File:Logarithmic spiral povray 3 r1.png
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Captions
Captions
Logarithmic spiral function with POV-Ray 3
Summary
[edit]
| Description |
English: Logarithmic spiral function with POV-Ray |
| Date | |
| Source | Own work |
| Author | Merikanto |
POV-Ray 3.7 source code
//
// logarithmic spiral function
//
// POV-Ray 3.7 source code
//
// 23.6.2023 0000.0001
//
- include "functions.inc"
global_settings {
assumed_gamma 1
}
light_source {<1, 1,-5/10>*1000*1000*1000 color <1,1,2>*3}
light_source {<-1, -1,-1/10>*1000*1000*1000 color <2,1,1>*3}
camera {
location <0, 0, -10>
right 1
up 1
angle 25
look_at 0
}
background {color rgb <1/2,1/2,1> }
// logarithmic spiral 0
- declare logspiral0=function {
(1*log(sqrt(x*x+y*y))*pi*2)+10*(atan2(x,y)/(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((3*log(sqrt( (x*x+y*y) ))*pi*2)+((atan2(x,y))/(pi*2))*2*pi)/2)+0.5) ) ,1),0)
}
- declare surf1=function {
pigment {
function {
(logspiral2(x,y,z))
}
color_map {
[0.00 color rgb <0,0,1>]
[0.5 color rgb <1/2,1/2,1/2>]
[1.00 color rgb <1,1,1>]
}
}
}
- declare surfpig1= pigment {
function {
surf1(x,y,z).gray
}
color_map {
[0.00 color rgbt <1,1/5,0,0>]
[1.00 color rgbt <1,1,0.0,0>]
}
}
- declare surftex1=texture {
pigment {
surfpig1
}
// normal {function { surf1(x,y,z).gray }}
finish {
phong 1
}
}
- declare object1=object {
plane {z,0}
//sphere {0,1 }
texture {surftex1}
}
object {object1}
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 | 11:56, 23 June 2023 | | 1,600 × 1,600 (347 KB) | Merikanto (talk | contribs) | Uploaded own work with UploadWizard |
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