Re: [Visualpython-users] 1 objectlist and 2 displays

[Bruce S. <bas...@un...>]

I think the problem with copying objects to a second window is that you
can't assign to scene.objects, you can only read it.

Below is a kludge to copy objects from one window into another. Maybe
someone else can think of a way to convert obj.__class__ to a character
string so that it can be used in exec, instead of having to create a
dictionary of existing Visual objects? Or some other scheme altogether?

This program creates two cubes and an arrow on the left, then copies these
objects into a second window on the right. The camera positions are adjusted
to be different in the two windows, in order to provide a true stereo pair
that can be merged by making your eyes "wall-eyed" (the opposite of
cross-eyed). Zoom/rotate in the left window and both camera positions change
to continue to give you a 3D look. I think I don't have the camera angles
quite right, because I get a headache after brief viewing!

Bruce Sherwood

from visual import *
vobjects = {box:'box', sphere:'sphere', cylinder:'cylinder',
            arrow:'arrow', cone:'cone', ring:'ring',
            curve:'curve', convex:'convex', label:'label',
            frame:'frame', faces:'faces'}
x = 300
y = 400
w = 200
h = 200
eyeangle = 0.15 # interocular angle
left = display(x=x, y=y, width=w, height=h)
right = display(x=x+w, y=y, width=w, height=h)
left.select()

b1=box(pos=(-1,0,0), color=color.red)
b2=box(pos=(1,-1,0), color=color.cyan)
a1=arrow(pos=(-0.5,0,0), axis=(1,-1,0), color=color.yellow)

right.select()
for obj in left.objects:
    exec 'newobj='+vobjects[obj.__class__]+'()' # create object in 2nd
window
    for member in obj.__members__:
        if member == 'display': continue # avoid putting into scene1
        exec 'newobj.'+member+'=obj.'+member # set attribute

while 1:
    right.up = left.up
    leftforward = left.center-left.mouse.camera
    right.forward = rotate(leftforward, angle=eyeangle, axis=left.up)


----- Original Message -----
From: "Cettinich Edwin (LWE)" <edw...@lw...>
To: <vis...@li...>
Sent: Tuesday, November 05, 2002 4:36 AM
Subject: [Visualpython-users] 1 objectlist and 2 displays


Hi,

I try to make 1 objectlist visible in 2 displays.
But neither
########################################
from visual import *
scene1=display(title="1st")
b=box(x=-1)
b=box(x=1,y=-1)
scene2=display(title="2nd")
scene2.objects=scene1.objects
########################################
nor
########################################
import copy
from visual import *
scene1=display(title="1st")
b=box(x=-1)
b=box(x=1,y=-1)
scene2=display(title="2nd")
scene2.objects=copy.deepcopy(scene1.objects)
########################################
could make scene2 show the objects owned by scene1.

Does anyone have a suggestion what to do?

Thanks,

Edwin




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