Posts made by thomas

ok. I know not your department, but thats nuts.

Thanks!

@Dunhou @i_mazlov, thanks so much both. This really helped.

Where is the Redshift Python documentation, I tried the normal Redshift online help https://help.maxon.net/r3d/cinema/en-us/#search-python and the python plugin help.

I am looking for a way to read out the multipass names of my redshift rendersettings, such as 'Z' or 'depth'

in the code below the script successfully gives me the path at the very last print statement. I am looking for the other MP filenames
filepath 2: C:\Users\thoma\Dropbox\trauminc\projects\832-control_net\work\CG\c4d\balls\render\balls-v010\balls-v010.png, 1023671 defined in the render settings. such as balls-v010_depth0034

    def render(self, url):
    
    
    
            print(f"are we rendering? {self.rendering}")
    
            if self.rendering:
    
                return 
    
            
    
            self.rendering = True
    
            doc = c4d.documents.GetActiveDocument()
    
            docClone = doc.GetClone()
    
            rd = doc.GetActiveRenderData()
    
            print(f"render data: {rd}")
    
            print(f"multipass {rd.GetFirstMultipass()}")
    
            bmPreview = c4d.bitmaps.BaseBitmap()
    
            bmPreview.Init(int(rd[c4d.RDATA_XRES]), int(rd[c4d.RDATA_YRES]))
    
            print("starting to render")
    
            result = c4d.documents.RenderDocument(
    
                docClone, rd.GetData(), bmPreview, c4d.RENDERFLAGS_EXTERNAL, th=None
    
            )
    
            if result == c4d.RENDERRESULT_OK:
    
                filepath = rd[c4d.RDATA_PATH]
    
                print(f"filepath: {filepath}")
    
                if "$" in filepath:
    
                    filepath = self.resolve_and_normalize_path(filepath, doc, rd)
    
                file_format = rd[c4d.RDATA_FORMAT]
    
                print(f"file_format: {file_format}")
    
                filepath += self.get_extension_for_format(file_format)
                print(f"filepath 2: {filepath}, {file_format}")
    
                bmPreview.Save(filepath, file_format)
    
                self.send_image_to_server(filepath, URL)

            self.rendering = False
    
    
    
        def resolve_and_normalize_path( self, tokenized_path, doc, rd):
    
            # Define the rpData dictionary to resolve tokens
    
            rpData = {
    
                "_doc": doc,
    
                "_rData": rd,
    
                "_rBc": rd.GetData(),
    
                # "_frame": 2,  # Replace this with the actual frame number if available
    
                # Add any other needed data here
    
    
    
            }
    
    
    
            # Convert the tokens to their actual values
    
            filepath = c4d.modules.tokensystem.StringConvertTokens(tokenized_path, rpData)
    
    
    
            # Check if the filepath is absolute
    
            if not os.path.isabs(filepath):
    
                # If not, make it absolute
    
                base_path = doc.GetDocumentPath()
    
                filepath = os.path.join(base_path, filepath)
    
    
    
            # Normalize the file path to use the standard slashes for your OS
    
            filepath = os.path.normpath(filepath)
    
    
    
            return filepath

When I render via my plugin in RS, it renders one additional image with different colour settings. file: balls-v010.png in this image:

I have looked at https://github.com/PluginCafe/cinema4d_py_sdk_extended/blob/a12cca185a7a07fb20aa34520799b66007839e1e/scripts/05_modules/token_system/tokensystem_render_r17.py#L9 and its super helpful but doesn't help me with the AOVs

@i_mazlov thanks so much!
some super useful insights here. I think I will have eventually to move to C++

Hey!

I am working on a python plugin that sends renders to a webserver. It works well right now through a "render and send image" button in a dialog window the plugin creates.
I would love to send images when the viewport camera is moved or something changes in the scene with a visual impact, with a little timeout.
basically the same as the redshift IPR, it updates only when something relevant to the scene changes.

ChatGPT helped me find one way to do this by listening to messages.

class SceneChangeListener(c4d.plugins.MessageData):
    
    BASE_URL = "http://127.0.0.1:8000/inputs"  # Base part of the URL

    def __init__(self, plugin):
        self.last_render_time = 0
        self.plugin = plugin

    def CoreMessage(self, id, bc):
        # print(f"core message received: {id}")
        if id == c4d.EVMSG_CHANGE:
            print(f"my message received:{id}")
            current_time = time.time()
            if current_time - self.last_render_time >= 0.6:  # 300ms delay
                print(f"CoreMessage render triggered:{id}")
                self.last_render_time = current_time
                self.plugin.render(url=self.BASE_URL)
                # Trigger your render function here

        return True

this works but it gets triggered a lot for anything.

Next step is filtering a bit by messages. Ideally only when something that changes the main view, or I listen to only the messages I want to respond to, such as material manager, timeline, camera moves.

I played around with a few more messages I found here:
https://developers.maxon.net/docs/py/2024_2_0/consts/MSG_C4DATOM_PLUGINS.html. None of the few I tried were really that useful.

I guess these dont exist? Happy to try another approach.

@Dunhou is it possible to get in touch for you for freelance development? I couldn't find any email or socials.

Hi @ferdinand, your links really helped me a lot, and I managed to write a script that starts a render and sends the rendered image to a web service.

Can the SDK grab the live preview image from the redshift IPR? I assume not looking at the documentation: https://developers.maxon.net/docs/py/2023_2/search.html?q=redshift&check_keywords=yes&area=default

would love to see that being added. the HUD is amazing for internal tooling

slightly worrying that I hit this bug right away after my first 30 minutes to scripting in c4d.

this looks amazing. Can't wait to see arnold / RS

hi Ferdinand.

thanks so much for your help. This will be enough to get me going for now.

Hey Forum

Here is what I am trying to do:

1. capture the current viewport as an image
2. send it to a Python API
3. wait for the API to send an image back
4. use this image as a texture.

I realise my question involves a few steps and is complicated. I think some bits I'll be able to figure out. I think the external API bit sending and receiving will be easier, but I don't know much about the APIs in c4d. I am pretty good at Python and coding, but I have never worked with the API. I looked at the documentation and the GitHub examples but couldn't see any examples for the viewport and capturing it as an image.

Right now, I would like to start at step 01. Can you capture a viewport or, alternatively the render view? Can you capture (save an image) from any c4d window? For example from the RS or Arnold viewport even?

thank you,
T