TAPESTRY: The Art of Representation and Abstraction
Transformation: Scale, enlarge, resize, grow, shrink
An object which is scaled remains the same shape, but is reduced or enlarged in size in a proportionate fashion. The scaling operation shown in the figure involves enlarging the black square. Notice how the point p1 is transformed into p2. Notice also that there is an anchor point (a in the figure) which remains in the same position. This point is often one point of the object being scaled, but need not be (see below).The simplest scaling operation simply multiplies all coordinates of the scaled object by a uniform amount. Since this changes all non-zero coordinates, it also effectivly moves the object, an unintended side-effect. The "anchor point" for such a scaling operation is the origin itself, which remains unmoved.
Last updated: April, 2014
