black when rendered in rhino

Hi,

I know this is a website dedicated to Grasshopper, but since Grasshopper and Rhino are so closely tied, I thought of posting for help with Rhino here.

Alright, I have a site model of an urban area, and I am trying to render it very simple and basic, but when i try to render it, it comes out as black. All of it.

I have already selected the objects > Properties > [pull-down menu] Material > Assign by > Layer.

I even tried adding light to the scenery, but it wouldn't make any difference.

Please, see image for a clearer image of my problem.

Attachments:

ww.png, 215 KB
e.png, 505 KB

Replies to This Discussion

Permalink Reply by christine on February 7, 2017 at 4:47pm

this is an SOS.

i have a presentation coming tomorrow. thanks. love n kisses.

Permalink Reply by Birk Binnard on February 7, 2017 at 10:45pm

this is just a guess - the black things look like trees. So could their shapes be so complicated that their black contour lies are so numerous they make the whole tree look black?

Permalink Reply by David Rutten on February 8, 2017 at 2:41am

What exactly do you mean by "render it"? Are you using the Render command, or some sort of rendered viewport mode? The image you posted is of a viewport, but in the command history it says "rendering time 8 seconds".

Permalink Reply by christine on February 8, 2017 at 3:22am

Thank you for your quick response!

Birk Binnard,

In the shaded view if i zoom in to the tree, its all ok.

but when i hit render it all turns black, and the trees too.

David Rutten

i mean that i hit the blue circular button in the top left side of the viewport.

Then it automatically opens the render window, and the result is a total black image.

Im sooo confused. Also, every time i hit render, thats what appears...

The second pic shows the rendering result...

Permalink Reply by David Rutten on February 8, 2017 at 4:38am

Ok, so the question is what sort of light sources are there in your model? If there are no lights, everything will appear black. (There are other possibilities as well, for example the camera location could be inside a closed shape without light on the inside).

Can you upload that file (just some of the shapes that you're happy to share, try to keep the file small) so we can test whether it's black here as well? I can't test properly because I don't have Rhino5 any more (I only work in Rhino6 now), but if the result is black for a good reason hopefully that won't have changed.

Permalink Reply by Yoann Mescam (Systemiq) on February 8, 2017 at 5:00am

I think David found the problem: your spotlight in the "e.png" screenshot is facing the wrong way, and thus only lighting the sky. (animated gif demo below)