Material Being Used

Helper

On 24/07/2018 at 09:14, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R14
Platform:   Windows ; Mac ;
Language(s) :     C++ ;

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Is it possible to get whether a material is currently being used in a scene? In a similar way to how Remove Unused Materials checks, but without the deleting step.

Dan

Helper

On 25/07/2018 at 02:21, xxxxxxxx wrote:

Hi Dan,

You can read the assignment data with the following code

Bool MyCommand::Execute(BaseDocument* doc)
{
	BaseMaterial* mat = doc->GetActiveMaterial();
	if (mat == nullptr)
		return true;
  
	GeData d;
	if (!mat->GetParameter(DescLevel(ID_MATERIALASSIGNMENTS), d, DESCFLAGS_GET_0))
		return true;
  
	MatAssignData *mad = (MatAssignData* )d.GetCustomDataType(CUSTOMDATATYPE_MATASSIGN);
	if (mad)
		GePrint(String::IntToString(mad->GetObjectCount()) + " objects");
  
	return true;
}

If you have any question, please let me know.
Cheers,
Maxime