gui_drawpolyline.c

来自「uCGUI」· C语言 代码 · 共 44 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : GUI_DrawPolyLine.c
Purpose     : Implementation of GUI_DrawPolyline (part of emWin GSC)
************************************************************************************************************/
#include <stddef.h>           /* needed for definition of NULL */
#include "GUI_Protected.H"

/* Draw Poly line, which does not have to be a closed shape */
static void _DrawPolyLine (const GUI_POINT*pPoints, int NumPoints, int x0, int y0) 
{
  GL_MoveTo(pPoints->x+x0, pPoints->y+y0);
  while (--NumPoints >0) 
  {
    pPoints++;
    GL_DrawLineTo(pPoints->x+x0, pPoints->y+y0);
  }
}

void GUI_DrawPolyLine(const GUI_POINT* pPoints, int NumPoints, int x0, int y0) 
{
  GUI_LOCK();
  #if (GUI_WINSUPPORT)
    WM_ADDORG(x0,y0);
    WM_ITERATE_START(NULL); 
    {
  #endif
  _DrawPolyLine (pPoints, NumPoints, x0, y0);
  #if (GUI_WINSUPPORT)
    } WM_ITERATE_END();
  #endif
  GUI_UNLOCK();
}