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"fidel viegas" <fid### [at] nodomain com> wrote in message
news:3E1### [at] nodomaincom...
> Hello guys, I was wondering if any of you have attempted to model a
> brain with povray.
> How would you go about creating such a complex structure?
>
> Thanks in advance
>
> Fidel.
>
I played around with doing this (for a brain coral).
Wouldn't do if the brain was the main component of the scene, but might be a
help if it's just a few of 'em in jars on a backshelf or something...
#include "functions.inc"
#declare F_1 = function(x,y,z){(pow(x,2)+pow(y,2)+pow(z,2)) +
f_ridged_mf(x*10,y*10,z*10,1,1,1,1,0,3)/5 - 2}
#declare Brain1 =
isosurface {
function {F_1(x,y,z)}
max_gradient 20
contained_by {box {-5,5}}
pigment { rgb<0.7,0.5,0.5> }
}
object{Brain1}
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ingo wrote:
> in news:3E1### [at] nodomaincom fidel viegas wrote:
>
>
>>Is there a good tutorial on how to
>>process df3 files?
>
>
> No, but there is a tga2df3 convertor at http://www.users.on.net/pod/df3/
Thanks for the link. I've looked into it already.
>>And what about its format?
> See 6.7.11.11 Density_File
I also read this on the documentation. Now I came across another program
called df3maker and it takes text version of the data and outputs the
binary version. I know how to create the binary file, but I have a doubt
regarding its format. I found the data below at the df3maker web site:
4,3,5
0,50,50,0
50,100,100,50
0,50,50,0
10,100,100,10
100,200,200,100
10,100,100,10
50,150,150,50
150,255,255,150
50,150,150,50
10,100,100,10
100,200,200,100
10,100,100,10
0,50,50,0
50,100,100,50
0,50,50,0
Ok, I understand the 4, 3 and 5, which are the dimensions of the cube in
x, y and z respectively. My question is how do we come up with the data
values? In the docs it had x*y*z, does it mean that each cell is the
result of multiplying x, y and z? For instance the second value 50, is
it the result of this multiplication?
Another question is regarding the tga2df3 converter. How does the 2D
grid of pixels found in a tga picture translate to a 3D grid?
I hope my queries are clear.
Thanks once again.
You guys have been great.
Fidel.
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