tidedu@mars.lerc.nasa.gov (William T. Dedula) (02/28/91)
Hello All; I am currently working on a "C" program which uses video windows (of various sizes) which seem to fade in and out. I need help in finding the right algorythm to do the job. Basically, I need to access a matrix of pixels within a video window at random BUT I only want to access each pixel ONE time and I want the program to exit when all pixels within the window have been addressed. A true random number generator won't work since there's an excellent chance many pixels will be accessed more than one time and I'll have no idea how long it would take to assure that all have been accessed. Although I have seen ways of doing this using tables in memory or similar concepts ... I figure there must be a mathematical function which can spit out the numbers quickly, and easily. Does anyone know if such a function exists and could you provide me with as much information as you can on it ??? Keep in mind that this routine must be able to handle any size of video window. video window. W. Tim Dedula Internet: N.A.S.A. Lewis Research Center tdedula@nasamail.nasa.gov Mail Stop 77-3 tidedu@mars.lerc.nasa.gov 21000 BrookPark Road aa252@cleveland.freenet.edu Cleveland, Ohio 44135 Phone (216) 433-3668 The National Aeronautics and Space Administration: Science and Technology ... for the Benefit of ALL Mankind !!!