20

2025/sketch_2025_06_20/sketch_2025_06_20.py

@@ -0,0 +1,78 @@
+from itertools import product
+from collections import deque
+
+from shapely.geometry import LineString, LinearRing
+import py5
+from py5_tools import animated_gif
+
+MARGIN = 64
+SPACING = 128 + 64
+seed = 11
+
+def setup():
+    global grid
+    py5.size(512, 512, py5.P3D)
+    grid = list(product(range(MARGIN, py5.width, SPACING), repeat=2))
+    make_polys()
+    py5.hint(py5.ENABLE_STROKE_PERSPECTIVE)
+    animated_gif(f'{seed}.gif', duration=0.1, frame_numbers=range(1, 361, 5))
+    
+def make_polys():
+    global poly_a, poly_b
+    py5.random_seed(seed)
+    poly_a = make_simple_poly(grid)
+    poly_b = make_simple_poly(grid)
+    
+def make_simple_poly(grid, grid_pts= 5):
+    simple = False
+    while not simple:
+        poly = LinearRing(py5.random_sample(grid, grid_pts)).buffer(32).exterior
+        simple = poly.is_simple
+    return poly
+    
+def draw():
+    py5.background(200)
+    py5.translate(256, 256, -256)
+    py5.rotate_y(py5.radians(60))
+    py5.translate(-256, -256)
+    py5.stroke_weight(5)
+    #py5.stroke(0, 0, 200)
+    #py5.points(grid)
+    py5.stroke(255)
+    Z_OFFSET = 256
+    with py5.push_matrix():
+        py5.translate(0, 0, -Z_OFFSET)
+        py5.shape(poly_a)
+        py5.translate(0, 0, Z_OFFSET * 2)
+        py5.shape(poly_b)
+    
+    py5.stroke(0)
+    py5.stroke_weight(1)
+    points_a = get_poly_points(poly_a, 60)
+    points_b = get_poly_points(poly_b, 60, offset=(90 + py5.frame_count // 6) % 60)
+    py5.lines((xa, ya, -Z_OFFSET, xb, yb, Z_OFFSET) for (xa, ya), (xb, yb)
+              in zip(points_a, points_b))
+    
+def get_poly_points(poly, num = 100, offset=0):
+    d = poly.length / (num - 1)
+    pts = deque((p.x, p.y) for p in
+                (poly.interpolate(i * d)
+                 for i in range(num)))
+    pts.rotate(offset)
+    return pts
+
+# from typing import Sequence
+# def lerp_sequence(a: Sequence, b: Sequence, t: float) -> Sequence:
+#     return tuple(lerp_sequence(ca, cb, t) if isinstance(ca, Sequence)
+#                  else py5.lerp(ca, cb, t)             
+#                  for ca, cb in zip(a, b))
+
+def key_pressed():
+    global seed
+    py5.save_frame('###.png')
+    seed += 1
+    make_polys()
+
+    
+
+py5.run_sketch(block=False)

docs/README.md

@@ -20,6 +20,16 @@ If you appreciate what I have been doing, you may also support my artistic work,
 
 2025 \| [<b>2024</b>](2024.md) \| [<b>2023</b>](2023.md) \| [<b>2022</b>](2022.md) \| [<b>2021</b>](2021.md) \| [<b>2020</b>](2020.md) \| [<b>2019</b>](2019.md) \| [<b>2018</b>](2018.md) 
 
+---
+
+### sketch_2025_06_20
+
+![sketch_2025_06_20](https://raw.githubusercontent.com/villares/sketch-a-day/main/2025/sketch_2025_06_20/sketch_2025_06_20.gif)
+
+[sketch_2025_06_20](https://github.com/villares/sketch-a-day/tree/main/2025/sketch_2025_06_20) [[py5](https://py5coding.org/)]
+
+
+
 ---
 
 ### sketch_2025_06_19