RAYTRACED GRAPHICS / ODDSPHERE -E

Last Update Aug 30, 1998 　日本語はこちら

NUMERICAL SPACE / ODDSPHERE

Mr. Suzuki's isosurface patched POV-Ray 3.0

For example, I show the scene file of "Cutted odd sphere". I made this from the sample file of "odd_sphere" by Mr. Suzuki. I made other works in this page by similar scene files with this. This complicated shape is generated from only four value!

・pov file
#version 3.0
#include "colors.inc"
#include "textures.inc"
light_source {<5, 10, 5> color White}
#declare D3DFUNC = function {"odd_sphere", <1, 0, 0.4>,

library "i_dat3d", "lpodcut.dat", <3,3,3,0>}
#declare ISOCOL= pigment { function {D3DFUNC} color_map
{ [0.3, 0.2 color rgbt <0, 1, 0, 0.6> color rgbt <0, 0, 1, 0.5> ]
[ 1, 1.001 color rgbt <1, 0, 0, 0.5> color rgbt <0, 0, 1, 0.5>] }
frequency 0.3 }
camera { location <20, 10, 20> angle 38 look_at <0,-3,0>}
object{ isosurface { function {D3DFUNC}
bounded_by {box {<-12, -12, -12> <12, 0, 12>}}
eval max_gradient 10 accuracy 0.015 max_trace 4 }
pigment {ISOCOL}
finish { phong 0.3 diffuse 1 ambient 0.6 }
rotate y*150 no_shadow }

・data file : lpodcut.dat
2.3
2.44
-2.99
-3.1

I cut off the upper half and used transparency 0.5-0.6 to see the inside of the object. Of cource I aimed to show this beauty. You can see many openings inside or the colored section variously based on the field strength.

Cutted odd sphere / 44k / Aug. 1998 / by Tsutomu Higo

We can make another shapes from the same data with modifying the array of the data. I changed from ["lpodcut.dat", <3,3,3,0>] to ["lpodcut.dat", <1,3,4,0>]　and got this metamorphosed shape.

Metamorphosed odd sphere / 46k / Aug. 1998 / by Tsutomu Higo

We can get multiplied object from one odd-sphere function with using big value as the data. In this work I used this data.
-50.5
0
50.8
-5.1

Multiplied odd sphere / 82k / Aug. 1998 / by Tsutomu Higo

I cut off the upper area and down area using [ bounded_by { box { <-25, -3, -25> <10, 0, 10> } } ] to pick up one layer of spheres.
And additionary, I made a fun. I used [ accuracy 7.2 ]. The value is so big that spheres can't be figured. They changed to discs colored concentrically.

Arrayed odd sphere / 43k / Aug. 1998 / by Tsutomu Higo

I got this image with [ accuracy 0.05 ].
The value of accuracy is not so small that the surface is not smooth, having many fine discontinuous lines. But the fine discontinuous lines give a sort of texture in the image.
You may not be able to see the lines enough in this small image. Please see the large image file.

Dancing odd sphere / 68k / Aug. 1998 / by Tsutomu Higo

I use this coloring ;
#declare ISOCOL = pigment {
function { D3DFUNC }
color_map
{ [0.5, 0.01 color rgbt <0, 1, 0, 0.5>
color rgbt <1, 1, 0, 0.5>]
[1, 1.001 color rgbt <0,0,1, 0.7>
color rgbt <1, 0, 0, 0.5>] }
frequency .7 }

From the location of [ camera ] many spheres are piled up and we can see a sight like a valley.

Piled odd sphere / 68k / Aug. 1998 / by Tsutomu Higo

I'm surprised with the rendered result from one function. There are so many intricated surfaces.
I may say this odd sphere a micro cosmos metaphorically like the isosurface patched POV-Ray.

Cruising among odd sphere / 51k / Aug. 1998 / by Tsutomu Higo

NUMERICAL SPACE / ODDSPHERE

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