File:Algol-type variable binary star animation 3.gif
Algol-type_variable_binary_star_animation_3.gif (640 × 480 pixels, file size: 1.98 MB, MIME type: image/gif, looped, 72 frames, 7.2 s)
Captions
Captions
Summary[edit]
| Description |
English: Algol-type binary. Yekllow star is cooler and fainter. Smaller blue-white star is brighter. Yellow, big star is fainter. Stars eclipse each other. |
| Date | |
| Source | Own work |
| Author | Merikanto |
Pov-Ray 3.8 source code of animation
Make animation from output images with imagemagick in win 11 (you must install ImageMagick and posible set path)
magick convert -delay 10 -loop 0 *.png algol_type_binary_animation_1.gif
Python 3 code
- generate light curve+img animation images from double star images
-
- python3 script
- 28.9.2023 0000.0000B
-
import math
import numpy as np
from scipy import interpolate
import matplotlib.pyplot as plt
import matplotlib.image as mpimg
inputbase1=".\\pngs\\"
outputbase1=".\\pngs3\\"
imagebase1="doublestar1"
animsize=72
animcoeff1=72/360
x0=2*np.array([00,30,60,95,125,160,180,220,250,280,300,330,360])
y0=300+100*(np.array([4,4,4,4,6,4,4,4,5,4,4,4,4])-4)
x2 = np.linspace(0,360,360)*2
- y2=np.interp(x2, x0, y0)
- y2= cubic_interpolate(x2,x0,y0)
tck = interpolate.splrep(x0, y0, s=0)
y2 = interpolate.splev(x2, tck, der=0)
- print(y2)
for n in range(1, 360,5):
angel1=n
nummero1=int(animcoeff1*angel1)+1
in_imagename1=inputbase1+imagebase1+str(nummero1).zfill(2)+".png"
out_imagename1=outputbase1+imagebase1+str(nummero1).zfill(2)+".png"
x3=angel1*2
y3=y2[int(angel1)]
print(n, angel1,y3)
img = mpimg.imread(in_imagename1)
imgplot = plt.imshow(img)
plt.scatter(x3,y3,color="red",s=400)
plt.yticks(ticks=np.array([0,200,400,600]),labels=["0","3","6","9"])
plt.xticks(ticks=np.array([0,90,180,270,360])*2,labels=["0","90","180","270","360"])
plt.plot(x2,y2, color="yellow", lw=5)
plt.savefig(out_imagename1)
#plt.show()
#plt.scatter(x3,y3,color="black",s=400)
Animation .ini file
- POV-Ray animation ini file
Antialias=Off
Antialias_Threshold=0.1
Antialias_Depth=2
Input_File_Name="doublestar1.pov"
Initial_Frame=1
Final_Frame=72
Initial_Clock=0
Final_Clock=360
Cyclic_Animation=on
Pause_when_Done=off
Drawing souble star oobjects, POV-Ray 3.8 source code
/////////////////////////////
//
// Algol type double star
//
//pov-ray 3.8 source code
//
// 27.9.2023 v 0000.0001
//
/////////////////////////////
- include "functions.inc"
- declare taunolla=clock+90;
- declare tau1=radians(taunolla);
- declare tau2=radians(taunolla+180.0);
- declare ra=1.2;
- declare rb=1.2;
- declare ax = sin(tau1)*ra+0.5;
- declare ay = cos(tau1)*ra;
- declare bx = sin(tau2)*rb-0.5;
- declare by = cos(tau2)*rb;
- declare Orange=<1,0.5,0>;
- declare Yellow=<1,1,0>;
- declare White=<1,1,1>;
- declare Blue=<0.8,0.8,1>;
- declare Black=<0.0,0.0,0.0>;
- declare Grey=<0.5,0.5,0.5>;
- declare atm_thickness1=0.1 ;
camera { location <0,10,-80> look_at 0 angle 4.5 }
- macro convection_cells(c)
crackle
pigment_map{
[0.0 rgb c*0.2]
[0.2 rgb c]
[0.9 rgb c]
[1.0 rgb 1.0]
}
warp{turbulence 0.3}
- end
// yellowish star
#declare stara1= union {
sphere
{
0, 1
// translate <ax,0,ay>
texture{
pigment{
// ripples
granite scale 1/10
// wrinkles
scale 1 turbulence 0.3
color_map {
[0.0 color <1,0.5,0> ]
// [0.1 color Grey ]
// [0.2 color Yellow ]
[1.0 color <1,1,0> ]
} // cmap
} // pig
finish {
ambient 1
diffuse 0.01
reflection 0.01
} // fin
} // tex
} // sphere
// halo 1
sphere
{
0, 1 hollow no_shadow
pigment {
rgbt 1 }
interior
{ media
{ emission 1/1
density
{
function {
// 1*exp(-1*(sqrt(x*x+(y)*(y)+z*z)- 1 - 0.00001)/atm_thickness1)
// exp(-sqrt((x*x+y*y+z*z)-0) )*0.3
pow( 2*sqrt(x*x+y*y+z*z),-6 )
}
density_map
{
[0 rgb 0.0001*<1,1,0>]
[0.01 rgb 0.003*<1,1,0>]
[.5 rgb <1,1>*1/2]
[1 rgb <1,1,0>*1.5]
}
}
samples 30,30 intervals 1 confidence .1 // quite fast settings
method 3
}
}
scale 1.75
}
}
// bluish star
- declare stara2=union {
sphere
{
0, 1
texture {
pigment {
crackle
pigment_map{
[0.0 rgb <1/100,1/100,1>*2]
[1.0 rgb <8/10,8/10,1>*2]
}
warp{turbulence 0.75}
}
scale 0.1
}
finish {
ambient 10
diffuse 0.01
reflection 0.01
} // fin
scale 1/2
} // sphere
sphere
{
0, 1 hollow no_shadow
pigment {
rgbt 1 }
interior
{ media
{ emission 1.5
density
{
function {
// exp(-1.5*(sqrt(x*x+y*y+z*z)-0) )
pow( 2*sqrt(x*x+y*y+z*z),-4 )
}
density_map
{
[0 rgb 0.01*<0.5,0.5,1>]
[0.125 rgb 0.1*<0.5,0.5,1>]
[.5 rgb <0.5,0.5,1>*1/2]
[1 rgb <0.5,0.5,1>*1.5]
}
}
samples 30,30 intervals 2 confidence .001 // quite fast settings
method 3
}
}
scale 1/2
scale 2
}
}
// stars
object {stara1
translate <ax,0,ay>
}
object {stara2
translate <bx,0,by>
}
OLD codestuff:
This animation is made with povray,linux bash, python and ctioga2.
Note: you must modify these scripts to run animation correctly.
Povray n6.pov
declare taunolla=clock+80;
- declare tau=radians(taunolla);
- declare tau2=radians(taunolla+180.0);
- declare ra=1.5;
- declare rb=1.5;
- declare ax = sin(tau)*ra+0.5;
- declare ay = cos(tau)*ra;
- declare bx = sin(tau2)*rb-0.5;
- declare by = cos(tau2)*rb;
- declare Orange=<1,0.5,0>;
- declare Yellow=<1,1,0>;
- declare White=<1,1,1>;
- declare Blue=<0.8,0.8,1>;
- declare Black=<0.0,0.0,0.0>;
- declare Grey=<0.5,0.5,0.5>;
- macro convection_cells(c)
crackle
pigment_map{
[0.0 rgb c*0.2]
[0.2 rgb c]
[0.9 rgb c]
[1.0 rgb 1.0]
}
warp{turbulence 0.3}
- end
camera { location <0,0,-70> look_at 0 angle 5 }
sphere
{
0, 1
translate <ax,0,ay>
/*
texture {
pigment {
crackle
pigment_map{
[0.0 rgb Orange]
[0.2 rgb Yellow]
[0.9 rgb Yellow]
[1.0 rgb 1.0]
}
warp{turbulence 0.3}
}
scale 0.05
}
finish {
ambient 0.7
diffuse 0.01
reflection 0.01
} // fin
*/
texture{
pigment{
ripples scale 0.1 turbulence 1.5
color_map {
[0.0 color Black ]
[0.1 color Grey ]
[0.2 color Yellow ]
[1.0 color Yellow ]
} // cmap
} // pig
finish {
ambient 0.7
diffuse 0.01
reflection 0.01
} // fin
} // tex
} // sphere
// halo 1
sphere
{
0, 1.3 hollow no_shadow
/*
normal {
wrinkles 0.3
}
*/
pigment {
rgbt 1 }
interior
{ media
{ emission 1/1
density
{ spherical density_map
{ [0 rgb 0]
[0.125 rgb Yellow*0.003]
[0.25 rgb Yellow*0.02]
[.75 rgb Yellow*.3]
[1 rgb 2]
}
}
samples 1,1 intervals 1 confidence .1 // quite fast settings
method 3
}
}
scale 2
translate <ax,0,ay>
}
sphere
{
0, 0.5
translate <bx,0,by>
texture {
pigment {
crackle
pigment_map{
[0.0 rgb Blue]
[0.2 rgb White]
[0.9 rgb White]
[1.0 rgb 1.0]
}
warp{turbulence 0.3}
}
scale 0.05
}
finish {
ambient 0.7
diffuse 0.01
reflection 0.01
} // fin
/*
texture{
pigment{
ripples scale 0.1 turbulence 1.5
color_map {
[0.0 color White ]
[0.4 color White ]
[0.5 color Blue ]
[1.0 color Blue ]
} // cmap
} // pig
finish {
ambient 1.0
diffuse 0.01
reflection 0.01
} // fin
} // tex
- /
} // sphere
sphere
{
0, 0.5 hollow no_shadow
pigment {
rgbt 1 }
interior
{ media
{ emission 1/1
density
{ spherical density_map
{ [0 rgb 0][.5 rgb Blue*.5][1 rgb 1.5]
}
}
samples 1,1 intervals 1 confidence .1 // quite fast settings
method 3
}
}
scale 1.35
translate <bx,0,by>
}
Povray ini
- POV-Ray animation ini file
Antialias=Off
Antialias_Threshold=0.1
Antialias_Depth=2
Input_File_Name="n6.pov"
Initial_Frame=1
Final_Frame=72
Initial_Clock=0
Final_Clock=360
Cyclic_Animation=on
Pause_when_Done=off
Run bash
- sudo apt install plotutils ctioga2 imagemagick
- do manually coarse light curve
- #spline -n 72 kirka1.txt > kirka2.txt
rm *.png
povray n6.ini
cp *.png ./anim_sources
convert -delay 20 -loop 0 *.png algol_type_binary_animation_1.gif
- note correct mogrify error
- /etc/ImageMagick-6/policy.xml
- modify coder line to this <policy domain="coder" rights="none" pattern="PDF" />
- add this line
- <policy domain="coder" rights="read|write" pattern="LABEL" />
- mogrify -verbose -density 500 -resize 800 -format png ./*.pdf
python taco2.py
cd animator
bash makepdf.bash
cd ..
Python ctioga files generator "taco2.py"
- python .txt light curve, png files
- ctioga2 file(s) ganerator
import csv
phases = []
mags = []
def write_taco_faili(kuvapolku, tiogapolku, phase, mag):
myfile = open(tiogapolku, 'w')
#myfile.write("draw-image "+kuvanimi+" 0.1,1 6,-1 /transparency=0.4\n")
#/myfile.write("draw-marker "+str(x)+","+str(y)+" Circle /color blue\n")
myfile.write("page-size 10cmx7.5cm\n")
#myfile.write(str(13))
myfile.write("xy-plot\n")
myfile.write("yrange 8:0\n")
myfile.write("axis-style right /tick-label-scale=1.1 \n")
myfile.write("ylabel magnitude\n")
myfile.write("xlabel phase\n")
myfile.write("color-set blue\n")
myfile.write("axis-style right /tick-label-scale=1.1 \n")
myfile.write("fill none\n")
myfile.write("color-set red\n")
myfile.write("plot ../kirka3.txt@1:2 /line-width=3\n")
myfile.write("draw-image "+kuvapolku+" 0.1,-1 369,8 /transparency=0.0\n")
myfile.write("\n")
myfile.write("xy-plot\n")
myfile.write("yrange 8:0\n")
myfile.write("fill none\n")
myfile.write("color-set yellow\n")
myfile.write("plot ../kirka3.txt@1:2 /line-width=3\n")
myfile.write("draw-marker "+str(phase)+","+str(mag)+" Circle /color white\n")
myfile.close()
return
def read_light_curve(kayranimi):
naku=0
with open(kayranimi) as csvfile:
readCSV = csv.reader(csvfile, delimiter=' ')
for row in readCSV:
phase = row[0]
mag = row[1]
if (naku>-1):
phases.append(phase)
mags.append(mag)
naku=naku+1
#print(phases)
#print(mags)
return
def generate_taco_bases(kuvahake, animhake, kuvakanta, kuvaliite):
global phases
global mags
myfile = open(animhake+"makepdf.bash", 'w')
maara=len(phases)
print (maara)
maara=maara-1;
for n in range(1, maara):
#print (n)
nimmi=kuvakanta+str(("%02d"%n))+kuvaliite
#print (nimmi)
polkunimmi=kuvahake+nimmi;
#print (polkunimmi)
aninimmi=animhake+"g"+str(("%04d"%n))+".ct"
#print (aninimmi)
phase=phases[n]
mag=mags[n]
#print(phase, mag)
write_taco_faili(polkunimmi, aninimmi, phase, mag)
print (".")
myfile.write("ctioga2 -f g"+str(("%04d"%n))+".ct"+"\n")
myfile.write("mogrify -verbose -density 500 -resize 800 -format png ./*.pdf\n")
myfile.write("convert -delay 10 -loop 0 *.png algol_type_binary_animation_1.gif\n")
myfile.close()
return
- entry point
read_light_curve("kirka3.txt")
generate_taco_bases("../anim_sources/","./animator/", "n6",".png")
Brightness orig src file
00 4
30 4
60 4
95 4
125 6
160 4
180 4
220 4
250 5
280 4
300 4
330 4
360 4
Brightness file, that is used in anim, kirka2,txt
phase magnitude
0 4
5 3.98062
10 3.96899
15 3.96511
20 3.96899
25 3.98062
30 4
35 4.02585
40 4.05169
45 4.06978
50 4.07237
55 4.05169
60 4
65 3.91503
70 3.81644
75 3.72941
80 3.67909
85 3.69064
90 3.78922
95 4
100 4.3341
105 4.74656
110 5.17837
115 5.57055
120 5.86409
125 6
130 5.93799
135 5.71263
140 5.37718
145 4.98492
150 4.58912
155 4.24306
160 4
165 3.89567
170 3.89558
175 3.9477
180 4
185 4.0118
190 3.9879
195 3.94447
200 3.89767
205 3.86366
210 3.8586
215 3.89866
220 4
225 4.17045
230 4.3845
235 4.60832
240 4.80807
245 4.94991
250 5
255 4.93617
260 4.78295
265 4.57653
270 4.3531
275 4.14886
280 4
285 3.93205
290 3.92791
295 3.95982
300 4
305 4.02598
310 4.03637
315 4.03507
320 4.02598
325 4.01299
330 4
335 3.99026
340 3.98441
345 3.98246
350 3.98441
355 3.99026
360 4
Licensing[edit]
- 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
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:58, 28 September 2023 | | 640 × 480 (1.98 MB) | Merikanto (talk | contribs) | Update |
| 12:17, 18 May 2019 |  | 800 × 600 (4.63 MB) | Merikanto (talk | contribs) | User created page with UploadWizard |
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