Create texture from/instead of geometry?

I Hi I would like to cover :

with a simple script : (the circles are holes)

but the resulting amount of polygons is too much for my computer.

So I would like to create a transparency map that I apply to the form.

How would I approach that?

Replies to This Discussion

Permalink Reply by David Rutten on August 17, 2012 at 10:25am

There are currently no ways to create bitmaps and assign them as textures in Grasshopper.

The FireFly plugin has some image tools, but I don't know whether Andy provides texturing tools as well.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Vicente Soler on August 17, 2012 at 3:43pm

You can do it through a scripting component.

This definition places random holes around an object. It then creates a bitmap texture spherically mapped to the object. A mesh is also generated with spherically mapped texture coordinates. You just need to assign to the object a material the contains the generated texture as a transparency map. You can either use the mesh from the definition or apply spherical mapping to the original object.

Attachments:

holes.gh, 19 KB

Permalink Reply by wrogirzymian on August 18, 2012 at 2:13am

awesome, thanks

Permalink Reply by Vicente Soler on August 18, 2012 at 6:18am

What do you mean thanks?! That will be One Billion pesetas, please.

Dont worry, when we finally switch currencies that will be around 10 cents.

Permalink Reply by Cath Swan on November 28, 2015 at 11:18am

Hello Vicente,

I know this post is from a few years ago but your definition is very helpful for applying perforations to a cylindrical surface. I'm trying to further add attractor points to extrude the random holes at varying lengths. It would be great to hear your thoughts on how best to go about this. Thank you so much!!

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