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  #1  
Old 06-05-2013, 09:33 AM
Andy Andy is offline
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Join Date: Mar 2008
Location: Germany
Posts: 36
Link only one Axis

Hello,
I want to link the orientation of an mySensor with a node (box).
In my example I link the node with the MainView. Furthermore, I want to link the orientation of my sensor (src) with the node (dst) too. But not all axis, like in my example, I want to link only the orientation of the Y-axis of mySensor.
Is this possible?

Code:
import viz
viz.go()

box = viz.add('box.wrl', pos=[0,0,0])
plan = viz.add('tut_ground.wrl')

mySensor = viz.add( 'testtrack_all.dls' )

link = viz.link(viz.MainView, box, mask=viz.LINK_POS|viz.LINK_ORI)
link.postTrans([0,0,6])
viewLinkOp = link.preMultLinkable(mySensor, target=viz.LINK_ORI)
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  #2  
Old 06-06-2013, 12:52 PM
Kevin Chiu Kevin Chiu is offline
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Join Date: Feb 2012
Posts: 26
Hi Andy,

Is this the effect which you want?

Code:
import viz
viz.go()

box = viz.add('box.wrl', pos=[0,0,0])
plan = viz.add('tut_ground.wrl')

mySensor = viz.add( 'testtrack_all.dls' )

link = viz.link(mySensor, box, mask=viz.LINK_ORI)
link.preScale([1,0,0], target = viz.LINK_ORI_OP)
viewLink = viz.link(link, viz.MainView)
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  #3  
Old 06-07-2013, 12:38 AM
Andy Andy is offline
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Join Date: Mar 2008
Location: Germany
Posts: 36
In part, now affected mySensor also on the MainView, that shouldnt‘ be. The orientation of mySensor (y-axis) should additional affected only on the linked box.
Any idea?
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  #4  
Old 06-07-2013, 02:09 PM
Kevin Chiu Kevin Chiu is offline
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Join Date: Feb 2012
Posts: 26
You can just comment out the last line of the script.
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  #5  
Old 06-10-2013, 01:18 AM
Andy Andy is offline
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Join Date: Mar 2008
Location: Germany
Posts: 36
Yes I know but I want to link the MainView to the box node. The y orientation link of mySensor should be added like the ‘preMultLinkable’ function realize this.
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  #6  
Old 06-13-2013, 01:01 AM
Andy Andy is offline
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Join Date: Mar 2008
Location: Germany
Posts: 36
Is there no solution for my problem?
- Filter a pre-multiply linkable operator so that only one axis of the pre-multiply-node takes an effect on the main link, like "target = viz.LINK_ORI_Y"
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  #7  
Old 06-13-2013, 11:33 AM
Jeff Jeff is offline
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Join Date: Aug 2008
Posts: 2,471
You want the position/pitch/roll of the box based on the viewpoint and the yaw of the box based on the sensor, correct?

If that's the case you could manually update the box orientation every frame in a function registered with vizact.onupdate:
Code:
import viz
import vizact
viz.go()

box = viz.add('box.wrl', pos=[0,0,0])
plan = viz.add('tut_ground.wrl')

mySensor = viz.add( 'testtrack_all.dls' )

link = viz.link(viz.MainView, box, mask=viz.LINK_POS)
link.postTrans([0,0,6])

def updateOri():
	yaw = mySensor.getEuler()[0]
	pitch = viz.MainView.getEuler()[1]
	roll = viz.MainView.getEuler()[2]
	box.setEuler([yaw,pitch,roll])
	
vizact.onupdate(0,updateOri)
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  #8  
Old 06-18-2013, 02:30 AM
Andy Andy is offline
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Join Date: Mar 2008
Location: Germany
Posts: 36
Thanks it works
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