problems with mesh rendering

Dear Jon and All

I wanted to ask a quick question

maybe the answer is simple

I generated a mesh with sdrInflate and made it to a module for boxmorph in GH

but when I render the mesh I get really strange result (ideally it should look like ETFE)

(please see image- looks like the upper layer is almost fine but the inside one gives this broken reflection) I tried several V-ray options and changing the material but never got the right result of glossy foil. but when I render only one mesh module all is just fine

it seems to me that the "box morph" is somehow damaging the mesh

ps. the module I had to divide and morph separately cause I didn't know how to apply the mesh and frame evenly so maybe this is the problem?)

I'm attaching the file with a sample cause whole surface was to heavy

Hope that anyone could help me

Thanks

Attachments:

proba.gh, 16 KB
proba.3dm, 4.6 MB

Replies to This Discussion

Permalink Reply by Jon Mirtschin on November 13, 2012 at 4:01am

It might be worth posting an example model with mesh (ready to render) to Rhino or vray forums. I don't have vray so I can't test here.

It's possible the some face vertex are in opposing directions (but this shouldn't be the case). I'm happy to look at fixing the cause of this if it can be identified.

Permalink Reply by Agnieszka on November 13, 2012 at 4:23pm

Thank you Jon

My hands are on it and I'm trying to work it out

Permalink Reply by RENE on November 13, 2012 at 1:00pm

Hi Agnieszka,

The Geogym inflated mesh is fine and so is the box morph; the only problem is your morph object. Vray does not like grouped geometry nor 'flat' geometry apparently, so:

1. ungroup the geometry you're morphing as well as the one you're baking

2. use Giulio Piacentino's mesh editor (weaverbird) to 'thicken' the inflated 'etfe' panels before baking

Hope it helps!

Permalink Reply by Agnieszka on November 13, 2012 at 4:22pm

Hi Rene

thank you for your reply

I'm trying now to follow your instructions

But could you tell me what expression did you put in the D input?

I have difficulties to set the correct number

Thank you

Permalink Reply by RENE on November 13, 2012 at 4:37pm

Hi again,

For sure, the expression was just " -D " so that the mesh was offset/thickened inwards to avoid clashing with the structure holding your panels; however, I did that after imputing the already-baked mesh in your rhino model; if you do it inside grasshopper then the process might be a bit different (but not necessarily, just check if all meshes are thickening in the same direction). Also make sure to 'flatten' your mesh geometry before thickening/baking! Good luck :)

Permalink Reply by Agnieszka on November 13, 2012 at 5:02pm

renders like a dream!

thank you Rene!

Permalink Reply by Agnieszka on November 13, 2012 at 6:05pm

sorry for bothering you again Rene

I'm getting an error when connecting a mesh to the WB component