that hurts, makes my eyes go funny

Rick

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Margus,

I made an attempt at this last night (and failed)...  I could figure out how
to make the shape I wanted using an object pigment, but I couldn't figure
out how to tile it without just writing a loop that csg's the objects
together.  How did you do the tiling?

-autowitch

p.s. (if this posts twice, I apologize - my newsreader is really losing it
today)
--
duncan gold [TurboPower Software]

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Wlodzimierz ABX Skiba wrote:
> 
> You mean this ?
> 
>     #local FunPig1=function{pigment{object{Obj1 color 0 color 1/3}}}
>     #local FunPig2=function{pigment{object{Obj2 color 0 color 2/3}}}
>     #local FunPig3=function{pigment{object{Obj3 color 0 color 1}}}
>     #local EscherFunction=function{FunPig1+FunPig2+FunPig3}
> 
> ABX

Ah, yes. I suspected something like this, but couldn't quite figure it out.
Thanks!

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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autowitch wrote:
> 
> How did you do the tiling?
> 

You have two options (that I can think of).

1) Use the repeat warp. For example, to get a <0,0,0>-<1,1,1> slice of your
texture to tile in 3D, you need 3 consecutive repeat warps:
warp{repeat x}
warp{repeat y}
warp{repeat z}

2) The way I did it was to modify the (x,y,z) parameters in the function call,
like this:
function{
    My_pigment_function(
        abs(x)-floor(abs(x)),
        abs(y)-floor(abs(y)),
        abs(z)-floor(abs(z))
    )
}
This also tiles a <0,0,0>-<1,1,1> slice of the pattern in 3D - but if I'm not
mistaken, the pattern is mirrored at the origin.

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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Well it's incredible.  I think I'm understanding it more as time goes on.

Bob

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Obviously guessing how something is done without knowing all the possible
tools and/or techniques available can get a person nowhere.  I was trying to
think of how the old-fashioned texturing methods would create it.

Bob

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"Bob H." wrote:

> Obviously guessing how something is done without knowing all the possible
> tools and/or techniques available can get a person nowhere.  I was trying to
> think of how the old-fashioned texturing methods would create it.

Me too. I think a lot of people try to do that.

...and people with pirated versions of Max realize that and use it to their
advantage...

--
David Fontaine  <dav### [at] faricynet>  ICQ 55354965
My raytracing gallery:  http://davidf.faricy.net/

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> 2) The way I did it was to modify the (x,y,z) parameters in the
function call,
> like this:
> function{
>     My_pigment_function(
>        abs(x)-floor(abs(x)),
>        abs(y)-floor(abs(y)),
>        abs(z)-floor(abs(z))
>    )
> }
> This also tiles a <0,0,0>-<1,1,1> slice of the pattern in 3D - but if
I'm not
> mistaken, the pattern is mirrored at the origin.


why you absolute coordinates ?

My_pigment_function(x-floor(x),y-floor(y),z-floor(z))

ABX

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Wlodzimierz ABX Skiba wrote:
> 
> why you absolute coordinates ?
> 

Because, if I'm not mistaken, that mirrors the pattern at the origin :)
In my case, that was the desired effect. Otherwise, repeat warps can do the job
and are probably easier to understand.

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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would it be cheating to print the fish onto a cylinder?

-- 
Anton Sherwood  --  br0### [at] p0b0xcom  --  http://ogre.nu/

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