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12/physics.py

+from vpython import sphere, vec, vector, color, cylinder, rate, cos, cross, mag, sin, pi  # type: ignore
+sphere, vec, vector, color, cylinder, rate, cos, cross, mag, sin, pi  # type: ignore
+
+
+POSITION: vector = vec(0, 0, 0)
+SIZE: vector = vec(5, 0.5, 0.5)
+DIRS: list[int] = [0, 1, -1]
+RADIUS: int = 1
+
+
+def setup() -> dict[tuple[int, int, int], cylinder]:
+    ball: sphere = sphere(pos=POSITION, radius=RADIUS, color=color.yellow)
+    res = {}
+    return res
+
+
+def rotate(v: vector, e: vector, angle: float) -> vector:
+    """
+    See https://en.wikipedia.org/wiki/Rodrigues%27_rotation_formula#Statement
+
+    v + sin(theta) * (e x v) + (1 - cos(theta)) * (e x (e x v))
+
+    """
+    return v
+
+
+def scale(v: vector, by: float) -> vector:
+    return v
+
+
+ANGLE: float = pi/64
+CYLINDERS: dict[tuple[int, int, int], cylinder] = setup()
+
+while True:
+    rate(10)
+    for i in DIRS:
+        for j in DIRS:
+            for k in DIRS:
+                pass