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Old 10-25-2011, 09:30 AM
kovitch kovitch is offline
Join Date: Sep 2010
Posts: 30
Moving/grabbing 3D objects


Is there any kind of example (something to start from) to move&grab objects from a place to another with the mouse, like in the following video:

Best regards,

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Old 12-01-2011, 02:00 PM
amith amith is offline
Join Date: Dec 2011
Posts: 5
how to grab and move objects using mouse

Can anyone please help me on how i can grab and move objects in vizard 4 using mouse.

Waiting for a reply.Thanks a ton in advance.


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Old 12-01-2011, 04:48 PM
Jeff Jeff is offline
WorldViz Team Member
Join Date: Aug 2008
Posts: 2,448
You can use the viz.grab command to grab objects:
import viz
import vizact
import viztracker



#Add the object that will do the grabbing
hand = viz.addChild('marker.wrl')

#link the hand to a 3D mousetracker
mouseTracker = viztracker.MouseTracker()

#turn off mouse navigation and hide cursor

#Add the object that the marker will grab
ball = viz.addChild( 'basketball.osgb',pos=[0.5,1.8,2.5],scale=[2,2,2])

link = None #The handle to the link object
def grabBall():
	global link
	link = viz.grab( hand, ball )
def releaseBall():
	global link
	link = None
If you want a hand model that's animated when it grabs take a look at Grabbing with viztracker. That requires a configuration file that you create using the viztrackersetup utility. Make sure have Keybd w/ Mouse Hands set for tracker type, as shown in the image.
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Old 12-04-2011, 12:11 AM
amith amith is offline
Join Date: Dec 2011
Posts: 5
Thank you so much for the reply.

Do you have any idea about how i can do the similar thing using a Wii.

Thanks a ton in advance.
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Old 12-05-2011, 07:37 PM
Jeff Jeff is offline
WorldViz Team Member
Join Date: Aug 2008
Posts: 2,448
There's documentation for the wiimote plug-in the Vizard Help. Also if you search for wiimote in these forums you'll find some example code. You can use vizact.onupdate or vizact.ontimer to register a callback function that gets called every frame. Within your function you can update the hand position based on wiimote data.
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