forked from bartvdbraak/blender
102 lines
2.8 KiB
Python
102 lines
2.8 KiB
Python
#!BPY
|
|
"""
|
|
Name: 'Seams from Islands'
|
|
Blender: 246
|
|
Group: 'UV'
|
|
Tooltip: 'Add seams onto the mesh at the bounds of UV islands'
|
|
"""
|
|
|
|
# ***** BEGIN GPL LICENSE BLOCK *****
|
|
#
|
|
# Script copyright (C) Campbell Barton
|
|
#
|
|
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
#
|
|
# ***** END GPL LICENCE BLOCK *****
|
|
# --------------------------------------------------------------------------
|
|
|
|
from Blender import Scene, Mesh, Window, sys
|
|
import BPyMessages
|
|
|
|
def seams_from_islands(me):
|
|
# This function runs out of editmode with a mesh
|
|
# error cases are alredy checked for
|
|
|
|
# next intex
|
|
wrap_q = [1,2,3,0]
|
|
wrap_t = [1,2,0]
|
|
edge_uvs = {}
|
|
for f in me.faces:
|
|
f_uv = [(round(uv.x, 6), round(uv.y, 6)) for uv in f.uv]
|
|
f_vi = [v.index for v in f]
|
|
for i, key in enumerate(f.edge_keys):
|
|
if len(f)==3:
|
|
uv1, uv2 = f_uv[i], f_uv[wrap_t[i]]
|
|
vi1, vi2 = f_vi[i], f_vi[wrap_t[i]]
|
|
else: # quad
|
|
uv1, uv2 = f_uv[i], f_uv[wrap_q[i]]
|
|
vi1, vi2 = f_vi[i], f_vi[wrap_q[i]]
|
|
|
|
if vi1 > vi2: uv1,uv2 = uv2,uv1
|
|
|
|
edge_uvs.setdefault(key, []).append((uv1, uv2))
|
|
|
|
# add seams
|
|
SEAM = Mesh.EdgeFlags.SEAM
|
|
for ed in me.edges:
|
|
try: # the edge might not be in a face
|
|
if len(set(edge_uvs[ed.key])) > 1:
|
|
ed.flag |= SEAM
|
|
except:
|
|
pass
|
|
|
|
def main():
|
|
|
|
# Gets the current scene, there can be many scenes in 1 blend file.
|
|
sce = Scene.GetCurrent()
|
|
|
|
# Get the active object, there can only ever be 1
|
|
# and the active object is always the editmode object.
|
|
ob_act = sce.objects.active
|
|
me = ob_act.getData(mesh=1)
|
|
|
|
if not ob_act or ob_act.type != 'Mesh' or not me.faceUV:
|
|
BPyMessages.Error_NoMeshUvActive()
|
|
return
|
|
|
|
# Saves the editmode state and go's out of
|
|
# editmode if its enabled, we cant make
|
|
# changes to the mesh data while in editmode.
|
|
is_editmode = Window.EditMode()
|
|
if is_editmode: Window.EditMode(0)
|
|
|
|
Window.WaitCursor(1)
|
|
|
|
t = sys.time()
|
|
|
|
# Run the mesh editing function
|
|
seams_from_islands(me)
|
|
|
|
if is_editmode: Window.EditMode(1)
|
|
|
|
# Timing the script is a good way to be aware on any speed hits when scripting
|
|
print 'UV Seams from Islands finished in %.2f seconds' % (sys.time()-t)
|
|
Window.WaitCursor(0)
|
|
|
|
|
|
# This lets you can import the script without running it
|
|
if __name__ == '__main__':
|
|
main()
|