GUI_RectsIntersect.c
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上传日期:2017-08-10
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- /*********************************************************************
- * SEGGER MICROCONTROLLER SYSTEME GmbH *
- * Solutions for real time microcontroller applications *
- **********************************************************************
- * *
- * (c) 2002 SEGGER Microcontroller Systeme GmbH *
- * *
- * Internet: www.segger.com Support: support@segger.com *
- * *
- **********************************************************************
- **** emWin/GSC Grafical user interface for embedded applications ****
- emWin is protected by international copyright laws. Knowledge of the
- source code may not be used to write a similar product. This file may
- only be used in accordance with a license and should not be re-
- distributed in any way. We appreciate your understanding and fairness.
- ----------------------------------------------------------------------
- File : GUI_RectsIntersect.C
- Purpose : Implementation of GUI_RectsIntersect
- ---------------------------END-OF-HEADER------------------------------
- */
- #include <stddef.h> /* needed for definition of NULL */
- #include "GUI_Protected.H"
- /*******************************************************************
- *
- * Macros
- *
- ********************************************************************
- Check if rectangle do intersect.
- Returns:
- 0 if they do not.
- 1 if they do.
- */
- int GUI_RectsIntersect(const GUI_RECT* pr0, const GUI_RECT* pr1) {
- if (pr0->y0 <= pr1->y1) {
- if (pr1->y0 <= pr0->y1) {
- if (pr0->x0 <= pr1->x1) {
- if (pr1->x0 <= pr0->x1) {
- return 1;
- }
- }
- }
- }
- return 0;
- }