bart at max (also BITter)

Maybe i have mist an tutorial or help file.

Is it possible to have 2 cameras with different view in one 3D environment in Jitter?

And each view of each camera is visible on seperated jit.window, so 2 jit.window's with the same 3D environment.

Hi, all,
Maybe i have mist an tutorial or help file.
Is it possible to have 2 cameras with different view in one 3D environment in Jitter?

two-cameras-with-different-view-in-one-3d-environment-in-jitter

I assumed this would be possible by rendering the same scene to two render objects. But when I tried (see the patch below), it didn't work. Does someone know why this patch doesn't work? Funny is that when I disconnect the pink patch cord (between drawto and gridshape), suddenly it works.

Oh excuse me, this is on Max 4.5.7, Jitter 1.5.2, Mac OS 10.4.8

I made a few quick changes to your patch and now it seems to do what 

On 2-nov-2006, at 14:36, Mattijs Kneppers wrote:

> I assumed this would be possible by rendering the same scene to two 

> render objects. But when I tried (see the patch below), it didn't 

> work. Does someone know why this patch doesn't work? Funny is that 

> when I disconnect the pink patch cord (between drawto and 

matthijs,
I made a few quick changes to your patch and now it seems to do what  
you intended.
HtH
-jennek

>
> I assumed this would be possible by rendering the same scene to two  
> render objects. But when I tried (see the patch below), it didn't  
> work. Does someone know why this patch doesn't work? Funny is that  
> when I disconnect the pink patch cord (between drawto and  
> gridshape), suddenly it works.
 >8
> Cheers,
> Mattijs


Ah, I see. Thanks for the modifications Jennek. So it seems there is a problem with automatic 0 then? Trying to narrow this down, I'll make it two replies.

First: the way to do rendering of one scene on multiple windows would be like this:

..except for the fact that the perspective is not right.

Ah, I see. Thanks for the modifications Jennek. So it seems there is a problem with automatic 0 then? Trying to narrow this down, I'll make it two replies. 

..except for the fact that the perspective is not right.


Second.. drawto and automatic 0 don't work together for some reason. Steps to reproduce are in the patch.

I'm curios if anyone can explain this behaviour.

On 2-nov-2006, at 18:36, Mattijs Kneppers wrote:

> Ah, I see. Thanks for the modifications Jennek. So it seems there 

> is a problem with automatic 0 then? Trying to narrow this down, 

first modification was to make the 'drawto somerendercontext' remain 

in effect until the somerendercontext is banged.

this makes perfectly sense. when a render context draws, it calls 

drawto establishes that client relationship.

but it did not draw after that modification. changing automatic to 1 

> Ah, I see. Thanks for the modifications Jennek. So it seems there  
> is a problem with automatic 0 then? Trying to narrow this down,  
> I'll make it two replies.

that surprised me too.
first modification was to make the 'drawto somerendercontext' remain  
in effect until the somerendercontext is banged.
this makes perfectly sense. when a render context draws, it calls  
draw_clients.
drawto establishes that client relationship.

but it did not draw after that modification. changing automatic to 1  
was a lucky guess.
I cannot explain.

Not a directly Jitter related question but...... I'm learning jitter 

and I want to use multiple dv camera (say 4) which I gather isnt 

possible. Does anyone know of a composite to firewire converter (for 

a mac) so I could plug my cameras into my mixer (edirol v4) then 

output that to my laptop. I've got a pc with composite video in but I 

Not a directly Jitter related question but...... I'm learning jitter  
and I want to use multiple dv camera (say 4) which I gather isnt  
possible. Does anyone know of a composite to firewire converter (for  
a mac) so I could plug my cameras into my mixer (edirol v4) then  
output that to my laptop. I've got a pc with composite video in but I  
really want to run this from my laptop.

Just wanted to say that (other than the last unrelated question) this question + answers were very helpful.

Helped me to figure exactly how to get two cameras in one Jitter 3D environment with different views, lighting, etc.

Just wanted to say that (other than the last unrelated question) this question + answers were very helpful.
Helped me to figure exactly how to get two cameras in one Jitter 3D environment with different views, lighting, etc.
Thank you.


the methods presented in this thread are 10 years old and therefore outdated. here is the modern way to do this. simply enable @shared on both window contexts, enable capture on the secondary gl.camera view, and send that texture to the second window for display:

https://cycling74.com/forums/mapping-multiple-videos-to-multiple-projectors

ive made some further changes to that patch, but still somehow the perspective doesnt work - both windows apparently output exactly the same perspective - which means that when i want to point poth projections on one spot to create a 3D projection at their intersection, they simply overlap and cross each other instead of building a coherent shape... do you know what i mean?

would be extremely happy about a hint - prob something extremely obvious again from your perspective :)

hi rob,
after ur response on my post here
https://cycling74.com/forums/mapping-multiple-videos-to-multiple-projectors
ive made some further changes to that patch, but still somehow the perspective doesnt work - both windows apparently output exactly the same perspective - which means that when i want to point poth projections on one spot to create a 3D projection at their intersection, they simply overlap and cross each other instead of building a coherent shape... do you know what i mean?
would be extremely happy about a hint - prob something extremely obvious again from your perspective :)


i played around with tut32 cam view, as well as the attributes of the cam & render objects - but w/o success... in the tut patcher it works fine, but somehow not in my patch... someone any idea?

@Rob Ramirez may i have a question that is it better to use 2 [jit.window] or 2 [jit.world] to out put them ?

屏幕快照 2018-08-21 下午12.41.43.png

屏幕快照 2018-08-21 下午12.41.52.png


@Rob Ramirez  may i have a question that is it better to use 2 [jit.window]  or 2 [jit.world] to out put them ?

Two cameras with different view in one 3D environment in Jitter