rom/graphics/areregionsequal.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function AndRegionRegion()
   6     Lang: english
   7 */
   8
   9 #include "graphics_intern.h"
  10 #include <graphics/regions.h>
  11 #include "intregions.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <proto/graphics.h>
  17
  18         AROS_LH2(BOOL, AreRegionsEqual,
  19
  20 /*  SYNOPSIS */
  21         AROS_LHA(struct Region *, R1, A0),
  22         AROS_LHA(struct Region *, R2, A1),
  23
  24 /*  LOCATION */
  25         struct GfxBase *, GfxBase, 183, Graphics)
  26
  27 /*  FUNCTION
  28         Compares two regions.
  29
  30     INPUTS
  31         region1 - pointer to a region structure
  32         region2 - pointer to a region structure
  33
  34     RESULT
  35         TRUE if the regions are equal, FALSE otherwise.
  36
  37     NOTES
  38
  39     EXAMPLE
  40
  41     BUGS
  42
  43     SEE ALSO
  44         XorRegionRegion(), OrRegionRegion()
  45
  46     INTERNALS
  47
  48     HISTORY
  49
  50 *****************************************************************************/
  51 {
  52     AROS_LIBFUNC_INIT
  53
  54     struct RegionRectangle *rr1, *rr2;
  55
  56     if (!_AreRectsEqual(Bounds(R1), Bounds(R2)))
  57         return FALSE;
  58
  59     for
  60     (
  61         rr1 = R1->RegionRectangle, rr2 = R2->RegionRectangle;
  62         rr1 && rr2 && _AreRectsEqual(Bounds(rr1), Bounds(rr2));
  63         rr1 = rr1->Next, rr2 = rr2->Next
  64     );
  65
  66     return rr1 == rr2;
  67
  68     AROS_LIBFUNC_EXIT
  69 }