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- /* $XConsortium: regionstr.h,v 1.5 89/07/09 15:34:24 rws Exp $ */
- /***********************************************************
- Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
- and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Digital or MIT not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
- ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- SOFTWARE.
-
- ******************************************************************/
- #ifndef REGIONSTRUCT_H
- #define REGIONSTRUCT_H
-
- #include "region.h"
- #include "miscstruct.h"
- /*
- * clip region
- */
-
- typedef struct _RegData {
- long size;
- long numRects;
- /* BoxRec rects[size]; in memory but not explicitly declared */
- } RegDataRec, *RegDataPtr;
-
- typedef struct _Region {
- BoxRec extents;
- RegDataPtr data;
- } RegionRec;
-
- #define REGION_NIL(reg) ((reg)->data && !(reg)->data->numRects)
- #define REGION_NUM_RECTS(reg) ((reg)->data ? (reg)->data->numRects : 1)
- #define REGION_SIZE(reg) ((reg)->data ? (reg)->data->size : 0)
- #define REGION_RECTS(reg) ((reg)->data ? (BoxPtr)((reg)->data + 1) \
- : &(reg)->extents)
- #define REGION_BOXPTR(reg) ((BoxPtr)((reg)->data + 1))
- #define REGION_BOX(reg,i) (®ION_BOXPTR(reg)[i])
- #define REGION_TOP(reg) REGION_BOX(reg, (reg)->data->numRects)
- #define REGION_END(reg) REGION_BOX(reg, (reg)->data->numRects - 1)
- #define REGION_SZOF(n) (sizeof(RegDataRec) + ((n) * sizeof(BoxRec)))
-
- #endif /* REGIONSTRUCT_H */
-