Material groups and shells - need help

[karlakurz]

Good morning everyone,

sun is rising and as well my question:

I opened a catia v5 part in VRED, which went well, and it turned out in separated surfaces combined in the "body note".

below you can also see my import preferences and the overwiev

The I created material groups and assigned serveral surfaces to them. They appeared in the groups combined to shells.

But why can`t I assign various different materials to the groups?

It turns out, VRED always displays the body in on colour, although the material groups contain different surfaces.

So I did split the surfaces into different material groups but VRED always displays the object in one colour rather than the different parts referring with several colours.

Whats the matter`?

[marcus_fritzen]

Hi Karla,

material groups are used to overwrite parts of the scene graph tree with a different material. You need to make sure that the material group has a material assigned. You can do that with drag&drop from the material editor onto the scene graph item.

But normally a material group is not necessary. Simply drag&drop the material onto the render view to assign it to a surface.

Cheers,

Marcus

[seiferp]

As Marcus wrote the material assignment is stored on a Shell level. The Material Group is usually used only for temporary overwriting multiple objects with one material like a clay look for example. So you don´t loose your initial material assignment.

[karlakurz]

Hi alltogether,

thanks for your replies. I absolutely agree witg your suggestions and your comments. I did it exactly as you wrot, but it doesn`t work out. I can never colour only parts of the object. Always the whole object is pigmented or inked.

As proof I did a video:

https://www.file-upload.net/download-13511600/Video.MOV.html

Hope, the video is not too bad?

[karlakurz]

here comes a better video displaying my problem

https://www.youtube.com/watch?v=59GTx-2CfqI&feature=youtu.be

[marcus_fritzen · Accepted solution]

Video not available...

[dangertaz1]

I'm having the same issue.  Even when I drag the material directly onto the surface node in the Scenegraph, the material is applied to unwanted surfaces.  I'll provide a video and a file tonight.

[marcus_fritzen]

How do you do that? Make sure to use a left mouse button drag. If you do it with the middle mouse button you will replace the material in the whole scene and not only on the dropped geometry.

Cheers,

Marcus

[dangertaz1]

Here is a recording of what happens:

The millennium falcon model is by Joshua Maruska, full credit to him.

I am left mouse dragging and dropping onto the individual surface in the scenegraph, but it still applies the material to the entire group.

[michael_nikelsky]

The objects are clones as it seems, that´s why they are underlined. Clones are using the same model and everything including materials. You can either unshare the nodes that you want to apply different materials to or create a material group above the cloned node and apply a material to this material group.

Kind regards

Michael

[dangertaz1]

Thank you, that worked.