gui_rectsintersect.c

来自「uCGUI」· C语言 代码 · 共 37 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : GUI_RectsIntersect.C
Purpose     : Implementation of GUI_RectsIntersect
************************************************************************************************************/
#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;
}