File:Yellow dwarf star image 1.png
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Captions
Captions
Yellow dwarf star spots and granulas
Summary
[edit]
| Description |
English: Yellow dwarf stars have granulated surface and magnetic spots |
| Date | |
| Source | Own work |
| Author | Merikanto |
Povray 3.7 source code
// povray 3.7 code to generate yellow dwarf star
- declare Yellow =rgb <1,1,0>;
- declare White= rgb <1,1,1>;
- declare Black =rgb <0,0,0>;
- declare Red=rgb <1,0,0>;
- declare Orange=rgb <1,0.5,0>;
- declare YellowOrange=rgb <1,0.75,0>;
- declare YellowYellowOrange=rgb <1,0.825,0>;
- declare LightBlue=rgb <0.5,0.5,1>;
- declare DarkYellow=rgb <0.25,0.25,0>;
//#declare tauorig=
// DEBUG
//#declare taunolla=0;
- declare taunolla=clock+180;
- declare tau=radians(taunolla);
- declare tau2=radians(taunolla+180.0);
- declare ra=2;
- declare rb=2;
- declare ax = sin(tau)*ra+1;
- declare ay = cos(tau)*ra;
- declare bx = sin(tau2)*rb-1;
- declare by = cos(tau2)*rb;
- declare sax=ax*1;
- declare say=ay*1;
- declare sbx=bx*1;
- declare sby=by*1;
camera {
location <0,4,-20>
look_at <0,0,0>
angle 25
}
- declare granulas = pigment {
//granite
crackle
turbulence 0.5
color_map {
[0.0 color Orange]
[0.15 color YellowOrange]
[0.25 color YellowYellowOrange]
[1.0 color Yellow]
}
scale 0.05
// warp{turbulence 0.1}
};
- declare kromos=intersection
{
sphere {0,1.025}
sphere {0,1.00}
// pigment {color Red}
pigment { color rgbf 1 }
hollow
interior {
media {
emission 20
method 2
intervals 1
samples 5, 5
density {
spherical
color_map {
[ 0.0 rgb 0.0 ]
[ 0.2 rgb <0.25, 0.0, 0.0> ]
[ 0.4 rgb <0.5, 0.0, 0.0> ]
[ 1.0 rgb <1.0, 0.0, 0.0> ]
}
}
}
media {
absorption 5.0
method 1
intervals 1
samples 5, 5
density {
spherical
color_map {
[ 0.0 rgb 1.0 ]
[ 0.1 rgb 1.0 ]
[ 1.0 rgb 1.0 ]
}
}
}
}
};
- declare spots = pigment {
//granite
bozo
turbulence 0.5
color_map {
[0.0 color Black]
[0.55 color DarkYellow]
[1.0 color Yellow]
}
scale 0.15
};
- declare sun_surf =pigment
{
bozo
turbulence 0.5
scale 0.2
pigment_map {
[0.0 granulas]
[0.7 granulas scale 5]
// [0.7 Yellow]
[1.0 spots]
}
};
- declare korona=object
{
sphere {0,6}
pigment { color rgbf 1 }
hollow
interior {
media {
emission 10
method 3
intervals 1
samples 5, 5
density {
spherical
color_map {
[ 0.0 rgb 0.0 ]
[ 0.25 rgb <0.5, 0.5, 0.5> ]
[ 1.0 rgb <1.0, 1.0, 1.0> ]
}
}
}
}
};
- declare sun=union {
object {
sphere {0,1}
pigment {sun_surf}
//pigment {Yellow}
finish {ambient 5}
scale 3
}
object {
kromos
//translate <sax,0,say>
scale 3.25
}
//object {korona
//scale 1
//}
};
object {
sun
scale 1
}
Licensing
[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:12, 21 May 2019 | | 800 × 600 (287 KB) | Merikanto (talk | contribs) | User created page with UploadWizard |
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