Return to space.c CVS log

Up to [CSRG BSD Unix] / 43BSDReno / lib / libplot / aed

Annotation of 43BSDReno/lib/libplot/aed/space.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)space.c    4.1 (Berkeley) 11/11/83";
        !             3: #endif
        !             4: 
        !             5: #include "aed.h"
        !             6: 
        !             7: /*---------------------------------------------------------
        !             8:  *     Space sets up the world-to-screen transformation so
        !             9:  *     that the rectangular area described by (x0, y0) and
        !            10:  *     (x1, y1) will all be on-screen.
        !            11:  *
        !            12:  *     Results:        None.
        !            13:  *
        !            14:  *     Side Effects:
        !            15:  *     Our own variables scale, xbot, and ybot are changed.
        !            16:  *---------------------------------------------------------
        !            17:  */
        !            18: space(x0, y0, x1, y1)
        !            19: int x0, y0, x1, y1;
        !            20: {
        !            21:     int xscale, yscale, xsize, ysize;
        !            22:     xscale = (GRXMAX<<12)/(x1-x0);
        !            23:     yscale = (GRYMAX<<12)/(y1-y0);
        !            24:     if (xscale > yscale) scale = yscale;
        !            25:     else scale = xscale;
        !            26:     scale = (scale*9)/10 - 1;
        !            27:     if (scale<1) scale = 1;
        !            28:     xsize = (2048*GRXMAX)/scale + 1;
        !            29:     xbot = (x1+x0)/2 - xsize;
        !            30:     ysize = (2048*GRYMAX)/scale + 1;
        !            31:     ybot = (y1+y0)/2 - ysize;
        !            32: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.