Apple Newton Utilities Guia do Utilizador descarregar pdf (Página 530)

Drawing and Graphics

13-4 About Drawing

Drawing also provides functions that allow you to perform a variety of mathematical

calculations on rectangles—changing their sizes, shifting them around, and so on.

An oval is a circular or elliptical shape deﬁned by the bounding rectangle that

encloses it. If the bounding rectangle is a square (that is, has equal width and

height), the oval is a circle, as shown in Figure 13-3.

Figure 13-3 An oval

An arc is a portion of the circumference of an oval bounded by a pair of radii

joining at the oval’s center; a wedge includes part of the oval’s interior. Arcs and

wedges are deﬁned by the bounding rectangle that encloses the oval, along with a

pair of angles marking the positions of the bounding radii, as shown in Figure 13-4.

Figure 13-4 An arc and a wedge

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Apple Newton Utilities Guia do Utilizador Página 530