rinted or displayed at a size determined by the number of pixels in the image. Printing or displaying one at any other size can create unwanted patterns in the image. Bitmap images have large file sizes that are determined by the image’s dimensions in pixels and color depth. To reduce this problem, some graphic formats such as GIF and JPEG store the images in compressed format (Curtin 220).Vector graphics are really just a set of graphical objects such as lines, rectangles, ellipses, arcs, or curves, called primitives that the program stores as numerical coordinates and mathematical formulas specifying their shape and position in the image (Curtin 221). Draw programs, also called vector graphics programs, are a format widely used by computer-aided design programs to create detailed engineering and design drawings, and have become popular in multimedia for 3D animation.Draw programs have a number of advantages over paint programs: Precise control over lines and colors. Ability to skew and rotate objects to see them from different angles or add perspective. Ability to scale objects to any size to fit the available space. Vector graphics always print at the best resolution of the printer no matter what time you make them. Color blends and shadings can be easily changed. Ability to wrap text around objects.When working with a draw program, you can display the image in two views: wire frame view or shaded. In wire frame view, you see just the underlying lines in a skeletal view of the image ("Multimedia"). The image is displayed this way because it can be manipulated on the screen a lot faster. To see what the finished model looks like, you apply colors to the wire frame and display it with the wire frame covered by shaded surfaces. Various techniques are used to make images more realistic or interesting, and even put them in motion.Vector graphics come in two basic forms, 2D and 3D, 2D g...
