You forgot about the hierarchical relationship, the a2dRightCenter node was created in advance. Accordingly, he got the order in the rendering, first you need to make the frame his child. There is no mistake here, the misunderstanding lies in the very presence of positional useless nodes, what the author of this code was counting on in base is not clear.
from direct.showbase.ShowBase import ShowBase
from direct.gui.DirectGui import DirectFrame, DirectButton, DGG
class Game(ShowBase):
def __init__(self):
ShowBase.__init__(self)
#frameAlpha = 1 # Makes the button "disappear"
frameAlpha = 0.5 # Makes the button partially visible
self.background = DirectFrame(frameSize=(-2048, 2048, -2048, 2048), frameColor=(.25, .25, .25, frameAlpha))
self.button = DirectButton(self.a2dRightCenter, text=("center",), scale=.07, pos=(-.25, 0, 0))
render2d.ls()
app = Game()
app.run()
PandaNode render2d S:(CullFaceAttrib DepthTestAttrib DepthWriteAttrib MaterialAttrib)
PGTop aspect2d T:(scale 0.75 1 1) S:(CullBinAttrib)
PandaNode a2dBackground
PandaNode a2dTopCenter T:(pos 0 0 1)
PandaNode a2dTopCenterNS T:(pos 0 0 1)
PandaNode a2dBottomCenter T:(pos 0 0 -1)
PandaNode a2dBottomCenterNS T:(pos 0 0 -1)
PandaNode a2dLeftCenter T:(pos -1.33333 0 0)
PandaNode a2dLeftCenterNS T:(pos -1.33333 0 0)
PandaNode a2dRightCenter T:(pos 1.33333 0 0)
PGButton DirectButton-pg1 T:(pos -0.25 0 0 scale 0.07)
PandaNode a2dRightCenterNS T:(pos 1.33333 0 0)
PandaNode a2dTopLeft T:(pos -1.33333 0 1)
PandaNode a2dTopLeftNS T:(pos -1.33333 0 1)
PandaNode a2dTopRight T:(pos 1.33333 0 1)
PandaNode a2dTopRightNS T:(pos 1.33333 0 1)
PandaNode a2dBottomLeft T:(pos -1.33333 0 -1)
PandaNode a2dBottomLeftNS T:(pos -1.33333 0 -1)
PandaNode a2dBottomRight T:(pos 1.33333 0 -1)
PandaNode a2dBottomRightNS T:(pos 1.33333 0 -1)
PGItem DirectFrame-pg0
PGTop pixel2d T:(pos -1 0 1 scale 0.0025 1 0.00333333) S:(CullBinAttrib)
PandaNode camera2d
Camera cam2d ( OrthographicLens )
OrthographicLens film size = 2 2
