Posts made by fwilleke80

Thanks, Paul! I'll try that out

Cheers,
Frank

You can download older SDK documentation versions here:
https://developers.maxon.net/?page_id=1118

Thank you, that fixed it.

Interesting...

If I put all code aside, simply start Cinema 4D 2023, and do the following:

1. Create Cube
2. Make Cube editable (with "c")
3. Choose Mesh > Add > Subdivide (click the cogwheel icon)
4. Set any settings, or don't change anything
5. Click OK

--> The cube does not change at all.

Is MCOMMAND_SUBDIVIDE maybe completely broken?

Cheers,
Frank

Hi,

I have a function that looks like this:

Bool SubdividePolygonObject(PolygonObject* const objectPtr, const maxon::Int32 subdivisions, const maxon::Bool sds)
{
	// Parameters for the modeling command
	BaseContainer modelingCommandParameters;
	modelingCommandParameters.SetBool(MDATA_SUBDIVIDE_HYPER, sds);
	modelingCommandParameters.SetInt32(MDATA_SUBDIVIDE_SUB, subdivisions);

	// Execute modeling command
	ModelingCommandData modelingCommandData;
	modelingCommandData.op = objectPtr;
	modelingCommandData.bc = &modelingCommandParameters;
	if (!SendModelingCommand(MCOMMAND_SUBDIVIDE, modelingCommandData))
		return false;

	return true;
}

Example usage:

BaseContainer cubeData;
basicObjectData.SetVector(PRIM_CUBE_LEN, maxon::Vector(100.0));
cubeData.SetInt32(PRIM_CUBE_SUBX, 2);
cubeData.SetInt32(PRIM_CUBE_SUBY, 2);
cubeData.SetInt32(PRIM_CUBE_SUBZ, 2);

PolygonObject* const objectPtr = static_cast<PolygonObject*>(GeneratePrimitive(nullptr, Ocube, cubeData, 1.0, false, hh->GetThread()));
if (!SubdividePolygonObject(objectPtr, 5, true))
	GePrint("Something went wrong."_s);

This works fine in R20 - R25, but returns false in 2023.
What could be the reason?

Cheers,
Frank

Thanks, you just recieved it!

Ah, sorry, it still happens under certain circumstances. I had to set this topic back to "Unsolved".

If it helps, I have narrowed it down to specific code that has to be in a .cpp file, in order to provoke the problem.
I can send you a tiny project that demonstrates it. What's the eMail again?

Cheers,
Frank

I found it!

In deed, I added two frameworks to the solution by hand. I also added the project references in my plugin project.

Creating a project reference manually in VS results in this block in the .vcxproj file:

    <ProjectReference Include="..\..\..\frameworks\cinema.framework\project\cinema.framework.vcxproj">
      <Project>{69bf9b7d-7eb2-7fc5-0009-38cb8c5cdea3}</Project>
    </ProjectReference>

But that's not sufficient, it needs to looks like this:

    <ProjectReference Include="..\..\..\frameworks\cinema.framework\project\cinema.framework.vcxproj">
      <Project>{69bf9b7d-7eb2-7fc5-0009-38cb8c5cdea3}</Project>
      <ReferenceOutputAssembly>true</ReferenceOutputAssembly>
      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
      <LinkLibraryDependencies>true</LinkLibraryDependencies>
      <UseLibraryDependencyInputs>false</UseLibraryDependencyInputs>
    </ProjectReference>

This fixed my build problems

Did you tried to generate the project files with the latest Project Tools?

I used the S24 Project Tool, which is the recommended one for R25 plugins.

Cheers,
Frank

Hi,

I started a vey small new R25 plugin project, and I constantly get linker errors. The project was, of course, generated using the S24 Project Tool.

cinema.framework_Debug_64bit.lib(c4d_pmain.obj) : error LNK2005: DllMain already defined in MSVCRTD.lib(dll_dllmain_stub.obj)
Creating library C:\Program Files\MAXON\Cinema 4D R25\plugins\testplugin\project_obj\testplugin\x64_Debug\testplugin.xdl64.lib and object C:\Program Files\MAXON\Cinema 4D R25\plugins\testplugin\project_obj\testplugin\x64_Debug\testplugin.xdl64.exp
..\testplugin.xdl64 : fatal error LNK1169: one or more multiply defined symbols found

Is there a commonly known reason why this could happen?

I already compared the .vcxproj file to the ones from my projects that are building fine, and couldn't find any significant difference. I even copied over the project file from cinema4dsdk, and simply swapped out the source files, it didn't help.

The funny thing is that the new plugin consists only of source files that I took from another plugin, to move them into a separate plugin project. So the sources definitely can be compiled and work. No problem in their original plugin project. Therefore, I deduct that there must be something wrong with the new plugin project.

Cheers in advance,
Frank

Hi Ferdinand,

thank you! In deed, that looks pretty simple. Wonder why I couldn't get it to compile...

I'll test this and report back in case it doesn't work. Since I guess you found it in active code, I'll mark this thread as solved for now. thanks again!

Cheers,
Frank

Hi Ferdinand,

thanks for your reply!

I am managing multiply PointerArrays, each for a different purpose, and I need to move their elements from one PointerArray to another. Since the objects the array elements point to are rather complex, I want to avoid copying them when moving them to another array.

PointerArray::ErasePtr() sounds like it does exactly what I want. The documentation says:

*ResultPtr<T> ErasePtr(Int position, T** dst)
Extracts a single element from the list and returns its pointer.
The caller takes ownership of the element.

I just can't figure out how to call it correctly, so I'll have the pointer removed from the array, and I end up with a pointer to the removed element of which I now have the ownership.

Cheers,
Frank

Hi,

short question, for some reason I can't figure this out...

I have a maxon::PointerArray<MyClass>, and I need to remove one of the elements, but without freeing the pointed object (instead, I'll add it to another PointerArray later). I believe, PointerArray::ErasePtr() is the correct function for this, but I can't get rid of the compile errors.

maxon::PointerArray<MyClass> array;

// Array is filled with objects
// This is done as described in the SDK docs:
MyClass* newObjPtr = NewObj(MyClass) iferr_return;
maxon::UniqueRef<MyClass> newObjRef = newObjPtr;
array.AppendPtr(newObjRef) iferr_return;
newObjRef.Disconnect();

// Remove an element from the array, so the array gives up the ownership, but the object still exists
// This obviously not working.
MyClass* formerElemPtr = nullptr;
array.ErasePtr(index, *formerElemPtr) iferr_return;

All I want is the element to vanish from the array, but I still need a valid pointer to it. What's the correct way to do this?

Thanks in advance.

Cheers,
Frank

You can read the "Changes in SDK" page in the R21 SDK documentation. And then, if it should run in later versions, too, you should probably also read the ones for R23 and R25.

Here's the S26 one:
https://developers.maxon.net/docs/Cinema4DCPPSDK/html/page_changes_in_sdk.html

And, as a tip for other developers, I want to add that the "Active Object Dialog" example plugin from the C++ SDK does a fabulous job exposing things like this, and visualizing the document's node hierarchy.

Whoever wrote that back in the days still deserves a medal

Then maybe it should be made an official guideline to insert shaders into materials with InsertShader(), and into a hierarchy of shaders with InsertUnder()

You're right, I think we did talk about this before. But I totally forgot, since it's not in the docs.

I also stumbled on this just today, and had the suspicion that BaseList2D::InsertShader() isn't the right function for this. Thank you @ferdinand for verifying that.

While it totally makes sense to use GeListNode::InsertUnder() when inserting shaders under shaders inside the shaders branch, I think it should totally be mentioned in the SDK docs. Ideally, as a big fat @note for the Doxygen description of BaseList2D::InsertShader(), as well as in the Shader section of the BaseList2D Manual.

Cheers,
Frank

@m_magalhaes Just chiming in here... any news on those C++ examples?

Cheers,
Frank

Okay, thanks!

Cool! Thanks for your community work, Kent!

Oh, ok. I assumed he just wanted to set the document min time and didn't know a better way to get a BaseTime than using StringToNumber.