Tracking skews collisions

[Jeff]

The problem is the position of the navigation node keeps going after the viewpoint stops from a collision. When you try to back away from a collision object it takes awhile for the navigation node to catch up to the viewpoint.

A solution for this is to use a view_collision module written for use with vizconnect. This checks for collisions against an avatar object and then goes back up the chain to modify any transport node that's driving it. To be clear, no avatar needs to be rendered, that's just what vizconnect uses to group the head tracker and any hand trackers. I've attached an example that includes the view_collision module, the main script that adds a maze and collisions, and desktop vizconnect configuration files. If you create your own vizconnect config file with PPT+Oculus and load that with the maze script it should work with collisions. The setup for the collision detection is in warehouse_maze.py:

ac = view_collision.AvatarCollision(collideTrackers=True) 
ac.setCollideList([vizconnect.AVATAR_HEAD]) 
ac.setTransport(vizconnect.getTransport().getNode3d())

[bbb]

Hey Jeff,
I tried to use your module (view_collission) but some issues appeared:
1)it was an error when trying to use the self._avatar.getSkeleton().getBoneDict()
2) I'm using a transport and not an avatar so i need to replace the avatar commands with transport ones, how can i do that?

I'm using vizconnect with oculus rift Dk2 AS TRACKER, than the transport is walking and the input device is xbox 1 controller (using direct input) and finally the oculus rift DK2 as display (hirarchic order - tracker->transport->display)

Thanks in advance.

[Jeff]

There's no need to download the view collision module I attached in my previous post. The latest view collision module is now included with the Vizard installation. If you have a vizconnect file with an avatar and transport then you can run the following code:

import viz
import vizconnect
from vizconnect.util import view_collision

vizconnect.go('vizconnect_config.py')
maze = viz.addChild('maze.osgb')

ac = view_collision.AvatarCollision()
ac.setCollideList([vizconnect.AVATAR_HEAD])
ac.setTransport(vizconnect.getTransport().getNode3d())

Your vizconnect file must have an avatar to use this collision module. If you don't want to render an avatar then choose the head and hands option and delete the glove.cfg file listed under right hand filename.

[bbb]

Hi Jeff,
Thanks for your replay.
I have vizard 5.2 with active license and i need it to be that kind of version, is it free to upgrade it to vizard 5.3 with active license? if not, is your module in the thread is similar to the one added to vizard 5.3 or that changes have been made since than?
Third question is when in the hierarchy should i put my avatar in order for your module to work?

Thank you.