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  #1  
Old 02-06-2007, 10:09 AM
Jerry Jerry is offline
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Join Date: Jun 2004
Posts: 105
What a drag?

What is viz.drag() supposed to do? When I run

duck = viz.add('duck.wrl')
duck.translate(0,1.5,4)
viz.grab(viz.Mouse,duck)

the duck moves with the mouse but doesn't stay under the cursor
as one might expect if it were being dragged.

PS - Is Vizard compatible with Vista?
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  #2  
Old 02-06-2007, 10:10 AM
Jerry Jerry is offline
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Join Date: Jun 2004
Posts: 105
I meant viz.grab()
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  #3  
Old 02-06-2007, 10:19 AM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
The viz.grab() command is not meant to be used for dragging objects with the mouse. Look at the tutorial_grab.py script in the [Vizard30]\tutorial\link directory for an example. It's mostly used when you are doing some sort of hand tracking and you want to simulate grabbing an object.
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  #4  
Old 02-07-2007, 09:07 AM
Gladsomebeast Gladsomebeast is offline
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Join Date: Mar 2005
Location: Isla Vizta, CA
Posts: 397
viz.grab() with the mouse makes sense if the object you are grabbing is on the screen.

Code:
import viz
viz.go()


screenText = viz.addText('GrabME', viz.SCREEN)
s = 1
screenText.scale(s,s,s)
screenText.setPosition(.5, .5)

grabLink = None

def onMouseDown(button):
	global grabLink
	if grabLink:
		#in case we missed mouse up event
		grabLink.remove()
	grabLink = viz.grab( viz.Mouse, screenText )

viz.callback(viz.MOUSEDOWN_EVENT,onMouseDown)


def onMouseUp(button):
	global grabLink
	grabLink.remove()
	grabLink = None

viz.callback(viz.MOUSEUP_EVENT,onMouseUp)
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