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# SPDX-License-Identifier: GPL-2.0-or-later
# This ASE conversion uses code from Marcos A Ojeda http://generic.cx/
#
# With notes from
# http://iamacamera.org/default.aspx?id=109 by Carl Camera and
# http://www.colourlovers.com/ase.phps by Chris Williams
"""
This script imports a ASE Palette to Blender.
Usage:
Run this script from "File->Import" menu and then load the desired ASE file.
"""
import bpy
import os
import struct
def parse_chunk(fd):
chunk_type = fd.read(2)
while chunk_type:
if chunk_type == b'\x00\x01':
# a single color
o = dict_for_chunk(fd)
yield o
elif chunk_type == b'\xC0\x01':
# folder/palette
o = dict_for_chunk(fd)
o['swatches'] = [x for x in colors(fd)]
yield o
elif chunk_type == b'\xC0\x02':
# this signals the end of a folder
assert fd.read(4) == b'\x00\x00\x00\x00'
pass
else:
# the file is malformed?
assert chunk_type in [
b'\xC0\x01', b'\x00\x01', b'\xC0\x02', b'\x00\x02']
pass
chunk_type = fd.read(2)
def colors(fd):
chunk_type = fd.read(2)
while chunk_type in [b'\x00\x01', b'\x00\x02']:
d = dict_for_chunk(fd)
yield d
chunk_type = fd.read(2)
fd.seek(-2, os.SEEK_CUR)
def dict_for_chunk(fd):
chunk_length = struct.unpack(">I", fd.read(4))[0]
data = fd.read(chunk_length)
title_length = (struct.unpack(">H", data[:2])[0]) * 2
title = data[2:2 + title_length].decode("utf-16be").strip('\0')
color_data = data[2 + title_length:]
output = {
'name': str(title),
'type': 'Color Group' # default to color group
}
if color_data:
fmt = {b'RGB': '!fff', b'Gray': '!f', b'CMYK': '!ffff', b'LAB': '!fff'}
color_mode = struct.unpack("!4s", color_data[:4])[0].strip()
color_values = list(struct.unpack(fmt[color_mode], color_data[4:-2]))
color_types = ['Global', 'Spot', 'Process']
swatch_type_index = struct.unpack(">h", color_data[-2:])[0]
swatch_type = color_types[swatch_type_index]
output.update({
'data': {
'mode': color_mode.decode('utf-8'),
'values': color_values
},
'type': str(swatch_type)
})
return output
def parse(filename):
with open(filename, "rb") as data:
header, v_major, v_minor, chunk_count = struct.unpack("!4sHHI", data.read(12))
assert header == b"ASEF"
assert (v_major, v_minor) == (1, 0)
return [c for c in parse_chunk(data)]
def load(context, filepath):
output = parse(filepath)
(path, filename) = os.path.split(filepath)
pal = None
for elm in output:
valid = False
data = elm['data']
color = [0, 0, 0]
val = data['values']
if data['mode'] == 'RGB':
valid = True
color[0] = val[0]
color[1] = val[1]
color[2] = val[2]
elif data['mode'] == 'Gray':
valid = True
color[0] = val[0]
color[1] = val[0]
color[2] = val[0]
elif data['mode'] == 'CMYK':
valid = True
color[0] = (1.0 - val[0]) * (1.0 - val[3])
color[1] = (1.0 - val[1]) * (1.0 - val[3])
color[2] = (1.0 - val[2]) * (1.0 - val[3])
# Create palette color
if valid:
# Create Palette
if pal is None:
pal = bpy.data.palettes.new(name=filename)
# Create Color
col = pal.colors.new()
col.color[0] = color[0]
col.color[1] = color[1]
col.color[2] = color[2]
return {'FINISHED'}
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