The #UselessGraphic of this night was an old picture found in an old #raytracing project.

--- #UselessGraphic report
273 1068 8217 genplotting.f90
38 121 975 genp_tests.f90
41 102 838 lissajous.f90
28 103 739 morecircles.f90
69 219 1947 oscilloscope.f90
40 158 1090 randomwalk.f90
61 211 1756 rndwlkng.f90
41 152 1117 spirale.f90
50 236 1349 squarmania.f90
54 201 1567 starfield.f90
17 43 311 testbed.f90
712 2614 19906 total

--- #UselessGraphic report
273 1068 8217 genplotting.f90
38 121 975 genp_tests.f90
41 102 838 lissajous.f90
28 103 739 morecircles.f90
69 219 1947 oscilloscope.f90
40 158 1090 randomwalk.f90
61 211 1756 rndwlkng.f90
41 152 1117 spirale.f90
50 236 1349 squarmania.f90
53 195 1497 starfield.f90
17 43 311 testbed.f90
711 2608 19836 total

I'm just trying to make another new #UselessGraphic, so I added X and Y factors to my Genplot #Fortran module. And now, I can plot non-circular circles, with as usual, #rasta colors.

#UselessGraphic report:
200 811 6164 genplotting.f90
41 102 838 lissajous.f90
28 103 739 morecircles.f90
69 219 1947 oscilloscope.f90
40 158 1090 randomwalk.f90
61 211 1756 rndwlkng.f90
38 141 1016 spirale.f90
50 236 1349 squarmania.f90
48 182 1389 starfield.f90
30 97 678 testbed.f90
605 2260 16966 total

#UselessGraphic report:
155 648 4934 genplotting.f90
41 102 838 lissajous.f90
69 219 1947 oscilloscope.f90
40 158 1090 randomwalk.f90
69 212 1796 rndwlkng.f90
38 141 1016 spirale.f90
50 236 1349 squarmania.f90
48 182 1389 starfield.f90
10 20 205 testbed.f90
520 1918 14564 total

#UselessGraphic report:
139 569 4325 genplotting.f90
41 102 838 lissajous.f90
69 219 1942 oscilloscope.f90
40 158 1090 randomwalk.f90
38 141 1016 spirale.f90
50 236 1349 squarmania.f90
48 182 1389 starfield.f90
10 20 200 testbed.f90
435 1627 12149 total

The today #UselessGraphic have only two colors, but is astoundingly regular. May the #Forth be with you.