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Search took 0.01 seconds; generated 61 minute(s) ago. Search: Posts Made By: performlabrit
Forum: Vizard 07-07-2014, 11:06 AM
Replies: 2
Views: 24,100
Posted By performlabrit
Problem solved, thanks to the persistence of a...

Problem solved, thanks to the persistence of a wily grad student and a lengthy back and forth with Jeff. Thanks again, Jeff! You're always a huge help.

To those having similar issues:

It...
Forum: Vizard 06-26-2014, 09:32 AM
Replies: 2
Views: 24,100
Posted By performlabrit
No 3D link with a Benq?

Hi guys, I'm trying to get my BenQ to display in 3d using 3D link, and i'm not having any luck.

The projector supports 60Hz Top-Bottom 3D for resolutions up to SXGA+....
Forum: Vizard 06-10-2014, 05:50 AM
Replies: 8
Views: 68,550
Posted By performlabrit
Seb, see my post:...

Seb, see my post: http://forum.worldviz.com/showthread.php?t=5034

To use the bump mapping etc may require use of a vizfx style lightsource, and not a standard lightsource. Let me know how it goes.
Forum: Vizard 05-14-2014, 05:35 AM
Replies: 1
Views: 21,734
Posted By performlabrit
Transparency issues in Viz5?

Here is a snippet of code that produces different results in Viz4 and Viz5.

It works correctly in Viz4, producing a semi-opaque green box with 1 red side. In Viz5, it produces a black box (no...
Forum: Vizard 05-09-2014, 08:37 AM
Replies: 0
Views: 22,643
Posted By performlabrit
How to create illuminated objects in an otherwise dark room

Here's how to simulate flashlight exploration of a dark room. I struggled with this for the reason that it requires use of the not-yet-documented function "vizfx.setAmbientColor(viz.BLACK)"

Many...
Forum: Vizard 05-01-2014, 11:51 AM
Replies: 8
Views: 38,999
Posted By performlabrit
Light baked into object?

Hey Shiva, maybe you can help me. I've just gone through the same struggle, but now have working dynamic lighting.

However, I find that my object created in 3DSMax is dimly lit even in the...
Forum: Vizard 04-29-2014, 01:43 PM
Replies: 4
Views: 31,457
Posted By performlabrit
Note to all: I was told by Vizard to switch to...

Note to all: I was told by Vizard to switch to Vizard 5, which supports bump mapping. Vizard 4, I infer, does not.
Forum: Vizard 04-17-2014, 11:56 AM
Replies: 4
Views: 31,457
Posted By performlabrit
Shiva: Although this is a suitable solution for...

Shiva: Although this is a suitable solution for those who will be working with me for an extended period, the requirement to learn a new complicated piece of software would discourage many. This is...
Forum: Vizard 04-14-2014, 06:03 AM
Replies: 4
Views: 31,457
Posted By performlabrit
Update on exporting from Maya to Vizard?

I understand that Vizard is 3DsMax - centric, and that's fine. However, here at RIT, many of our students are trained initially on Maya. One of my students has been struggling to export a bump...
Forum: Vizard 04-11-2014, 10:42 AM
Replies: 1
Views: 19,944
Posted By performlabrit
Solved! Here's a way to access the SDK functions...

Solved! Here's a way to access the SDK functions directly, using ctypes module's DLL support. Special thanks to Flip Phillips at Skidmore College for the solution.
Forum: Vizard 04-11-2014, 10:29 AM
Replies: 2
Views: 24,598
Posted By performlabrit
Ah, rookie mistake here. Viz.lighting was off. ...

Ah, rookie mistake here. Viz.lighting was off.

Thanks!
Forum: Vizard 04-11-2014, 08:35 AM
Replies: 1
Views: 19,944
Posted By performlabrit
Timestamps on Arrington data? VPX.dll?

I'm attempting to use the Arrington interface, but want accurate timing data.

Although the Vizard plugin does not provide a function to get accurate timing information, the Arrington SDK does,...
Forum: Vizard 03-17-2014, 07:11 AM
Replies: 2
Views: 24,598
Posted By performlabrit
Dark room illuminated by flashlight?

I'm having some strange issues with lighting.

My goal is to create a perfectly dark room that can be illuminated with a directional spotlight / flashlight.

However, I'm unable to get started,...
Forum: Vizard 03-03-2014, 07:16 AM
Replies: 2
Views: 42,395
Posted By performlabrit
Vision scientist here. Awesome idea, Notch! ...

Vision scientist here. Awesome idea, Notch! Best of luck with that.
Forum: Vizard 02-18-2014, 06:03 AM
Replies: 0
Views: 24,178
Posted By performlabrit
How to fixing unpredictable physics with manual intervention?

Hello all,

I'm trying to run an experiment in which I need very predictable physical interactions between a bouncing ball and the ground. For example, if the ball is dropped from a known height,...
Forum: Vizard 01-06-2014, 09:57 AM
Replies: 1
Views: 21,399
Posted By performlabrit
I've shared this problem with a good friend, and...

I've shared this problem with a good friend, and master of ODE (open dynamics engine). The physics engine used by Vizard (OPAL) is just a high-level interface to ODE. He was pretty confused by the...
Forum: Vizard 01-06-2014, 06:26 AM
Replies: 1
Views: 21,399
Posted By performlabrit
Can Vizard/OPAL create a perfectly elastic collision?

I'm currently trying to have a ball bounce upon the ground so that the interaction is perfectly elastic. THus, upon bounce, the amount of energy lost would be equal to the "coefficient of...
Forum: Vizard 12-19-2013, 06:31 AM
Replies: 3
Views: 39,108
Posted By performlabrit
Sure did. It was rotating in an unknown frame of...

Sure did. It was rotating in an unknown frame of reference - perhaps the world-base frame of ref, but it's unclear.
Forum: Vizard 12-17-2013, 08:22 AM
Replies: 3
Views: 39,108
Posted By performlabrit
TO answer my own question: The rotation...

TO answer my own question:

The rotation didn't seem to work, so I've achieved my goal by:

- Not linking, but creating vizShapes that are children of the hmdBox node (that is linked to the...
Forum: Vizard 12-17-2013, 06:32 AM
Replies: 3
Views: 39,108
Posted By performlabrit
Rotate object around mainView?

I'm having a bit of trouble here, with what I think is a simple problem.

I have linked the mainView to a vizShape object hmdBox. This box reflects head position returned by a motion capture...
Forum: Vizard 12-13-2013, 12:33 PM
Replies: 1
Views: 36,386
Posted By performlabrit
Eye position relative to center of head?

In my simulation, I am linking the mainview to the position/orientation of the head tracked by my motion capture system (in my case, Phasespace).

It is necessary that the rigid body returned by...
Forum: Vizard 11-05-2013, 10:48 AM
Replies: 2
Views: 52,378
Posted By performlabrit
then accurate real-time immersive interaction is not possible!

Thank you for the reply farshizzo. Unfortunately, the answer is a bit disappointing. The NVIS line of helmets requires a 60 hz input, and will not function if vsync is turned off, or >60hz. I...
Forum: Vizard 10-29-2013, 05:55 AM
Replies: 3
Views: 26,743
Posted By performlabrit
Same issue

This is likely a very common issue. I'm taking the approach of using a triple head to go box. It's not ideal, for the reason that I am trying to get system latency as low as possible, and I'm not...
Forum: Vizard 10-28-2013, 06:52 AM
Replies: 12
Views: 43,198
Posted By performlabrit
Guys, because our focus has shifted a bit, I have...

Guys, because our focus has shifted a bit, I have decided to move the last post to a new thread:

"Vsync prevents using fresh motion capture data in physics simulations?"
Forum: Vizard 10-28-2013, 06:51 AM
Replies: 2
Views: 52,378
Posted By performlabrit
Vsync prevents using fresh motion capture data in physics simulations?

I'm seeking advice on a limitation that I believe is imposed by the coupling of the viz.go() loop speed to the vertical refresh rate. This limitation seems to prevent the use of peripherals with a...
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