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Louis Paldrup
how to let particles cast shadows with particular
on May 18, 2005 at 10:17:13 am



Can enyone please tell me if it is possible to let the particles produced with Particular cast shadows in the 3D environment in AE? And if it is possible how to do it.

Thank you in advance.
Regards,
Louis Paldrup


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Mylenium
Re: how to let particles cast shadows with particular
on May 18, 2005 at 1:58:15 pm

Particular does not calculate shadows as well as "real" 3D lighting (it's particles are more like 2.5 D). If it's a simple flat shadow, you can however duplicate your layer and distort it to give the illusion of shadows.

Mylenium

[Pour Myl


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Louis Paldrup
Re: how to let particles cast shadows with particular
on May 18, 2005 at 2:05:05 pm

Thank You. I will try the duplicate layer trick.

Best,
Louis


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John Davidson
Re: how to let particles cast shadows with particular
on May 18, 2005 at 7:41:19 pm

Image Lounge has a "Real drop shadows" plugin that would probably do the trick. You have to assign the depth and distance, but it's really simple (you just drag little arrows on the comp window until the shadow is the distance you want).

Hope that helps.


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Louis Paldrup
Re: how to let particles cast shadows with particular
on May 20, 2005 at 7:52:08 am

Thank you John, I will require the image lounge packet, and see how it works.

best, Louis


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Andy Engelkemier
Re: how to let particles cast shadows with particular
on Nov 23, 2016 at 7:58:15 pm

You can Sort of create your own shadows actually, but it's slightly complicated. This only works on a flat plane though, like a floor or wall.

Duplicate your composition, and delete everything except for your floor/wall layer and your particles.
Create a camera perpendicular to your plane, and back it away far enough to see all of your particles. It should be approxiately as far away as your light for best results.
Hide your plane.

Now bring in your composition into your original. The particles should now be fully 2d, instead of 2.5d. But you "rendered" them in 3D from the light's perspective. So switch the layer to 3D, and rotate it into the orientation of your plane. If it intersects objects, you'll have to then nest that, so it's a 2D layer. You'll probably want a black shadow, so add a fill effect, and change the color to black. Now add a little gaussian blur to match it's distance away a bit, and adjust the transparency a bit as well.

Oh, don't do that until you are Done with your particles. Every time you make an adjustment, you'd have to copy your layer, past into the shadow composition, then return. It works, but it's a pain.

With a little tweaking, this method will work in a lot of situations, and would fool Most people. At least, they likely wouldn't notice.
If you're light is really soft, and the particles move in 3D too much, it'll be pretty hard to match the amount of blur. There are some things you can do, but it's likely unnecessarily complicated. Like, you could create a duplicate of the particles as a depth map to apply as a lense blur to the final layer so you vary the softness of the shadow. But as the internet sensation says, "aint nobody got time fo dat." Your render time would also go through the roof.


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Aimee Murray
Re: how to let particles cast shadows with particular
on Apr 12, 2017 at 1:22:11 pm

There is a video copilot tutorial on this:
http://www.videocopilot.net/tutorials/particle_shadows/


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