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Moving in 3D space and Light transmission (trapcode shine)

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Brent GriffinMoving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 9:18:19 am

Hi,

I've set up a 3D space underwater where light is shining through a shimmering water surface that I followed off a tutorial. It looks great, but when it comes to panning a camera around in it, only the surface moves, not the light. I'm not sure if this will illustrate, but i've zoomed the camera in and the light streaming through stays static, where i'd want it to react accordingly;




It doesn't matter if I rotate the camera, the light source stays coming from the top.

I'm sure it's something basic i'm missing, but its the first time i've worked with a 3D light source, so any tips would be appreciated!

Thanks!


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David JohnsonRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 11:50:55 am

Is the layer that the Shine effect is on a 3D layer and, therefore, able to be affected by camera movement?


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Michael SzalapskiRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 1:48:17 pm

I wouldn't put Shine on a 3d layer, I'd put a 3d null in there and use an expression to attach the source point to the percieved position of the null.

thisComp.layer("SHINE NULL").toComp([0,0,0]);
where SHINE NULL is the name of the 3d null you've created.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Michael SzalapskiRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 1:49:26 pm

Well, what I said doesn't necessarily apply, it depends on your situation. You may want to do what I suggested, you may want to make it a 3d layer and move through it...it all depends on what you're doing in your comp.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Brent GriffinRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 2:02:31 pm

Thanks for the replies, the shine layer is 3D, but still doesn't react to camera movements.

What I want to acheive in the comp is to put some ground in, put people in there and be able to do camera moves around the people with the light reacting to the camera movements.

I'm trying to add that expression to the shine layer to the null, but i'm completely inexperienced with expressions, having only started to dabble. To what parameter would I assign that expression?

Thanks!


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Michael SzalapskiRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 14, 2010 at 8:53:35 pm

That expression was in case your shine layer was 2d and it was to be applied to the Shine source point.
How are you creating your Shine? Is it an adjustment layer? I wouldn't do one of those 3d, THAT's when I would use the expression trick.

If your layer is 3d and not an adjustment layer, it should be reacting to the camera movements. Although, to be honest, that shouldn't matter.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Brent GriffinRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 15, 2010 at 12:27:45 am

I've got Shine affecting a comp with a fractal with a track matte to simulate water surface, and shine shining through that.

Not sure if this will help, but I have the 'collapse transformations / continually rasterise' sun icon on in the comp, too otherwise the sun doesn't show as shining through the water.

Thanks


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Brent GriffinRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 15, 2010 at 12:57:13 am

Ok, it seems I answered my own question to an extent...

I turned off the 'rasterize' button and moved down the position of the 'shine' comp and now it seems to be reacting to the camera, but I now have the problem of having a light layer reacting in 2D in a 3D space...

So this at least shows me I need to research what the rasterise button ACTUALLY does, but maybe shine just doesn't do what I was hoping, which is light a 3D scene in a 3D way.


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Michael SzalapskiRe: Moving in 3D space and Light transmission (trapcode shine)
by on Sep 15, 2010 at 1:07:37 pm

Render order and collapsing transformations
Continuously rasterize a layer containing vector graphics

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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