gimp star-trails layer stacker

startrails.py

import math
from gimpfu import *
import sys, os, math

def do_stack_propogate(image,drawable,apply_mask=False):
	top = image.active_layer
	found = False
	n = len(image.layers)
	i = 0
	gimp.progress_init("Stacking layers")	
	for l in image.layers:
		gimp.progress_update((100*i)/n)
		if found and l.name != "Background":
			l.mode = top.mode
			l.opacity = top.opacity
			if(apply_mask):
				# l.mask is not assignable, fix it someday
		if l == top:
			found = True

	
register(
    "python_fu_startrails",
    "Merge a stack of images into star trails",
    "Merge a stack of images into star trails (copies the current layer's mode+opacity into each layer below)",
    "Gopal V",
    "Gopal V",
    "2013",
    "<Image>/Filters/StarTrails", # None
    "RGB*",
    [
#		(PF_BOOL, "apply_mask", "Apply Mask", True),
    ],
    [],
    do_stack_propogate)

main()