02

2024/sketch_2024_12_02/sketch_2024_12_02.py

@@ -0,0 +1,47 @@
+# Voronoy play
+
+import py5
+from shapely import Polygon
+from scipy.spatial import Voronoi
+
+num_points = 20
+
+def setup():
+    global seed_points, shapely_regions
+    py5.size(600, 600)
+    py5.color_mode(py5.HSB)
+    seed_points = [(py5.random_int(py5.width), py5.random_int(py5.height))
+                   for i in range(num_points)]
+    shapely_regions = generate_regions(seed_points, py5.width, py5.height)
+    py5.no_loop()
+
+def generate_regions(seed_points, w, h):
+    # add 4 points far from the visible region
+    extended_points = seed_points.copy()
+    extended_points.extend([
+         (-w * 4, -h * 4),
+         (-w * 4,  h * 4),
+         ( w * 4, -h * 4),
+         ( w * 4,  h * 4)
+         ])
+    voronoi = Voronoi(extended_points)
+    shapely_regions = []
+    for vs in voronoi.regions:
+        shapely_regions.append(
+            Polygon(voronoi.vertices[index] for index in vs if -1 not in vs)
+            )
+    return shapely_regions
+
+def draw():
+    for p in shapely_regions:
+        py5.fill(p.area / 500 % 255, 200, 200)
+        py5.shape(py5.convert_cached_shape(p))
+    py5.fill(0)
+    for x, y in seed_points:
+        py5.circle(x, y, 5)
+
+def key_pressed():
+    py5.save('out.png')
+
+
+py5.run_sketch()

docs/README.md

@@ -30,6 +30,16 @@ Here are listed some of the tools I have been using more recently:
 2024 \| [<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_2024_12_02
+
+![sketch_2024_12_02](https://raw.githubusercontent.com/villares/sketch-a-day/main/2024/sketch_2024_12_02/sketch_2024_12_02.png)
+
+[sketch_2024_12_02](https://github.com/villares/sketch-a-day/tree/main/2024/sketch_2024_12_02) [[py5](https://py5coding.org/)]
+
+#scipy #Voronoi #shapely
+
 ---
 
 ### sketch_2024_12_01