Stefan Viljoen wrote:
> Are you going to make the macros available somewhere...? *hint!*

<AOL> Me too! </AOL>

-- 
   Darren New / San Diego, CA, USA (PST)
     I bet exercise equipment would be a lot more
     expensive if we had evolved from starfish.

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Very nice stone wall.  Some suggestions:

- Perhaps tone down the colour variation and degree of pitting of the 
stones.  In practice the stones would likely be quarried from the same 
place and would have less variation.  Still this is very pretty so make 
it a parameter ?
- A real stone wall would also need to be much thicker to stand safely
- The lintel would also have to be thicker (in height) and more deeply 
set (extending further beyond the left and right sides of the window space

The brick wall looks good at a distance.  In closeup I'd say that the 
mortar needs to be thinner and with a much finer pattern.  The brick 
texture looks smoother than in reality but of course adding the required 
roughness would be quite difficult.  I like the dirt / mold overlay.

I'd love to see progress so please keep us posted.

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> So far I have a more or less convincing brick texture (not perfectly 
> suitable for close-ups as can be seen in brickwall-zoomedin.jpg),

Good stuff Zeger,
Do you allow variability in the dimensions of bricks? I'm used to English 
style bricks which are not so elongated.
See http://www.sizes.com/materls/modular_brick.htm for a reference for 
different styles and dimensions. When bricks are laid and dressed some sort 
of bar (often cylindrical or square) is pulled along the cement leaving a 
concave depression - the grain follows the brick edges. Your closeup bricks 
appear to be projected over the cement resulting in an unreal feeling. Also 
there is too much cement.

As always, I look forward to more of your excellent work.

dlm

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"Stefan Viljoen" <spa### [at] removethispolardcom> wrote in message 
news:46a63dd7@news.povray.org...
> Nice - looks like the stonework in the old Bitmap Bros. Game "Gods"...

thanks :)
don't know that game though

> Are you going to make the macros available somewhere...? *hint!*

I hope to publish the macros one day, but I'll have to clean up the code 
first.

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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"Paul Fuller" <pgf### [at] optusnetcomau> wrote in message 
news:46a68d71@news.povray.org...
> Very nice stone wall.  Some suggestions:

thank you!

> - Perhaps tone down the colour variation and degree of pitting of the 
> stones.  In practice the stones would likely be quarried from the same 
> place and would have less variation.  Still this is very pretty so make it 
> a parameter ?

very true! as it is now, the macro only defines the location and size of the 
stones, another macro makes random stones, with random textures, which get 
scaled and positioned accordingly, so in a way, it already is a parameter, 
albeit not explicitely.  I believe this approach gives you the most 
flexibility.

> - A real stone wall would also need to be much thicker to stand safely

no problem, that can be adjusted

> - The lintel would also have to be thicker (in height) and more deeply set 
> (extending further beyond the left and right sides of the window space

again no problem :)

> The brick wall looks good at a distance.  In closeup I'd say that the 
> mortar needs to be thinner and with a much finer pattern.  The brick 
> texture looks smoother than in reality but of course adding the required 
> roughness would be quite difficult.  I like the dirt / mold overlay.

I might have an idea of how to make it look better, using the accuracy 
keyword in the normal-block.  The default value of .02 is way too high to 
make a rough look on that scale.
I'll have to do some tests though

> I'd love to see progress so please keep us posted.

will do :)

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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"dlm" <me### [at] addressinvalid> wrote in message 
news:46a6c19f$1@news.povray.org...
>> So far I have a more or less convincing brick texture (not perfectly 
>> suitable for close-ups as can be seen in brickwall-zoomedin.jpg),
>
> Good stuff Zeger,

thank you :)

> Do you allow variability in the dimensions of bricks?

absolutely, you can adjust the size of the bricks, and the way they're 
placed.  Currently, there are 2 types: type 0 (which looks like the normal 
brick pattern, but with more control over the shape and smoothness), and 
type 1 (which is what I showed here)

> I'm used to English style bricks which are not so elongated.
> See http://www.sizes.com/materls/modular_brick.htm for a reference for 
> different styles and dimensions.

that's interesting, I could use that for some default settings! thanks!

> When bricks are laid and dressed some sort of bar (often cylindrical or 
> square) is pulled along the cement leaving a concave depression - the 
> grain follows the brick edges. Your closeup bricks appear to be projected 
> over the cement resulting in an unreal feeling. Also there is too much 
> cement.

currently the cement is not affected in any way by the bricks, it's just a 
very simple granite-pattern.  I might change that, but as long as the bricks 
look too smooth for close-ups, I don't think it's worth the trouble, because 
you won't notice it anyway from a distance :)

> As always, I look forward to more of your excellent work.

thank you :)

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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Excellent start, Zeger! Impatient to see next stages.

Thomas

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I have two things to tell you Zeger
1. GREAT JOB!!!
2. I love the way you do the clouds. I have visited your page and seen your
fast clouds system. Is that "system" available? I would like to check it,
results look quite good.

*----------------------------------------------*
http://personales.ya.com/robertoullan/index.htm

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Hi,

very nice start!

You should avoid splices that are shaped like an "+". In the real world 
they lead to weaker walls.

Some years ago I did an arch macro for generating brick archs. Maybe 
it's of use for you:

http://b0n541.net/povray/povmacro.html

Just my two eurocents,

Bonsai

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   | _ )  \  \( )  _) _ )( )
   | _ \() |\ \ |\ \/ _ \| |
   |___/__/_)\__)___)/ \_)_)

        www.b0n541.net
<--------------------------->

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"Thomas de Groot" <t.d### [at] internlDOTnet> wrote in message 
news:46a6f4ca$1@news.povray.org...
> Excellent start, Zeger!

thank you !

> Impatient to see next stages.

as am I :p

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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