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- Vizard (https://forum.worldviz.com/forumdisplay.php?f=17)

- - 3dcompass (https://forum.worldviz.com/showthread.php?t=4690)

Hi im trying to make a 3d compass like a flat disc that sits on the ground and rotates in place.

so far i am doing this:

Code:

compass = viz.addChild('arrow.osgb')

compass.color( 0.2,0.8,0.8 )

###########################################

# get the main viewpoint and link a compass to it

view = viz.MainView



#link compass pos to viewpoint

compasslink = viz.link(view, compass)





pitch, roll, yaw = view.getEuler()





compasslink.setEuler([0,0,-yaw])



#offset compass origion before linking to view

compasslink.preTrans([0, -0.5, 0])

this rotates fine, opposite to the view rotate. However if I pitch up the view LMB+RMB the compass doesn't rotate up with the view.
so i figure that i can set the -pitch to rotate it opposite.

Code:

compasslink.setEuler([-pitch,0,-yaw])

However That does nothing. I know there is HEAD_ori etc but that does nothing too. Any ideas???? im really stuck....

If you want the compass to rotate with the viewpoint you can create a link and set the mask to orientation only. If you want the compass yaw to be the opposite of the viewpoint use the link.swapEuler command:

Code:

import viz

import vizshape

viz.go()



viz.add('dojo.osgb')



compass = vizshape.addArrow()

compass.setPosition([0,0.5,0])

compassLink = viz.link(viz.MainView,compass,mask=viz.LINK_ORI)



#Negate yaw value

#compassLink.swapEuler([-1,2,3])



subWindow = viz.addWindow(pos=[0.5,1])

subWindow.setSize(0.5,0.5)

view = viz.addView()

view.move([0,-1,-4])

subWindow.setView(view)