topic Re: Lines in transparent materials in Visualization

Lines in transparent materials

David Bearss — Thu, 11 May 2023 11:41:32 GMT

I am experimenting with a rendering techinique and want to include transparent and translucent materials. I have created some different transparent materials with different transparency and color and then I have created some tree forms from slab tool and applied a transparent material to get desired effect. Sometimes the trees show grid lines acros them. When I apply the material to a large slab or wall there are no lines. Am wondering if the complexitiy of the tree form is causing?

Re: Lines in transparent materials

Dwight — Sat, 04 Oct 2008 22:15:51 GMT

Try another file format for the image.

Re: Lines in transparent materials

David Bearss — Sat, 04 Oct 2008 22:57:30 GMT

Sorry Dwight,
Not sure what you mean by that.

Re: Lines in transparent materials

Dwight — Sat, 04 Oct 2008 23:00:57 GMT

i take it back.

i thought you were using images......

Re: Lines in transparent materials

David Bearss — Sat, 04 Oct 2008 23:48:21 GMT

No probs.
And sorry for the delayed response. Distracted by Youg Frankenstein.
Any other ideas? Any possibility that the complexity of the slab perimeter could have an effect?

Re: Lines in transparent materials

Mats_Knutsson — Mon, 06 Oct 2008 08:12:01 GMT

David wrote:
No probs.
And sorry for the delayed response. Distracted by Youg Frankenstein.
Any other ideas? Any possibility that the complexity of the slab perimeter could have an effect?

Off topic...do you windsurf??? Hood river... If you don't... could we switch offices?
😉

Re: Lines in transparent materials

Anonymous — Mon, 06 Oct 2008 08:57:13 GMT

Seems like there is a fill applied to the material you use. Give it a check!

Re: Lines in transparent materials

Anonymous — Mon, 06 Oct 2008 13:33:35 GMT

Something else came to my mind:

AC doesn't like slabs with zero thickness, so if you have used such one, it could be the problem.

Would you post the rendering when you finish it? It would be interesting to have a look at it!

Re: Lines in transparent materials

David Bearss — Mon, 06 Oct 2008 15:28:22 GMT

Mats,
Windsurf I do! One of the main reasons I am here. 30 mph plus winds and 8 foot waves....on a river!

Back on topic, kliment,
I did experiment with different GS glass materials and made the material I used from the GS glass material. Did experiment with thickness and had my slab thickness set at 1/4". Thicker did not make any difference. So far have found that the complexity of the perimeter of the slab seems to have a direct effect. It is odd though that I can apply the same material to a vehicle with clean results.

Re: Lines in transparent materials

Dwight — Mon, 06 Oct 2008 15:52:13 GMT

Sweden should have wind skating!

Canadian wind skating.

Re: Lines in transparent materials

Dwight — Mon, 06 Oct 2008 16:07:58 GMT

What if you make a complex profile wall with the shape instead of a slab? Any difference?

Just like all things can be made a complex profile, all words come from Greek.
"Kimono," for instance.

Re: Lines in transparent materials

David Bearss — Mon, 06 Oct 2008 16:24:14 GMT

Have not tried that. And to be sheepishly honest I have not even tried using the complex profile. I will have to experiment with that this evening.

Re: Lines in transparent materials

David Bearss — Mon, 06 Oct 2008 16:50:47 GMT

Well the profile tool is cool and easy. However the lines stil appear. Might note that as i rotate the view around the line seem to be related to screen position and view angle rather than directly associated to the object.

Re: Lines in transparent materials

David Bearss — Mon, 06 Oct 2008 16:51:35 GMT

Same tree different angle view

Re: Lines in transparent materials

Erika Epstein — Tue, 07 Oct 2008 00:06:05 GMT

why don't you post a file with one of the elements that show the grid

Re: Lines in transparent materials

Karl Ottenstein — Tue, 07 Oct 2008 03:22:08 GMT

Right. Select one tree and 'save selection as module' - it'll give us the tree and the material to study.

Karl

Re: Lines in transparent materials

Erika Epstein — Tue, 07 Oct 2008 03:47:00 GMT

Tree slices, what a fun idea!
The tree I created I stretched to make 25' wide. I rotated 3 more around its central axis.
I then shrunk the tree slice to 3' high, 2' wide, keeping its thickness at 1/8".

No lines.

The lines on yours look like they might be a cover fill as others have suggested. Look close, its not a grid, but perhaps a roof shingle ?

Great idea

Re: Lines in transparent materials

David Bearss — Tue, 07 Oct 2008 03:59:31 GMT

I will post these two trees. These are more complex versions that seem to have more lines running through them. Also the darker one has lighter splotches in them as an added bounus. Weird.

Re: Lines in transparent materials

David Bearss — Tue, 07 Oct 2008 04:03:37 GMT

Um, sorry to have to ask, but, where would I post the module?

Re: Lines in transparent materials

Dwight — Tue, 07 Oct 2008 04:03:46 GMT

Consider putting a texture on the material - like an image of noise.