how to write the interface code

[Gladsomebeast]

For your elif block:

if link is not none: remove link

[Gladsomebeast]

Better. Replace elif with if.

def toggleLink():
	global link
	if link:
		#If link exits, stop grabbing
		link.remove()
		link = None

	if vizmat.Distance(hand.getPosition(), ball.getPosition()) < .5:
		link = viz.grab( hand, ball )

vizact.onpick(ball,toggleLink)

[nasr]

paul thank you very much for your reply.this is my full program

import viz

viz.go()

viz.MainView.setPosition(0,1.5,-4)
import viztracker
tracker = viztracker.MousePos()
myroom=viz.add('room.wrl')
#Add the object that will do the grabbing and link it to the tracker
hand = viz.add('marker.wrl')
viz.link(tracker, hand)

#turn off mouse navigation
viz.mouse(viz.OFF)

#Add the object that the marker will grab
ball = viz.add( 'ball.wrl' )

ball.translate( 0.5, 1.5, 3 )
table=viz.add('table.wrl')
link = None
#Grab or let go of the ball

def toggleLink():
	global link
	if link:
		#If link exits, stop grabbing
		link.remove()
		link = None
         elif vizmat.Distance(hand.getPosition(), ball.getPosition()) < .5:
		vizact.onpick(ball,toggleLink)

now i want to move the ball and the table seperately. now could you please tell me how to make the changes.

[nasr]

vizmat.Distance(hand.getPosition(), ball.getPosition()) < .5: link = viz.grab( hand, ball )

vizact.onpick(ball,toggleLink)
paul

in the above code im able to grab the ball only. if im trying this loop with an if condition, after selecting the ball im not able to stop the ball how to change the code?

[Gladsomebeast]

My last post from yesterday will fix your problem. Notice how I changed the elif to if in the toggleLink function.

Also, you will want to call toggleLink whenever the mouse button is pressed, so replace vizact.onpick with vizact.onmousebutton.

[nasr]

paul thanks for your quick reply... if i want to rotate the object how can i do it?