[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [25418] trunk/blender/release/scripts/io/ uvcalc_follow_active.py: UV script from blender 2.4x, copied as is.
Campbell Barton
ideasman42 at gmail.com
Wed Dec 16 22:22:14 CET 2009
Revision: 25418
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=25418
Author: campbellbarton
Date: 2009-12-16 22:22:14 +0100 (Wed, 16 Dec 2009)
Log Message:
-----------
UV script from blender 2.4x, copied as is. (update in next commit)
Added Paths:
-----------
trunk/blender/release/scripts/io/uvcalc_follow_active.py
Copied: trunk/blender/release/scripts/io/uvcalc_follow_active.py (from rev 25417, branches/blender2.4/release/scripts/uvcalc_follow_active_coords.py)
===================================================================
--- trunk/blender/release/scripts/io/uvcalc_follow_active.py (rev 0)
+++ trunk/blender/release/scripts/io/uvcalc_follow_active.py 2009-12-16 21:22:14 UTC (rev 25418)
@@ -0,0 +1,254 @@
+#!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(EXTEND_MODE,ob):
+ if EXTEND_MODE == -1:
+ return
+ me = ob.getData(mesh=1)
+ me_verts = me.verts
+ # Toggle Edit mode
+ is_editmode = Window.EditMode()
+ if is_editmode:
+ Window.EditMode(0)
+ 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:
+ me.faceUV= True
+
+ 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)
+
+
+def main():
+ 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
+
+
+
+ # 0:normal extend, 1:edge length
+ EXTEND_MODE = Draw.PupMenu("Use Face Area%t|Loop Average%x2|None%x0")
+ extend(EXTEND_MODE,ob)
+
+if __name__ == '__main__':
+ main()
+
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