rom/graphics/polydraw.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$    $Log
   4
   5     Desc: Graphics function PolyDraw()
   6     Lang: english
   7 */
   8 #include "graphics_intern.h"
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <proto/graphics.h>
  14
  15         AROS_LH3(void, PolyDraw,
  16
  17 /*  SYNOPSIS */
  18         AROS_LHA(struct RastPort *, rp, A1),
  19         AROS_LHA(LONG             , count, D0),
  20         AROS_LHA(WORD            *, polyTable, A0),
  21
  22 /*  LOCATION */
  23         struct GfxBase *, GfxBase, 56, Graphics)
  24
  25 /*  FUNCTION
  26         Draw connected lines from an array. The first line is drawn
  27         from the current pen position to the first entry in the array.
  28
  29     INPUTS
  30         rp        - RastPort
  31         count     - number of x,y pairs
  32         polyTable - array of x,y pairs
  33
  34     RESULT
  35
  36     NOTES
  37         Official prototype files declare count as LONG but
  38         original ROM code only uses low 16-bits.
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45
  46     INTERNALS
  47
  48     HISTORY
  49         29-10-95    digulla automatically created from
  50                             graphics_lib.fd and clib/graphics_protos.h
  51
  52 *****************************************************************************/
  53 {
  54     AROS_LIBFUNC_INIT
  55
  56     UWORD i, cnt;
  57     WORD x, y;
  58
  59     cnt = (UWORD)count; /* see NOTES */
  60     for(i = 0; i < cnt; i++)
  61     {
  62         x = *polyTable++;
  63         y = *polyTable++;
  64
  65         Draw(rp, x, y);
  66     }
  67
  68     AROS_LIBFUNC_EXIT
  69
  70 } /* PolyDraw */