screenspa(3g) — 4D1 2.0



     screenspace(3G)                                   screenspace(3G)



     NAME

          screenspace - makes a program interpret graphics positions

          as absolute screen coordinates


     SPECIFICATION

          C         screenspace()




          FORTRAN   subroutine screen


     DESCRIPTION

          screenspace makes a program interpret graphics positions as

          absolute screen coordinates.  This allows pixels and

          locations outside a program's graphics window to be read.


          screenspace is equivalent to:


          int xmin, ymin;


          getorigin(&xmin, &ymin);

          viewport(-xmin, XMAXSCREEN-xmin, -ymin, YMAXSCREEN-ymin);

          ortho2(-0.5, 1279.5, -0.5, 1023.5);


     SEE ALSO

          getorigin, viewport, ortho2


          Using mex, Chapter 2, Programming with mex


     NOTE

          This routine is available only in immediate mode.

























     Page 1                                          (printed 8/20/87)
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