Display vtkRendererWidgets

[Yi-Yu Chou]

Dear python users,

I tried to display 4 vtkRendererWidgets arrayed in a 2x2 grid.
I method that I use is :

root = Tk()
frame1 = Frame(root).pack(side=TOP)
frame2 = Frame(root).pack(side=BOTTOM)
x_pane = vtkTkRenderWidget(frame1,width=200,height=200)
y_pane = vtkTkRenderWidget(frame1,width=200,height=200)
z_pane = vtkTkRenderWidget(frame2,width=200,height=200)
all_pane = vtkTkRenderWidget(frame2,width=200,height=200)

x_pane.pack(side=LEFT)
y_pane.pack(side=RIGHT)
z_pane.pack(side=LEFT)
all_pane.pack(side=RIGHT)
......................................
Idealy, the arrangement would be like :

X | Y
-- | --
Z | all

However, I got some errors when running my code.
It seems that I can't use the syntax: vtkTkRendererWidget(frame1)
(I tried to display only one vtkTkRendererWidget by using
vtkTkRendererWidget(root), and it worked).
Any ideas ?
Thanks in advance !!!

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[Guest]

Dear python users,

I tried to display 4 vtkRendererWidgets arrayed in a 2x2 grid.
I method that I use is :

root = Tk()
frame1 = Frame(root).pack(side=TOP)
frame2 = Frame(root).pack(side=BOTTOM)

Here is your problem! The pack method returns None, such that frame1 and
frame2 are None. Change it to:
frame1 = Frame(root)
frame1.pack(side=TOP)
frame2 = Frame(root)
frame2.pack(side=TOP)

<snip rest of program>

Regards
Jorgen

 

[Sean Richards]

Dear python users,

I tried to display 4 vtkRendererWidgets arrayed in a 2x2 grid.
I method that I use is :

root = Tk()
frame1 = Frame(root).pack(side=TOP)
frame2 = Frame(root).pack(side=BOTTOM)
x_pane = vtkTkRenderWidget(frame1,width=200,height=200)
y_pane = vtkTkRenderWidget(frame1,width=200,height=200)
z_pane = vtkTkRenderWidget(frame2,width=200,height=200)
all_pane = vtkTkRenderWidget(frame2,width=200,height=200)

x_pane.pack(side=LEFT)
y_pane.pack(side=RIGHT)
z_pane.pack(side=LEFT)
all_pane.pack(side=RIGHT)
.....................................
Idealy, the arrangement would be like :

X | Y
-- | --
Z | all

However, I got some errors when running my code.
It seems that I can't use the syntax: vtkTkRendererWidget(frame1)
(I tried to display only one vtkTkRendererWidget by using
vtkTkRendererWidget(root), and it worked).
Any ideas ?
Thanks in advance !!!

Not being a VTK guru myself but would it not be easier to just have the
1 vtkTkRendererWidget and then add 4 renderers each displaying to a
separate area of the viewport.

Here is a quick example

--8<--------------------------------------------------------------------

from vtk import *
from vtk.tk.vtkTkRenderWindowInteractor import *
from Tkinter import *

def coneExample1():
""" Creates a Cone inside a vtkTkRenderWindowInteractor. """

# create root window
root = Tk()
root.title("Cone 1")

win = vtkTkRenderWindowInteractor(root, width=300, height=300)
win.Initialize()

def quit(obj=root):
obj.quit()

win.AddObserver("ExitEvent", lambda o,e,q=quit: q())

ren1 = vtk.vtkRenderer()
win.GetRenderWindow().AddRenderer(ren1)
ren2 = vtk.vtkRenderer()
win.GetRenderWindow().AddRenderer(ren2)
ren3 = vtk.vtkRenderer()
win.GetRenderWindow().AddRenderer(ren3)
ren4 = vtk.vtkRenderer()
win.GetRenderWindow().AddRenderer(ren4)

cone = vtk.vtkConeSource()
cone.SetResolution(8)

coneMapper = vtk.vtkPolyDataMapper()
coneMapper.SetInput(cone.GetOutput())

coneActor = vtk.vtkActor()
coneActor.SetMapper(coneMapper)

ren1.AddActor(coneActor)
ren2.AddActor(coneActor)
ren3.AddActor(coneActor)
ren4.AddActor(coneActor)
ren1.SetViewport(0, 0, 0.5, 0.5)
ren2.SetViewport(0.5, 0, 1, 0.5)
ren3.SetViewport(0, 0.5, 0.5, 1)
ren4.SetViewport(0.5, 0.5, 1, 1)

# pack the win into the tk root
win.pack(fill='both', expand=1)
win.Start()

# start the tk mainloop
root.mainloop()

if __name__ == "__main__":
coneExample1()

--8<--------------------------------------------------------------------

Sean