253 lines
7.8 KiB
Python
253 lines
7.8 KiB
Python
#!BPY
|
|
"""
|
|
Name: 'Follow Active (quads)'
|
|
Blender: 242
|
|
Group: 'UVCalculation'
|
|
Tooltip: 'Follow from active quads.'
|
|
"""
|
|
__author__ = "Campbell Barton"
|
|
__url__ = ("blender", "blenderartists.org")
|
|
__version__ = "1.0 2006/02/07"
|
|
|
|
__bpydoc__ = """\
|
|
This script sets the UV mapping and image of selected faces from adjacent unselected faces.
|
|
|
|
for full docs see...
|
|
http://mediawiki.blender.org/index.php/Scripts/Manual/UV_Calculate/Follow_active_quads
|
|
"""
|
|
|
|
# ***** BEGIN GPL LICENSE BLOCK *****
|
|
#
|
|
# Script copyright (C) Campbell J 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 *
|
|
import bpy
|
|
import BPyMesh
|
|
|
|
def extend():
|
|
sce = bpy.data.scenes.active
|
|
ob = sce.objects.active
|
|
|
|
# print ob, ob.type
|
|
if ob == None or ob.type != 'Mesh':
|
|
Draw.PupMenu('ERROR: No mesh object.')
|
|
return
|
|
|
|
# Toggle Edit mode
|
|
is_editmode = Window.EditMode()
|
|
if is_editmode:
|
|
Window.EditMode(0)
|
|
|
|
me = ob.getData(mesh=1)
|
|
me_verts = me.verts
|
|
|
|
# 0:normal extend, 1:edge length
|
|
EXTEND_MODE = Draw.PupMenu("Use Face Area%t|Loop Average%x2|None%x0")
|
|
if EXTEND_MODE == -1:
|
|
return
|
|
|
|
Window.WaitCursor(1)
|
|
t = sys.time()
|
|
edge_average_lengths = {}
|
|
|
|
OTHER_INDEX = 2,3,0,1
|
|
FAST_INDICIES = 0,2,1,3 # order is faster
|
|
def extend_uvs(face_source, face_target, edge_key):
|
|
'''
|
|
Takes 2 faces,
|
|
Projects its extends its UV coords onto the face next to it.
|
|
Both faces must share an edge.
|
|
'''
|
|
|
|
def face_edge_vs(vi):
|
|
# assunme a quad
|
|
return [(vi[0], vi[1]), (vi[1], vi[2]), (vi[2], vi[3]), (vi[3], vi[0])]
|
|
|
|
uvs_source = face_source.uv
|
|
uvs_target = face_target.uv
|
|
|
|
vidx_source = [v.index for v in face_source]
|
|
vidx_target = [v.index for v in face_target]
|
|
|
|
# vertex index is the key, uv is the value
|
|
uvs_vhash_source = dict( [ (vindex, uvs_source[i]) for i, vindex in enumerate(vidx_source)] )
|
|
uvs_vhash_target = dict( [ (vindex, uvs_target[i]) for i, vindex in enumerate(vidx_target)] )
|
|
|
|
edge_idxs_source = face_edge_vs(vidx_source)
|
|
edge_idxs_target = face_edge_vs(vidx_target)
|
|
|
|
source_matching_edge = -1
|
|
target_matching_edge = -1
|
|
|
|
edge_key_swap = edge_key[1], edge_key[0]
|
|
|
|
try: source_matching_edge = edge_idxs_source.index(edge_key)
|
|
except: source_matching_edge = edge_idxs_source.index(edge_key_swap)
|
|
try: target_matching_edge = edge_idxs_target.index(edge_key)
|
|
except: target_matching_edge = edge_idxs_target.index(edge_key_swap)
|
|
|
|
|
|
|
|
edgepair_inner_source = edge_idxs_source[source_matching_edge]
|
|
edgepair_inner_target = edge_idxs_target[target_matching_edge]
|
|
edgepair_outer_source = edge_idxs_source[OTHER_INDEX[source_matching_edge]]
|
|
edgepair_outer_target = edge_idxs_target[OTHER_INDEX[target_matching_edge]]
|
|
|
|
if edge_idxs_source[source_matching_edge] == edge_idxs_target[target_matching_edge]:
|
|
iA= 0; iB= 1 # Flipped, most common
|
|
else: # The normals of these faces must be different
|
|
iA= 1; iB= 0
|
|
|
|
|
|
# Set the target UV's touching source face, no tricky calc needed,
|
|
uvs_vhash_target[edgepair_inner_target[0]][:] = uvs_vhash_source[edgepair_inner_source[iA]]
|
|
uvs_vhash_target[edgepair_inner_target[1]][:] = uvs_vhash_source[edgepair_inner_source[iB]]
|
|
|
|
|
|
# Set the 2 UV's on the target face that are not touching
|
|
# for this we need to do basic expaning on the source faces UV's
|
|
if EXTEND_MODE == 2:
|
|
|
|
try: # divide by zero is possible
|
|
'''
|
|
measure the length of each face from the middle of each edge to the opposite
|
|
allong the axis we are copying, use this
|
|
'''
|
|
i1a= edgepair_outer_target[iB]
|
|
i2a= edgepair_inner_target[iA]
|
|
if i1a>i2a: i1a, i2a = i2a, i1a
|
|
|
|
i1b= edgepair_outer_source[iB]
|
|
i2b= edgepair_inner_source[iA]
|
|
if i1b>i2b: i1b, i2b = i2b, i1b
|
|
# print edge_average_lengths
|
|
factor = edge_average_lengths[i1a, i2a][0] / edge_average_lengths[i1b, i2b][0]
|
|
except:
|
|
# Div By Zero?
|
|
factor = 1.0
|
|
|
|
uvs_vhash_target[edgepair_outer_target[iB]][:] = uvs_vhash_source[edgepair_inner_source[0]] +factor * (uvs_vhash_source[edgepair_inner_source[0]] - uvs_vhash_source[edgepair_outer_source[1]])
|
|
uvs_vhash_target[edgepair_outer_target[iA]][:] = uvs_vhash_source[edgepair_inner_source[1]] +factor * (uvs_vhash_source[edgepair_inner_source[1]] - uvs_vhash_source[edgepair_outer_source[0]])
|
|
|
|
else:
|
|
# same as above but with no factor
|
|
uvs_vhash_target[edgepair_outer_target[iB]][:] = uvs_vhash_source[edgepair_inner_source[0]] + (uvs_vhash_source[edgepair_inner_source[0]] - uvs_vhash_source[edgepair_outer_source[1]])
|
|
uvs_vhash_target[edgepair_outer_target[iA]][:] = uvs_vhash_source[edgepair_inner_source[1]] + (uvs_vhash_source[edgepair_inner_source[1]] - uvs_vhash_source[edgepair_outer_source[0]])
|
|
|
|
if not me.faceUV:
|
|
Draw.PupMenu('ERROR: Mesh has no face UV coords.')
|
|
return
|
|
|
|
face_act = me.activeFace
|
|
if face_act == -1:
|
|
Draw.PupMenu('ERROR: No active face')
|
|
return
|
|
|
|
face_sel= [f for f in me.faces if len(f) == 4 and f.sel]
|
|
|
|
face_act_local_index = -1
|
|
for i, f in enumerate(face_sel):
|
|
if f.index == face_act:
|
|
face_act_local_index = i
|
|
break
|
|
|
|
if face_act_local_index == -1:
|
|
Draw.PupMenu('ERROR: Active face not selected')
|
|
return
|
|
|
|
|
|
|
|
# Modes
|
|
# 0 unsearched
|
|
# 1:mapped, use search from this face. - removed!!
|
|
# 2:all siblings have been searched. dont search again.
|
|
face_modes = [0] * len(face_sel)
|
|
face_modes[face_act_local_index] = 1 # extend UV's from this face.
|
|
|
|
|
|
# Edge connectivty
|
|
edge_faces = {}
|
|
for i, f in enumerate(face_sel):
|
|
for edkey in f.edge_keys:
|
|
try: edge_faces[edkey].append(i)
|
|
except: edge_faces[edkey] = [i]
|
|
|
|
SEAM = Mesh.EdgeFlags.SEAM
|
|
|
|
if EXTEND_MODE == 2:
|
|
edge_loops = BPyMesh.getFaceLoopEdges(face_sel, [ed.key for ed in me.edges if ed.flag & SEAM] )
|
|
me_verts = me.verts
|
|
for loop in edge_loops:
|
|
looplen = [0.0]
|
|
for ed in loop:
|
|
edge_average_lengths[ed] = looplen
|
|
looplen[0] += (me_verts[ed[0]].co - me_verts[ed[1]].co).length
|
|
looplen[0] = looplen[0] / len(loop)
|
|
|
|
|
|
|
|
# remove seams, so we dont map accross seams.
|
|
for ed in me.edges:
|
|
if ed.flag & SEAM:
|
|
# remove the edge pair if we can
|
|
try: del edge_faces[ed.key]
|
|
except: pass
|
|
# Done finding seams
|
|
|
|
|
|
# face connectivity - faces around each face
|
|
# only store a list of indicies for each face.
|
|
face_faces = [[] for i in xrange(len(face_sel))]
|
|
|
|
for edge_key, faces in edge_faces.iteritems():
|
|
if len(faces) == 2: # Only do edges with 2 face users for now
|
|
face_faces[faces[0]].append((faces[1], edge_key))
|
|
face_faces[faces[1]].append((faces[0], edge_key))
|
|
|
|
|
|
# Now we know what face is connected to what other face, map them by connectivity
|
|
ok = True
|
|
while ok:
|
|
ok = False
|
|
for i in xrange(len(face_sel)):
|
|
if face_modes[i] == 1: # searchable
|
|
for f_sibling, edge_key in face_faces[i]:
|
|
if face_modes[f_sibling] == 0:
|
|
face_modes[f_sibling] = 1 # mapped and search from.
|
|
extend_uvs(face_sel[i], face_sel[f_sibling], edge_key)
|
|
face_modes[i] = 1 # we can map from this one now.
|
|
ok= True # keep searching
|
|
|
|
face_modes[i] = 2 # dont search again
|
|
print sys.time() - t
|
|
|
|
if is_editmode:
|
|
Window.EditMode(1)
|
|
else:
|
|
me.update()
|
|
|
|
Window.RedrawAll()
|
|
Window.WaitCursor(0)
|
|
|
|
if __name__ == '__main__':
|
|
extend()
|
|
|
|
|