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Description of Objects in VPython

Rotating an Object

The cylinder, arrow, cone, pyramid, sphere, ring, box, and ellipsoid objects (but not curve or convex) can be rotated about a specified origin:

object.rotate(angle=pi/4., axis=axis, origin=pos)

The rotate function applies a transformation to the specified object (sphere, box, etc.). The transformation is a rotation of angle radians, counterclockwise around the line defined by origin and origin+axis. By default, rotations are around the object's own pos and axis.