sketch-a-day
coding a visual idea a day
Welcome! My name is Alexandre Villares 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. You can follow this project on Mastodon at pynews.com.br/@villares.
The results 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, 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.
Please do not hesitate to contact me regarding licenses to use my work, teaching opportunities, consulting or other projects. Moreover, I kindly invite you to subscribe to my newsletter, [sketch-mail - on pause]. If you appreciate what I have been doing, you may support my artistic work, research and open educational resources I publish on-line using the Brazilan PIX key at 46c37783-5edb-4f1c-b3a8-1309db11488c, PayPal or gumroad.com/villares.
Here are listed some of the tools I have been using:
- [py5] A new Processing Java + Python 3 amazing tool
- [pyp5js] initially a Python to p5js trancriptor, now a pyodide + p5js tool
- [pyscript] A new Python in the browser tool.
- [Py.Processing] Processing Python mode
- [Processing Java Processing Java or “standard” mode
- [p5.js] JavaScript library from the Processing Foundation
- [shoebot] Generate 2D vector graphics with Python
- [FreeCAD] A wonderful 3D modeling tool, CAD & more, Python infused.
- [p5py] A Python 3 implementation of Processing ideas (no Java needed)
- [flat] A generative infrastructure library for Python (via Allison Parrish’s Bezmerizing)
- [VPython] Python + glowscript gives you 3D on the browser
- [PySimpleGUI] Python GUIs for Humans
2023 | 2022 | 2021 | 2020 | 2019 | 2018
sketch_2023_09_24
my folder browser is mostly working…
sketch_2023_09_23
sketch_2023_09_22
Slowly prograssing on my file/image browser from scratch…
sketch_2023_09_21
sketch_2023_09_20
Small progress on my image browser, trying some folder navigation “from scratch” with py5… I can get some thumbnails from the OS, but others fail:
sketch_2023_09_19
sketch_2023_09_18
work in progress
sketch_2023_09_17
sketch_2023_09_16
#SãoPaulo
sketch_2023_09_15
sketch_2023_09_14
sketch_2023_09_13
sketch_2023_09_12
Based on rain code by @claromes!
sketch_2023_09_11
Tem dias que eu fico bem feliz com o resultado do meu sketch do dia :)
sketch_2023_09_10
sketch_2023_09_09
https://github.com/villares/sketch-a-day/blob/main/2023/sketch_2023_09_09/sketch_2023_09_09.py #NumPy
sketch_2023_09_08
#numpy
sketch_2023_09_07
sketch_2023_09_06
sketch_2023_09_05
sketch_2023_09_04
github.com/villares/sketch-a-day
sketch_2023_09_03
sketch_2023_09_02
#NumPy
sketch_2023_09_01
#NumPy
sketch_2023_08_31
sketch_2023_08_30
sketch_2023_08_29
sketch_2023_08_28
#osmnx #GeoDataFrame #OpenStreetMap contributors data
sketch_2023_08_27
#São Paulo #osmnx data from #OpenStreetMap contributors. Av. Paulista in red.
sketch_2023_08_26
sketch_2023_08_25
sketch_2023_08_25 [Python]
#Python #matplotlib explorando dados © contribuidores do #OpenStreetMaps
sketch_2023_08_24
sketch_2023_08_23
sketch_2023_08_22
sketch_2023_08_21
#trimesh
sketch_2023_08_20
more #trimesh
sketch_2023_08_19
more #trimesh experiments
sketch_2023_08_18
PNG export examples
sketch_2023_08_17
more trimesh studies!
sketch_2023_08_16
trimesh studies
sketch_2023_08_15
Segunda aula do curso com Daniel Bueno no Sesc Av. Paulista!
sketch_2023_08_14
Refatorei o meu código de tokenize, aprendi um pouco sobre ANSI escape sequences, e agora consigo desenhar um pouco melhor (vai ser útil pros meus zines!
sketch_2023_08_13
Work in Progress - again trying to draw some source code to the screen
sketch_2023_08_12
sketch_2023_08_11
sketch_2023_08_10
sketch_2023_08_09
sketch_2023_08_08
sketch_2023_08_08 [Primeira aula do curso de quadrinhos experimentais com Daniel Bueno!]
sketch_2023_08_07
sketch_2023_08_07 [Interactive quadratic vertex curve #pyp5js]
sketch_2023_08_06
quadratic curves on shapely
sketch_2023_08_05
sketch_2023_08_04
sketch_2023_08_03
sketch_2023_08_02
WIP
sketch_2023_08_01
sketch_2023_07_31
sketch_2023_07_30
sketch_2023_07_29
sketch_2023_07_28
sketch_2023_07_27
sketch_2023_07_26
sketch_2023_07_25
sketch_2023_07_24
sketch_2023_07_23
sketch_2023_07_22
sketch_2023_07_21
Fragments of a São Paulo Map from 1930 kept at Museu Paulista
sketch_2023_07_20
sketch_2023_07_19
sketch_2023_07_18
sketch_2023_07_17
sketch_2023_07_16
sketch_2023_07_15
sketch_2023_07_14
sketch_2023_07_13
sketch_2023_07_12
sketch_2023_07_11
sketch_2023_07_10
sketch_2023_07_09
sketch_2023_07_08
sketch_2023_07_07
sketch_2023_07_06
sketch_2023_07_05
sketch_2023_07_04
sketch_2023_07_03
sketch_2023_07_02
sketch_2023_07_01
sketch_2023_06_30
sketch_2023_06_29
sketch_2023_06_28
sketch_2023_06_27
sketch_2023_06_26
sketch_2023_06_25
sketch_2023_06_24
sketch_2023_06_23
sketch_2023_06_22
sketch_2023_06_21
sketch_2023_06_20
sketch_2023_06_19
sketch_2023_06_18
sketch_2023_06_17
sketch_2023_06_16
Draw interrupted stencil-ready lines with py5.
Left-click to add vertex. Right-click to stop polyline. Backspace to remove last vertex. ‘e’ to erase everything. ‘s’ to save SVG. Mouse wheel to change line thickness.
sketch_2023_06_15
sketch_2023_06_14
sketch_2023_06_13
sketch_2023_06_11
sketch_2023_06_10
sketch_2023_06_09
sketch_2023_06_08
sketch_2023_06_07
sketch_2023_06_06
sketch_2023_06_05
sketch_2023_06_04
sketch_2023_06_03
sketch_2023_06_02
sketch_2023_06_01
Back to an earlier idea, but using shapely!
sketch_2023_05_31
partial sample of the animation
sketch_2023_05_30
sketch_2023_05_29
sketch_2023_05_28
Based on https://botsin.space/@bitartbot/110448213578682186]]
def func(x, y):
try:
return (~(int((x & y) / (x ^ 8)) | ((y * 10) % (~x)))) % 3 > 0
except ZeroDivisionError:
return 0
sketch_2023_05_27
sketch_2023_05_26
sketch_2023_05_25
sketch_2023_05_24
sketch_2023_05_23
sketch_2023_05_22
sketch_2023_05_21
sketch_2023_05_20
sketch_2023_05_19
sketch_2023_05_18
sketch_2023_05_17
sketch_2023_05_16
sketch_2023_05_15
sketch_2023_05_14
sketch_2023_05_13
sketch_2023_05_12
sketch_2023_05_11
sketch_2023_05_10
sketch_2023_05_09
sketch_2023_05_08
sketch_2023_05_07
sketch_2023_05_06
sketch_2023_05_05
sketch_2023_05_04
sketch_2023_05_04 [PySimpleGUI]
sketch_2023_05_03
sketch_2023_05_02
sketch_2023_05_01
sketch_2023_04_30
sketch_2023_04_29
sketch_2023_04_28
sketch_2023_04_27
More OpenCV
sketch_2023_04_26
sketch_2023_04_25
sketch_2023_04_24
sketch_2023_04_23
sketch_2023_04_22
sketch_2023_04_21
Transparent PNG export accumulating frames
sketch_2023_04_20
Recreating Ira Greenberg’s 2 colour Trouched + MAM Trouchet example
sketch_2023_04_19
Trouchet WIP
sketch_2023_04_18
sketch_2023_04_17
5 colors, random choice of next, but do not repeat last 2.
sketch_2023_04_16
4 colors, do not repeat last 3… this creates a cycle. Each horiz. band repeats process, so new configuration.
sketch_2023_04_15
sketch_2023_04_14
sketch_2023_04_13
sketch_2023_04_12
sketch_2023_04_11
sketch_2023_04_10
sketch_2023_04_09
sketch_2023_04_08
sketch_2023_04_07
sketch_2023_04_06
sketch_2023_04_05
d’aprés Vera Molnár’s Des(ordres)
sketch_2023_04_04
sketch_2023_04_03
sketch_2023_04_02
sketch_2023_04_01
sketch_2023_03_31
sketch_2023_03_30
sketch_2023_03_29
Trying to recreate this work by Vera Molnár: https://collections.vam.ac.uk/item/O1488630/print/
sketch_2023_03_28
sketch_2023_03_27
OpenCV edge detection on a video
sketch_2023_03_26
OpenCV edge detection on a video
sketch_2023_03_25
Java swing
sketch_2023_03_24
sketch_2023_03_23
sketch_2023_03_22
sketch_2023_03_21
sketch_2023_03_21 [Processing Java]
sketch_2023_03_20
Porting a Processing forum example to py5
sketch_2023_03_19
Porting a Processing forum example to py5
sketch_2023_03_18
sketch_2023_03_17
sketch_2023_03_16
Based on Tom Larrow’s code.
sketch_2023_03_15
Inspired by Vera Molnár’s Icône 2020
sketch_2023_03_14
Learning more numpy…
sketch_2023_03_13
sketch_2023_03_12
144 combinations of sizes, nubmer of points and 2 colors.
sketch_2023_03_11
sketch_2023_03_10
sketch_2023_03_09
sketch_2023_03_08
sketch_2023_03_07
sketch_2023_03_06
sketch_2023_03_05
sketch_2023_03_04
sketch_2023_03_03
Another numbered squares idea…
sketch_2023_03_02
back to shuffling squares?
sketch_2023_03_01
Tried threads, still too slow. I shoul try Numpy… I asked for Melissa Weber’s helpp
sketch_2023_02_28
A horribly slow Particle Life simulation (adapted from the Noite de Processing one) WIP
sketch_2023_02_27
sketch_2023_02_26
sketch_2023_02_25
sketch_2023_02_24
sketch_2023_02_23
sketch_2023_02_22
sketch_2023_02_21
sketch_2023_02_20
sketch_2023_02_19
sketch_2023_02_18
sketch_2023_02_17
sketch_2023_02_16
sketch_2023_02_15
sketch_2023_02_14
sketch_2023_02_13
sketch_2023_02_12
sketch_2023_02_11
sketch_2023_02_10
sketch_2023_02_09
sketch_2023_02_08
sketch_2023_02_07
sketch_2023_02_06
sketch_2023_02_05
sketch_2023_02_04
sketch_2023_02_03
sketch_2023_02_02
sketch_2023_02_01
sketch_2023_01_31
sketch_2023_01_30
# Kate Rose Morley's palette
# https://iamkate.com/data/12-bit-rainbow/
#Processing #Python #py5 imported mode
#genuary #genuary30 #トゥートProcessing
from itertools import product
palette = (
'#817', '#a35', '#c66', '#e94',
'#ed0', '#9d5', '#4d8', '#2cb',
'#0bc', '#09c', '#36b', '#639'
)
def setup():
global palavras
size(800, 800)
no_loop()
rect_mode(CENTER)
no_stroke()
def draw():
w = 400
i = 0
for x, y in product(range(0, width, w), repeat=2):
for z in range(3):
fill(palette[i])
square(w / 2 + x, w / 2 + y, w / (z / 2 + 1))
i += 1
sketch_2023_01_29
from random import sample
from itertools import product
palette = (
'#817', '#a35', '#c66', '#e94',
'#ed0', '#9d5', '#4d8', '#2cb',
'#0bc', '#09c', '#36b', '#639'
)
def setup():
global palavras
size(800, 800)
no_loop()
rect_mode(CENTER)
no_stroke()
def draw():
w = 100
for x, y in product(range(0, width, w), repeat=2):
d = width // w
cores = sample(palette, d)
for z in range(d):
fill(cores[z])
square(w / 2 + x, w / 2 + y, w / (z / 2 + 1))
def key_pressed():
redraw()
sketch_2023_01_28
sketch_2023_01_27
Based on Tom Larrow’s experiment at: https://codeberg.org/TomLarrow/creative-coding-experiments/src/branch/main/x_0049/x_0049.py
sketch_2023_01_26
d’aprés Vera Molnar “interruptions” (https://collections.vam.ac.uk/item/O1193775/interruptions-drawing-vera-molnar/)dapr
sketch_2023_01_25
sketch_2023_01_24
sketch_2023_01_23
sketch_2023_01_22
sketch_2023_01_21
sketch_2023_01_20
sketch_2023_01_19
sketch_2023_01_18
sketch_2023_01_17
sketch_2023_01_16
sketch_2023_01_15
sketch_2023_01_14
sketch_2023_01_13
sketch_2023_01_12
sketch_2023_01_11
sketch_2023_01_09
sketch_2023_01_10
- To listen: recording.mp4
sketch_2023_01_08
sketch_2023_01_07
"""
A reticule of colored circles forms The Beatles's Abbey Road album cover
"""
import py5
def setup():
py5.size(1000, 1000)
py5.color_mode(py5.HSB)
img = py5.load_image('ar.jpg')
py5.no_stroke()
py5.background(0)
s = 10
w = py5.width // s
for i in range(w):
for j in range(w):
x, y = s // 2 + i * s, s // 2 + j * s
px = img.get(x, y)
h = py5.hue(px)
sat = py5.saturation(px)
b = 0.36 + py5.brightness(px) / 400
py5.fill(h, sat * 2, 255)
py5.circle(x, y, s * b)
py5.save('out.png')
py5.run_sketch()
sketch_2023_01_06
D’aprés @ntsutae つぶやきProcessing https://twitter.com/ntsutae/status/1268432505356513280?s=20
sketch_2023_01_05
sketch_2023_01_04
from itertools import product
circles = []
intersections = []
def setup():
size(600, 600)
for x, y in product(range(100, 550, 50), repeat=2):
r = random(10, 60)
circles.append((x, y, r))
for xa, ya, ra in circles:
for xb, yb, rb in circles[1:]:
if (xa, ya) != (xb, yb):
pts = calc_cci(xa, ya, ra, xb, yb, rb)
intersections.extend(pts)
background(0, 0, 100)
stroke(255)
no_fill()
for x, y, r in circles:
circle(x, y, r * 2)
no_stroke()
fill(255, 0, 0)
for x, y in intersections:
circle(x, y, 5)
def calc_cci(x0, y0, r0, x1 ,y1, r1):
d = dist(x0, y0, x1, y1)
a = (r0 ** 2-r1 ** 2+d ** 2) / (2 * d)
hsqd = r0 ** 2 - a ** 2
if hsqd == 0:
return [(x0 + a * (x1 - x0) / d, y0 + a * (y1 - y0) / d)]
elif hsqd > 0:
h = sqrt(hsqd)
x2 = x0 + a * (x1 - x0) / d
y2 = y0 + a * (y1 - y0) / d
xa, ya = x2 + h * (y1 - y0) / d, y2 - h * (x1 - x0) / d
xb, yb = x2 - h * (y1 - y0) / d, y2 + h * (x1 - x0) / d
return[(xa, ya), (xb, yb)]
else:
return []
sketch_2023_01_03
sketch_2023_01_03 [Processing Java] & [py5]
Java version:
// Para criar imagem com glitch a partir de
// arquivo JPG na sub-pasta /data
PImage img;
int n = 10; // número de passos estragando bytes!
String nomeArquivo = "sesc.jpg";
void setup() {
size(382, 510);
noLoop();
}
void draw() {
byte[] data=loadBytes(nomeArquivo); // carrega a imagem original
for (int i = 0; i < n; i++) {
int loc=(int)random(1, data.length); // sorteia uma posição no array
data[loc]=(byte)random(255); // sorteia um valor de byte e substitui
}
saveBytes("gliched_" + nomeArquivo, data); // salva um novo arquivo modificado
img = loadImage("gliched_" + nomeArquivo); // carrega a imagem modificada
image (img, 0, 0);
}
void keyPressed() {
saveFrame("###.png");
redraw();
}
Python version:
# using py5 (py5coding.org) imported mode
from PIL import Image
import io
def setup():
size(517, 707)
no_loop()
def draw():
with open('data/a.jpg', 'rb') as f:
list_jpg_bytes = list(f.read())
for _ in range(10):
loc = random_int(len(list_jpg_bytes) - 1)
list_jpg_bytes[loc] = random_int(1, 255)
stream = io.BytesIO(bytes(list_jpg_bytes))
new_img = Image.open(stream)
try:
image(convert_image(new_img), 0, 0) # PIL.Image to py5Image
except: # OSError / UnidentifiedImageError:
pass
def key_pressed():
save_frame("###.png");
redraw()
sketch_2023_01_02
Genuary 2 - 10 minutes
def setup():
size(600, 600)
color_mode(HSB)
no_stroke()
rect_mode(CENTER)
def draw():
background(0)
m = frame_count #1 + mouse_x // 10
for x in range(100):
cx = 50 + x * 5
for y in range(100):
cy = 50 + y * 5
c = (x ^ y) ** 13 % m
fill(c * (255 / m), 255, 255)
# print(c, cx, cy)
square(cx, cy, 5)
if frame_count % 10 == 0 and frame_count <= 100:
save_frame('###.png')
sketch_2023_01_01
Genuary 1 - loop
def setup():
size(600, 600)
blend_mode(ADD)
no_stroke()
def draw():
background(0)
xc = yc = 300
r = 250
for i in range(6):
m = cos(radians(frame_count / 2)) ** 2
a = radians(frame_count / 2 + 60 * i)
x = xc + r * cos(a)
y = yc + r * sin(a)
fill(0, 0, 255)
circle(x, y, 50)
x = xc + r * cos(a * m)
y = yc + r * sin(a * m)
fill(0, 255, 0)
circle(x, y, 50)
x = xc + r * cos(a * -m)
y = yc + r * sin(a * -m)
fill(255, 0, 0)
circle(x, y, 50)
2023 | 2022 | 2021 | 2020 | 2019 | 2018
The sketch-a-day project, images and code repository, by Alexandre B A Villares are licensed under Attribution-NonCommercial-NoDerivatives 4.0 International 
, except if marked/attributed otherwise in a file or code section. Please contact for licensing questions.