WorldViz User Forum - Positioning text with ORTHO parent

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- - Positioning text with ORTHO parent (https://forum.worldviz.com/showthread.php?t=5543)

Positioning text with ORTHO parent

I am trying to display some text on a black screen in Vizard. On single screen applications, this is very easy; I just turn the world off and display my text with the screen as the parent, i.e.:

Code:

text1 = viz.addText(txt, parent=viz.SCREEN)

My problem is when I create a three-screen application. To do so, I am creating three viz.WINDOW objects and offsetting the left and right windows by +/- 60-deg. I have to set the parent to viz.ORTHO if I wish to see text on these windows. However, they are being positioned to the default location of the bottom left of the specified window which is not where I want to see them.

Code:

text1 = viz.addText(txt, parent=viz.SCREEN, parent=viz.ORTHO, scene = screen.leftWindow)

The setPosition() function no longer works so I'm not really sure what I need to be doing in order to correctly position the text relative to the window.

You can specify pixel coordinates or link to a window location:

Code:

import viz

viz.go()



#set position in pixel coordinates

text1 = viz.addText('text1',parent=viz.ORTHO)

text1.setScale([100,100,0])

text1.setPosition([300,200,0])



#link to center top

text2 = viz.addText('text2',parent=viz.ORTHO)

text2.setScale([100,100,0])

text2.alignment(viz.ALIGN_CENTER_TOP)

viz.link(viz.CenterTop,text2)



#link to upper left with offset

text3 = viz.addText('text3',parent=viz.ORTHO)

text3.setScale([100,100,0])

text3.alignment(viz.ALIGN_LEFT_TOP)

link = viz.link(viz.LeftTop,text3)

link.setOffset([20,-20,0])

Ah!

It was pixel coordinates. I was attempting to use the same normalised screen units that worked when I was using viz.SCREEN as the parent so this makes much more sense now.

Thanks :-)