Getting cache of a Python Generator under a Python Generator
orestiskon last edited by orestiskon
using a python generator as a source for another python generator can be helpful for prototyping. But I'm having trouble getting the cache of the child generator.
GetCache always returns me "None", and using current state to object also returns "None".
This is a code sample:
def main(): obj = op.GetDown().GetClone() print obj.GetCache() return obj
I tried to see if it has children or siblings with GetDown or GetNext but I get:
"AttributeError: 'NoneType' object has no attribute 'GetDown'"
Code with current state to object:
def currentState(obj) : return c4d.utils.SendModelingCommand(c4d.MCOMMAND_CURRENTSTATETOOBJECT,[obj],c4d.MODELINGCOMMANDMODE_ALL,c4d.BaseContainer(),doc) def main(): obj = op.GetDown().GetClone() collapsed = currentState(obj) print collapsed.GetChildren() //returns  return collapsed
In the docs there is a recursion function for the cache but I'm not sure how to use it.
I'm trying to understand what I'm doing wrong, are there suggestions on how to achieve this?
Here is a sample file:
orestiskon last edited by
def main(): obj = op.GetDown().GetCache().GetClone() print obj return obj
getting the cache before cloning does seem to work, I couldn't see the object as it was off screen before.
Still it opens some questions such as why the clone didn't initially work; I assume I needed to insert it into the doc, which I had tried without much success (crashed cinema when I tried to evaluate the doc).
In any case, the problem seems solved for now.
m_adam last edited by m_adam
Hi @orestiskon SendModelingCommand and especially CurrentStateToObject need the object to be actually in the passed document.
So you need to create a temporary doc and use it to operates.
import c4d def currentState(obj) : return c4d.utils.SendModelingCommand(c4d.MCOMMAND_CURRENTSTATETOOBJECT,[obj],c4d.MODELINGCOMMANDMODE_ALL,c4d.BaseContainer(),obj.GetDocument()) def main(): # Retrieve the python generator obj = op.GetDown() if obj is None: return objClone = obj.GetClone() if objClone is None: raise RuntimeError("Failed to clone the object") # Make the children Python Generator disapear obj.Touch() # Creates a temporary document that will be used to evaluate the cache of the object tempDoc = c4d.documents.BaseDocument() if tempDoc is None: raise RuntimeError("Failed to create a temporary doc") # Inserts the child python generator that exists only in memory into our tempo doc tempDoc.InsertObject(objClone) returnedObj = currentState(objClone) return currentState(objClone)