Changing Material's Icon?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 01/06/2011 at 10:14, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   12
Platform:   Windows ;
Language(s) :   C.O.F.F.E.E ;    PYTHON ;

---------
Hi,
I've tried everything I can think of. But I can't figure out how to change the icon previews on materials.

I started with the basics:

var mat = doc->GetActiveMaterial();  
mat#MatPreviewFlat2D = true; //<---invalid ID

Then I tried getting at them from the material's container:

var mat = doc->GetActiveMaterial();  
var bc = mat->GetContainer();  
var preview = bc->SetData(MatPreviewFlat2D, true);//<--- member not found  
bc->SetContainer(preview);

Then I thought maybe that they weren't held by the material.
But held by another object(ID_MATERIAL_PREVIEW) inside of the material:

//No errors...But it doesn't do anything  
var mat = doc->GetActiveMaterial();  
var preview = mat#ID_MATERIAL_PREVIEW;  
preview = MatPreviewFlat2D;  
CallCommand(12252); // Render Materials updates the ICON

Nope.
Can anyone tell me what I'm doing wrong?
If it's not possible in Coffee. Then a Python or C++ solution is ok.

Thanks,
-ScottA

*Edit:
After more looking. I found a preview class in the C++ SDK.
It has a SetPreviewType(MatPreviewType t) method in it.
But I could not find these in the Python and Coffee SDK's. So does that mean that this is only supported in C++?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 02/06/2011 at 17:16, xxxxxxxx wrote:

Am I even close with this?
Or am I way off?

Bool SimplePlugin::Execute(BaseDocument *doc)  
{   
  BaseMaterial *mat = doc->GetActiveMaterial();  
  Bool Init(BaseMaterial* mat, LONG lCount);  
  MaterialPreviewData *MPD = What the heck goes here?  
  MPD->SetPreviewType(MatPreviewFlat2D);      
  
  return TRUE;   
}

-ScottA

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 06/06/2011 at 06:28, xxxxxxxx wrote:

It's possible through C++, probably Python too. The material preview is a custom data type which are not supported by COFFEE.

Example:

  
#include "customgui_matpreview.h"  
  
...  
  
Bool MenuTest::Execute(BaseDocument *doc)  
{  
  BaseMaterial *mat = doc->GetActiveMaterial();  
  if (!mat) return FALSE;  
  
  GeData d;  
  
  if (mat->GetParameter(DescLevel(MATERIAL_PREVIEW), d, DESCFLAGS_GET_0))  
  {  
      MaterialPreviewData *mp = (MaterialPreviewData* )d.GetCustomDataType(CUSTOMDATATYPE_MATPREVIEW);  
  
      // set the preview type, see the C++ docs  
      if (mp) mp->SetPreviewType(MatPreviewTorus);  
  
      mat->SetParameter(DescLevel(MATERIAL_PREVIEW), d, DESCFLAGS_SET_0);  
  }  
  
  mat->Message(MSG_UPDATE);  
  mat->Update(TRUE, FALSE);  
  
  EventAdd();  
    
  return TRUE;  
}

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 06/06/2011 at 07:54, xxxxxxxx wrote:

Thanks.
I was trying out every combination of GeData and SetParameter() I could think of over the weekend. But I just couldn't find the magic combination to make it work.

The SDK also confused me a lot. Because under "customgui_matpreview.h" it says that it must be created with Alloc. And then there's three different types of Init() functions.
I know now that those functions are for different things than setting the built-in preview types. But the whole experience was extremely confusing to me.

I hope the C++ SDK gets some sort of attention in the future. And a more clear way of explaining things to newer users is found. This C++ stuff is actually pretty easy to do when it's explained.
If I can be of any help in that area. Please let me know. I'm willing to volunteer some time to that.

Thanks again for the help,
-ScottA