Forums > Jitter

simulating projection

November 9, 2008 | 11:16 pm

Hi,

Perhaps this is simpler than I think, but I generally use jitter more for matrices than opengl stuff.

I’m looking to simulate a projector, projecting a video on 3d shapes. Note that this is different from using a video as a texture. I’m wondering how realistic it can get, like factoring in focus, dissipating brightness with distance, projecting on different colors and surface qualities, and being able to animate the projector. Surely, there must be a tutorial on this somewhere. Can anyone point me in the right direction?

Thanks,
Zach


November 9, 2008 | 11:36 pm

Zach,

Why did you want to do this with Jitter? I am just interested because this
can be done very quickly in Blender(http://blender.org) or some other 3D
modeling program.

Do you need this to have a real-time component?

On Sun, Nov 9, 2008 at 6:16 PM, Zach Gold

wrote:

>
> Hi,
>
> Perhaps this is simpler than I think, but I generally use jitter more for
> matrices than opengl stuff.
>
> I’m looking to simulate a projector, projecting a video on 3d shapes. Note
> that this is different from using a video as a texture. I’m wondering how
> realistic it can get, like factoring in focus, dissipating brightness with
> distance, projecting on different colors and surface qualities, and being
> able to animate the projector. Surely, there must be a tutorial on this
> somewhere. Can anyone point me in the right direction?
>
> Thanks,
> Zach
>


"There is no such thing as an empty space or an empty time. There is always
something to see, something to hear. In fact, try as we may to make a
silence, we cannot." -John Cage


November 9, 2008 | 11:54 pm


November 10, 2008 | 8:34 pm

Thanks, that patch is really cool. I’ll probably spend quite a while playing with it. However, I was hoping there was just an object that could do this without having to use javascript and shaders. Guess not.

I may also try Blender, if I ever have the time. I was turned off to 3d software when I tried to teach myself Maya a couple years ago. I know you can simulate projection in Maya by attaching an image to a light, but didn’t think it was worth using such cumbersome software to achieve a simple effect, especially when it’s a pain rendering to video. I hear Blender’s a lot easier though.

-Zach


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