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Poser - OFFICIAL F.A.Q (Updated: 2020 May 06 10:25 am)


 Subject: Does anyone know how to make a spiral track, as on a vinyl record?

SamTherapy opened this issue on Sep 10, 2020 · 18 posts

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  SamTherapy    ( ) ( posted at 10:40AM Thu, 10 September 2020 

Ideally for both 7" (Single) and 12" (LP) types.

I thought about scanning the damn things but that gives somewhat unsatisfactory results, even with the cleanest scanner glass and a near as dammit pristine record. Different colour vinyl doesn't seem to help, either.

The best I came up with so far is a series of thin, narrowly spaced concentric circles but the detail geek in me ain't satisfied with this.

Even a rudimentary spiral is a major pain in the rear end, it seems, so if anyone found a way to do it without causing endless pain, suffering, outbreaks of bad language and whatnot will have my gratitude.

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  hborre    ( ) ( posted at 11:20AM Thu, 10 September 2020  · @4399111

I assume that you will be creating a bump mappings for the vinyl discs? Considering how many circles it will take to create a decent disc, you may need to consider an image. If you have photoshop or GIMP, there may be a template available you can work with.


  ghostship2    ( ) ( posted at 11:21AM Thu, 10 September 2020  · @4399112

how about using a high rez tiff file for bump instead of modeling in all that detail?

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  NikKelly    ( ) ( posted at 11:40AM Thu, 10 September 2020  · @4399115

Have you considered applying a free hi-res image to a plain disk ?? Use grey-scaled image as a bump/displacement map ??

I reckon many CAD packages could craft a disk with actual groove, per 'turning thread on a bolt', but result would be very, very high-poly, akin to a complex terrain model...


  rokket    ( ) ( posted at 12:16PM Thu, 10 September 2020  · @4399119

How close do you intend to get to the vinyl to render? You may get away with a spec map that suggests the grooves instead of trying to create a bump map.

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  ockham    ( ) ( posted at 12:47PM Thu, 10 September 2020  · @4399123

If you can tolerate concentric, there's a record in my Broadcasting set with a fairly fine set of concentric circles plus spiral leadin and leadout. It's a bump map.

https://sharecg.com/v/88375/gallery/11/Poser/KDV-a-1930s-radio-station

You have permission to use the record or the map.

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  SamTherapy    ( ) ( posted at 12:52PM Thu, 10 September 2020  · @4399124

Thanks, all.

I really haven't considered modelling the detail in. Oh, not ever. I'm not daft, yer know. I've always wanted it to be a texture file and so far, I've been using a high res PNG, which is OK but I'd love something a bit more... spiraly.

@ockham: Many thanks. I'll take a look at it and may borrow some of it for my own use. If I ever release anything (doubtful, at least in the immediate future) I'll make sure you get the credit.

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  ockham    ( ) ( posted at 1:43PM Thu, 10 September 2020  · @4399133

Don't worry, I owe you some 'value' after using your Daleks often!

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  adp001    ( ) ( posted at 10:46PM Thu, 10 September 2020  · @4399176

Bildschirmfoto vom 2020-09-11 05-40-16.png

VenylDisk2.png


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  SamTherapy    ( ) ( posted at 1:00AM Fri, 11 September 2020  · @4399187

adp001 posted at 7:00AM Fri, 11 September 2020 - #4399176

Bildschirmfoto vom 2020-09-11 05-40-16.png

VenylDisk2.png

Would that work in Firefly? I don't use Superfly.

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  rokket    ( ) ( posted at 10:20AM Fri, 11 September 2020  · @4399237

It won't work in Firefly, Sam. It's a cycles material.

If I had a nickle for ever time a woman told me to get lost, I could buy Manhattan.


  SamTherapy    ( ) ( posted at 11:02AM Fri, 11 September 2020  · @4399245

Well, that's a bit of an embuggerance. :(

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  EldritchCellar    ( ) ( posted at 11:14AM Fri, 11 September 2020  · @4399246

It's the same as this for Firefly. I didn't faff with the spec or bump settings or even render it to see but it's essentially the same mat...

grooves.png



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  SamTherapy    ( ) ( posted at 1:26PM Fri, 11 September 2020  · @4399259

Cheers, mate! I'll give it a go.

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  adp001    ( ) ( posted at 2:08PM Fri, 11 September 2020  · @4399262

It works. But different.

Bildschirmfoto vom 2020-09-11 21-03-33.png

This may be a start to experiment. And set the bump intensity mutch lower. For me it is 0.02.

Anisotropic depends hardly on light. And needs high render values.


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  EldritchCellar    ( ) ( posted at 2:42PM Fri, 11 September 2020  · @4399264

Oh yes. The bump value in my screen shot is absurdly high. Funny because my go to default value for bump testing is 0.02 as you show (inches)

Also yes. Anisotropic is a very strong specular, probably why so many in the past have used it for specular on transparent materials like cornea and such.

Anyway...



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  adp001    ( ) ( posted at 3:03AM Sat, 12 September 2020  · @4399298

About anisotropic lighting in renders:

https://www.opengl.org/archives/resources/code/samples/sig99/advanced99/notes/node154.html


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  EClark1894    ( ) ( posted at 12:41PM Sat, 12 September 2020  · @4399325

It's something I have in the works, but I expected to have to get into before long. I planned to go with either a normal map or bump myself.

image.png


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