Modifying Vizinfo to Support Re-parenting Tip

[Gladsomebeast]

Flexible graphical user interfaces (GUIs) components often have a common parent node for global positioning and scale. Vizard's vizinfo module does not allow setting of vizinfo menus' parent, so one cannot incorporate them into GUI components. The following article describes how to fix the issue by adding a setParent method to a subclass of vizinfo's Info class.

http://vizworkshop.com/articles/vizinfo_reparenting.html (http://vizworkshop.com/articles/vizinfo_reparenting.html)

Here is the module that adds a setParent method to the Info class:


import viz
import vizinfo

def add(text, textsize=1.0, **kw):
return ParentableVizInfo(text, textsize, **kw)

class ParentableVizInfo(vizinfo.Info):
def __init__(self, text, textsize, parent=viz.SCREEN, scene=viz.MainScene, **kw):
vizinfo.Info.__init__(self, text, textsize, **kw)
self.setParent(newParent=parent, newScene=scene)
if parent != viz.SCREEN:
#remove initial offset so info in in center of parent node, not [.95, .95, 0]
self.translate([0,0,0])

def setParent(self, newParent=viz.SCREEN, newScene=viz.MainScene):
self._group.parent(newParent, newScene)


if __name__ == '__main__':
viz.go()
SIM_SCENE = viz.Scene2
viz.scene(SIM_SCENE)
node = viz.addGroup(parent=viz.SCREEN, pos=[.5, .5, 0], scene=SIM_SCENE)
add('test asdafasdf', parent=node, scene=SIM_SCENE)