issues with shape parenting script

[vilkdage]

Any ideas why it only works on shapes with surfaces (polygon and NURB primitives, but not curves or Volume Primitives)?


import pymel.core as pm

selected = pm.ls (selection = True)
if len(selected) == 1:
    pm.warning('Must select 2 or more objects...');
elif len(selected) >= 2:
    selected.reverse()
    sel_end = selected[0]
    sel_child = selected[1:]
    pm.parent(sel_child, sel_end)
    for allObjects in sel_child:
        pm.makeIdentity(allObjects, a = True, t = True, r = True, s = True)
        findShape = pm.listRelatives(allObjects, s = True, ad = True)
        pm.select(d = True)
        pm.parent(findShape, sel_end, r = True, s = True)
        pm.delete(allObjects)
        pm.select()

[Justin Israel]

Can you be more specific about what doesn't work as expected?

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[vilkdage]

Sure.
If you were to run a script on objects with surface you will notice that they do not move from where they were. Their shapes has been parented and now they move as one object while staying in different positions in the world.

On the other hand, curves children jumps into place where their parent is. That is a problem as I want them not to move from their original position.

[Justin Israel]

When I make the following changes, it works for me:

import pymel.core as pm

selected = pm.ls (selection = True)
if len(selected) == 1:
    pm.warning('Must select 2 or more objects...');
elif len(selected) >= 2:
    selected.reverse()
    sel_end = selected[0]
    sel_child = selected[1

:]
    pm.parent(sel_child, sel_end, a=True) # <-- absolute

    for allObjects in sel_child:
        pm.makeIdentity(allObjects, a = True, t = True, r = True, s = True)
        findShape = pm.listRelatives(allObjects, s = True, ad = True)
        pm.select(d = True

)
        pm.parent(findShape, sel_end, a = True, s = True) # <-- absolute
        pm.delete(allObjects)
        pm.select()

​

Justin

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[vilkdage]

it still offsets, but what I found that works is if i run this script first:

import pymel.core as pm
selected = pm.ls(sl=True)

if len(selected) == 1:
    pm.warning('Must select 2 or more objects...');
elif len(selected) >= 2:
    selected.reverse()
    sel_end = selected[0]
    sel_child = selected [1:]

    locator = pm.spaceLocator()
    constraint = pm.parentConstraint(sel_end, locator)
    pm.delete(constraint)
    piv = pm.xform (locator, piv=True, q=True, ws=True)

    pm.parent(sel_child, sel_end)
    for allObjects in sel_child:

        pm.xform(allObjects, ws=True, piv=(piv[0], piv[1], piv[2]))

        pm.makeIdentity(allObjects, a = True, t = True, r = True, s = True)

    pm.delete(locator)
    pm.select(selected)

and without deselecting anything I run this part:

for allObjects in sel_child:

    findShape = pm.listRelatives(allObjects, s = True, ad = True)
    pm.select(d = True)

    pm.parent(findShape, sel_end, r = True, s = True)
    pm.delete(allObjects)
    pm.select()    

I have no idea why I can't combine these two parts, but it works and curves maintain offset.
Thanks a bunch for help! I will keep in mind that I should not forget "a" flag