Particle Emitter Limits

A3DLover

Well i used the search function but it was pretty broad across the entire forum in sections un related to carrara.

Heres my question:
Can a particle emitter emulate the effect of a animated holographic projection?
I know a particle emmiter can do this
http://www.youtube.com/watch?v=gIIwW3N1Ib4

But can it project a glowing animation into a room or space in carrara?

wetcircuit

I think I understand what kind of effect you are after... I have a few answers for you.

PARTICLES
PyCLOID is a particle plugin (beta) which can attract particles onto another model. Take a look at the video on this link:
http://www.f1oat.org/pycloid/page11.html

VOLUMETRICS
PRIMIVOL is a volumetric plugin that creates fire, smoke, plasma, clouds,etc... and can copy the geometry of another model in the scene
http://www.inagoni.com/e107_plugins/content/content.php?content.4

GHOST/Post FX
Probably the BEST way to do it would be to render the subject separately and then composite it into your scene (either as an active billboard layer in your 3D scene, or in post-compositing like Photoshop or AfterEffects. You could apply any sort of "digital interference static" filter you like so sell the idea of a hologram.

RoguePilot

Hi, I just had a play with the particle emitter to get the effect you may want.

https://www.youtube.com/watch?v=FSHlEXMA27k

Not bad for a little bit of messing around. I can see that with time you could come up with something pretty good.

The trick here is to set a very short lifetime, zero or slow speed, very small particles, zero gravity and generate a lot of particles per second. Remember to up the limit on the particle quantity, they won't last long anyway so won't be too much of a tax on resources.
A glow shader on the particle helps and would probably look better with a transmap and age falloff.

The emitter has to be from the object 'Model', not the figure.

Playing around with all of that can produce some cool motion blur effects and I can see the possibility a variable transparency shader on the figure to give more solid outline to the 'hologram'.

Like Holly said, this could be rendered out with an alpha channel and composited onto a background video

If you really want to do this entirely in Carrara then a light bulb inside the figure (excluded from the light) with a very short range and high fall-off will cast the right kind of light.

wetcircuit

RoguePilot said:

Hi, I just had a play with the particle emitter to get the effect you may want.

https://www.youtube.com/watch?v=FSHlEXMA27k

Not bad for a little bit of messing around. I can see that with time you could come up with something pretty good.

Ahh, that is pretty cool! I didn't think of simply using the model as a surface emitter.... Very sparkly!

A3DLover

RoguePilot said:

Hi, I just had a play with the particle emitter to get the effect you may want.

https://www.youtube.com/watch?v=FSHlEXMA27k

Not bad for a little bit of messing around. I can see that with time you could come up with something pretty good.

The trick here is to set a very short lifetime, zero or slow speed, very small particles, zero gravity and generate a lot of particles per second. Remember to up the limit on the particle quantity, they won't last long anyway so won't be too much of a tax on resources.
A glow shader on the particle helps and would probably look better with a transmap and age falloff.

The emitter has to be from the object 'Model', not the figure.

Playing around with all of that can produce some cool motion blur effects and I can see the possibility a variable transparency shader on the figure to give more solid outline to the 'hologram'.

Like Holly said, this could be rendered out with an alpha channel and composited onto a background video

If you really want to do this entirely in Carrara then a light bulb inside the figure (excluded from the light) with a very short range and high fall-off will cast the right kind of light.

Wow that is pretty cool emitter work :D

This was vaguely what i had in mind (my video) but yours surpass my idea by lightyears.

This was done with spheres and a transparent alpha channel
http://www.youtube.com/watch?feature=player_detailpage&v=ta-TSnb8FBY

Thanks @Hollywetcircuit