2024-09-28_glass.3dm (288.7 KB)
Only when I approch an IOR of 1, then the glass becomes somewhat transparent. I also tried using a physically based material, similar issue.
In rendered mode, the behavior is completely different, both for the glass material as well as for a physically based material. The latter behaves very well in rendered mode. But I would like to raytrace.
For spheres like that you’ll get heavy lense effect. It’ll look like there is no transparency, but there is. The sphere just acts like a very strong eyefish-type lense
Also, putting it over a shadows-only ground-plane isn’t very good to show the transparency, having a good environment will show it much better.
I didn’t realize the sphere is rendered as a solid object. I was assuming it is rendered as an object with infinitesimally thin walls, which seems to be what Rendered mode is doing. Giving the sphere a thickness by means of Thickening makes a big difference. Thank you for illustrating that!
Now I wonder how to apply thickening to ephemeral objects created by Grasshopper. What works is Weaverbird’s Mesh Thicken, but that requires a plugin. (or baking, but I tend to avoid that)
Update: For Grasshopper, I realize I can use MeshDifference to create a hollow object.
The current shaders don’t have thin film capabilities. That is why closed objects act like solid objects.
What do you mean by shaders? The one used in Raytraced mode?
Because, in Rendered mode, it looks like the sphere is treated as hollow. At 100% clarity, it is almost invisible.
I’m talking specifically about Raytraced and Rhino Render. The glass materials in Rendered mode aren’t all that great, there is no IOR at all
Yeah, or no volume, just infinitesimally thin surfaces, which should result in the same outcome.
Thanks!
That isn’t how Rendered mode works.
