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Chapter 29. GRAPHICS APPLICATIONS > ZOOMING IN ON LARGE IMAGES

ZOOMING IN ON LARGE IMAGES

A third way to enable users to view portions of a large image is to enable them to see the entire image at first, and then click a spot on the image to zoom in to full size. This is particularly useful for maps, where the shrunken, zoomed-out view of the map is still somewhat viewable.

A program that does this starts out looking like Figure 29.4. The entire image is visible on the screen. Users then click a spot and the result looks very much like Figure 29.2 (shown earlier). The only difference is that you need to use some extra cursors, such as a magnifying glass, to let users know what is going on.


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