Same python code works differently on differently Maya (2012 - 2015) -


this simple code

import maya.cmds cmd  circle1 = cmd.circle(nr=(0, 0, 1), c=(0, -1.1, 0), ch=1) circle2 = cmd.duplicate(circle1[0], ic=1) circle3 = cmd.duplicate(circle1[0], ic=1) cmd.setattr(circle2[0] + '.rotatez', 120) cmd.setattr(circle3[0] + '.rotatez', -120)  allcurves = circle1[0], circle2[0], circle3[0] cmd.select(allcurves) cmd.makeidentity(apply=true, t=1, r=1, s=1, n=0)

works in maya 2012, giving me result:

enter image description here

instead, in maya 2015 result of same code this:

enter image description here

all circles moves origin.

it seems command cmd.makeidentity work differently, reading maya docs command same. construction history settings same. can't understand maya behind lines.

why lines of code works differently?

the real problem because of probable bug in way new maya (2015) performing preparations makeidentity when nodes have shared history/connections/nodes (in case makenurbcircle node). seems creating interim transformgeometry nodes compensate to-be frozen transforms in wrong order in chain. wasn't case in maya 2012, when order seems right. if @ comparison below, you'll see why.

2012 on left; 2015 on right: 2012 on left; 2015 on right

either ways, if want preserve shared history , freeze transform way whatever reason, might have manually makeidentity attempts to, in cleaner way want to; i.e. connect transformgeometry nodes in right order before manually freezing transformations on transforms (using xform).

here whipped that: (i update answer comments , explanation when find time later)

import maya.cmds cmds   def makeidentitycurveswithsharedhistory(curves=[]):     curve in curves:         curveshape = cmds.listrelatives(curve, shapes=true)[0]             makecircle = cmds.listconnections(curveshape, type='makenurbcircle')[0]         transformation = cmds.xform(curve, q=true, matrix=true)             transformgeonode = cmds.createnode('transformgeometry')         cmds.setattr('%s.transform' % transformgeonode, transformation, type='matrix')         cmds.connectattr('%s.outputcurve' % makecircle, '%s.inputgeometry' % transformgeonode)         cmds.connectattr('%s.outputgeometry' % transformgeonode, '%s.create' % curveshape, force=true)         cmds.xform(curve, matrix=[1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0])   circle1 = cmd.circle(nr=(0, 0, 1), c=(0, -1.1, 0), ch=1) circle2 = cmd.duplicate(circle1[0], ic=1) circle3 = cmd.duplicate(circle1[0], ic=1) cmd.setattr(circle2[0] + '.rotatez', 120) cmd.setattr(circle3[0] + '.rotatez', -120)  allcurves = circle1[0], circle2[0], circle3[0] makeidentitycurveswithsharedhistory(allcurves)

if above code used: enter image description here

disclaimer: theoretically, should work in version of maya; have tested on maya 2015.


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