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Just a few old, weathered bricks.
Genuine SDL, with area lighting, radiosity, focal blur and ground fog.
1h:14m on a P4 3.4GHz XP machine (MegaPOV 1.2.1)
Not too happy with the look yet - I think those reddish boxes somehow fail to
look like bricks for some unexplained reason.
Maybe I should try the isosurface approach after all. But how can you define a
box with rounded corners and holes in it as an isosurface?
Comments / suggestions anyone?
Post a reply to this message
Attachments:
Download 'bricks 2009-02-22 1641.png' (456 KB)
Preview of image 'bricks 2009-02-22 1641.png'
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"clipka" <nomail@nomail> wrote:
> Not too happy with the look yet - I think those reddish boxes somehow fail to
> look like bricks for some unexplained reason.
Looks pretty convincing to me!
> Maybe I should try the isosurface approach after all. But how can you define a
> box with rounded corners and holes in it as an isosurface?
If those aren't already isosurfaces, what are they?
Bill
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"Bill Pragnell" <bil### [at] hotmail com> wrote:
> Looks pretty convincing to me!
Thanks... hm... you really think so? Well, maybe I'm just being too
perfectionistic again...
> If those aren't already isosurfaces, what are they?
Hehe - well, in a way they are: After all, blobs can be regarded as a
specialized type of isosurface, right?
The bricks are plain vanilla CSG objects at the core (boxes, tori and
cylinders), but with the surface "eroded" irregularly using blob-sphere
"swarms" placed slightly above the original surface using the trace() function.
The mortar is basically a slightly modified version of the basic brick shape,
partially "chipped off" using the same principle with much larger blob-spheres
for the rough shape, before being union'd to the brick and the resulting shape
"roughed up" as described above.
Add some straightforward normal bumps for the fine-grained stuff.
Without any of the bells & whistles, it looks like this...
Post a reply to this message
Attachments:
Download 'bricks 2009-02-22 1941.png' (160 KB)
Preview of image 'bricks 2009-02-22 1941.png'
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They look like bricks to me. Just need to dirty them up. Perhaps a
slope-dependent texture would do the trick?
"clipka" <nomail@nomail> wrote in message
news:web.49a177ee737725aca38248380@news.povray.org...
> Just a few old, weathered bricks.
>
> Genuine SDL, with area lighting, radiosity, focal blur and ground fog.
>
> 1h:14m on a P4 3.4GHz XP machine (MegaPOV 1.2.1)
>
> Not too happy with the look yet - I think those reddish boxes somehow fail
> to
> look like bricks for some unexplained reason.
>
> Maybe I should try the isosurface approach after all. But how can you
> define a
> box with rounded corners and holes in it as an isosurface?
>
> Comments / suggestions anyone?
>
Post a reply to this message
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"clipka" <nomail@nomail> wrote:
> The bricks are plain vanilla CSG objects at the core (boxes, tori and
> cylinders), but with the surface "eroded" irregularly using blob-sphere
> "swarms" placed slightly above the original surface using the trace() function.
Very cunning. I wouldn't have thought of doing it that way.
I wrote some macros to make meshes from simple shapes and then erode them using
pigments - this helps a lot if your shape can't be easily represented by
isosurfaces. They're in the object collection - meshrelief.inc. Might be of use
for the bricks, at least.
Bill
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"Mike Hough" <nos### [at] nospamcom> wrote:
> They look like bricks to me. Just need to dirty them up. Perhaps a
> slope-dependent texture would do the trick?
Something like this?
Post a reply to this message
Attachments:
Download 'bricks 2009-02-22 2152.png' (282 KB)
Preview of image 'bricks 2009-02-22 2152.png'
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clipka nous illumina en ce 2009-02-22 11:06 -->
> Just a few old, weathered bricks.
>
> Genuine SDL, with area lighting, radiosity, focal blur and ground fog.
>
> 1h:14m on a P4 3.4GHz XP machine (MegaPOV 1.2.1)
>
> Not too happy with the look yet - I think those reddish boxes somehow fail to
> look like bricks for some unexplained reason.
>
> Maybe I should try the isosurface approach after all. But how can you define a
> box with rounded corners and holes in it as an isosurface?
>
> Comments / suggestions anyone?
>
>
> ------------------------------------------------------------------------
>
I never, ever, saw, in my hands, any brick with anything else than 3 holes, or
NO holes, in them. The only ones with 8 holes, I saw in rendered picture and
drawings, but not in photos with enough details to be able to count the number
of holes.
This gives me the impression that the 8 holed bricks are not real at all, but
only artistic representations.
That said, they look OK, but the mortar looks as if it's the same material as
the rest of the bricks. Only differing by colour, not texture, finish or grayniness.
--
Alain
-------------------------------------------------
EVERYTHING HAS A GENDER
You may not know this but many nonliving things have a gender...
A Subway is Male, because it uses the same old lines to pick people up.
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"Alain" <ele### [at] netscapenet> wrote in message
news:49a1cef7$1@news.povray.org...
> I never, ever, saw, in my hands, any brick with anything else than 3
> holes, or NO holes, in them. The only ones with 8 holes, I saw in rendered
> picture and drawings, but not in photos with enough details to be able to
> count the number of holes.
> This gives me the impression that the 8 holed bricks are not real at all,
> but only artistic representations.
Heh, well, here's one:
http://www.gachgomquangnam.com.vn/english/product_detail.jsp?item_id=R8T1,%20R8T2
And to be honest, I never knew they existed either.
~Steve~
> Alain
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Alain <ele### [at] netscapenet> wrote:
> I never, ever, saw, in my hands, any brick with anything else than 3 holes, or
> NO holes, in them.
So I thought, too (until today), but...
> The only ones with 8 holes, I saw in rendered picture and
> drawings, but not in photos with enough details to be able to count the number
> of holes.
> This gives me the impression that the 8 holed bricks are not real at all, but
> only artistic representations.
.... as it seems there is a whole lot of variations out there in real life:
http://de.fotolia.com/id/149019
http://de.fotolia.com/id/1979942
http://de.fotolia.com/id/10514708
http://de.fotolia.com/id/11801009
http://de.fotolia.com/id/3259349
Those with the squarish holes actually look quite familiar to me, so I guess I
have seen them in RL before and just didn't remember.
> That said, they look OK, but the mortar looks as if it's the same material as
> the rest of the bricks. Only differing by colour, not texture, finish or grayniness.
Post a reply to this message
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Yes, except now they look like they have been dusted with snow. Was thinking
more like a darker color to give the illusion of moss or dirt. But you could
leave it looking like snow and add some snow on the ground, maybe some grass
between the bricks...
"clipka" <nomail@nomail> wrote in message
news:web.49a1bbec1117cb13def162140@news.povray.org...
> "Mike Hough" <nos### [at] nospamcom> wrote:
>> They look like bricks to me. Just need to dirty them up. Perhaps a
>> slope-dependent texture would do the trick?
>
> Something like this?
>
Post a reply to this message
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