TAPESTRY: The Art of Representation and Abstraction
Transformation: Rotation, turn, spin
The rotation transormation leaves the transformed object the same size, but turned relative to the original position.
The rotation is controlled by a base point (which does not move) and an angle. As illustrated in the figure, if the base point is away from the object being transformed, the effect of the rotation may well include "movement" of the original shape.
In three dimensional rotations, the angle is often (but not always) measured in one of the primary coordinate system planes.
Remember, when performing multiple rotations, that Rotation "A" followed by Rotation "B" does not produce the same result as Rotation "B" followed by Rotation "A".
Last updated: April, 2014
