POV-Ray : Newsgroups : povray.binaries.images : stainless steel coffee mug Server Time
16 Aug 2024 16:18:22 EDT (-0400)
  stainless steel coffee mug (Message 6 to 15 of 15)  
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From: Kevin R 
Subject: Re: stainless steel coffee mug
Date: 10 Feb 2002 14:05:46
Message: <3c66c48a@news.povray.org>
Schweet...  I don't suppose it comes with a plastic top for travelling?

- Kevin R.
-------------------------------------------
"We can lick gravity, but sometimes the
paperwork is overwhelming."
-  Wernher Von Braun, rocketry pioneer

"Chris Cason" <newsadmin-despam-@povray-no-spam.org> wrote in message
news:3c666cc9@news.povray.org...
> As mentioned in .general ...
>
> Note that mug-demo.jpg shows one that is slightly different from the real
> one (the handle shape). But it does show how the laser engraving comes
out.
>
> -- Chris
>
>
>


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From: Tony[B]
Subject: Re: stainless steel coffee mug
Date: 10 Feb 2002 14:12:53
Message: <3c66c635@news.povray.org>
I was thinking that using the "world" version of the logo which Mr. Colefax
made would be better for this.


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From: 25ct
Subject: Re: stainless steel coffee mug
Date: 10 Feb 2002 14:35:01
Message: <3c66cb65@news.povray.org>
"Chris Cason" <newsadmin-despam-@povray-no-spam.org> wrote in message
news:3c66bd6e@news.povray.org...

> Actually, that image is just a concept - I was wondering if we ought to
add
> something 'more' to it (like text in a circle, or some such).
>
> Ideas are invited.

       Is it possible to have your source for the cup Chris? Maybe we could
play around with the logo to see what comes up?

    ~Steve~


>
> -- Chris
>
>


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From: Timothy R  Cook
Subject: Re: stainless steel coffee mug
Date: 11 Feb 2002 17:04:20
Message: <3C683FE0.20D86685@scifi-fantasy.com>
Looks easy to tip over when full.

-- 
Tim Cook
http://empyrean.scifi-fantasy.com

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------


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From: Chris Cason
Subject: Re: stainless steel coffee mug
Date: 11 Feb 2002 21:42:49
Message: <3c688129@news.povray.org>
>        Is it possible to have your source for the cup Chris? Maybe we could
> play around with the logo to see what comes up?

ok - see p.b.s-f


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From: 25ct
Subject: Re: stainless steel coffee mug
Date: 11 Feb 2002 22:21:29
Message: <3c688a39@news.povray.org>
"Chris Cason" <newsadmin-despam-@povray-no-spam.org> wrote in message
news:3c688129@news.povray.org...
> >        Is it possible to have your source for the cup Chris? Maybe we
could
> > play around with the logo to see what comes up?
>
> ok - see p.b.s-f

    Many thanks. I love these kind of challenges.

    ~Steve~
>
>
>


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From: 25ct
Subject: Re: stainless steel coffee mug
Date: 17 Feb 2002 08:21:14
Message: <3c6fae4a@news.povray.org>
"Chris Cason" <newsadmin-despam-@povray-no-spam.org> wrote in message
news:3c688129@news.povray.org...

>
> ok - see p.b.s-f

    Hi Chris,  ok, I've had a little go at what I think you wanted. It's
nothing special, just a quick look at what the mug might look like with some
text. I'm hoping some others might be having a go at this, as the design
I've come up with isn't brilliant by a long way and I'd love to see what
they come up with...

   A few questions if I may?

I'm intrigued/puzzled/fascinated by your use of the image_map. How did you
know where to place it in the first instance with a 'complicated' image,
trial and error? Or is there a set way to determine this? I can guess that
the large area of free-space around your logo is to cover the rest of the
area on the mug, ie, the inside, outside of the mug, but why does it have to
be that way? Couldn't a smaller image be applied to one specific area of the
mug instead of having a large area of free-space? I don't understand this.

   Also, can you explain why it's a reversed/mirror image before applying?

   I'm totally thrown by this, but had great fun trying to line the image
up.  ;)

     ~Steve~



>
>
>


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Attachments:
Download 'mug6.jpg' (96 KB)

Preview of image 'mug6.jpg'
mug6.jpg


 

From: Leitha Hyde
Subject: Re: stainless steel coffee mug
Date: 18 Feb 2002 00:42:53
Message: <3c70945d@news.povray.org>
Where can I get one?

leitha


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From: Gilles Tran
Subject: Re: stainless steel coffee mug
Date: 18 Feb 2002 13:50:16
Message: <3c714ce8$1@news.povray.org>

3c6fae4a@news.povray.org...

> I'm intrigued/puzzled/fascinated by your use of the image_map. How did you
> know where to place it in the first instance with a 'complicated' image,
> trial and error? Or is there a set way to determine this? I can guess that
> the large area of free-space around your logo is to cover the rest of the
> area on the mug, ie, the inside, outside of the mug, but why does it have
to
> be that way? Couldn't a smaller image be applied to one specific area of
the
> mug instead of having a large area of free-space? I don't understand this.

I guess I can answer this one since I modelled the mug in Rhino. The answer
is simple : it's a uv-mapped mesh. The bitmap template is obtained directly
using uvmapper (the original obj file is needed for that). It's large
because it covers the whole surface of the mug, interior and exterior (the
handle has its own map, not used here). Note that it could be very easy to
change the template and rewrite the mesh uv coordinates to give more space
to the logotype (again, using the original obj). One problem though is that
the uv grid lines are not parallel so that distortion occurs (tricky to
fix). See the attached screen shot of the mug in uvmapper pro (demo) showing
the repartition of the map surface.

Note that the logo could be done with a regular plane or cylinder mapping
after getting rid of the uv info, but then the image would get replicated on
the other side or in the inside and the normals would be messed up on the
edges. For simple objects like this, it's possible to find workarounds for
regular povray mapping, but uv mapping is much more flexible.


>    Also, can you explain why it's a reversed/mirror image before applying?

For some reason, there are problems of inversion with meshes and their uv
maps. Basically original (obj) mesh geometry tend to be inverted after
conversion to povray. This may be fixed during the conversion process, but I
tend to follow the easiest path...

G.


--

**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters


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Attachments:
Download 'mugshot.jpg' (8 KB)

Preview of image 'mugshot.jpg'
mugshot.jpg


 

From: 25ct
Subject: Re: stainless steel coffee mug
Date: 18 Feb 2002 16:10:01
Message: <3c716da9@news.povray.org>
"Gilles Tran" <tra### [at] inapginrafr> wrote in message
news:3c714ce8$1@news.povray.org...


> 3c6fae4a@news.povray.org...
>
> > I'm intrigued/puzzled/fascinated by your use of the image_map. How did
you
> > know where to place it in the first instance with a 'complicated' image,
> > trial and error? Or is there a set way to determine this? I can guess
that
> > the large area of free-space around your logo is to cover the rest of
the
> > area on the mug, ie, the inside, outside of the mug, but why does it
have
> to
> > be that way? Couldn't a smaller image be applied to one specific area of
> the
> > mug instead of having a large area of free-space? I don't understand
this.
>
> I guess I can answer this one since I modelled the mug in Rhino.

    Gilles, my sincere apologies to you. I'm looking at the code now and see
your name....  :(

     My sincere apologies to Chris too....


 >The answer
> is simple : it's a uv-mapped mesh. The bitmap template is obtained
directly
> using uvmapper (the original obj file is needed for that). It's large
> because it covers the whole surface of the mug, interior and exterior (the
> handle has its own map, not used here). Note that it could be very easy to
> change the template and rewrite the mesh uv coordinates to give more space
> to the logotype (again, using the original obj). One problem though is
that
> the uv grid lines are not parallel so that distortion occurs (tricky to
> fix).


     Yes, as I found out. As I mentioned, I had great fun trying to line up
my version without some kind of distortion, but due to 'natural' distortion,
ie, the curve of the mug, I found it difficult to find the right
perspective, (which is why my version looks distorted towards the base even
after trying to distort the image to compensate in an outside paint
program).


See the attached screen shot of the mug in uvmapper pro (demo) showing
> the repartition of the map surface.
>
> Note that the logo could be done with a regular plane or cylinder mapping
> after getting rid of the uv info, but then the image would get replicated
on
> the other side or in the inside and the normals would be messed up on the
> edges. For simple objects like this, it's possible to find workarounds for
> regular povray mapping, but uv mapping is much more flexible.


    I see, thanks for that.


>
>
> >    Also, can you explain why it's a reversed/mirror image before
applying?


>
> For some reason, there are problems of inversion with meshes and their uv
> maps. Basically original (obj) mesh geometry tend to be inverted after
> conversion to povray. This may be fixed during the conversion process, but
I
> tend to follow the easiest path...

   Thanks. I understand a touch more now Gilles: I need to experiment with
UV mapping myself, (I haven't yet).

   I've learnt a bit from playing with this image though, which takes me a
bit further with my enjoyment in using PoV-Ray.

   Thanks for your informative reply.

      ~Steve~


>
> G.
>
>
> --
>
> **********************
> http://www.oyonale.com
> **********************
> - Graphic experiments
> - POV-Ray and Poser computer images
> - Posters
>
>
>
>


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