File:Spiral galaxy 6 r 1.png
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Summary
[edit]
| Description |
English: Spiral galaxy rendering with POV-Ray |
| Date | |
| Source | Own work |
| Author | Merikanto |
POV-Ray 3.7 source code
/////////////////////////////////////////
//
// spiral galaxy
//
// POV-Ray 3.7 source code
//
// 3.7.2023 0000.0003
//
- include "functions.inc"
camera {
location <0,0,-2>*1.5
look_at <0,0,0>
angle 35
}
- declare expf1=function {
max(1-min ( -1* exp( -sqrt(x*x+y*y+0*0)),0 ),1)
}
- declare hole1= function {
max( min( 1*f_sphere(x*5.5,y*5.5,0,2),1),0)
}
- declare powhole1=function {
pow( max(min(f_sphere(x*10,y*10,(0),1),1),0) ,6)
}
- declare f_normal1=function {
exp (-0.5*pow(((( sqrt(x*x+y*y) ))/0.5),2))
}
// logarithmic spiral 0
- declare logspiral0=function {
(1*log(sqrt(x*x+y*y))*pi*2)+10*(atan2(x,y)/(pi/2))
// ( sin ( (1*log(sqrt(x*x+y*y))*pi*2)+1*(atan2(x,y)/(pi/2)) *pi/2 ) )
}
// logarithmic spiral 1
- declare logspiral1=function {
((sin(logspiral0(x,y,z)*2*pi)/2)+0.5)
}
// logarithmic spiral 2
- declare logspiral2=function {
max( min( ( ((sin((4*log(sqrt( (x*x+y*y) ))*pi*2)+((atan2(x,y))/(pi*1))*2*pi)/2)+0.5) ) ,1),0)
}
// logarithmic spiral 1
- declare logspiral3=function {
// ((sin(logspiral0(x,y,z)*1*pi/2)/2)+0.5)
min ( max (
((( sin ( (2*log(sqrt( (x*x+y*y) ))*pi*2)+0.5*((atan2(x,y)/(1))/(pi/8)) *pi/2 ) ) +1)/2)
,0) ,1)
}
// logarithmic spiral 1
- declare logspiral4=function {
// ((sin(logspiral0(x,y,z)*1*pi/2)/2)+0.5)
min ( max (
((( sin ( (2*log(sqrt( (x*x+y*y) ))*pi*2)+0.5*((atan2(x,y))/(pi/16)) *pi/2 ) ) +1)/2)
,0) ,1)
}
// logarithmic spiral 1
- declare logspiral5=function {
// ((sin(logspiral0(x,y,z)*1*pi/2)/2)+0.5)
min ( max (
((( sin ( (2*log(sqrt( (x*x+y*y) ))*pi*2)+0.5*((atan2(x,y))/(pi/16)) *pi/2 ) ) +1)/2)
,0) ,1)
}
- declare spirals1= function
{
max ( min( (logspiral1(x,y,z) *f_normal1(x,y,z)) ,1) ,0)
}
#declare spirals2= function
{
max ( min( (logspiral1(x,y,z) *f_normal1(x,y,z)) ,1) ,0)
}
- declare spiralnormal1 = function {
(f_normal1(x*1.5,y*1.5,z*1.5)*logspiral2(x,y,z)/2 )
}
#declare spiralnormalhole1 = function {
(f_normal1(x*1.5,y*1.5,z*1.5)*logspiral2(x,y,z)/2 ) *hole1(x*3,y*3,z*3)
}
#declare spiralnormalhole2 = function {
(f_normal1(y*1.5,x*1.5,z*1.5)*logspiral2(x,y,z)/2 ) *hole1(x*3,y*3,z*3)
}
- declare galax_trunc1= function {
spiralnormalhole1(x,y,z)/3
+pow(f_normal1(x*1.5,y*1.5,z*1.5)/2,2)/3
+max ( f_normal1(x*5,y*5,z*5)/3, spiralnormalhole1(x,y,z)/3 )
}
#declare galax_trunc2= function {
spiralnormalhole2(x,y,z)/3
+pow(f_normal1(x*1.5,y*1.5,z*1.5)/2,2)/3
+max ( f_normal1(x*5,y*5,z*5)/3, spiralnormalhole1(x,y,z)/3 )
}
#declare galbi1=function {
( galax_trunc2(x,y,z)* f_granite ( galax_trunc2(x,y,z),1-f_granite(x*3,y*3,z*3),f_wrinkles(x*30,y*30,z*30))/2
+ galax_trunc1(x,y,z)* f_granite ( galax_trunc1(x,y,z),1-f_granite(x*3,y*3,z*3),f_wrinkles(x*30,y*30,z*30))/2 )
* (
(
f_wrinkles(x*30,y*30,z*30) *8
*f_wrinkles(x*100,y*100, z*100)*4
*f_wrinkles(x*300,y*300, z*300)*2
*f_wrinkles(x*1000,y*1000, z*1000)*1 )) /4
}
- declare norma1= function {
f_normal1(x,y,z)*0.01
+ f_normal1(x*3,y*3,z*3)*0.12
}
#declare spiku1= function {
// galax1(x,y,z)
(
// galax_trunc2(x,y,z)* f_granite ( galax_trunc2(x,y,z),1-f_granite(x*3,y*3,z*3),f_wrinkles(x*30,y*30,z*30))/2
(
galax_trunc1(x,y,z)* f_granite ( galax_trunc1(x,y,z),1-f_granite(x*3,y*3,z*3),f_wrinkles(x*30,y*30,z*30))/2 )
*(f_wrinkles(galax_trunc1(x,y,z),y*10,z*10)/2+f_wrinkles(x*100*galax_trunc1(x,y,z),y*100,z*100)/2)*1
*f_granite(x*10*galax_trunc1(x,y,z),y*10*f_granite(x,y,z), z*10*f_wrinkles(x*10,y*10,z*10))
*f_wrinkles(x*100,y*100, z*100)*4
*f_wrinkles(x*300,y*300, z*300)*2
)*pow(f_granite(x,y,z),1)
}
- declare galbitex1= texture {
pigment {
function { galbi1(x,y,z) }
// turbulence 0.01
poly_wave 1
color_map {
[0 rgbt <1,1,1,1>]
[1 rgbt <1/8,1/8,1,0>*1]
}
}
finish {ambient 1}
// normal { function { pigu1(x,y,z) }}
}
- declare spitex1= texture {
pigment {
function { spiku1(x,y,z)*f_wrinkles(x*30,y*30,x*30) }
//poly_wave 1.4
// turbulence 0.05
color_map {
[0 rgbt <1,1,1,1>]
[1 rgbt <10,1,1,0>*1]
}
}
finish {ambient 2}
}
- declare nortex1= texture {
pigment {
function { norma1(x,y,z) }
poly_wave 1
color_map {
[0 rgbt <1,1,1,1>]
[1 rgbt <1,0,0,0>*1]
}
}
finish {ambient 8}
}
- declare gal1=object {
plane {z,0}
texture {galbitex1 scale 1/2}
texture {galbitex1 scale 1/2 rotate z*60 }
texture {spitex1 scale 1/2 rotate z*90}
texture {nortex1 scale 1/2 rotate z*90}
}
union {
object {gal1
rotate <30,40,50>
}
}
Licensing
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- to share – to copy, distribute and transmit the work
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- 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.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:10, 3 July 2023 | | 1,600 × 1,200 (658 KB) | Merikanto (talk | contribs) | Uploaded own work with UploadWizard |
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