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Path Creation and Path Painting

Path creation and path painting are separate tasks. First you create a path. When you want to render a path, you request Quartz to paint it. As you can see in Figure 3-1, you can choose to stroke the path, fill the path, or both stroke and fill the path. You can also use a path to constrain the drawing of other objects within the bounds of the path creating, in effect, a clipping area.

Figure 3-2 shows a path that has been painted and that contains two subpaths. The subpath on the left is a rectangle, and the subpath on the right is an abstract shape made up of straight lines and curves. Each subpath is filled and its outline stroked.

Figure 3-3 shows multiple paths drawn independently. Each path contains a randomly generated curve, some of which are filled and others stroked. Drawing is constrained to a circular area by a clipping area.

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