Command-and-control IPv4 map, 2025-06-09 to 2025-06-22 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
38.128.0[.]0/9
43.136.0[.]0/13
124.220.0[.]0/14
1.94.0[.]0/15
47.92.0[.]0/14
39.104.0[.]0/14
111.229.0[.]0/16
101.42.0[.]0/15
106.52.0[.]0/14
47.100.0[.]0/14
Command-and-control IPv4 map, 2025-05-10 to 2025-05-23 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
38.128.0[.]0/9
124.220.0[.]0/14
43.136.0[.]0/13
1.94.0[.]0/15
196.251.116[.]0/23
176.65.140[.]0/23
47.92.0[.]0/14
39.104.0[.]0/14
196.251.84[.]0/22
176.65.142[.]0/24
The previous demo made me dig deeper into dithering algorithms. It's something I should have done years ago, as I've been using simple random dithering now and then, and I hadn't even thought of gamma correction. One algorithm in particular caught my eye: Riemersma dithering, which uses the Hilbert curve. Compared to the usual matrices for error diffusion, the curve approach seemed easier to implement in some ways, as it has fewer edge issues.
More interestingly, it struck a chord with my earlier experiments with space-filling curves in image processing. So it was a kind of familiar territory, but it also seemed esoteric enough that I could imagine making some new discoveries. For example, play with other plane-filling curves besides the Hilbert.
The first image uses the boustrophedon curve, which makes the vertical wave patterns I recall from a number of non-dithering demos. The second curve is what I call the diagstrophedon, a diagonal zig-zag starting from the top left corner, and I think its wavy artefacts make a nice match for Venus's hair.
Then in image 3 we have Hilbert, which doesn't seem to make any particular artefacts, and I guess that's a good thing for dithering. Finally 4 uses the Peano curve, which makes some fun wiggles in light areas.
#dithering #riemersmadithering #stippling #halftoneart #raster #pixelart #hilbertcurve #peanocurve #planefillingcurve #spacefillingcurve #pythoncode #opengl #algorithmicart #algorist #mathart #laskutaide #ittaide #kuavataide #iterati
How it was supposed to look like in the first place: rounded with Bezier curves.
I've used Bezier curves and Hermite splines quite a lot to smooth out progressions of discrete points, such as Hamiltonian circuits. The challenge with this Hilbert curve is that there are tens of thousands of points, so drawing a nice OpenGL shape for each edge gets rather slow. Of course, this isn't a deal breaker for still images, but I like making my code efficient.
I've now constructed the Bezier curves in geometry shaders. I've used those for some time to draw simpler shapes more efficiently, such as line segments with rounded ends; the idea is to do more work on the GPU, while moving as little data as possible there. These line segments only need the endpoint coordinates, as well as thickness and colour. The curves seemed more challenging due to the number of parameters, but in the end there weren't really any issues.
#beziercurve #hilbertcurve #planefillingcurve #spacefillingcurve #lineart #linedrawing #singlelinedrawing #pythoncode #opengl #geometryshader #algorithmicart #algorist #mathart #laskutaide #ittaide #kuavataide #iterati
The recent stipplings and partitionings reminded me of this demo from about 2 years ago. In short, it's a Hilbert curve where the iteration level varies by the colour value. I wanted to make some small changes, but I ended up rewriting it completely. The shader approach seemed needlessly heavy and redundant for something that works more naturally on a CPU. But mostly it was just a fun exercise in looking at the same problem from a different angle.
The first picture shows the original idea. With the new idea, I wanted to get rid of the slanted lines; the result doesn't feel any better to me, but I guess it's interesting in its own way.
#hilbertcurve #planefillingcurve #spacefillingcurve #lineart #linedrawing #singlelinedrawing #pythoncode #opengl #algorithmicart #algorist #mathart #laskutaide #ittaide #kuavataide #iterati
If anyone wants to make a Half-square Hilbert I made a toy to play with patterns. (fixed a bug from the first go)
I need fabric - so I plan to start maybe later this week.
https://codepen.io/fractalkitty/live/pvoBwxv/edc44d4417167d59d8b2c1d9ad574109
#codepen #p5js #quilting #hilbertCurve #fiberArt #quilts #mathart
Command-and-control IPv4 map, 2025-02-07 to 2025-02-20 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
104.21.0[.]0/17
172.67.0[.]0/16
217.30.160[.]0/20
95.216.0[.]0/15
13.60.0[.]0/15
121.40.0[.]0/15
69.67.151[.]0/24
147.185.221[.]0/24
3.80.0[.]0/12
13.208.0[.]0/13
Command-and-control IPv4 map, 2025-01-26 to 2025-02-08 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
3.64.0[.]0/12
38.128.0[.]0/9
124.220.0[.]0/14
195.177.95[.]0/24
216.24.212[.]0/24
147.185.221[.]0/24
3.128.0[.]0/11
13.60.0[.]0/15
92.119.36[.]0/24
94.156.166[.]0/23
Command-and-control IPv4 map, 2024-12-15 to 2024-12-28 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
124.220.0[.]0/14
101.42.0[.]0/15
1.94.0[.]0/15
47.96.0[.]0/13
47.92.0[.]0/14
121.40.0[.]0/15
101.200.0[.]0/15
111.229.0[.]0/16
43.136.0[.]0/13
113.45.128[.]0/17
Shadow pattern test, thinking about enclosures, this crude test inspired me with a bunch of ideas
slice through the different orders
I'm doing this Coding Train tutorial on a hilbert curve today, but trying to do it in houdini https://thecodingtrain.com/challenges/c3-hilbert-curve , pretty good progress so far, bitshifting makes me a little uneasy though. I also watched the 3blue1brown video on space filling curves, so good. https://www.youtube.com/watch?v=3s7h2MHQtxc
#houdini #hilbertcurve #creativecoding
Command-and-control IPv4 map, 2024-08-27 to 2024-09-09 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
124.220.0[.]0/14
47.96.0[.]0/13
101.42.0[.]0/15
154.216.16[.]0/22
106.14.0[.]0/15
39.104.0[.]0/14
111.229.0[.]0/16
43.136.0[.]0/13
223.144.0[.]0/12
47.120.0[.]0/15
Command-and-control IPv4 map, 2024-06-08 to 2024-06-21 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
124.220.0[.]0/14
194.67.193[.]0/24
156.242.32[.]0/19
106.52.0[.]0/14
101.42.0[.]0/15
77.91.76[.]0/23
94.156.64[.]0/21
111.230.0[.]0/16
101.34.0[.]0/15
3.120.0[.]0/13
Command-and-control IPv4 map, 2024-05-19 to 2024-06-01 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
38.207.120[.]0/21
124.220.0[.]0/14
106.52.0[.]0/14
101.42.0[.]0/15
91.92.240[.]0/20
3.120.0[.]0/13
5.42.96[.]0/24
111.230.0[.]0/16
3.64.0[.]0/12
94.156.64[.]0/21
Command-and-control IPv4 map, 2024-01-28 to 2024-02-10 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
62.72.185[.]0/24
204.76.203[.]0/24
193.233.132[.]0/24
5.181.80[.]0/24
93.123.39[.]0/24
103.86.130[.]0/23
45.15.156[.]0/24
185.172.128[.]0/24
185.216.70[.]0/24
Command-and-control IPv4 map, 2023-12-13 to 2023-12-26 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
156.234.211[.]224/27
163.5.64[.]0/24
109.123.227[.]0/24
185.172.128[.]0/24
213.109.202[.]128/25
193.233.132[.]0/24
147.78.47[.]0/24
194.33.191[.]0/24
195.20.16[.]0/24
Command-and-control IPv4 map, 2023-11-29 to 2023-12-12 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
143.92.58[.]96/29
85.209.176[.]0/24
163.5.64[.]0/24
154.204.24[.]192/26
147.50.253[.]32/27
194.33.191[.]0/24
95.214.26[.]0/24
193.233.132[.]0/24
185.65.105[.]0/24
Command-and-control IPv4 map, 2023-11-25 to 2023-12-08 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
85.209.176[.]0/24
143.92.60[.]64/28
163.5.64[.]0/24
154.204.24[.]192/26
194.49.94[.]0/24
120.233.114[.]0/23
95.214.26[.]0/24
194.33.191[.]0/24
185.65.105[.]0/24
Command-and-control IPv4 map, 2023-11-03 to 2023-11-16 #HilbertCurve
https://abjuri5t.github.io/SarlackLab/
194.49.94[.]0/24
194.169.175[.]0/24
185.216.70[.]0/24
91.103.252[.]0/24
147.50.253[.]64/26
94.142.138[.]0/24
45.15.156[.]0/24
95.181.173[.]0/24
194.147.140[.]0/24
