okay, so I've got something kinda working. But my math is wrong somewhere in
figuring out the average normals. I'm having a hard time visualizing it.
Here's my code in case anybody has experience averaging normals. Maybe I'm
doing this all wrong - I dunno. I'd really appreciate any help. Thx!
#========================================
import pymel.core as pm
from itertools import chain
import time
def convertToVerts( components ):
return pm.ls( pm.polyListComponentConversion( components, toVertex=True ),
flatten=True)
def getAvgVertTfm( components ):
verts = convertToVerts(components)
positions = []
normals = []
for vert in verts:
positions.append( vert.getPosition() )
normals.append( vert.getNormals() )
avgPos = [ sum(pos)/len(pos) for pos in zip(*positions) ]
avgNormal = [ sum(normal)/len(normal) for normal in zip(*normals) ]
avgNormalRotation = [ sum(rotation)/len(rotation) for rotation
in zip(*pm.datatypes.degrees(avgNormal)) ]
avgTfm = pm.datatypes.TransformationMatrix()
avgTfm.setTranslation(avgPos, space="world")
avgTfm.setRotation(avgNormalRotation)
null = pm.spaceLocator()
null.setTransformation( avgTfm )
'''
still need to add object matrix multiplications
'''
startTime = time.time()
getAvgVertTfm( pm.ls(sl=True) )
print time.time()-startTime
#=======================================
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