1 /*
 2 仪表盘
 3 */
 4 void DrawArcScale(void)
 5 {
 6     int x0 = 160;
 7     int y0 = 180;
 8     int i;
 9     char ac[4];
10     GUI_SetBkColor(GUI_WHITE);
11     GUI_Clear();
12     GUI_SetPenSize( 5 );
13     GUI_SetTextMode(GUI_TM_TRANS);
14     GUI_SetFont(&GUI_FontComic18B_ASCII);
15     GUI_SetColor( GUI_BLACK );
16     GUI_DrawArc( x0,y0,150, 150,-30, 210 );
17     //GUI_Delay(1000);
18     for (i=0; i<= 23; i++)
19     {
20         float a = (-30+i*10)*3.1415926/180;
21         int x = -141*cos(a)+x0;
22         int y = -141*sin(a)+y0;
23         if (i%2 == 0)
24         GUI_SetPenSize( 5 );
25         else
26         GUI_SetPenSize( 4 );
27         GUI_DrawPoint(x,y);
28         if (i%2 == 0)
29         {
30             x = -123*cos(a)+x0;
31             y = -130*sin(a)+y0;
32             sprintf(ac, "%d", 10*i);
33             GUI_SetTextAlign(GUI_TA_VCENTER);
34             GUI_DispStringHCenterAt(ac,x,y);
35         }
36     }
37 }