By Donald Hearn, M. Pauline Baker

This well timed re-creation of a favored special effects booklet positive factors the interval in programming examples to illustrate the implementation of portraits program. those famous authors imagine no previous wisdom of special effects while offering the fundamental ideas for the layout, use, and knowing of special effects platforms. although, a few wisdom of C programming is thought because the reader learns tips to use algorithms for developing and manipulating portraits monitors.

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Extra info for Computer Graphics, C Version (2nd Edition)

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Back lighting is also commonly applied using solid-state electronic devices, so that the system is not completely dependent on outside light soufies. Colors can be displayed by using different materials or dyes and by placing a triad of color pixelsat each &reen location. Another method for conskctingk13s is to place a transistor at each pixel location, using thin-film transistor technology. The transistors are used to control the voltage at pixel locations and to prevent charge from gradually leaking out of the liquid-crystal cells.

Because no refreshing is needed, very complex pidures can be displayed at very high resolutions without flicker. Disadvantages of DVST systems are that they ordinarily d o not display color and that selected parts of a picture cannot he erased. To eliminate a picture section, the entire screen must be erased and the modified picture redrawn. The erasing and redrawing process can take several seconds for a complex picture. For these reasons, storage displays have been largely replaced by raster systems.

Flat-panel displays commonly use nematic (threadlike) liquid-crystal compounds that tend to keep the long axes of the rod-shaped molecules aligned. A flat-panel display can then be constructed with a nematic liquid crystal, as demonstrated in Fig. 2-16. Two glass plates, each containing a light polarizer at right angles to the-other plate, sandwich the liquid-crystal material. Rows of horizontal transparent conductors are built into one glass plate, and columns of vertical conductors are put into the other plate.

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