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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__ = "imdjs, Nutti <nutti.metro@gmail.com>"
__status__ = "production"
__version__ = "5.2"
__date__ = "17 Nov 2018"
from math import sin, cos, pi
from mathutils import Vector
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
def get_uv_layer(ops_obj, bm, assign_uvmap):
# get UV layer
if not bm.loops.layers.uv:
if assign_uvmap:
bm.loops.layers.uv.new()
else:
ops_obj.report({'WARNING'},
"Object must have more than one UV map")
return None
uv_layer = bm.loops.layers.uv.verify()
return uv_layer
def apply_box_map(bm, uv_layer, size, offset, rotation, tex_aspect):
scale = 1.0 / size
sx = 1.0 * scale
sy = 1.0 * scale
sz = 1.0 * scale
ofx = offset[0]
ofy = offset[1]
ofz = offset[2]
rx = rotation[0] * pi / 180.0
ry = rotation[1] * pi / 180.0
rz = rotation[2] * pi / 180.0
aspect = tex_aspect
sel_faces = [f for f in bm.faces if f.select]
# update UV coordinate
for f in sel_faces:
n = f.normal
for l in f.loops:
co = l.vert.co
x = co.x * sx
y = co.y * sy
z = co.z * sz
# X-plane
if abs(n[0]) >= abs(n[1]) and abs(n[0]) >= abs(n[2]):
if n[0] >= 0.0:
u = (y - ofy) * cos(rx) + (z - ofz) * sin(rx)
v = -(y * aspect - ofy) * sin(rx) + \
(z * aspect - ofz) * cos(rx)
else:
u = -(y - ofy) * cos(rx) + (z - ofz) * sin(rx)
v = (y * aspect - ofy) * sin(rx) + \
(z * aspect - ofz) * cos(rx)
# Y-plane
elif abs(n[1]) >= abs(n[0]) and abs(n[1]) >= abs(n[2]):
if n[1] >= 0.0:
u = -(x - ofx) * cos(ry) + (z - ofz) * sin(ry)
v = (x * aspect - ofx) * sin(ry) + \
(z * aspect - ofz) * cos(ry)
else:
u = (x - ofx) * cos(ry) + (z - ofz) * sin(ry)
v = -(x * aspect - ofx) * sin(ry) + \
(z * aspect - ofz) * cos(ry)
# Z-plane
else:
if n[2] >= 0.0:
u = (x - ofx) * cos(rz) + (y - ofy) * sin(rz)
v = -(x * aspect - ofx) * sin(rz) + \
(y * aspect - ofy) * cos(rz)
else:
u = -(x - ofx) * cos(rz) - (y + ofy) * sin(rz)
v = -(x * aspect + ofx) * sin(rz) + \
(y * aspect - ofy) * cos(rz)
l[uv_layer].uv = Vector((u, v))
def apply_planer_map(bm, uv_layer, size, offset, rotation, tex_aspect):
scale = 1.0 / size
sx = 1.0 * scale
sy = 1.0 * scale
ofx = offset[0]
ofy = offset[1]
rz = rotation * pi / 180.0
aspect = tex_aspect
sel_faces = [f for f in bm.faces if f.select]
# calculate average of normal
n_ave = Vector((0.0, 0.0, 0.0))
for f in sel_faces:
n_ave = n_ave + f.normal
q = n_ave.rotation_difference(Vector((0.0, 0.0, 1.0)))
# update UV coordinate
for f in sel_faces:
for l in f.loops:
co = q @ l.vert.co
x = co.x * sx
y = co.y * sy
u = x * cos(rz) - y * sin(rz) + ofx
v = -x * aspect * sin(rz) - y * aspect * cos(rz) + ofy
l[uv_layer].uv = Vector((u, v))
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