Gimp: Tile an image to 16x the size via reflections

reflection_tile.py

#!/usr/bin/env python

from gimpfu import *

def reflection_tile(image, drawable):

    canvas = gimp.Image(drawable.width * 4, drawable.height * 4, RGB)

    for layer in reversed(image.layers):
        layer_tile = canvas.new_layer(layer.name)

        rotation = gimp.Image(drawable.width * 2, drawable.height * 2, RGB)
        rot_base = rotation.new_layer('base')

        pdb.gimp_edit_copy(layer)
        selection = pdb.gimp_edit_paste(rot_base, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, -x_off, -y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(rot_base, False)
        pdb.plug_in_rotate(rotation, selection, 1, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, selection.width-x_off, -y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(rot_base, False)
        pdb.plug_in_rotate(rotation, selection, 2, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, selection.width-x_off, selection.height-y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(rot_base, False)
        pdb.plug_in_rotate(rotation, selection, 3, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, -x_off, selection.height-y_off)
        pdb.gimp_floating_sel_anchor(selection)

        pdb.gimp_edit_copy(rot_base)

        selection = pdb.gimp_edit_paste(layer_tile, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, -x_off, -y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(layer_tile, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, selection.width-x_off, -y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(layer_tile, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, selection.width-x_off, selection.height-y_off)
        pdb.gimp_floating_sel_anchor(selection)

        selection = pdb.gimp_edit_paste(layer_tile, False)
        x_off, y_off = selection.offsets
        pdb.gimp_layer_translate(selection, -x_off, selection.height-y_off)
        pdb.gimp_floating_sel_anchor(selection)

        pdb.gimp_drawable_offset(layer_tile, True, False, image.width, image.height)

        if not pdb.gimp_item_get_visible(layer):
            pdb.gimp_item_set_visible(layer_tile, False)

    pdb.gimp_display_new(canvas)
    pdb.gimp_displays_flush()

register(
    'reflection_tile',
    'Tiles an image to 16x the size with reflections',
    'Tiles an image to 16x the size with reflections',
    'Shoeboxam',
    'Shoeboxam',
    '2017',
    "Reflection Tile",
    "*",
    [
		(PF_IMAGE, "image",       "Input image", None),
        (PF_DRAWABLE, "drawable", "Input drawable", None)
	],
    [],
	reflection_tile,
	menu="<Image>/Filters/Custom")

main()