Posts made by i_mazlov

Hi @Kantronin,

Instead of creating multiple consequent postings please consolidate them in a single one. I've also noticed that you've added "programming" tag but haven't mentioned the language you're talking about (is it c++ or python?).

Regarding your questions. Transforming the axis of a PointObject effectively means transforming the point values. There're some helping commands that I've shown you in my previous message, but what they effectively do is just transforming the points. Please have a look into the operation_transfer_axis_s26.py example, which demonstrates how to perform axis translation.

As for the rotation part, I'd need to point you once again to our Matrix Manual, which actually contains the answer to your question. Namely, the chapter "Constructing and Combining Transforms" explains the usage of functions c4d.utils.MatrixRotX(), c4d.utils.MatrixRotY() and c4d.utils.MatrixRotZ(). I will not copy & paste the same code snippet from our manual, so please check it youself.

Combining these with the example above should do the trick for you, unless you don't have the initial transformation of your ring splines. If that's the case, then your task turns into a way more complex form of the optimization problem.

Please also note, that you can only do the object axis transformations on PointObject (and on PolygonObject since it's inherited from PointObject). This effectively means that if you're using the Osplinecircle instead of an ordinary Ospline, this wouldn't work, as it doesn't store any points inside. In this case you'd need to convert to Ospline. If that's not an option for you, you can check the Geometry Axis and Geometry Orientation scene nodes, as they allow you to transform the axis "on-the-fly", so this would work even with non-point objects.

Cheers,
Ilia

Hi @gheyret,

For such complex drag-n-drop scenarios you're welcome to use our C++ SDK (check the DragAndDrop class), as Python SDK is usually pretty limiting for the drag-n-drop use cases.

You could potentially try to work around this using MultilineEditText, which parses the attributes that were dragged onto it, but I'm afraid this is not what you're looking for after all.

Cheers,
Ilia

Hi @Kantronin,

I'm struggling to understand what exactly you're trying to achieve here. For your further postings please double check our Support Precedures, namely the How To Ask Questions section. Your question is also lacking the scope of question (taking into account you're posting in "General Talk"). Please note, that for the end-user questions we kindly ask you to proceed to our Support Center, where our colleauges can provide you with better support on given topic.

With that's said and as you've mentioned you're using python, I move your posting to the "Cinema 4D SDK" subforum and give you some hints.

I kind of induce that you want to align the global coordinate system with the local coordinate system of your object. However, the way you're saying it that you'd like to move the origin of your document into the origin of your object, confuses me a bit.

You can check the Workplane Modes to set your workplane properly (e.g. lock it to your object ring):

If what you're trying to do is to work with the transformation of your object, please refer to our Matrix Manual, which explains how transformations work for objects in cinema 4d. In this case you can either work with commands utilizing the transformation manipulation of the object, such as
"Reset Transform" if you'd like to move your object to the origin or "Freeze Transform", if you'd like to define the local coordinate system for the object (which is addressed as "relative" in our API). You might be also interested in "Center to ..." group of commands, which offer you a toolset on most common transfomation manipulation actions.

When you'd like to work with bare matrices, I suspect that what you're looking for is the transformation from the global origin into the object's local coordinate system, which would be defined as a global transformation matrix of the object c4d.BaseObject.GetMg():

originToObject: c4d.Matrix = op.GetMg()

or in the opposite direction is the inverse of such matrix:

objectToOrigin: c4d.Matrix = ~op.GetMg()

Cheers,
Ilia

Hi @shahir-zaman ,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Assuming that what you're trying to achieve is to toggle the "UV Grid" option

You effectively have two options:

1. The easiest one is to execute CallCommand(170776) (you can find the command ID in the Script Log)
2. The more involved but also more flexible way is to find the UV settings scenehook and go through all its branches (or may be not all of them, depending on what specifically you want to achieve). Please find the C++ and Python code snippets below.

Cheers,
Ilia

C++ commanddata execute function code snippet:

Bool MyCommandData::Execute(BaseDocument* doc, GeDialog* parentManager)
{
  const Int32 ID_UV_SETTINGS_HOOK = 1053309;
  
  if (!doc)
    return true;
 
  BaseSceneHook* sceneHook = static_cast<BaseSceneHook*>(doc->FindSceneHook(ID_UV_SETTINGS_HOOK));
  if (!sceneHook)
    return true;
 
  maxon::BufferedBaseArray<BranchInfo, 20> infos;
  sceneHook->GetBranchInfo(infos, GETBRANCHINFO::NONE) iferr_ignore("GetBranchInfo");
 
  for (BranchInfo& info : infos)
  {
    if (info.name != "UVSettingsBranch"_s)
      continue;
 
    GeListNode* viewSettings = info.head->GetFirst();
    while (viewSettings)
    {
      GeData value;
      viewSettings->GetParameter(CreateDescID(UV_SETTINGS_FILTER_SHOW_GRID), value, DESCFLAGS_GET::NONE);
      Bool valueBool = value.GetBool();
 
      value = {!valueBool};
 
      viewSettings->SetParameter(CreateDescID(UV_SETTINGS_FILTER_SHOW_GRID), value, DESCFLAGS_SET::NONE);
 
      viewSettings = viewSettings->GetNext();
    }
  }
 
  EventAdd();
 
  return true;
}

Python script code snippet (special thanks to @m_adam on this one):

import c4d

def main() -> None:
    sh = doc.FindSceneHook(1053309)
    for branch in sh.GetBranchInfo():
        if branch["name"] != "UVSettingsBranch":
            continue
        
        viewSettings = branch["head"].GetFirst()
        while viewSettings:
            viewSettings[c4d.UV_SETTINGS_FILTER_SHOW_GRID] = not viewSettings[c4d.UV_SETTINGS_FILTER_SHOW_GRID]
            viewSettings = viewSettings.GetNext()       
        
    c4d.EventAdd()

if __name__ == '__main__':
    main()

Hi @blizz_nsm ,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Using the FileExecute is indeed the intended way to load your plugin. However, without deeper investigation it's hard to say whether such change in behavior is expected or should be considered as a bug.

As a result of my discussion with one of our devs, there could have been some core changes that could lead to such behavior change. If that's the case, it's highly unlikely to be changed. If you'd like to proceed further with this issue, I'd kindly ask you to report the issue to our Support Center (you can mention our discussion here). Alternatively, you can add reproduction steps for the issue directly here. I picture it as a zip-folder with the hello world project that compiles in the dll + the ZScript you're using to load this dll; please also don't forget to include the specific ZBrush versions, where the issue is reproducible, as well as your system info - operating system version and CPU architecture.

Anyway, the developer I mentioned above suggested some workaround. Namely, you can create another dll without any dependencies (let's call it "resolver"), which purpose is to search for the full paths of the dependencies of your plugin (e.g. by searching in the environment PATH variable). This way your ZScript can first execute the resolver to retrieve all your dependency absolute paths, which you could then directly load first before loading your plugin dll. Please note that we have neither confirmed your issue (as you haven't yet shared the repro steps), nor haven't we double checked the above-mentioned workaround.

Cheers,
Ilia

Hi @yaya,

I see your point here and I can only guess if such behavior is expected or not, as this is (and I've already mentioned this to you earlier) a question that has nothing to do with development.

In general it sounds like a bug, so you're very welcome to reach out to our Support Team and ask them for a proper workaround if they actually classify this issue as a bug.

I'm moving your thread to general talk section in case someone from our community might be willing to share their experience on that topic.

Cheers,
Ilia

Hi @yaya,

My understanding is that the workflow you're looking for involves using the "Hierarchy Merge Level" attribute of the rigid body tag to control the granularity of your hierarchy collision representation. For the other end user questions (including questions about the new simulation workflows) please consult our Cinema 4D User Guide or reach out to our Support Center.

Operating with this attribute from within your plugin hasn't changed and is described in Parameters section of the C4DAtom Manual.

In your case you'd effectively be interested in the RIGIDBODY_PBD_INDIVIDUAL_ELEMENTS_MERGE_LEVEL parameter of the Trigidbody. Please check the screen recording below.

Cheers,
Ilia

Screen recording:

Hi @yaya,

As this forum is mainly for the development related topics and your question is heavily in the end user area, I suggest you to reach out to our Support Center regarding your Cinema 4D worlflow related questions.

In case I misunderstood your question and it is effectively development related, please elaborate on the context of your question and provide a code snippet that highlights the issue you're trying to solve as per our Support Procedures.

Cheers,
Ilia

Hi @Gemini,

In short, @gheyret is correct and the drag&drop feature is mostly used to explore the IDs that stay behind the attributes all across different parts of cinema. You can have a further look into our documentation, namely the Python Console Manual¶ describes this with some details on what to expect to see in the console.

Please note, knowing the correct ID is often not sufficient and you need to explore more, depending on the context of your attribute. For example, in your case the "Render pass file" is an attribute of the "Octane Renderer" videopost data. This is typically out of scope on this forum. However, this topic was tackled not once, e.g.

• Dunhou showed some Octane-specific approach
• Ferdinand showed general approach of accessing render settings

Cheers,
Ilia

Hi @chuanzhen,

Glad you've solved the issue! We're grateful to you for sharing your solution with the community (moreover in such a visual way), this is highly appreciated!

Cheers,
Ilia

Hi @shurkan,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Great that you've managed to find the solution yourself! Thank you in advance for sharing it with the community!

Just a short note about your solution is to be careful with threading, namely, in your case it's expected to execute DrawViewes in the following way:

c4d.DrawViews(c4d.DRAWFLAGS_ONLY_ACTIVE_VIEW | c4d.DRAWFLAGS_NO_THREAD | c4d.DRAWFLAGS_STATICBREAK)

Something similar to this topic here: Troubleshooting Safe Frame Calculations Across Different Takes in Cinema 4D

Cheers,
Ilia

Hi @heytraile,

Please have a look at our Support Procedures: How to Ask Question section. Usually it is very helpful if one provides a relevant code snippet, demonstrating the issue. This helps to reduce the room for any misinterpretations of your original question.

Regarding the issue you're describing, the "null" being logged to the console is often a symptom of an implementation issue within a function that overrides the base implementation. Specifically, if a function (such as Message() or RestoreLayout()) is expected to return a particular type (e.g., bool), but instead returns None or a mismatched type, it can result in unexpected behavior and the "null" log.

Cheers,
Ilia

Hi @Vladislav-Borovikov,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Custom datatypes implement copy constructor, which effectively means that at the line

gradient = ramp_node[c4d.REDSHIFT_SHADER_RSRAMP_RAMP]

you copy c4d.Gradient from the node and store it in variable 'gradient'. All further interactions are performed with this local copy of the gradient. In order to apply them back to the node you need to assign your local variable after modifications back to the node:

ramp_node[c4d.REDSHIFT_SHADER_RSRAMP_RAMP] = gradient

Cheers,
Ilia

Hi @RyanTheDev,

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Please elaborate on your question, there's no good reference or solution you can get without providing the context. What is a "custom file type"? do you mean you've implemented BaseSceneLoader plugin? When you try to open dialog? Is it happening on main thread? What's the code that does this? What does it mean "keeps failing" - does it give you error instead?

You can also have a look at SCENEFILTER::DIALOGSALLOWED flag, if it's applicable in your case.

Cheers,
Ilia

Hi @baca,

The expected workflow to achieve syntax highlighting in VSCode is using our C4D Connector Extension for VSCode. Please note, for syntax highlighting to work your VSCode need to be opened within some workspace (e.g. when you do "Open folder" in VSCode).

The approach from the c4dpy manual should still be working and the error you're sharing looks like command

"/Applications/Maxon Cinema 4D 2025/c4dpy.app/Contents/MacOS/c4dpy" -I

did not make an output that's expected by the VSCode. Please use the extension approach instead.

Cheers,
Ilia

Hi @Gemini,

please excuse the delayed answer.

It's hard to understand what exactly you're asking about.

If you want to create custom menu, please check the following threads:
Building menus with C4DPL_BUILDMENU in S26+
How to add "scripts" to a menu?

If your question is anyhow related to loading plugins from custom location, please check the g_additionalModulePath argument. Related discussion was in the following thread:
how to program plugins with python?

Otherwise, please give a more detailed description of what specifically you're trying to achieve.

Cheers,
Ilia

Hi @llealloo,

please excuse the delayed answers.

To the best of my knowledge in the near future there're no plans for integrating usd python bindings into c4d python system.

By the way, with the 2025.0 release internal usd library was properly updated to OpenUSD 24.08, so we expect the double loading usd issue to be solved under OSX.

Cheers,
Ilia

Hi @ThomasB,

Please note that R21 is generally out of scope of full support on this forum. I've tried your code with the oldest C4D version I have (which is R25) and I cannot reproduce your issue.

However, looking in your code it seems like you might need an additional handling for the case when the texture view is not open, please have a look at the comment in our example: call_uv_command_r18.py .

You can also find some useful information on a similar thread, where Ferdinand gave some insights about GetActiveUVSet function: GetActiveUVSet() returns None if multiple UVs are active?.

Cheers,
Ilia

Hi @brian-michael,

I've forked your posting in a dedicated thread. For your following postings please stick to our guidelines, which you can find in the Support Procedures, namely:

Singular Subject: From all this follows that a topic must have a singular and sparse subject tied to a specific problem

especially when it comes to N-years-old threads

Regarding your question, please share more context on what specifically you're trying to do, because depending on that you can end up in a completely different ways of approaching your goal.

For example, if you'd like to bake animation in a "read-only manner" (just take the object transformations and store/send them somewhere), then the suggested approach would be to clone document and process it in a separate C4DThread. You can check Ferdinand's code example on the exact same topic in application to rendering document: RenderDocument/PythonCallBack : how to display progress prints during the render. However, with such approach you're limited to not being able to modify original document (because you'd use the cloned document instead of the active one).

Cheers,
Ilia

Hi @kng_ito ,

Please excuse the delayed answer.

According to our codebase the Execute() function will return GV_CALC_ERR_CALCULATION_FAILED for the calculation errors happening on master or global scope, namely when the GvNodeMaster was not able to calculate successfully (i.e. GvCalcState higher than GV_CALC_STATE_LOCAL_FAILURE). Issues like zero division only cause local failure, hence are not returned as error in Execute() function. Unfortunately, there's not much you can effectively do here.

In our SDK support meeting Ferdinand suggested an approach of adding intermediate xpresso python node, where you can detect and handle issues yourself. However, this highly depends on your use-case scenario, because if you for example need to batch-process xpresso graphs, this won't be any practical.

Cheers,
Ilia