SunStudy Rhino 7 bug?

Hi All. When I create a “SunStudy” in Rhino 7.0 WIP and export as PNG single frames, I get shadow-anormalies in frame 5,11,16,17 in a standard animation setup from kl. 10:00 to 16:00 (20 min/passes). I have downsampled 18 singleframes from 1280x720 to 320x180 px and zipped them with a html-file. (957.8 KB)

I made a second test with more frames: (15min/passes) in the same period of time: kl. 10:00 to 16:00.
I include a Zip-file with the original renderings (1280 x 720), a screenshot and a html-file for preview.

I created a larger animation with 25 frames (downsampled from 1280x720 to 640x360).
In this animation the following 9 frames are abnormal: Frame #2,4,5,10,15,16,22,23,24
SunStudy (4.3 MB)

As a reference: Here is a Zip-file with the same SunStudy in Rhino 6.
Rhino_6 (11.0 MB)

Hi Tim - you are referring to the hard and soft shadows, correct? Can you post or send that Rhino file to, with a link back to this topic?


Hi Pascal.
I’m not allowed to share the 3D-file, but I have included a screenshot of my selected geolocation (Copenhagen, Denmark) and the selected time & date.

I also found a second error beside the alternating hard and soft shadows:
When asking for renderings for increments of 10 min AFTER testing 15 min, you only get 25 renderings in the period kl. 10:00-16:00, where you would expect to get 37. 15min increments in 6 hours=25 (10min increments in 6 hours= 37).

I uploaded the result from Rhino 6 SR 31, where it work as you would expect.

P.S. Maybe this has been solved in the final version. I have only tested WIP.

Hei Tim -

I was able to reproduce that issue here and created RH-61566 for a developer to take a look.

Hi Wim and Co

Thanks for getting back to me. I have attached a Rhino-file with “proxy-objects”.
Same problem with a different date. Zip-file includes two folders with my tests.



Hi Wim, Pascal and Co
Thanks for getting back to me. I have attached a Rhino-file with “proxy-objects”.
Same problem with a different date :slight_smile: Zip-file includes 2 folders with my tests.
Tim (15.4 MB) TeaLight_Proxy_Geometry_v7.3dm (5.9 MB) TeaLight_Proxy_Geometry_v7_PurgedAll_ExceptRenderMesh.3dm (5.9 MB)

Any progress on this issue? I need the functionality for a project in an “urban environment” very soon.