Revision: 20389
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=20389
Author: campbellbarton
Date: 2009-05-25 02:30:06 +0200 (Mon, 25 May 2009)
Log Message:
-----------
utility script for cleaning ipos animation curves,
used in YoFrankie to reduce file size for large actions
Added Paths:
-----------
trunk/blender/release/scripts/animation_clean.py
Added: trunk/blender/release/scripts/animation_clean.py
===================================================================
--- trunk/blender/release/scripts/animation_clean.py
(rev 0)
+++ trunk/blender/release/scripts/animation_clean.py 2009-05-25 00:30:06 UTC
(rev 20389)
@@ -0,0 +1,192 @@
+#!BPY
+
+"""
+Name: 'Clean Animation Curves'
+Blender: 249
+Group: 'Animation'
+Tooltip: 'Remove unused keyframes for ipo curves'
+"""
+
+# ***** BEGIN GPL LICENSE BLOCK *****
+#
+# Copyright (C) 2008-2009: Blender Foundation
+#
+# 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,
+# --------------------------------------------------------------------------
+
+import bpy
+from Blender import IpoCurve, Draw, Window
+
+def clean_ipos(ipos):
+ eul = 0.001
+
+ def isflat(vec):
+ prev_y = vec[0][1]
+ mid_y = vec[1][1]
+ next_y = vec[2][1]
+
+ # flat status for prev and next
+ return abs(mid_y-prev_y) < eul, abs(mid_y-next_y) < eul
+
+
+
+ X=0
+ Y=1
+ PREV=0
+ MID=1
+ NEXT=2
+
+ LEFT = 0
+ RIGHT = 1
+
+ TOT = 0
+ TOTBEZ = 0
+ # for ipo in bpy.data.ipos:
+ for ipo in ipos:
+ if ipo.lib:
+ continue
+ # print ipo
+ for icu in ipo:
+ interp = icu.interpolation
+ extend = icu.extend
+
+ bezierPoints = icu.bezierPoints
+ bezierVecs = [bez.vec for bez in bezierPoints]
+
+ l = len(bezierPoints)
+
+ TOTBEZ += l
+
+ # our aim is to simplify this ipo as much as possible!
+ if interp == IpoCurve.InterpTypes.BEZIER or interp ==
interp == IpoCurve.InterpTypes.LINEAR:
+ #print "Not yet supported"
+
+ if interp == IpoCurve.InterpTypes.BEZIER:
+ flats = [isflat(bez) for bez in
bezierVecs]
+ else:
+ # A bit of a waste but fake the
locations for these so they will always be flats
+ # IS better then too much duplicate
code.
+ flats = [(True, True)] * l
+ for v in bezierVecs:
+ v[PREV][Y] = v[NEXT][Y] =
v[MID][Y]
+
+
+ # remove middle points
+ if l>2:
+ done_nothing = False
+
+ while not done_nothing and
len(bezierVecs) > 2:
+ done_nothing = True
+ i = l-2
+
+ while i > 0:
+ #print i
+ #print i,
len(bezierVecs)
+ if
flats[i]==(True,True) and flats[i-1][RIGHT] and flats[i+1][LEFT]:
+
+ if
abs(bezierVecs[i][MID][Y] - bezierVecs[i-1][MID][Y]) < eul and
abs(bezierVecs[i][MID][Y] - bezierVecs[i+1][MID][Y]) < eul:
+
done_nothing = False
+
+ del
flats[i]
+ del
bezierVecs[i]
+
icu.delBezier(i)
+ TOT += 1
+ l-=1
+ i-=1
+
+ # remove endpoints
+ if extend == IpoCurve.ExtendTypes.CONST and
len(bezierVecs) > 1:
+ #print l, len(bezierVecs)
+ # start
+
+ while l > 2 and (flats[0][RIGHT] and
flats[1][LEFT] and (abs(bezierVecs[0][MID][Y] - bezierVecs[1][MID][Y]) < eul)):
+ print "\tremoving 1 point from
start of the curve"
+ del flats[0]
+ del bezierVecs[0]
+ icu.delBezier(0)
+ TOT += 1
+ l-=1
+
+
+ # End
+ while l > 2 and flats[-2][RIGHT] and
flats[-1][LEFT] and (abs(bezierVecs[-2][MID][Y] - bezierVecs[-1][MID][Y]) <
eul):
+ print "\tremoving 1 point from
end of the curve", l
+ del flats[l-1]
+ del bezierVecs[l-1]
+ icu.delBezier(l-1)
+ TOT += 1
+ l-=1
+
+
+
+ if l==2:
+ if isflat( bezierVecs[0] )[RIGHT] and
isflat( bezierVecs[1] )[LEFT] and abs(bezierVecs[0][MID][Y] -
bezierVecs[1][MID][Y]) < eul:
+ # remove the second point
+ print "\tremoving 1 point from
2 point bez curve"
+ # remove the second point
+ del flats[1]
+ del bezierVecs[1]
+ icu.delBezier(1)
+ TOT+=1
+ l-=1
+
+ # Change to linear for faster evaluation
+ '''
+ if l==1:
+ print 'Linear'
+ icu.interpolation =
IpoCurve.InterpTypes.LINEAR
+ '''
+
+
+
+
+ if interp== IpoCurve.InterpTypes.CONST:
+ print "Not yet supported"
+
+ print 'total', TOT, TOTBEZ
+ return TOT, TOTBEZ
+
+def main():
+ ret = Draw.PupMenu('Clean Selected Objects Ipos%t|Object IPO%x1|Object
Action%x2|%l|All IPOs (be careful!)%x3')
+
+ sce = bpy.data.scenes.active
+ ipos = []
+
+ if ret == 3:
+ ipos.extend(list(bpy.data.ipos))
+ else:
+ for ob in sce.objects.context:
+ if ret == 1:
+ ipo = ob.ipo
+ if ipo:
+ ipos.append(ipo)
+
+ elif ret == 2:
+ action = ob.action
+ if action:
+ ipos.extend([ipo for ipo in
action.getAllChannelIpos().values() if ipo])
+
+
+
+ if not ipos:
+ Draw.PupMenu('Error%t|No ipos found')
+ else:
+ total_removed, total = clean_ipos(ipos)
+ Draw.PupMenu('Done!%t|Removed ' + str(total_removed) + ' of ' +
str(total) + ' points')
+
+ Window.RedrawAll()
+
+
+if __name__ == '__main__':
+ main()
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