Animation export problem

Coding Python Support
1

I’ve been working on a way to enable animation export for the existing wavefront export script, and with some alterations to the newFName function, removal of the file selector function, and the addition of a while loop I got the initial one to work (saved under a different name so I didn’t ruin the default one).

I’ve decided to add a GUI so I can choose to export a single frame or an entire animation, and I keep running into errors with the animation export:

import Blender
from Blender import *
from Blender import Draw
from Blender.Draw import *
from Blender.BGL import *
from OBJExport import *

anim = 0
mystr = "Still"
desc = "Export single frame"
sFrame = Get('curframe')
eFrame = Get('endframe')
	
def event(evt,val):
	"""if evt == ESCKEY:
		Exit()"""

def button_event(evt):
     global anim, mystr,sFrame,eFrame
     if evt == 1:
       anim = 1 - anim
       Redraw(1)
	
     if evt == 2:
       if anim:
         while sFrame <= eFrame:
         print "Saving file ", sFrame, " of ",eFrame
         save_obj(newFName('.obj'))
         sFrame = Set('curframe',sFrame+1)
      else:
        print "Saving file"
        save_obj(newFName('.obj'))
	
      if evt == 3:
        Exit()

def gui():
	global anim, mystr,sFrame
	if anim:
		mystr = "Animate"
		desc = "Export animation"
	else:
		mystr = "Still"
		desc = "Export single frame"
	Toggle(str(mystr),1,32,730,64,32,anim,desc)
	PushButton("Export",2,98,730,64,32)
	PushButton("Exit",3,162,730,64,32)

Register(gui,event,button_event)

The problem is in the Set(‘curtime’) function. I can’t remember exactly what it says, and I can’t reproduce it since I’m not on my development computer, but it’s something about type being none. I had the Set(curframe) function working earlier, but I lost it when I reverted it to the original file.

2

Try this.

Change


     if evt == 2: 
       if anim: 
         while sFrame <= eFrame: 
         print "Saving file ", sFrame, " of ",eFrame 
         save_obj(newFName('.obj')) 
         sFrame = Set('curframe',sFrame+1)

To


     if evt == 2: 
       if anim: 
         while sFrame <= eFrame: 
           print "Saving file ", sFrame, " of ",eFrame 
           save_obj(newFName('.obj'))
           Set('curframe',sFrame) 
           sFrame=sFrame+1

Note don’t forget to indent your while code block and Set does not return a value so sFrame was getting set to none.

3

Also here is the link to the current API ref.

http://www.blender.org/modules/documentation/234PythonDoc/frames.html

4

Thank you. I figured it out when I got to my uncle’s last night (my main computer is there, since I’m housesitting). Got a few other bugs with the script, but those will be addressed in another thread.