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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__ = "4.4"
__date__ = "2 Aug 2017"
import bpy
import bmesh
from bpy.props import StringProperty
from mathutils import Vector
from . import muv_common
class MUV_PreserveUVAspect(bpy.types.Operator):
"""
Operation class: Preserve UV Aspect
"""
bl_idname = "uv.muv_preserve_uv_aspect"
bl_label = "Preserve UV Aspect"
bl_description = "Choose Image"
bl_options = {'REGISTER', 'UNDO'}
dest_img_name = StringProperty(options={'HIDDEN'})
@classmethod
def poll(cls, context):
obj = context.active_object
return obj and obj.type == 'MESH'
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 muv_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]))
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(uv.x, origin.x)
origin.y = min(uv.y, origin.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
diff = uv - info[img]['origin']
diff.x = diff.x / info[img]['ratio'].x
diff.y = diff.y / info[img]['ratio'].y
uv.x = origin.x + diff.x
uv.y = origin.y + diff.y
bmesh.update_edit_mesh(obj.data)
return {'FINISHED'}
class MUV_PreserveUVAspectMenu(bpy.types.Menu):
"""
Menu class: Preserve UV Aspect
"""
bl_idname = "uv.muv_preserve_uv_aspect_menu"
bl_label = "Preserve UV Aspect"
bl_description = "Preserve UV Aspect"
def draw(self, _):
layout = self.layout
# create sub menu
for key in bpy.data.images.keys():
layout.operator(
MUV_PreserveUVAspect.bl_idname,
text=key, icon="IMAGE_COL").dest_img_name = key
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