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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 #####
# <pep8 compliant>
import bpy
import bmesh
def defSelectFlippedUvs(self, context):
bm = bmesh.from_edit_mesh(bpy.context.active_object.data)
bpy.context.scene.tool_settings.use_uv_select_sync = True
uvLayer = bm.loops.layers.uv.verify()
for face in bm.faces:
sum_edges = 0
for i in range(3):
uv_A = face.loops[i][uvLayer].uv
uv_B = face.loops[(i+1)%3][uvLayer].uv
sum_edges += uv_B.cross(uv_A)
if sum_edges > 0:
face.select_set(True)
bmesh.update_edit_mesh(bpy.context.object.data)
class selectFlippedUvs(bpy.types.Operator):
"""Copy Uv Island"""
bl_idname = "mesh.select_flipped_uvs"
bl_label = "Select Flipped Uvs"
bl_options = {"REGISTER", "UNDO"}
@classmethod
def poll(cls, context):
return (context.active_object is not None and
context.active_object.type == 'MESH' and
context.active_object.mode == "EDIT")
def execute(self, context):
defSelectFlippedUvs(self, context)
return {'FINISHED'}
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