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# ##### 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__ = "4.3.1"
__date__ = "6 June 2017"
import bpy
import bmesh
from bpy.props import (
BoolProperty,
EnumProperty,
FloatProperty,
)
from . import muv_common
class MUV_UnwrapConstraint(bpy.types.Operator):
"""
Operation class: Unwrap with constrain UV coordinate
"""
bl_idname = "uv.muv_unwrap_constraint"
bl_label = "Unwrap Constraint"
bl_description = "Unwrap while keeping uv coordinate"
bl_options = {'REGISTER', 'UNDO'}
# property for original unwrap
method = EnumProperty(
name="Method",
description="Unwrapping method",
items=[
('ANGLE_BASED', 'Angle Based', 'Angle Based'),
('CONFORMAL', 'Conformal', 'Conformal')
],
default='ANGLE_BASED')
fill_holes = BoolProperty(
name="Fill Holes",
description="Virtual fill holes in meshes before unwrapping",
default=True)
correct_aspect = BoolProperty(
name="Correct Aspect",
description="Map UVs taking image aspect ratio into account",
default=True)
use_subsurf_data = BoolProperty(
name="Use Subsurf Modifier",
description="""Map UVs taking vertex position after subsurf
into account""",
default=False)
margin = FloatProperty(
name="Margin",
description="Space between islands",
max=1.0,
min=0.0,
default=0.001)
# property for this operation
u_const = BoolProperty(
name="U-Constraint",
description="Keep UV U-axis coordinate",
default=False)
v_const = BoolProperty(
name="V-Constraint",
description="Keep UV V-axis coordinate",
default=False)
def execute(self, _):
obj = bpy.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()
# get original UV coordinate
faces = [f for f in bm.faces if f.select]
uv_list = []
for f in faces:
uvs = [l[uv_layer].uv.copy() for l in f.loops]
uv_list.append(uvs)
# unwrap
bpy.ops.uv.unwrap(
method=self.method,
fill_holes=self.fill_holes,
correct_aspect=self.correct_aspect,
use_subsurf_data=self.use_subsurf_data,
margin=self.margin)
# when U/V-Constraint is checked, revert original coordinate
for f, uvs in zip(faces, uv_list):
for l, uv in zip(f.loops, uvs):
if self.u_const:
l[uv_layer].uv.x = uv.x
if self.v_const:
l[uv_layer].uv.y = uv.y
# update mesh
bmesh.update_edit_mesh(obj.data)
return {'FINISHED'}
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