topic Re: Perforated Metal Look in Libraries & objects

Perforated Metal Look

Anonymous — Wed, 24 May 2023 10:48:41 GMT

Hello,

Does anyone know how I can emulate a perforated metal look on a wall. It's a dividing wall.

I tried creating a wall and putting a bunch of little circular windows in it, but that was taking forever to generate in 3D.

Any other approaches?

Does anyone have a perforated metal material with an alpha channel???

Thanks

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 16:16:52 GMT

would that be like this?

BTW: Alpha channels obsolete now.

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 16:19:24 GMT

LightWorks uses the red channel of an RGB image for transparency when referencing an ArchiCAD image after using the "Match Archiaic Method" button

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 16:20:08 GMT

and the texture

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 16:26:43 GMT

Depending on distance, squares might be better....
Combine two shaders:

color - whatever you want
transparency - Wrapped grid

width - horizontal band
height - vertical band
grid size - interval

I just happen to be doing the article on this today for the book. Will post later.

Re: Perforated Metal Look

Anonymous — Mon, 23 May 2005 16:52:14 GMT

What you posted is exactly what I'm looking for, but I don't follow your method.

I know I do something with the Jpeg of the holes, but from there I'm kinda lost.

No alpha channel, wow.

Re: Perforated Metal Look

Djordje — Mon, 23 May 2005 17:14:33 GMT

muddasick wrote:
Does anyone know how I can emulate a perforated metal look on a wall. It's a dividing wall.

Dwight explained the LightWorks approach.

If you have Art•Lantis, have fun with Holes Shader family (standard, comes with the basic installation)

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 17:27:48 GMT

Mr Moderator: You remind me of the Graphisoft person who, in a very Marie Antoinette way, said, "let them eat cake." Except she meant cake of a human source. And you know what happened to her.

The Graphisoft person actually said, years ago, in response to my complaint that ArchiCAD had bad materials, "Well, they can always buy the Artlantis shaders if they want something better…"

And, back to LightWorks, which is included with ArchiCAD and what this forum is about, there being a perfectly fine Abvent forum at www.abvent.com:

Once you create a material in the infernal engine, it can be transferred to LightWorks by using the "Match With Archiaic Infernal Engine" button.

LightWorks will look at the settings and if you have checked the transparency box for alpha channel, it will emulate that by using the red channel of the texture. Since the holes are black, it understands that they are to be transparent, lacking any red. The jpeg I posted has no alpha channel - but the perfs show in Lightworks

Re: Perforated Metal Look

Djordje — Mon, 23 May 2005 17:33:45 GMT

Dwight wrote:
Mr Moderator: You remind me of the Graphisoft person who, in a very Marie Antoinette way, said, "let them eat cake."

Mr Scribe ...

I said IF

Not meant to belittle LightWorks, or your exquisite efforts.

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 17:43:40 GMT

Its not you.

There are so many better ways to render than the way Graphisoft has currently implemented LightWorks. I feel that I am an apologist for this, and that every lighting trick "Think Like A Photographer," or material trick "perforated metal" is supplanted by a switch or a button in a more advanced rendering situation.

I am frustrated by comparing what the LightWorks web site shows for a real time preview, radiosity, a fine sketch render engine, and a panorama of global illumination, scenery and lighting setups that make the PROMISE of using LightWorks SO MUCH BETTER than Artlantis - yet plugged directly into our program.

Someday.

Re: Perforated Metal Look

Anonymous — Mon, 23 May 2005 18:38:33 GMT

Dwight,

I used your setting and came up with this.

If I wanted to show more metal and less holes would I have to create another "dot" pattern to use?

Why is the metal part so dark?

Thanks as usual for all your help..

Re: Perforated Metal Look

Dwight — Mon, 23 May 2005 21:59:38 GMT

Erase a hole.

Metal part needs more reflection.

Re: Perforated Metal Look

Anonymous — Thu, 14 Jul 2005 23:52:00 GMT

This is aimed at Dwight, but if anyone else can help I would appreciate it (he probably would too, he's got a book to get out!)

I have an image of a school crest which I want to show on a gable of a new building. What do I have to do to the image to get the white background to become transparent? I am using it in conjunction with the ParaPicture object Dwight postsed a while ago, and PaintShop for image editing.

Thanks

Re: Perforated Metal Look

Anonymous — Thu, 14 Jul 2005 23:52:56 GMT

... and the result....

Re: Perforated Metal Look

Dwight — Thu, 14 Jul 2005 23:56:41 GMT

You'll make an alpha channel mask to allow ArchiCAD to make the image transparent - how to do that in Paintshop Perp (attitude) is not for me to know.

The parapicture has a checkbox for the alpha channel I believe.

use best render method.

Re: Perforated Metal Look

Anonymous — Sun, 17 Jul 2005 21:42:40 GMT

Thanks for your help Dwight. Got the mask to work after a bit of experimentation.

Cheers

Re: Perforated Metal Look

Anonymous — Fri, 22 Jul 2005 15:24:37 GMT

I just stumbled across this thread today, and I found it to be rather intriguing, I didn't realise that lightworks used the red colour channel for alpha... very interesting. anyway though, I tried to emulate this material n my machine, and I can't seem to get it right, the holes are just showing up as black dots... what am I missing here almighty Dwight (or anyone else who wants to answer )

cheers,
Dan

BTW where's your book? I want, I want, I want !!