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#sketchaday
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Still exploring John's rectangle clipping/division idea, now keeping the rects split by the knife and making them taller.
#Processing #Python #py5 #3D #CreativeCoding #SketchADay
Code at https://abav.lugaralgum.com/sketch-a-day (you can support this work making a small donation at https://gumroad.com/villares)
![# On the left, part of the code visible in the IDE (below). On the top right, 2D rectangles subdivided into more rectangles. On the bottom right you see the 2D rectangles extruded into volumes forming kind of stairs / zigurat structures.
import py5
rects = []
drag_x = drag_y = None
def setup():
py5.size(600, 800, py5.P3D)
rects.append(Rect(50, 50, 500, 300))
py5.text_align(py5.CENTER, py5.CENTER)
py5.color_mode(py5.HSB)
def draw():
py5.background(0)
py5.stroke(255)
for i, r in enumerate(rects):
py5.fill(r.c * 16, 100, 200, 200)
py5.rect(r.x, r.y, r.w, r.h)
py5.fill(255)
py5.text(str(i), r.x + r.w / 2, r.y + r.h / 2)
if drag_x:
with py5.push_style(): # will revert rect_mode at context end
py5.rect_mode(py5.CORNERS)
py5.stroke(0, 255, 255)
py5.no_fill()
py5.rect(py5.mouse_x, py5.mouse_y, drag_x, drag_y)
py5.translate(300, 600)
py5.rotate_x(py5.QUARTER_PI)
py5.translate(-300, -200)
for i, r in enumerate(rects):
py5.fill(r.c * 16, 100, 200)
box_from_corner(r.x, r.y, 0, r.w, r.h, r.c * 16)
def box_from_corner(x, y, z, w, h, d):
with py5.push_matrix():
py5.translate(x + w / 2, y + h / 2, z + d / 2)
py5.box(w, h, d)](https://ciberlandia.pt/system/media_attachments/files/110/515/720/689/376/651/original/3943c2fa1f148fa2.png "# On the left, part of the code visible in the IDE (below). On the top right, 2D rectangles subdivided into more rectangles. On the bottom right you see the 2D rectangles extruded into volumes forming kind of stairs / zigurat structures.
import py5
rects = []
drag_x = drag_y = None
def setup():
py5.size(600, 800, py5.P3D)
rects.append(Rect(50, 50, 500, 300))
py5.text_align(py5.CENTER, py5.CENTER)
py5.color_mode(py5.HSB)
def draw():
py5.background(0)
py5.stroke(255)
for i, r in enumerate(rects):
py5.fill(r.c * 16, 100, 200, 200)
py5.rect(r.x, r.y, r.w, r.h)
py5.fill(255)
py5.text(str(i), r.x + r.w / 2, r.y + r.h / 2)
if drag_x:
with py5.push_style(): # will revert rect_mode at context end
py5.rect_mode(py5.CORNERS)
py5.stroke(0, 255, 255)
py5.no_fill()
py5.rect(py5.mouse_x, py5.mouse_y, drag_x, drag_y)
py5.translate(300, 600)
py5.rotate_x(py5.QUARTER_PI)
py5.translate(-300, -200)
for i, r in enumerate(rects):
py5.fill(r.c * 16, 100, 200)
box_from_corner(r.x, r.y, 0, r.w, r.h, r.c * 16)
def box_from_corner(x, y, z, w, h, d):
with py5.push_matrix():
py5.translate(x + w / 2, y + h / 2, z + d / 2)
py5.box(w, h, d)")
#Processing #Python #numpy #shapely #py5 #sketchAday for 24th and 25th May
!["""
on a gray background, white tranlucent and rounded bars connect the 9 points of a square grid. Then, 10 green translucent bars have been fused and place on top of the white bars composition.
"""
from itertools import combinations, product
from shapely import Point, LineString, Polygon
from shapely import MultiPoint, MultiLineString, MultiPolygon
import shapely
grid = []
margin = 100
step = 200
def setup():
global paths, union, mp
size(600, 600)
pts = list(product(range(margin, width, step), repeat=2))
combos = combinations(pts, 2)
paths = [LineString(combo) for combo in combos]
mp = MultiPolygon([path.buffer(10) for path in paths])
union = shapely.unary_union(mp.geoms[:15])
#def draw():
background(200)
fill(255, 100)
draw_shapely(mp)
fill(0, 200, 0, 200)
draw_shapely(union)
save('out.png')
def draw_shapely(shp):
if isinstance(shp, (MultiPolygon, MultiLineString)):
for p in shp.geoms:
draw_shapely(p)
elif isinstance(shp, Polygon):
begin_shape()
for x,y in shp.exterior.coords:
vertex(x,y)
for hole in shp.interiors:
begin_contour()
for x,y in hole.coords:
vertex(x,y)
end_contour()
end_shape(CLOSE)
elif isinstance(shp, LineString):
with push_style():
no_fill()
begin_shape()
for x,y in shp.coords:
vertex(x,y)
end_shape()](https://ciberlandia.pt/system/media_attachments/files/110/430/338/007/798/840/original/1633ab8f39a607c7.png "\"\"\"
on a gray background, white tranlucent and rounded bars connect the 9 points of a square grid. Then, 10 green translucent bars have been fused and place on top of the white bars composition.
\"\"\"
from itertools import combinations, product
from shapely import Point, LineString, Polygon
from shapely import MultiPoint, MultiLineString, MultiPolygon
import shapely
grid = []
margin = 100
step = 200
def setup():
global paths, union, mp
size(600, 600)
pts = list(product(range(margin, width, step), repeat=2))
combos = combinations(pts, 2)
paths = [LineString(combo) for combo in combos]
mp = MultiPolygon([path.buffer(10) for path in paths])
union = shapely.unary_union(mp.geoms[:15])
#def draw():
background(200)
fill(255, 100)
draw_shapely(mp)
fill(0, 200, 0, 200)
draw_shapely(union)
save('out.png')
def draw_shapely(shp):
if isinstance(shp, (MultiPolygon, MultiLineString)):
for p in shp.geoms:
draw_shapely(p)
elif isinstance(shp, Polygon):
begin_shape()
for x,y in shp.exterior.coords:
vertex(x,y)
for hole in shp.interiors:
begin_contour()
for x,y in hole.coords:
vertex(x,y)
end_contour()
end_shape(CLOSE)
elif isinstance(shp, LineString):
with push_style():
no_fill()
begin_shape()
for x,y in shp.coords:
vertex(x,y)
end_shape()")
![Inumerous fused white bars connecting 16 points on a grid form a mask, the holes show an earlier numpy skerch of concentric colored circles.
from itertools import combinations, product
from shapely import Point, LineString, Polygon
from shapely import MultiPoint, MultiLineString, MultiPolygon
import shapely
import numpy as np
grid = []
margin = 0
step = 300
def setup():
global paths, union, mp
size(900, 900)
w, h = width, height
pts = list(product(range(margin, w + 1, step), repeat=2))
combos = combinations(pts, 2)
pairs = [((a, b), (c, d)) for ((a, b), (c, d)) in combos
if dist(a, b, c, d) < step * 3]
3print(pairs)
paths = [LineString(combo).buffer(7) for combo in pairs]
union = shapely.unary_union(paths)
R = np.linspace(0, 255, w).reshape(1, -1)
G = np.linspace(0, 255, h).reshape(-1, 1)
B = np.random.uniform(128, 255, (h, w))
A = np.array([[128 + dist(w /2, h / 2, x, y) % 128
for x in range(w)]
for y in range(h)])
rgba = np.dstack(np.broadcast_arrays(R, G, B, A))
img = create_image_from_numpy(rgba, 'RGBA');
image(img, 0, 0)
fill(255)
stroke_weight(2)
draw_shapely(union)
save('out.png')
def draw_shapely(shp):
if isinstance(shp, MultiPolygon):
for p in shp.geoms:
draw_shp(p)
elif isinstance(shp, Polygon):
begin_shape()
for x, y in shp.exterior.coords:
vertex(x, y)
for hole in shp.interiors:
begin_contour()
for x, y in hole.coords:
vertex(x, y)
end_contour()
end_shape(CLOSE)](https://ciberlandia.pt/system/media_attachments/files/110/430/339/525/825/734/original/5c0a6c50e8b43d4d.png "Inumerous fused white bars connecting 16 points on a grid form a mask, the holes show an earlier numpy skerch of concentric colored circles.
from itertools import combinations, product
from shapely import Point, LineString, Polygon
from shapely import MultiPoint, MultiLineString, MultiPolygon
import shapely
import numpy as np
grid = []
margin = 0
step = 300
def setup():
global paths, union, mp
size(900, 900)
w, h = width, height
pts = list(product(range(margin, w + 1, step), repeat=2))
combos = combinations(pts, 2)
pairs = [((a, b), (c, d)) for ((a, b), (c, d)) in combos
if dist(a, b, c, d) < step * 3]
3print(pairs)
paths = [LineString(combo).buffer(7) for combo in pairs]
union = shapely.unary_union(paths)
R = np.linspace(0, 255, w).reshape(1, -1)
G = np.linspace(0, 255, h).reshape(-1, 1)
B = np.random.uniform(128, 255, (h, w))
A = np.array([[128 + dist(w /2, h / 2, x, y) % 128
for x in range(w)]
for y in range(h)])
rgba = np.dstack(np.broadcast_arrays(R, G, B, A))
img = create_image_from_numpy(rgba, 'RGBA');
image(img, 0, 0)
fill(255)
stroke_weight(2)
draw_shapely(union)
save('out.png')
def draw_shapely(shp):
if isinstance(shp, MultiPolygon):
for p in shp.geoms:
draw_shp(p)
elif isinstance(shp, Polygon):
begin_shape()
for x, y in shp.exterior.coords:
vertex(x, y)
for hole in shp.interiors:
begin_contour()
for x, y in hole.coords:
vertex(x, y)
end_contour()
end_shape(CLOSE)")