De-constructing a hierarchy

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On 26/11/2010 at 17:25, xxxxxxxx wrote:

I need to create an algorithm that goes through a hierarchy of objects and rebuilds the list in a way that is would be able to rebuild the same hierarchy, later. Lets say:

Cube1
-Platonic1
--SweepNURBS1
---Spline1
---Spline2
--Cube2
---Platonic2
----Sphere1

The order of creation is (I believe) :

Cube1
Platonic1 (insert_under Cube1)
Cube2 ( (insert_under Platonic1)
Platonic2 ( (insert_under Cube2)
Sphere1 (insert_under Platonic2)
SweepNURBS (insert_under Platonic1)
Spline2 (insert_under SweepNURBS)
Spline1 (insert_under SweepNURBS)

This is because each time I InsertUnder, the inserted object ends up being the first child of its parent.
Is there any algorithm that goes through a hierarchy and returns a list of objects in the correct order so that a new scene could be reconstructed?
I already tried a few times to code such a thing but I'm having no luck :(
Anyone? Please...

Rui Batsita

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On 27/11/2010 at 02:29, xxxxxxxx wrote:

Then why don´t you use InsertAfter instead? ;) Insert the SweepNurbs with InsertUnder, then user InsertAfter(sweepnurbs) for cube2. Then go through that hierarchy level again and start doing the same to sweep and cube2 for their children.

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On 27/11/2010 at 06:35, xxxxxxxx wrote:

I need to automate the process. If I make it by hand, of course I would make it differently.
But I need to be able to provide any hierarchy to my code and it must create a list in the correct order so that it could all be solved with InsertUnder.
If there was an algorithm that would do what I need listing the objects in the correct order and having a flag telling that I should insert it with InsertUnder or InsertAfter, that would also be fine.

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On 27/11/2010 at 06:44, xxxxxxxx wrote:

I don´t see why you wouldn´t be able to make a recursive function out of my suggestion.

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On 29/11/2010 at 16:44, xxxxxxxx wrote:

Me neither ;-)

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On 04/12/2010 at 16:39, xxxxxxxx wrote:

The problem with InsertAfter is that it doesn't seem to work in Python. For example, the following code doesn't work inside a Python Generator:

def main() :
    parent=c4d.BaseObject(c4d.Osweep)
    profile=c4d.BaseObject(c4d.Osplinecircle)
    path=c4d.BaseObject(c4d.Osplinestar)
    profile.InsertUnder(parent)
    path.InsertAfter(profile)
    return parent

However, the following code does work:

def main() :
    parent=c4d.BaseObject(c4d.Osweep)
    profile=c4d.BaseObject(c4d.Osplinecircle)
    path=c4d.BaseObject(c4d.Osplinestar)
    path.InsertUnder(parent)
    profile.InsertUnder(parent)
    return parent

But I need to insert the path before and then the profile, to create a sweep. This is harder than I thought :-(