20

2024/sketch_2024_12_20/sketch_2024_12_20.py

@@ -0,0 +1,25 @@
+# Tetrahedron
+import py5
+from py5_tools import animated_gif
+import numpy as np
+
+def setup():
+    py5.size(600, 600, py5.P3D)
+    animated_gif('out.gif', duration=0.05,
+                 frame_numbers=range(1, 361, 3))
+
+def draw():
+    py5.background(0, 0, 100)
+    py5.translate(py5.width / 2, py5.height / 2, -py5.height)
+    py5.rotate_y(py5.radians(py5.frame_count))
+    tetrahdron(300)
+
+def tetrahdron(radius):
+    a = radius / 3 * 2
+    vs = np.array([(a,  a,  a), (-a, -a,  a),
+                   (-a, a, -a), ( a, -a, -a)])
+    sequence = np.array([0, 1, 2, 3, 0, 1, 3, 2, 1])
+    with py5.begin_shape(py5.TRIANGLE_STRIP):
+        py5.vertices(vs[sequence])
+
+py5.run_sketch(block=False)

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_20
+
+![sketch_2024_12_20](https://raw.githubusercontent.com/villares/sketch-a-day/main/2024/sketch_2024_12_20/sketch_2024_12_20.gif)
+
+[sketch_2024_12_20](https://github.com/villares/sketch-a-day/tree/main/2024/sketch_2024_12_20) [[py5](https://py5coding.org/)]
+
+A tetrahedron with #py5 and a bit of #NumPy ... Maybe tomorrow I'll tackle the icosahedron, but if I'm tired, I might do just use the built-in box() for the hexahedron ;)
+
 ---
 
 ### sketch_2024_12_19