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3D Patterns on Compound Surfaces/Solids

Postby love2draw » August 10th, 2017, 8:52 am


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I am interested in a plug-in solution that could work side-by-side with Solidworks or Rhino 3D that would allow creating unique 3D patterns and apply them over a compounded surface. I am not interested in rendering at this point, I need to create real geometry that can be 3D printed.

I've heard about Zbrush but I am more interested in Plug-ins for Solidworks or Rhino.
I've attached a few images to describe what I am looking for.

Thanks for your help!
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7_xtreme_cooling.png
3D Texturing around grip areas
7_xtreme_cooling.png (89.71 KiB) Viewed 1160 times
text.jpg
text.jpg (71.59 KiB) Viewed 1160 times


Brian_Donlin
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I think this is the type of stuff you can do with Grasshopper.

Re: 3D Patterns on Compound Surfaces/Solids

Postby Cyberdemon » August 10th, 2017, 12:08 pm

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Grasshopper can be used, there have been some other discussions on this in the past as well if you search the software section:

ex
viewtopic.php?f=4&t=36031

Depending on your intent depends on how complex things become. The top square mesh pattern is probably fairly easy to achieve using a combination of wrapping features/projected curves and a good bit of manual labor. The second more random fractal is quite a bit more complex in a typical CAD tool. The picture shown looks like it's from a Sub D modeling tool, but I could be wrong. That level of surface complexity, especially if you try to wrap it around a surface would be very intensive. You may be better looking at an in mold texturing process at that point rather than pure CAD.

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louis leblanc
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Looks like both of these could be made fairly simply using Grasshopper. The first is a regular grid while I think you could make the base for the second one using a Vironoi mesh.

Re: 3D Patterns on Compound Surfaces/Solids

Postby KenoLeon » August 10th, 2017, 9:28 pm

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+1 on grasshopper,for what is worth this sort of of texturing is trivial on Z brush, the problem is that you lose control since you are using a brush and creating any type of geometric shape is really difficult on the entry level version, I've had some success by importing geometric shapes, then applying texture and then exporting, although you end up with a mesh back in rhino you need to remodel for splines, I'll post a more detailed look at Z brush whenever I get some time, it does have it's uses and you feel like a kid playing with mud vs a CAD jockey.
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You can use Zsurf for getting a textured surface based on image input. However Grasshopper is the best tool for this type of geometry and embeds a Voronoi function. I will be happy to work with you on this if you want.
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Re: 3D Patterns on Compound Surfaces/Solids

Postby love2draw » August 11th, 2017, 7:51 am


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Thank you all for the replies.
I will look into Grasshopper for now as it seems will come standard on Rhino 6.
I am surprised that SolidWorks does not have a plug-in (as far as I know) that could be based on grasshopper principles.
Maybe a matter of time.

Thanks again!

Re: 3D Patterns on Compound Surfaces/Solids

Postby cadjunkie » August 11th, 2017, 6:27 pm


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@love2draw: Grasshopper is absolutely the LONG way to go about doing this. Though it can be done it's just way more work than needs to be done.

This is 100% perfect for something like zBrush. I've long said that the CAD world is severely lacking behind some of these VFX application when it comes to applying textures like this on geometry. Take a look a this vid just to see how this works. Keep in mind this can be 2D or 3D displaced geometry and still go to manufacturing.

[youtube]https://www.youtube.com/watch?v=fTs9f7ccAUo[/youtube]

Re: 3D Patterns on Compound Surfaces/Solids

Postby engelhjs » August 11th, 2017, 6:34 pm


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The Flow Along Surface command in Rhino works okay, too. You build the pattern over a flattened approximation of the 3d surface you want to map it to (the flatten and/or smash commands are helpful there) and through a few steps translate that flat pattern onto the 3d target surface. It's finicky and not always precise, but works within the normal Rhino workflow whereas Grasshopper is its own crazy beast, very different from your typical modeling workflow.
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Re: 3D Patterns on Compound Surfaces/Solids

Postby KenoLeon » August 11th, 2017, 8:14 pm

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To expand on my answer here's a quick experiment with Z Brush and Rhino:

Make/ Import a bottle model from Rhino, using a mask block the space where you would hold it with your hand and manually sculpt some grooves:


zBrushTexturing.jpg
zBrushTexturing.jpg (32.93 KiB) Viewed 758 times


While the bulk of z Brush is devoted to you sculpting with a virtual clay instruments ( rake, clay buildup, inflate, etc) , you can also use images as alpha brushes, which actually displace polygons on top of the previous solid ( I am using the image up top, which was not optimized in any way):

zBrushTexturing2.jpg
zBrushTexturing2.jpg (47.25 KiB) Viewed 758 times


And you can reimport it back to rhino; my guess is that if you where doing production prototypes or final ones you would rebuild the surface natively in rhino to have absolute control, but if you just want to validate your design, render it or even 3d print it this whole process took like 10 minutes...

zBrushTexturing3.jpg
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Re: 3D Patterns on Compound Surfaces/Solids

Postby cadjunkie » August 11th, 2017, 10:54 pm


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@Keno: you could take it even a step further and use the image to mask with and then use the extract command....:)

Anyone who thinks that grasshopper for this kind of thing would be quicker is definitely smoking some serious doobies!!!

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louis leblanc
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cadjunkie wrote:@Keno: you could take it even a step further and use the image to mask with and then use the extract command....:)

Anyone who thinks that grasshopper for this kind of thing would be quicker is definitely smoking some serious doobies!!!


:lol: out of curiosity, I tried it in grasshopper and got it done in about 1.5 hour - it's also my first time really using Grassopper in a surfacing/meshing capacity. I typically use it for stuff more closely related to architecture. It's certainly doable but I wouldn't call it trivial. It's probably way faster to do it with some kind of 2D mapped displacement method. You could always use Grasshopper to make the 2D asset... :roll:

texturePattern.PNG

Re: 3D Patterns on Compound Surfaces/Solids

Postby KenoLeon » August 12th, 2017, 1:54 pm

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cadjunkie wrote:@Keno: you could take it even a step further and use the image to mask with and then use the extract command....:)


I have the cheap version ( Z Brush Core ) which is very limited (this feature, useful brushes and features are missing) , the step up is around $700-$1,100 :(
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Re: 3D Patterns on Compound Surfaces/Solids

Postby MK19 » August 12th, 2017, 8:11 pm


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Using the image method assumes you already have the image ready and to a proper quality. If you have to make that yourself it is likely as fast to use Grasshopper. Though admittedly the ability to do as such in Grasshopper is a rare skill in Product Design.

Re: 3D Patterns on Compound Surfaces/Solids

Postby holtag » August 13th, 2017, 5:52 am

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You can also try the ApplyDisplacement command in rhino. It's basically a bump map that gets the height values from a grayscale bitmap. It's pretty memory intensive, and the output will be mesh, but it might be a valuable shortcut for some projects.

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