Focus on Computer Graphics Focus on Computer Graphics Focus on Computer Graphics Focus on Computer Graphics Focus on Computer Graphics Focus on Computer Graphics

© 2008 Prentice-Hall, Inc. Slide 9

Chapter 6 Focus on Computer Graphics

Digital photo management software programs such as Apple iPhoto and Microsoft PictureIt simplify and automate common tasks associated with capturing, organizing, editing, and sharing digital images. Take an image Combine it with other objects Make a statement © 2008 Prentice-Hall, Inc. Slide 10

Chapter 6 Focus on Computer Graphics

Drawing: Object-Oriented Graphics Drawing software stores a picture as a collection of lines and shapes called object-oriented or vector graphics. Memory demands on storage are not as high as for bit- mapped images. Many drawing tools–line, shape, and text tools–are similar to painting tools in bitmapped programs. © 2008 Prentice-Hall, Inc. Slide 11

Chapter 6 Focus on Computer Graphics

PostScript: a standard page-description language for describing text fonts, illustrations, and other elements of the printed page Used by professional drawing programs such as Adobe Illustrator and Macromedia FreeHand Built into many laser printers and other high-end output devices so those devices can understand and follow PostScript instructions PostScript-based drawing software constructs a PostScript program as the user draws © 2008 Prentice-Hall, Inc. Slide 12

Chapter 6 Focus on Computer Graphics

 Bit-mapped painting pixels gives you these advantages:  More control over textures, shading, and fine detail  Appropriate for screen displays, simulating natural paint media, and embellishing photographs © 2008 Prentice-Hall, Inc. Slide 13

Chapter 6 Focus on Computer Graphics

Object-oriented drawing gives you these advantages:  Better for creating printed graphs, charts, and illustrations  Lines are cleaner and shapes are smoother © 2008 Prentice-Hall, Inc. Slide 14

Chapter 6 Focus on Computer Graphics

 Some integrated programs contain both drawing and painting modules  Allows you to choose the right tool for each job  Some programs merge features of both in a single application  Blurs the distinction between types  Offers new possibilities for amateur and professional illustrators © 2008 Prentice-Hall, Inc. Slide 15

Chapter 6 Focus on Computer Graphics

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