jg36@prism.gatech.EDU (GRIFFIN,JEFFREY A) (07/20/90)
Does anyone have an algorithm for scaling bitmaps? I am looking for something that will scale to a given size, X by Y. Does anyone have an algorithm that would scale a bitmap by superimposing a fixed size grid over the bitmap and determine the values for each box of the grid. The subs can be in Fortran or C. Any suggestions or better ideas would be much appreciated. Thanks for the help!!
blbates@AERO4.LARC.NASA.GOV ("Brent L. Bates AAD/TAB MS361 x42854") (07/20/90)
I am not sure what you are trying to do, but, maybe this will help. When I display bitmap images, I either plot each pixel as a point, flat shaded polygon, or a Gouraud shaded polygon. This is slower than using pixel routines, but it is very easy to scale the image up or down using ortho or techniques. -- Brent L. Bates NASA-Langley Research Center M.S. 361 Hampton, Virginia 23665-5225 (804) 864-2854 E-mail: blbates@aero4.larc.nasa.gov or blbates@aero2.larc.nasa.gov