboy2828 wrote:Ok, I have a better idea of what you're trying to do now. I'm still not 100% of the answer, I've not done what you're trying to do. Personally, it sounds like a project for x-particles within c4d. BUT, if that isn't going to happen. Instead of exporting a black and white alpha (which you can do within c4d, just google how to render with alpha layer). However, I'd just create a mask in AE, and manipulate it with a few keyframes and use that as the emitter.

Thanks GuitarBoy!
62935
 
Posts: 108
Joined: 05/16/2015, 10:42 am
System Specs: Windows 8
Element 3D v.2, Trapcode v.2


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