display of Information
design
Simulation
User Interfaces
In many works two or three of these areas have been worked on and in some cases people work on all these areas. Let us now study each of these areas separately… Display of Information The field of ComputerGraphics has always been associated with the display of information. Examples of the use of orthographic projections to display floorplans of buildings can be found on 4000-year-old Babylonian stone tablets. Mechanical methods for creating perspective drawings were developed during the Renaissance. Countless engineering students have become familiar with interpreting data plotted on log paper. More recently ,software packages that allow interactive design of charts incorporating color ,multiple data sets ,and alternate plotting methods have become the norm. In fields such as architecture and mechanical design ,hand drafting is being replaced by computer-based drafting systems using plotters and workstations. Medical imaging uses computer graphics in a number of exciting ways.Like it has helped a lot in visualizing the scientific amagesthe scientists nowadays have super computers for many purposes like researches and all but graphics displays to be the best field till date… Design In Professions such like engineering and architecture people are concerned with design. Although their applications vary ,most designers face similar difficulties and use similar methods. One of the principal characteristics of most design problems is the lack of a particular solution. So ,the designer will examine a potential design and then will modify it ,possibly many times ,in an attempt to achieve a better solution. Computer graphics has become an indispensable and unreplaceable element in this Particular process. Simulation So some of the most impressive and familiar uses of computer graphics can be classified as simulations. Video games demonstrate both the visual appeal of computer graphics and our ability to generate complex imagery in real time. The insides of an arcade game reveal state-of-the-art hardware and software. Computer-generated images are also the heart of flight simulators ,which have become the standard method for training pilots. The savings in dollars and lives realized from use of these simulators has been enormous. The computer-generated images we see on television and in movies have advanced to the point that they are almost indistinguishable from real-world images.
User interfaces The interface between the Programmer or users and the computer has been radically altered by the use of computer graphics. Consider the electronic office. The figures in this book were produced through just such an interface. A secretary sits at a workstation ,rather than at a desk equipped with a typewriter. This user has a pointing device ,such as a mouse,that allows him to communicate with the workstation. The display consists of a number of icons that represent the various operations the secretary can perform. For example ,there might be an icon of a mailbox that ,if pointed to and clicked on ,causes any electronic-mail messages to appear on the screen. An icon of a wastepaper basket allows the user to dispose of unwanted mail ,whereas an icon of a file cabinet is used to save letters or other documents.
A similar graphical interface would be part of our circuit-design system. Within the context of this book ,we see these interfaces as being obvious uses of computer graphics . From the perspective of the secretary using the office-automation system or of the circuit designer ,however ,the graphics is a secondary aspect of the task to be done. Although they never write graphics programs ,multitudes of computer users use computer graphics.
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