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Forum: Vizard 07-08-2009, 11:16 AM
Replies: 12
Views: 11,607
Posted By michaelrepucci
Sorry, I don't think I read your question, or my...

Sorry, I don't think I read your question, or my previous posts very carefully. I do remember this strange effect, and I'm not sure I ever solved it, though I suspect I did given that I didn't ask...
Forum: Vizard 07-04-2009, 02:26 PM
Replies: 12
Views: 11,607
Posted By michaelrepucci
There is a default head-lamp that you can shut...

There is a default head-lamp that you can shut off if you don't want. See the documentation for "head-lamp" under "light basics". Otherwise, from my understanding, the light calculations follow the...
Forum: Vizard 01-26-2009, 08:42 AM
Replies: 4
Views: 7,341
Posted By michaelrepucci
Problem solved. Truly sorry for the trouble. ...

Problem solved. Truly sorry for the trouble.

Turns out that Vizard couldn't render at the full 120 Hz (hitting only 60 Hz instead), because of a bandwidth problem that I'd forgotten had arisen in...
Forum: Vizard 01-21-2009, 11:22 AM
Replies: 4
Views: 7,341
Posted By michaelrepucci
Active stereo is enabled via quad-buffering, by...

Active stereo is enabled via quad-buffering, by setting the configuration option in the vizcore.cfg file. (We're using an NVidia Quadro FX 3700.) The refresh rate and Vizard frame rate are both 120...
Forum: Vizard 01-16-2009, 10:47 AM
Replies: 4
Views: 7,341
Posted By michaelrepucci
stereo rendering problem/bug

We would like to use frame sequential (active) stereo with shutter goggles to study the perception of depth. (Currently, we are using red/green anaglyphs.) Unfortunately, there seems to be a bug in...
Forum: Vizard 12-30-2008, 08:40 AM
Replies: 7
Views: 11,203
Posted By michaelrepucci
Can anyone explain why my classes don't work...

Can anyone explain why my classes don't work correctly for setting color? I'm a bit boggled, and looking over the vizshape module didn't really clarify anything for me.
Forum: Vizard 12-17-2008, 01:34 PM
Replies: 6
Views: 8,878
Posted By michaelrepucci
Interesting. I'll play with that and let you know...

Interesting. I'll play with that and let you know if I have any problems. Thank you!
Forum: Vizard 12-17-2008, 01:30 PM
Replies: 6
Views: 7,943
Posted By michaelrepucci
Oh, an elegantly simple solution indeed. I'm...

Oh, an elegantly simple solution indeed.

I'm not sure what I could do with a post-process shader, but if I could change the background color without effecting the color of the anaglyphic objects...
Forum: Vizard 12-17-2008, 12:31 PM
Replies: 6
Views: 8,878
Posted By michaelrepucci
Are you saying I can make on-the-fly textures?...

Are you saying I can make on-the-fly textures? That might work. Currently, I generate one 2D checkerboard as a collection of on-the-fly squares, then turn on or off the visibility of the appropriate...
Forum: Vizard 12-17-2008, 11:55 AM
Replies: 6
Views: 8,878
Posted By michaelrepucci
I suspected that. Unfortunately there isn't just...

I suspected that. Unfortunately there isn't just one checkerboard, there are hundreds of versions, depending on which squares are visible, so that won't be so convenient. (FYI, we're recreating a...
Forum: Vizard 12-17-2008, 11:41 AM
Replies: 6
Views: 7,943
Posted By michaelrepucci
Well, that's not really true. The ghosting is...

Well, that's not really true. The ghosting is related to the filtering properties of the glasses, so those glasses with a better bandpass filter and good cut-offs would be better. We even notice a...
Forum: Vizard 12-17-2008, 07:22 AM
Replies: 6
Views: 7,943
Posted By michaelrepucci
Do you guys have a particular manufacturer, make,...

Do you guys have a particular manufacturer, make, and model of red/cyan glasses that you could recommend for use with Vizard? We're having lots of problems reducing ghosting to acceptable levels.
Forum: Vizard 12-09-2008, 12:33 PM
Replies: 6
Views: 8,878
Posted By michaelrepucci
need some help with projection (maybe via module projector.py)

Hi Vizards, there doesn't seem to be much help on the projector.py module, just a few examples. This would be enough if I were trying something typical, but, as usual, I'm not. I'm not even sure that...
Forum: Vizard 12-09-2008, 12:01 PM
Replies: 6
Views: 7,943
Posted By michaelrepucci
are anaglyphs red/green or red/cyan?

I would like to buy the most appropriate glasses for the job. The documentation says you should use red/green glasses when using viz.ANAGLYPHIC. But if I display a white object, its two images appear...
Forum: Vizard 12-09-2008, 11:53 AM
Replies: 7
Views: 11,203
Posted By michaelrepucci
Interesting ... I wish I'd known about vizshape,...

Interesting ... I wish I'd known about vizshape, because I've basically recreated much of its functionality, and in an apparently inferior way. I can't seem to find any documentation on vizshape, and...
Forum: Vizard 12-09-2008, 10:15 AM
Replies: 7
Views: 11,203
Posted By michaelrepucci
No, actually, that was how I first tried it. It...

No, actually, that was how I first tried it. It doesn't work either way.
Forum: Vizard 12-08-2008, 04:39 PM
Replies: 7
Views: 11,203
Posted By michaelrepucci
Still having the same trouble, though I have...

Still having the same trouble, though I have found that some node properties do get passed onto children. For example, setting <node3d>.lineWidth or <node3d>.pointSize works as I would like. Any...
Forum: Vizard 12-03-2008, 10:40 AM
Replies: 7
Views: 11,203
Posted By michaelrepucci
trouble changing subnode (child node) color, alpha, etc.

I'm having trouble setting various properties (e.g., color, alpha, ambient) for on-the-fly objects when they are the children (or subnodes) of other objects. For example


square = makeOTFSquare()...
Forum: Vizard 11-25-2008, 03:22 PM
Replies: 3
Views: 6,727
Posted By michaelrepucci
Okay. Interesting. I was able to get a...

Okay. Interesting. I was able to get a stripped-down example working, though my approach was slightly different than yours. So for the forum record I will post it here, then I just have a few...
Forum: Vizard 11-24-2008, 08:19 AM
Replies: 3
Views: 6,727
Posted By michaelrepucci
record and playback head-tracked data

Hi Vizards, I'm a little stuck on a project I've been trying to implement. I have a Power Wall setup with head-tracking in which I'd like to record the head position and orientation while a user...
Forum: Vizard 10-22-2008, 10:26 AM
Replies: 2
Views: 6,376
Posted By michaelrepucci
I would prefer to use a black background, but, to...

I would prefer to use a black background, but, to my knowledge, there is nothing I can do to adjust the spectral content of the display, nor the spectral filtering of the glasses. (Aside, of course,...
Forum: Vizard 10-10-2008, 11:25 AM
Replies: 2
Views: 6,376
Posted By michaelrepucci
red/green anaglyphic ghosting

I'm using red/green anaglyphs, and getting a small amount of ghosting (i.e., I can see the left eye's red image through the right eye's green filter). I've been told that a good correction for this...
Forum: Vizard 09-23-2008, 03:18 PM
Replies: 5
Views: 11,400
Posted By michaelrepucci
We're using a cave-like setup (a single...

We're using a cave-like setup (a single back-projected screen in an otherwise empty, dark room with head-tracking and stereo via shutter goggles) for experiments on the visual perception of depth. We...
Forum: Vizard 09-23-2008, 02:58 PM
Replies: 5
Views: 11,400
Posted By michaelrepucci
So that means I would have to compute the left...

So that means I would have to compute the left and right orthographic frustums on each frame? In that case, a cave with just one wall wouldn't be very useful. Or does the cave do something else...
Forum: Vizard 09-23-2008, 11:18 AM
Replies: 5
Views: 11,400
Posted By michaelrepucci
orthographic projection in a head-tracked cave environment

Is it possible to use orthographic projection in a head-tracked cave environment? I set up a cave, and tried to change the perspective

tracker = viztracker.add()
wall =...
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