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On Fri, Sep 19, 2014 at 6:36 AM, Krista D. Casada <[log in to unmask]> wrote:
> I have similar problems. What precisely does a vector graphic editor do?

Vector graphics are graphics where shapes are defined as sets of
connected points, as opposed to raster graphics where an image
consists of a grid of pixels (a "bitmap"). Photoshop is a raster
graphics program (conventionally called a "paint program"), while
Adobe Illustrator is an example of a vector graphics editor. The
advantages of vector graphics are that they can be easily shrunk or
blown up without any loss of quality, and lines are always straight
and curves are always smooth (since they are created by mathematical
functions rather than following the physical movement of a person's
hand); the disadvantages are that they're less intuitive the use
(using a "paintbrush" pointer is fairly easy to understand, but
molding 2D objects is odd), and that it's very difficult to give an
image an "organic" hand-drawn look (most vector graphics are
relatively low on fine detail).

Outline fonts, like PostScript and OpenType (most fonts these days)
are essentially sets of vector graphics with some additional features.