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# <pep8-80 compliant>
# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
__author__ = "Nutti <nutti.metro@gmail.com>"
__status__ = "production"
__version__ = "5.2"
__date__ = "17 Nov 2018"
import bpy
import bmesh
from bpy.props import StringProperty, EnumProperty, BoolProperty
from mathutils import Vector
from .. import common
__all__ = [
'Properties',
'Operator',
]
def is_valid_context(context):
obj = context.object
# only edit mode is allowed to execute
if obj is None:
return False
if obj.type != 'MESH':
return False
if context.object.mode != 'EDIT':
return False
# only 'VIEW_3D' space is allowed to execute
for space in context.area.spaces:
if space.type == 'VIEW_3D':
break
else:
return False
return True
class Properties:
@classmethod
def init_props(cls, scene):
def get_loaded_texture_name(_, __):
items = [(key, key, "") for key in bpy.data.images.keys()]
items.append(("None", "None", ""))
return items
scene.muv_preserve_uv_aspect_enabled = BoolProperty(
name="Preserve UV Aspect Enabled",
description="Preserve UV Aspect is enabled",
default=False
)
scene.muv_preserve_uv_aspect_tex_image = EnumProperty(
name="Image",
description="Texture Image",
items=get_loaded_texture_name
)
scene.muv_preserve_uv_aspect_origin = EnumProperty(
name="Origin",
description="Aspect Origin",
items=[
('CENTER', 'Center', 'Center'),
('LEFT_TOP', 'Left Top', 'Left Bottom'),
('LEFT_CENTER', 'Left Center', 'Left Center'),
('LEFT_BOTTOM', 'Left Bottom', 'Left Bottom'),
('CENTER_TOP', 'Center Top', 'Center Top'),
('CENTER_BOTTOM', 'Center Bottom', 'Center Bottom'),
('RIGHT_TOP', 'Right Top', 'Right Top'),
('RIGHT_CENTER', 'Right Center', 'Right Center'),
('RIGHT_BOTTOM', 'Right Bottom', 'Right Bottom')
],
default="CENTER"
)
@classmethod
def del_props(cls, scene):
del scene.muv_preserve_uv_aspect_enabled
del scene.muv_preserve_uv_aspect_tex_image
del scene.muv_preserve_uv_aspect_origin
class Operator(bpy.types.Operator):
"""
Operation class: Preserve UV Aspect
"""
bl_idname = "uv.muv_preserve_uv_aspect_operator"
bl_label = "Preserve UV Aspect"
bl_description = "Choose Image"
bl_options = {'REGISTER', 'UNDO'}
dest_img_name = StringProperty(options={'HIDDEN'})
origin = EnumProperty(
name="Origin",
description="Aspect Origin",
items=[
('CENTER', 'Center', 'Center'),
('LEFT_TOP', 'Left Top', 'Left Bottom'),
('LEFT_CENTER', 'Left Center', 'Left Center'),
('LEFT_BOTTOM', 'Left Bottom', 'Left Bottom'),
('CENTER_TOP', 'Center Top', 'Center Top'),
('CENTER_BOTTOM', 'Center Bottom', 'Center Bottom'),
('RIGHT_TOP', 'Right Top', 'Right Top'),
('RIGHT_CENTER', 'Right Center', 'Right Center'),
('RIGHT_BOTTOM', 'Right Bottom', 'Right Bottom')
],
default="CENTER"
)
@classmethod
def poll(cls, context):
# we can not get area/space/region from console
if common.is_console_mode():
return True
return is_valid_context(context)
def execute(self, context):
# Note: the current system only works if the
# f[tex_layer].image doesn't return None
# which will happen in certain cases
obj = context.active_object
bm = bmesh.from_edit_mesh(obj.data)
if common.check_version(2, 73, 0) >= 0:
bm.faces.ensure_lookup_table()
if not bm.loops.layers.uv:
self.report({'WARNING'}, "Object must have more than one UV map")
return {'CANCELLED'}
uv_layer = bm.loops.layers.uv.verify()
tex_layer = bm.faces.layers.tex.verify()
sel_faces = [f for f in bm.faces if f.select]
dest_img = bpy.data.images[self.dest_img_name]
info = {}
for f in sel_faces:
if not f[tex_layer].image in info.keys():
info[f[tex_layer].image] = {}
info[f[tex_layer].image]['faces'] = []
info[f[tex_layer].image]['faces'].append(f)
for img in info:
if img is None:
continue
src_img = img
ratio = Vector((
dest_img.size[0] / src_img.size[0],
dest_img.size[1] / src_img.size[1]))
if self.origin == 'CENTER':
origin = Vector((0.0, 0.0))
num = 0
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin = origin + uv
num = num + 1
origin = origin / num
elif self.origin == 'LEFT_TOP':
origin = Vector((100000.0, -100000.0))
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = min(origin.x, uv.x)
origin.y = max(origin.y, uv.y)
elif self.origin == 'LEFT_CENTER':
origin = Vector((100000.0, 0.0))
num = 0
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = min(origin.x, uv.x)
origin.y = origin.y + uv.y
num = num + 1
origin.y = origin.y / num
elif self.origin == 'LEFT_BOTTOM':
origin = Vector((100000.0, 100000.0))
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = min(origin.x, uv.x)
origin.y = min(origin.y, uv.y)
elif self.origin == 'CENTER_TOP':
origin = Vector((0.0, -100000.0))
num = 0
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = origin.x + uv.x
origin.y = max(origin.y, uv.y)
num = num + 1
origin.x = origin.x / num
elif self.origin == 'CENTER_BOTTOM':
origin = Vector((0.0, 100000.0))
num = 0
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = origin.x + uv.x
origin.y = min(origin.y, uv.y)
num = num + 1
origin.x = origin.x / num
elif self.origin == 'RIGHT_TOP':
origin = Vector((-100000.0, -100000.0))
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = max(origin.x, uv.x)
origin.y = max(origin.y, uv.y)
elif self.origin == 'RIGHT_CENTER':
origin = Vector((-100000.0, 0.0))
num = 0
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = max(origin.x, uv.x)
origin.y = origin.y + uv.y
num = num + 1
origin.y = origin.y / num
elif self.origin == 'RIGHT_BOTTOM':
origin = Vector((-100000.0, 100000.0))
for f in info[img]['faces']:
for l in f.loops:
uv = l[uv_layer].uv
origin.x = max(origin.x, uv.x)
origin.y = min(origin.y, uv.y)
info[img]['ratio'] = ratio
info[img]['origin'] = origin
for img in info:
if img is None:
continue
for f in info[img]['faces']:
f[tex_layer].image = dest_img
for l in f.loops:
uv = l[uv_layer].uv
origin = info[img]['origin']
ratio = info[img]['ratio']
diff = uv - origin
diff.x = diff.x / ratio.x
diff.y = diff.y / ratio.y
uv.x = origin.x + diff.x
uv.y = origin.y + diff.y
l[uv_layer].uv = uv
bmesh.update_edit_mesh(obj.data)
return {'FINISHED'}
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