Question about AddUserPreviewScene

On 16/02/2018 at 10:22, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R18.057 
Platform:   Windows  ;   
Language(s) :     C++  ;  XPRESSO  ;  PYTHON  ;

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Hello PluginCafe,

I recently started plugin development in c++ and came across something I don't quite understand.

When experimenting with Materials and especially AddUserPreviewScene() i found (at least for me) something odd.

In my main.cpp I only have the usual PluginStart/Stop and Message methods.
In my PluginStart method I try to add a new preview scene for materials using AddUserPreviewScene.

Here is my problem:
When I am adding a scene to a ID which is from a custom material I made everything works fine, and the scene only shows up at my material.

According to the docs. when passing the ID 0 it should show up for every material. 
But it doesn't show up on any of the standard nor my custom materials.
I checked the returned value from AddUserPreviewScene which was true meaning everything should have worked.
So why am I not seeing my custom scene on any of the materials?

Hopefully someone can help me on that matter, really curious about that.

Thanks in advance, 
Florian

On 20/02/2018 at 01:47, xxxxxxxx wrote:

Hi Florian, thanks for writing us.

I confirm that the AddUserPreviewScene() doesn't work as reported in the documentation and passing 0 as ID value doesn't add a custom material preview scene to be used with any material. Passing instead a value of "-1" will do the trick ;).

I will update the documentation accordingly.

Best, Riccardo

On 20/02/2018 at 10:02, xxxxxxxx wrote:

Hello Riccardo,

thank you very much for the information 🙂

kind regards, 
Florian