Fixed: getting past Recursion in parm callback

[static]

So I have a post render script on a mantra node (named 'test_singleFrames') that edits the frame range and renders again (trying to render single frames in a batch mode). But when it reaches the callback script, I get a warning/error:

test_singleFrames:Render - Recursion in parm callback

Just off the top of anyone's head, is it possible to get past this detection? I'm trying to run a somewhat recursive function ...obviously.

The code for the callback script is as follows:

def isolate_frameRange(frames,node):
	'''
	frames => list of frames to render, node => hou.Node() for rop

	Edits the mantra nodes frame range and renders
	'''
	nextFrame = frames[0]
	remaining = ''
	node.parm('f1').set(nextFrame)
	node.parm('f2').set(nextFrame)
	if len(frames) > 1: #<--------------------- basically the recursion limit
		for f in frames[1:]:
			remaining += '%s,' % f
		remaining = remaining[:-1]
		post_script = 'import test;test.isolate_frameRange([%s],hou.pwd())' % remaining
		node.parm('postrender').set(post_script)
		node.parm('execute').pressButton() #<------ assuming this is the culprit for that recursion problem
	else:
		print '...Render Completed'

Of course, if there's a better way to go about batch rendering single frames, I'm all ears

EDIT: Well I replaced some of the code so it would just spawn a new node and render from it, rather than trying to repeatedly render the same node over and over... and the recursive error went away.

Edited June 26, 2009 by static