Clear screen

[brendan...@students.berkeley.net]

Is there a way to clear the screen? I made this code:
from visual import *
scene.range = 10
def erase(evt):
    arrow.pos = vector(0,0,0)
    arrow.axis = vector(0,0,0)
scene.bind('keydown', erase)
while(0 == 0):
    ev = scene.mouse.getclick()
    click1 = sphere(pos = ev.pos, radius = .000001)
    ev = scene.mouse.getclick()
    click2 = sphere(pos = ev.pos, radius = .000001)
    arrow = arrow(pos = click1.pos, axis = click2.pos - click1.pos)

Using erase only gets rid of the last arrow. is there a way to make all the arrows be deleted when you press a key?

[Bruce Sherwood]

From the documentation on display windows:

objects A list of all the visible objects in the display; invisible objects and lights are not listed (scene.lights is a list of existing lights). For example, the following makes all visible boxes in the scene red:

    for obj in scene2.objects: 
        if isinstance(obj, box):
            obj.color = color.red

If the last line is obj.visible = False, all the objects disappear.

[Brendan Banfield]

Thanks!

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[Brendan Banfield]

Wait... what should the exact code be?  I can't get this to work.

[Bruce Sherwood]

Sorry, I plucked the documentation out of context. The default display is named "scene", so the for loop goes over scene.objects rather than scene2.objects, and you want to make all objects invisible, not just boxes. So here is the exact code:

for obj in scene.objects: 

    obj.visible = False

[Brendan Banfield]

Thanks! It's working now!

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