Posts made by nicholas_yue

After calling MergeDocument()

merge_status = c4d.documents.MergeDocument(doc, path,
                                           c4d.SCENEFILTER_MERGESCENE | c4d.SCENEFILTER_OBJECTS)

I check merge_status to be true and wish to find some handle/name to the object associated with the call to MergeDocument(), how do I do that ?

I tried the following on an empty scene

        doc = c4d.documents.GetActiveDocument()
        ao = doc.GetActiveObject()

that works if I am calling MergeDocument for a single path but if I am calling MergeDocument (in a loop) for a collection of paths, GetActiveObject() points to the same object, not the next one corresponding to the next path I am merging into the scene

Cheers

I am troubleshooting a crash in C4D R21 commandline.exe on Windows 10

Error: application crashed
C4DUnhandledExceptionFilter: writing exception info
C4DUnhandledExceptionFilter: writing call stacks

Where are the likely place I can go to look at the exception info and call stacks that was being written out ?

Cheers

We are using Arnold with C4D

While iterating the scene, we have found that one of the node (create via the ArnoldtoC4D plugin), the GetNext() method does not return the next object but itself, this resulted in an infinite loop iterating the scene.

Since we are now sitting between two different vendors, I am trying to narrow it down to who I need to follow up with regarding this issue.

>>> doc = c4d.documents.GetActiveDocument()
>>> obj = doc.GetFirstObject()
>>> print(obj)
<c4d.BaseObject object called 'Arnold distant_light/Arnold Light' with ID 1030424 at 0x0000027ACD423D10>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423AD0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423FB0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423DF0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423AD0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423FB0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423DF0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423AD0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423FB0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423DF0>
>>> obj.GetNext()
<c4d.BaseObject object called '<display driver>/Arnold Driver' with ID 1030141 at 0x0000027ACD423AD0>
>>> 

Cheers

@zipit There was a typo when updating to use the new IDs generated from Maxon, it has since been resolved and the plugins are loading.

Cheers

I am currently using this approach to iterate the objects in a document

doc = c4d.documents.GetActiveDocument()
obj = doc.GetFirstObject()
next_obj = obj.GetNext()
while next_obj:
# Do stuff
next_obj = obj.GetNext()

Is there some equivalent of doing this via e.g. indexing in a for-loop ?

Cheers

I have generated the IDs from the site you recommended.

When I replace the plugin IDs with those generated from https://developers.maxon.net/forum/pid the menu would not even load.

Cheers

I have a dialog button which hangs when I click it but it only hangs for a specific scene.

From looking at the printout in the python console window, it appears that when I click the 'Submit' button, it never reaches the call to Command()

TTR_PLUGIN_ID = 999121032
TTR_CANCEL_BUTTON = 12003
TTR_SUBMIT_BUTTON = 12004

    def Command(self, id, msg):
        print('TurnTableRenderDialog::Command()')
        print('id = {}'.format(id))
        print('TTR_SUBMIT_BUTTON = {}'.format(TTR_SUBMIT_BUTTON))
        if (id == TTR_SUBMIT_BUTTON):
            print('TTR_SUBMIT_BUTTON')

    def CreateLayout(self):
        '''
        Frame Chunk size,
        Render folder prefix
        Frame range (start, end)
        '''
        self.SetTitle('Submit turn table to Tractor (PlutoWithDamage)')
        self.GroupBegin(id=1013, flags=c4d.BFH_SCALEFIT, cols=1)
        #
        self.GroupBegin(id=1014, flags=c4d.BFH_SCALEFIT, cols=2)

        self.AddStaticText(TTR_COMMENT_LABEL, c4d.BFV_MASK |
                           c4d.BFH_RIGHT, name="Comments")
        self.AddEditText(TTR_COMMENT_EDIT, c4d.BFV_MASK |
                         c4d.BFH_LEFT, initw=400)

        self.AddStaticText(TTR_FRAME_RANGE_LABEL, c4d.BFV_MASK |
                           c4d.BFH_RIGHT, name="Frame range (start,end,step)")
        self.GroupBegin(id=1015, flags=c4d.BFH_SCALEFIT, cols=3)
        self.AddEditNumberArrows(TTR_FRAME_RANGE_START, c4d.BFV_MASK, initw=100)
        self.AddEditNumberArrows(TTR_FRAME_RANGE_END, c4d.BFV_MASK, initw=100)
        self.AddEditNumberArrows(TTR_FRAME_RANGE_STEP, c4d.BFV_MASK, initw=100)
        self.GroupEnd()

        self.GroupEnd()
        #
        self.GroupBegin(id=1016, flags=c4d.BFV_MASK | c4d.BFH_RIGHT, cols=2)
        self.AddButton(TTR_CANCEL_BUTTON, c4d.BFV_MASK |
                       c4d.BFH_RIGHT, initw=100, name="Cancel")
        self.AddButton(TTR_SUBMIT_BUTTON, c4d.BFV_MASK |
                       c4d.BFH_RIGHT, initw=100, name="Submit")
        self.GroupEnd()

I am writing some scene assembly tool using C4D and c4dpy.

I am bringing in Alembic cameras and other geometry assets.

On the commandline.exe, there is no option to specify which camera I can render with so I am wondering if there is some python call I need to make to the C4D document before saving so that when I render the file, it knows which camera to use ?

Cheers

Hi,

Is there a call to c4d to ascertain if there are unsaved changes in the current session. The current session was started from opening a file from disk.

I am using R21 on Windows and using Python.

Cheers

Hi,

I read that I can get the RenderData object via

rdata = doc.GetActiveRenderData()

I see that frame range values are documented here

https://developers.maxon.net/docs/py/2023_2/modules/c4d.documents/RenderData/index.html?highlight=renderdata

RDATA_FRAMEFROM
RDATA_FRAMETO
RDATA_FRAMESTEP

Cheers

Hi,

I am reading the following

https://developers.maxon.net/docs/py/2023_2/modules/c4d.gui/GeDialog/index.html?highlight=addeditnumberarrows#GeDialog.AddEditText

hoping there might be some directory browsing UI.

My intention is to allow the user to pick an output directory for some processing.

Cheers

Hi,

I have difficulty keeping the label for a edit UI component on the same line with the following code. I want the FRAME_CHUNK_EDIT to the right of FRAME_CHUNK_LABEL

    def CreateLayout(self) :
        '''
        Frame Chunk size,
        Render folder prefix
        Frame range (start, end)
        '''
        self.GroupBegin(id=1013, flags=c4d.BFH_SCALEFIT, cols=1)
        #
        self.GroupBegin(id=1014, flags=c4d.BFH_SCALEFIT|c4d.BFV_SCALEFIT, cols=1)
        self.AddStaticText(FRAME_CHUNK_LABEL, c4d.BFV_MASK, name="Frame Chunk size")
        self.AddEditNumberArrows(FRAME_CHUNK_EDIT, c4d.BFV_MASK, initw=100)
        self.GroupEnd()
        #
        self.AddButton(SUBMIT_BUTTON, c4d.BFV_MASK, initw=100, name="Submit")
        self.GroupEnd()
        return True

Cheers

@m_adam said in Unable to update Alembic path in xref:

Unfortunately, there is no built-in way to control MessageBox within Cinema4D.

The only way for you is to install a 3rd party python package, here a possible one https://github.com/asweigart/pyautogui.

Cheers,
Maxime.

But I am running the script with c4dpy, there is no UI.

Is there something I can call in c4dpy to tell the current active session to default to "Yes", it seems that c4dpy defaults to "No"

Cheers

@r_gigante said in Unable to update Alembic path in xref:

DESCFLAGS_SET_USERINTERACTION

Using DESCFLAGS_SET_USERINTERACTION there was a prompt in my script.

Update XRef (Yes) or replace (No)?

How do I respond (Yes) in my script ?

Cheers

I have the following code which was able to get the path but can't update the path

flags = c4d.SCENEFILTER_MERGESCENE | c4d.SCENEFILTER_OBJECTS | c4d.SCENEFILTER_MATERIALS

active_doc = c4d.documents.GetActiveDocument()
merge_status = c4d.documents.MergeDocument(active_doc, target_scene, flags)
assert(merge_status)
# Model[c4d.ID_CA_XREF_FILE]
obj_name_to_search = 'Model'
xref = active_doc.SearchObject(obj_name_to_search)
alembic_path = xref.GetParameter(c4d.ID_CA_XREF_FILE, c4d.DESCFLAGS_GET_NONE)
print(alembic_path)
status = xref.SetParameter(c4d.ID_CA_XREF_FILE, animated_alembic_file, c4d.DESCFLAGS_SET_PARAM_SET)
assert(status)
if True:
    c4d.documents.SaveDocument(active_doc,
                            target_scene,
                            c4d.SAVEDOCUMENTFLAGS_0,
                            c4d.FORMAT_C4DEXPORT)

Hi,

I have been using GetNext() and GetDown() to perform depth first visit of the scene. That works fine.

I wish to now perform some operations a a given hierarchy level.

Is there some GetNodeListsAtCurrentLevel() type of methods ?

I am using the Python API with R21

Cheers

OK, I will use the support forum.

Yes, using "Add XRef..." still result in seeing the Alembic Settings pop up every time I open the file.

I am creating the xRef from the UI

I created a couple of XRef that load alembic file. When I re-open the C4D file, I get a pop-up for each alembic file. How can I suppress the Alembic pop-up as I plan to build a large scene with many XRef and don't want the artists to click OK for every alembic file in the scene.

@m_magalhaes Is there a way to get Cinema4D to update the object identifier ? When I import an alembic file, Cinema4D builds a hierarchy and all the paths recursively. Is there a way to tell Cinema4D to rebuild that hierarchy or is deleting and re-importing the only way to get the object identifier rebuilt ?