# [sketch-a-day](https://abav.lugaralgum.com/sketch-a-day)
## coding a visual idea a day
Welcome! My name is [Alexandre Villares](https://abav.lugaralgum.com) and since January, 2018 I have been coding *sketches* everyday, publishing the source code in the same repository that stores this page, [github.com/villares/sketch-a-day](https://github.com/villares/sketch-a-day).
The results here are mostly tentative, exploratory, and I don’t feel like they need to be relevant or meaningful on any particular day. The everyday practice leads to the emergence of ideas that I consider interesting, worthy of further exploration. Some of those have been added to [selected work](https://abav.lugaralgum.com/selected-work/index-EN.html), this collection itself became valuable for me, and it is my pleasure to share it with anyone willing to explore coding as a creative and expressive medium.
To support my artistic work, research and open educational resources I freely publish on-line, donate using [Wise](https://wise.com/pay/me/alexandrev562), [Liberapay](https://liberapay.com/villares), [PayPal](https://www.paypal.com/donate/?hosted_button_id=5B4MZ78C9J724), or to the Brazilan PIX key `46c37783-5edb-4f1c-b3a8-1309db11488c`.
You can follow me on Mastodon [@villares@ciberlandia.pt](https://ciberlandia.pt/@villares) or at @villares@pynews.com.br, where I post most of my daily sketches. Please do not hesitate to [contact me](http://contato.lugaralgum.com) regarding licenses to use my work, teaching opportunities, consulting or other projects.
---
2026 \| [2025](2025.md) \| [2024](2024.md) \| [2023](2023.md) \| [2022](2022.md) \| [2021](2021.md) \| [2020](2020.md) \| [2019](2019.md) \| [2018](2018.md)
---
### sketch_2026_07_30
[sketch_2026_07_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_30) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_29
[sketch_2026_07_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_29) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_28
[sketch_2026_07_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_28) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_27
[sketch_2026_07_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_27) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_26
[sketch_2026_07_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_25
[sketch_2026_07_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_25) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_24
[sketch_2026_07_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_24) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_23
[sketch_2026_07_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_23) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_22
[sketch_2026_07_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_22) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_21
[sketch_2026_07_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_21) [[py5](https://py5coding.org/)]
#shapely v = poly.exterior.interpolate(t, normalized=True)
---
### sketch_2026_07_20
[sketch_2026_07_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_20) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_19
[sketch_2026_07_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_19) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_18
[sketch_2026_07_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_18) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_17
[sketch_2026_07_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_17) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_16
[sketch_2026_07_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_16) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_15
[sketch_2026_07_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_15) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_14
[sketch_2026_07_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_14) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_13
[sketch_2026_07_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_12
[sketch_2026_07_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_12) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_11
[sketch_2026_07_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_11) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_10
[sketch_2026_07_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_10) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_09
[sketch_2026_07_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_09) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_08
[sketch_2026_07_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_08) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_07
[sketch_2026_07_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_07) [[py5](https://py5coding.org/)]
90 estrelas
---
### sketch_2026_07_06
[sketch_2026_07_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_06) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_05
[sketch_2026_07_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_05) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_04
[sketch_2026_07_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_04) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_03
[sketch_2026_07_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_03) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_02
[sketch_2026_07_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_02) [[py5](https://py5coding.org/)]
---
### sketch_2026_07_01
[sketch_2026_07_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_07_01) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_30
[sketch_2026_06_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_30) [[py5](https://py5coding.org/)]
Continued from sketch_2026_06_07
---
### sketch_2026_06_29
[sketch_2026_06_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_29) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_28
[sketch_2026_06_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_28) [[py5](https://py5coding.org/)]
A blast from the past... revisiting a 2018 sketch-a-day sketch "s310".
---
### sketch_2026_06_27
[sketch_2026_06_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_27) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_26
[sketch_2026_06_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_25
[sketch_2026_06_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_25) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_24
[sketch_2026_06_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_24) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_22
[sketch_2026_06_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_22) [[py5](https://py5coding.org/)]
WIP
---
### sketch_2026_06_21
[sketch_2026_06_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_21) [[py5](https://py5coding.org/)]
WIP, it was easy and fun to add sound using the Processing Sound library... let's see if I can post a capture with sound...
---
### sketch_2026_06_20
[sketch_2026_06_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_20) [[py5](https://py5coding.org/)]
WIP memory game, maybe
---
### sketch_2026_06_19
[sketch_2026_06_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_19) [[py5](https://py5coding.org/)]
WIP of a memory game, maybe
---
### sketch_2026_06_18
[sketch_2026_06_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_18) [[py5](https://py5coding.org/)]
WIP of a memory game, maybe
---
### sketch_2026_06_17
[sketch_2026_06_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_17) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_16
[sketch_2026_06_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_16) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_15
[sketch_2026_06_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_15) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_14
[sketch_2026_06_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_14) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_13
[sketch_2026_06_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_12
[sketch_2026_06_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_12) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_11
[sketch_2026_06_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_11) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_10
[sketch_2026_06_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_10) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_09
[sketch_2026_06_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_09) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_08
[sketch_2026_06_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_08) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_07
[sketch_2026_06_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_07) [[py5](https://py5coding.org/)]
---
### sketch_2026_06_06
[sketch_2026_06_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_06) [[py5](https://py5coding.org/)]
Now I think I got it exactly! (https://freeradical.zone/@bitartbot/116696573113492478)
---
### sketch_2026_06_05
[sketch_2026_06_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_05) [[py5](https://py5coding.org/)]
inspired by https://freeradical.zone/@bitartbot/116696573113492478
f(x,y) = ((((y % 9) * (~y)) & (-(x & x))) ^ (~((-y) ^ (-y)))) % 6
---
### sketch_2026_06_04
[sketch_2026_06_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_04) [[py5](https://py5coding.org/)]
#LSystem
---
### sketch_2026_06_03
[sketch_2026_06_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_03) [[py5](https://py5coding.org/)]
#LSytem
---
### sketch_2026_06_02
[sketch_2026_06_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_02) [[py5](https://py5coding.org/)]
#SãoPaulo map made with #geopandas + #folium + social vulnerabilirty index data from GeoSampa. A heavy but interactive version at https://abav.lugaralgum.com/sketch-a-day/2026/sketch_2026_06_02/mapa.html
---
### sketch_2026_06_01
[sketch_2026_06_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_06_01) [[py5](https://py5coding.org/)]
More slider experiments...
---
### sketch_2026_05_31
[sketch_2026_05_31](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_31) [[py5](https://py5coding.org/)]
I think I'm going to revisit my silly Slider class... I can use ControlP5 with py5 but for some reason I always want to fiddle with this myself. At some point I had a Frankenstein Sliders+Arduino+Pots hybrid...
---
### sketch_2026_05_30
[sketch_2026_05_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_30) [[py5](https://py5coding.org/)]
#Arduino + #telemetrix + #rotaryEncoder testing...
---
### sketch_2026_05_29
[sketch_2026_05_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_29) [[py5](https://py5coding.org/)]
#Arduino + #telemetrix + #rotaryEncoder testing...
---
### sketch_2026_05_28
[sketch_2026_05_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_28) [[py5](https://py5coding.org/)]
Experimenting with #telemetrix, a Python tool for serial comms with an #Arduino board (replacing #pyfirmata). Trying out rotary encoders...
---
### sketch_2026_05_27
[sketch_2026_05_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_27) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_26
[sketch_2026_05_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_25
[sketch_2026_05_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_25) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_24
[sketch_2026_05_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_24) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_23
[sketch_2026_05_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_23) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_22
[sketch_2026_05_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_22) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_21
[sketch_2026_05_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_21) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_20
[sketch_2026_05_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_20) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_19
[sketch_2026_05_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_19) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_18
[sketch_2026_05_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_18) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_17
[sketch_2026_05_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_17) [[py5](https://py5coding.org/)]
Reviving a sketch/idea from 2018 :)
---
### sketch_2026_05_16
[sketch_2026_05_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_16) [[py5](https://py5coding.org/)]
Everything looks a bit fishy and broken on these latest sketches, because changing the rendering sizes is changing the number of combos found, which it shouldn't :(
---
### sketch_2026_05_15
[sketch_2026_05_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_15) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_14
[sketch_2026_05_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_14) [[py5](https://py5coding.org/)]
WIP
---
### sketch_2026_05_13
[sketch_2026_05_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_12
[sketch_2026_05_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_12) [[py5](https://py5coding.org/)]
57 closed loops made from 4 segments on a 3x3 grid of points.
---
### sketch_2026_05_11
[sketch_2026_05_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_11) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_10
[sketch_2026_05_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_10) [[py5](https://py5coding.org/)]
261 combinations of 3 connected segments, on a 3x3 grid of points. Removing rotations and translations.
---
### sketch_2026_05_09
[sketch_2026_05_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_09) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_08
[sketch_2026_05_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_08) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_07
[sketch_2026_05_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_07) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_06
[sketch_2026_05_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_06) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_05
[sketch_2026_05_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_05) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_04
[sketch_2026_05_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_04) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_03
[sketch_2026_05_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_03) [[py5](https://py5coding.org/)]
Reviving a sketch from 2018...
---
### sketch_2026_05_02
[sketch_2026_05_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_02) [[py5](https://py5coding.org/)]
---
### sketch_2026_05_01
[sketch_2026_05_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_05_01) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_30
[sketch_2026_04_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_30) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_29
[sketch_2026_04_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_29) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_28
[sketch_2026_04_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_28) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_27
[sketch_2026_04_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_27) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_26
[sketch_2026_04_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_25
[sketch_2026_04_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_25) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_24
[sketch_2026_04_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_24) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_23
[sketch_2026_04_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_23) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_22
[sketch_2026_04_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_22) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_21
[sketch_2026_04_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_21) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_20
[sketch_2026_04_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_20) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_19
[sketch_2026_04_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_19) [[py5](https://py5coding.org/)]
#pymunk studies... spring WIP
---
### sketch_2026_04_18
[sketch_2026_04_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_18) [[py5](https://py5coding.org/)]
Another attempt at improving an old "Particle Life" sketch...
---
### sketch_2026_04_17
[sketch_2026_04_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_17) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_16
[sketch_2026_04_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_16) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_15
[sketch_2026_04_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_15) [[py5](https://py5coding.org/)]
WIP #QuadraticCurve
---
### sketch_2026_04_14
[sketch_2026_04_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_14) [[py5](https://py5coding.org/)]
Sketch feito na última aula do curso para o MAM-SP... uma turma muito legal, foi um prazer.
---
### sketch_2026_04_13
[sketch_2026_04_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_12
[sketch_2026_04_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_12) [[py5](https://py5coding.org/)]
Adding some old code for handling #shapely MultiPolygons and Polygons with holes to my #pymunk wrapper :)
---
### sketch_2026_04_11
[sketch_2026_04_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_11) [[py5](https://py5coding.org/)]
Zero-gravity study of #pymunk PinJoint and PivotJoint,
---
### sketch_2026_04_10
[sketch_2026_04_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_10) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_09
[sketch_2026_04_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_09) [[py5](https://py5coding.org/)]
L-System from today's activity at Sesc.
---
### sketch_2026_04_08
[sketch_2026_04_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_08) [[py5](https://py5coding.org/)]
More #pymunk experiments, I think I have a basic "experimental helpers" module with a few wrapper classes.
---
### sketch_2026_04_06
[sketch_2026_04_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_06) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_05
[sketch_2026_04_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_05) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_04
[sketch_2026_04_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_04) [[py5](https://py5coding.org/)]
WIP I'm pursuing an idea I discussed with Ramalho once about making some thin class wrappers around #pymunk objects to simplify creation (and py5 drawing) of the simulations.
---
### sketch_2026_04_03
[sketch_2026_04_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_03) [[py5](https://py5coding.org/)]
---
### sketch_2026_04_02
[sketch_2026_04_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_02) [[py5](https://py5coding.org/)]
A small #pymunk demo I've built today at Sesc...
---
### sketch_2026_04_01
[sketch_2026_04_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_04_01) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_31
[sketch_2026_03_31](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_31) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_30
[sketch_2026_03_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_30) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_29
[sketch_2026_03_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_29) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_28
[sketch_2026_03_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_28) [[py5](https://py5coding.org/)]
Obrigado aos amigos do LHC (Laboratório Hacker de Campinas) pelo dia sensacional!
---
### sketch_2026_03_27
[sketch_2026_03_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_27) [[py5](https://py5coding.org/)]
Today my father would have been 91 years old.
---
### sketch_2026_03_26
[sketch_2026_03_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_25
[sketch_2026_03_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_25) [[py5](https://py5coding.org/)]
WIP... #Typography
---
### sketch_2026_03_24
[sketch_2026_03_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_24) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_23
[sketch_2026_03_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_23) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_22
[sketch_2026_03_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_22) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_21
[sketch_2026_03_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_21) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_20
[sketch_2026_03_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_20) [[py5](https://py5coding.org/)]
#scipy minimal spanning tree
---
### sketch_2026_03_19
[sketch_2026_03_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_19) [[py5](https://py5coding.org/)]
Dürer meets py5 https://en.wikipedia.org/wiki/Melencolia_I (thank you for the vertex data @introscopia!)
---
### sketch_2026_03_18
[sketch_2026_03_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_18) [[py5](https://py5coding.org/)]
322 combinations of 3 segments from 3x3 grid of points, avoiding rotations.
---
### sketch_2026_03_17
[sketch_2026_03_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_17) [[py5](https://py5coding.org/)]
1300 combinations of 3 connected line segments from a 3x3 grid of points.
---
### sketch_2026_03_16
[sketch_2026_03_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_16) [[py5](https://py5coding.org/)]
228 pairs of segments from a 3x3 grid that share a point *and* don't align or overlap.
---
### sketch_2026_03_15
[sketch_2026_03_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_15) [[py5](https://py5coding.org/)]
378 two-segment combinations from a 3x3 grid. Ordered and colored by segment length.
---
### sketch_2026_03_14
[sketch_2026_03_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_14) [[py5](https://py5coding.org/)]
1260 combinations of 3 line segments on a 3x3 grid of points. The segments must not have endings in common.
---
### sketch_2026_03_13
[sketch_2026_03_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_13) [[py5](https://py5coding.org/)]
Same 945 combinations of 4 lines from a 3x3 grid of points. Lines are now colored according to their angle.
---
### sketch_2026_03_12
[sketch_2026_03_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_12) [[py5](https://py5coding.org/)]
945 combinations of 4 lines on a 3x3 grid: the lines have no shared vertices
---
### sketch_2026_03_11
[sketch_2026_03_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_11) [[py5](https://py5coding.org/)]
100 of the 1890 combinations of 4 connected lines on a 3x3 grid... WIP.
---
### sketch_2026_03_10
[sketch_2026_03_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_10) [[py5](https://py5coding.org/)]
Inspired by https://internet-janitor.itch.io/wigglypaint
---
### sketch_2026_03_09
[sketch_2026_03_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_09) [[py5](https://py5coding.org/)]
Inpired by Wiggly Paint (https://internet-janitor.itch.io/wigglypaint)
- See also https://beyondloom.com/blog/onwigglypaint.html
---
### sketch_2026_03_08
[sketch_2026_03_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_08) [[py5](https://py5coding.org/)]
516 triangles on a 4x4 grid of points, avoiding duplicates with whole grid rotation, but not duplicates whit translations (& possible rotations) of the triangles inside the grid.
---
### sketch_2026_03_07
[sketch_2026_03_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_07) [[py5](https://py5coding.org/)]
---
### sketch_2026_03_06
[sketch_2026_03_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_06) [[py5](https://py5coding.org/)]
Based on the code written yesterday at the "drawing with code open atelier" at Sesc. Using images from Wikimedia Commons! :)
---
### sketch_2026_03_05
[sketch_2026_03_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_05) [[py5](https://py5coding.org/)]
Another #CellularAutomata experiment
---
### sketch_2026_03_04
[sketch_2026_03_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_04) [[py5](https://py5coding.org/)]
#CellularAutomata with a 16 cell neighborhood: (-1, -1), ( 0, -1), (1, -1), (-1, 0), ( 1, 0), (-1, 1), (0, 1), ( 1, 1), (-2, -2), ( 0, -4), (2, -2), (-4, 0), ( 4, 0), (-2, 2), (0, 4), ( 2, 2)
---
### sketch_2026_03_03
[sketch_2026_03_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_03) [[py5](https://py5coding.org/)]
Changing Conway's neighborhood rules is a quick way to explore closely related #CellularAutomata ... also circles!
---
### sketch_2026_03_02
[sketch_2026_03_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_02) [[py5](https://py5coding.org/)]
Calculation of #Conway's #GameOfLife was already very fast with #Numpy, but drawing was slow (squares and text...) now this is *so* fast... with vectorized `py5.points()` getting arrays of points to draw as squares with `py5.stroke_cap(py5.PROJECT)`. Check it out!
---
### sketch_2026_03_01
[sketch_2026_03_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_03_01) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_28
[sketch_2026_02_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_28) [[py5](https://py5coding.org/)]
Preparing a bit for teaching my #CellularAutomata class a few times this semester.#WIP #ConwaysGameOfLife with #numpy
---
### sketch_2026_02_27
[sketch_2026_02_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_27) [[py5](https://py5coding.org/)]
Back to some #numpy + #OpenSimplexNoise studies...
---
### sketch_2026_02_26
[sketch_2026_02_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_26) [[py5](https://py5coding.org/)]
979 ways of dividing a square with a 3x3 grid of points (980 if you count not dividing the square at all as one!)
---
### sketch_2026_02_25
[sketch_2026_02_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_25) [[py5](https://py5coding.org/)]
979 ways of dividing a 3x3 grid of points into polygons. Did I miss any? I hope not. The polys are colored according to the number of vertices.
---
### sketch_2026_02_24
[sketch_2026_02_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_24) [[py5](https://py5coding.org/)]
WIP / debug view: #shapely union is generating some bad polygons maybe subdivided edges or badly behaving vertices?) I have to figure out how to fix them.
---
### sketch_2026_02_23
[sketch_2026_02_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_23) [[py5](https://py5coding.org/)]
197 ways of dividing a grid of 3x3 points into triangles. Removing rotations.
I have done this before, but it has been fun doing it again from scratch I like the strategy this time much better.
---
### sketch_2026_02_22
[sketch_2026_02_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_22) [[py5](https://py5coding.org/)]
270 pairs of non-overlapping triangles from a 3x3 grid of points. Removing rotations.
---
### sketch_2026_02_21
[sketch_2026_02_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_21) [[py5](https://py5coding.org/)]
WIP: A first attempt at rendering a dictionary that shows on each row, at the start on the left, one of the 76 triangles that can be drawn on a 3x3 grid, then all the other triangles that do not overlapp with it.
Tweaked the next day...
---
### sketch_2026_02_20
[sketch_2026_02_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_20) [[py5](https://py5coding.org/)]
The 23 ways of dividing a 3x3 grid into 2, 3 and 4 triangles, excluding rotations.
---
### sketch_2026_02_19
[sketch_2026_02_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_19) [[py5](https://py5coding.org/)]
244 ways of dividing a 3 x 3 grid of points into 6 triangles.
---
### sketch_2026_02_18
[sketch_2026_02_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_18) [[py5](https://py5coding.org/)]
471 of 1703 triangulations of the 3 x 3 grid
---
### sketch_2026_02_17
[sketch_2026_02_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_17) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_16
[sketch_2026_02_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_16) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_15
[sketch_2026_02_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_15) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_14
[sketch_2026_02_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_14) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_13
[sketch_2026_02_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_12
[sketch_2026_02_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_12) [[py5](https://py5coding.org/)]
This sketch was made during an activity at Sesc today :)
---
### sketch_2026_02_11
[sketch_2026_02_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_11) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_10
[sketch_2026_02_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_10) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_09
[sketch_2026_02_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_09) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_08
[sketch_2026_02_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_08) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_07
[sketch_2026_02_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_07) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_06
[sketch_2026_02_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_06) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_05
[sketch_2026_02_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_05) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_04
[sketch_2026_02_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_04) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_03
[sketch_2026_02_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_03) [[py5](https://py5coding.org/)]
---
### sketch_2026_02_02
[sketch_2026_02_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_02) [[py5](https://py5coding.org/)]
WIP...
---
### sketch_2026_02_01
[sketch_2026_02_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_02_01) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_31
[sketch_2026_01_31](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_31) [[py5](https://py5coding.org/)]
I'm restarting my shape subdivision ideas, this time with simpler structures (maybe?) instead of an object oriented "Shape" class.
---
### sketch_2026_01_30
[sketch_2026_01_30](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_30) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_29
[sketch_2026_01_29](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_29) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_28
[sketch_2026_01_28](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_28) [[py5](https://py5coding.org/)]
A crude attempt at a noisy brush #PerlinNoise
---
### sketch_2026_01_27
[sketch_2026_01_27](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_27) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_26
[sketch_2026_01_26](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_26) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_25
[sketch_2026_01_25](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_25) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_24
[sketch_2026_01_24](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_24) [[py5](https://py5coding.org/)]
`py5.blend_mode(py5.MULTIPLY)`
---
### sketch_2026_01_23
[sketch_2026_01_23](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_23) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_22
[sketch_2026_01_22](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_22) [[py5](https://py5coding.org/)]
I enjoyed this one, randomizing the widths of rows and columns of a grid then applying a #TSP strategy. #genuary #genuary22 #genuary2026
---
### sketch_2026_01_21
[sketch_2026_01_21](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_21) [[py5](https://py5coding.org/)]
Ada meets Waldemar Cordeiro and Giorgio Moscati
(Learn more about them at https://www.waldemarcordeiro.com/ & https://ekac.org/moscati.html)
---
### sketch_2026_01_20
[sketch_2026_01_20](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_20) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_19
[sketch_2026_01_19](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_19) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_18
[sketch_2026_01_18](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_18) [[py5](https://py5coding.org/)]
10000 steps of walker that turns 30° one way if the step is prime and 30° the other way. #genuary #genuary18 #genuary2026
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### sketch_2026_01_17
[sketch_2026_01_17](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_17) [[py5](https://py5coding.org/)]
I'm not sure it would count as #genuary17 but I wanted to do this inspired by something I saw from @ranoya@vis.social
#genuary #genuary2026
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### sketch_2026_01_16
[sketch_2026_01_16](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_16) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_15
[sketch_2026_01_15](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_15) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_14
[sketch_2026_01_14](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_14) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_13
[sketch_2026_01_13](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_13) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_12
[sketch_2026_01_12](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_12) [[py5](https://py5coding.org/)]
#genuary #genuary12 #genuary2026 #3D boxes only
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### sketch_2026_01_11
[sketch_2026_01_11](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_11) [[py5](https://py5coding.org/)]
---
### sketch_2026_01_10
[sketch_2026_01_10](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_10) [[py5](https://py5coding.org/)]
#genuary #genuary10 #genurary2026
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### sketch_2026_01_09
[sketch_2026_01_09](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_09) [[py5](https://py5coding.org/)]
Tweaking an old idea of coloring Wolfram's Automata #genuary #genuary9 #genuary2026
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### sketch_2026_01_08
[sketch_2026_01_08](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_08) [[py5](https://py5coding.org/)]
#genuary #genuary8 #genuary2026
Tweaking a sketch from 2022...
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### sketch_2026_01_07
[sketch_2026_01_07](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_07) [[py5](https://py5coding.org/)]
The cool binary XOR based pattern I learned fron Ntsutae... now with #numpy
#genuary #genuary7 #genuary2026
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### sketch_2026_01_06
[sketch_2026_01_06](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_06) [[py5](https://py5coding.org/)]
#genuary6 #genuary #genurary2026
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### sketch_2026_01_05
[sketch_2026_01_05](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_05) [[py5](https://py5coding.org/)]
In 2021 I was working on some older code for a silly glyph editor, I couldn't resurrect the editor (yet) but I could still read some pickled glyphs data! I hope I get back to these studies again. Note: be careful about loading pickled data from untrusted sources, there is a nasty risk of "arbitrary code execution".
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### sketch_2026_01_04
[sketch_2026_01_04](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_04) [[py5](https://py5coding.org/)]
#genuary4 #genuary #genuary2026
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### sketch_2026_01_03
[sketch_2026_01_03](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_03) [[py5](https://py5coding.org/)]
Once I made a nice Fibonacci based animation, but this time I couldn't figure something I liked :(
#genuary #genuary 3 #genuary2026
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### sketch_2026_01_02
[sketch_2026_01_02](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_02) [[py5](https://py5coding.org/)]
#genuary2 #genuary #genuary2026
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### sketch_2026_01_01
[sketch_2026_01_01](https://github.com/villares/sketch-a-day/tree/main/2026/sketch_2026_01_01) [[py5](https://py5coding.org/)]
#genuary #genuary1 #genuary2026
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