In the following code, the portion I'm having a problem with is outlined in
stars, but since the overall code was short, I included it, just in case
something else might be hindering the process.
When I execute the script, it shows my main window, then if I press the CKEY
it's *supposed* to call the cleanSlate() function, which grabs and deletes
objects in the contents of another window.
My problem is, it doesn't execute cleanSlate() until I hit the ESCKEY, or the
QKEY. In the original example code I'm using as a template(I put in the ev()
portion of the main template below my current code, so maybe someone could see
where I deviated from the original, and why the differences in implementing
redraw) , it's setup in the same manner.
Why would it not execute immediately(during the main loop) in mine, but in the
original it does?
import Blender
from Blender.BGL import *
from Blender import Draw, Scene, Object, Mesh
R = G = 0
B = A = 1
title = "Basic Object Manipulation"
instructions = "Select an object to manipulate"
len1 = Draw.GetStringWidth(title)
len2 = Draw.GetStringWidth(instructions)
# Removes default objects in scene
def cleanSlate(scn):
for ob in scn.objects:
if ob.getType == 'Mesh' or 'Camera':
scn.objects.unlink(ob)
#defining the window
def show_win():
glClearColor(R,G,B,A)# define color used to
clear buffers
glClear(GL_COLOR_BUFFER_BIT) # use it to clear the
color buffer
glColor3f(0.35,0.18,0.92)# define default color
glColor3f(.0,0.0,0.0)# change default color for
next item
glRecti(10, 450, 20+len2, 113) # sets a box border
glColor3f(0.2,0.2,0.2) # change default color for
next item
glRasterPos2i(14,435)# move cursor
Draw.Text(title) # draw this text there
glRasterPos2i(14,410)# move cursor again
Draw.Text(instructions) # draw another msg
**
# defining the event handling list
def ev(evt, val):
scn = Scene.getCurrent()
if evt == Draw.ESCKEY or evt == Draw.QKEY:
Draw.Exit()
elif not val:
return
elif evt == Draw.CKEY:
cleanSlate(scn)
else:
return
Draw.Redraw(1)
**
# build the window
Draw.Register(show_win, ev, None) # start the main loop
#End code
This is the original ev()
**
def ev(evt, val): # event callback for Draw.Register()
global R,G,B,A # ... it handles input events
if evt == Draw.ESCKEY or evt == Draw.QKEY:
Draw.Exit()# this quits the script
elif not val: return
elif evt == Draw.LEFTMOUSE: R = 1 - R
elif evt == Draw.MIDDLEMOUSE: G = 1 - G
elif evt == Draw.RIGHTMOUSE: B = 1 - B
elif evt == Draw.WHEELUPMOUSE:
R += 0.1
if R > 1: R = 1
elif evt == Draw.WHEELDOWNMOUSE:
R -= 0.1
if R < 0: R = 0
else:
return # don't redraw if nothing changed
Draw.Redraw(1)
TIA,
David
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