Hi Manuel,
Thank you. I'll test it and come back to you if I have any questions.
Best regards,
Tomasz

Hi Manuel,
What I really need is a code snippet to travel thru all takes, list all nodes per take with visibility changed, as per the screenshot below.
https://i.imgur.com/qedKv2K.png
I'd like to also know if there is a way to find what else has been changed per object (like coordinates)
I already got a code to rebuild takes, from a text file, when the updated mesh is imported and replacing the current mesh on the scene, so that's the only part which I need to make the solution work
Best regards,
Tomasz

Hi,
I'm looking for a way to export info about objects, disabled for rendering, from take system, and use it later. I got a scene with hundreds of different viewpoints, each in separate take. If there are objects obstructing camera view, for that viewpoint, they I hide them for each take. That works great, and I'm big fan of Take System. The issue starts as soon as I want to bring updated mesh into my scene. As soon as the old mesh is deleted, and new mesh imported to the scene - all my references to previously hidden objects are gone (even the new mesh got identical hierarchy and names). As I understand Take Systems uses pointer to the scene node, rather than name of the object, which of course make sense.
To avoid hours of extra work every time when I bring updated mesh to c4d, to go thru all viewpoint and re-hide previously hidden objects, I'm looking for a solution to save info about hidden objects for each take, and then with the new mesh, just re-generate it in Python.
I checked all take examples on GitHub, as well as this forum, but was unable to find anything helpful for the task.

Can you please help me with this problem?
Best regards,
Tomasz

Hi Ferdinand,

Thank you for the explanation. Real shame the Asset API has not been exposed to Python yet. I'll wait till it's done and fully documented - let's hope it will be soon.

Best regards,
Tomasz

Hi,
As a part of an automated system, I load required materials and assets, when preparing the first version of a scene, from the Content Browser (Cinema 4D R23), using simple Python code (below, for materials)

def LoadMaterial(location, name):
    doc = c4d.documents.GetActiveDocument()
    location = "preset://" + location + "/" + name
    status = c4d.documents.MergeDocument(doc, location, c4d.SCENEFILTER_MATERIALS)
    return status

As I understand the Content Browser have been replaced by Asset Browser, which looks much more powerful and I can't wait to start using it I can import all the assets from lib4d into R25 and access them manually, but I really need is the ability to load the assets from a code, as I do in r23. What's the best way of doing that? Can you provide me with a code snippet?

I basically want to have the same ability as in R23, wherein r25 I can pass DB name (or full path), together with object/mat name, and be able to download it to the scene. Also - is there a way to list all versions of an object or materials, and then choose one to download?

Best regards,
Tomasz

Thank you @zipit
I adopted your solution into our code and it works exactly as expected.
Thank you for your help.
Best regards,
Tomasz

Hi @zipit
Thank you for your clarification.
Is there any other way of doing that? Currently, I'm trying to modify projection for existing takes, but if there is a way to do it from scratch when the take is created - that could work for now.
Basically what I'm trying to do is to create multiple different takes per room, and for every take - apply the same material to different floor meshes (so if you're in bedroom1 and you change carpet - the carpet material would change on all other defined the rooms)
I don' mind to send you my current code + files we use to generate the takes, but that's not something I would be able to share on the public forum.
Best regards,
Tomasz

Hi @zipit Not sure what do you mean. The problem is not related to animation.
I recorded my screen when tried your solution, and shared with you the results of the script, which were not what I was expecting - the projection stays "Spherical" after running the script in the Script Manager.

Hi @zipit,
I'm sorry if I wasn't clear what I was trying to achieve. I used your updated script and recorded a short gif, which shows, the projection materials I'm trying to change in takes stays the same after running the script. I'm expecting the projection to change from current Spherical to new UVW Mapping. What am I missing?

Best regards,
Tomasz

@zipit said in Changing material projection in takes using Python:

TEXTURETAG_PROJECTION_UVW on the selected objects texture tag.
"""
import c4d

def main():
    # Checks if there is an active object.
    if op is None:
        raise ValueError("op is none, please select one object.")

    # Gets the TakeData from the active document (holds all information about 
    # Takes)
    takeData = doc.GetTakeData()
    if takeData is None:
        raise RuntimeError("Failed to retrieve the take data.")

    # Gets the active Take and check it's not the main one
    take = takeData.GetCurrentTake()
    if take.IsMain():
        raise RuntimeError("The selected take is already the main one.")

    # Gets the material tag of the cube.
    tag = op.GetTag(c4d.Ttexture)
    if tag is None:
        raise RuntimeError("Blah, no texture tag on selected object.")
    
    # The single level DescId for the projection parameter.
    descId = c4d.DescID(
        c4d.DescLevel(c4d.TEXTURETAG_PROJECTION, c4d.DTYPE_LONG, 0))
    newValue = c4d.TEXTURETAG_PROJECTION_UVW
    
    # Add an override if this parameter is not already overridden, otherwise 
    # returns the already existing override.
    overrideNode = take.FindOrAddOverrideParam(
        takeData, tag, descId, newValue)
    if overrideNode is None:
        raise RuntimeError("Failed to find the override node.")

    # Updates the scene with the new Take
    overrideNode.UpdateSceneNode(takeData, descId)

    # Pushes an update event to Cinema 4D
    c4d.EventAdd()


if __name__ == '__main__':
    main()```

Thank you @zipit
I've tried as suggested but still doesn't seems to be working the way I wanted.
I modified my code and included your suggestions, as well as my test scene, so you can see what's my issue. I bet it's something simple ;-).

import c4d
import os
from c4d import documents

listOfParentTakes = []
listOfChildTakes = []
objects = ["Plane","Plane.1","Plane.2"]


def GetListOfParentTakes():
    takeData = doc.GetTakeData()
    if takeData is None:
        return

    mainTake = takeData.GetMainTake()
    take = mainTake.GetDown()

    while take is not None:
        listOfParentTakes.append((take))
        take = take.GetNext()

def GetListOfChildrenTakes():
    for parent in listOfParentTakes:
        take = parent.GetDown()

        while take is not None:
            listOfChildTakes.append(take)
            take = take.GetNext()

# Main function

def main():

    c4d.CallCommand(13957)  # Clear Console
    doc = documents.GetActiveDocument()
    takeData = doc.GetTakeData()
    GetListOfParentTakes()
    GetListOfChildrenTakes()
    if takeData is not None:
        for el in listOfChildTakes:
            print ("Current take name : "+ el.GetName())
            takeData.SetCurrentTake(el)

            for currentObject in objects:
                obj = doc.SearchObject(currentObject)
                if obj is not None:
                    # Gets the material tag of the cube.
                    tag = obj.GetTag(c4d.Ttexture)
                    if tag is None:
                        raise RuntimeError("Blah, no texture tag on selected object.")
                        # The single level DescId for the projection parameter.
                    descId = c4d.DescID(c4d.DescLevel(c4d.TEXTURETAG_PROJECTION, c4d.DTYPE_LONG, 0))
                    newValue = c4d.TEXTURETAG_PROJECTION_UVW

                    # Add an override if this parameter is not already overridden, otherwise
                    # returns the already existing override.
                    overrideNode = el.FindOrAddOverrideParam(
                        takeData, tag, descId, newValue)
                    if overrideNode is None:
                        raise RuntimeError("Failed to find the override node.")


# Execute main()
if __name__=='__main__':
    main()

TakeProjectionTest.c4d