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- /*--------------------------
- VF13.C -- Clipped Spokes
- --------------------------*/
-
- #define INCL_GPI
- #include <os2.h>
- #include <math.h>
- #include "vectfont.h"
-
- VOID Display_Spokes (HPS hps, LONG cxClient, LONG cyClient)
- {
- static CHAR szText[] = "WOW" ;
- static LONG cbText = sizeof szText - 1 ;
- static LONG lColors[] = { CLR_BLUE, CLR_GREEN, CLR_CYAN,
- CLR_RED, CLR_PINK, CLR_YELLOW,
- CLR_WHITE } ;
- double dMaxRadius ;
- INT i, iNumColors = sizeof lColors / sizeof lColors[0] ;
- POINTL ptl ;
-
- CreateVectorFont (hps, LCID_MYFONT, "Tms Rmn") ;
- GpiSetCharSet (hps, LCID_MYFONT) ;
- ScaleFontToBox (hps, cbText, szText, cxClient, cyClient) ;
- QueryStartPointInTextBox (hps, cbText, szText, &ptl) ;
-
- ColorClient (hps, cxClient, cyClient, CLR_BLACK) ;
-
- GpiBeginPath (hps, ID_PATH) ;
- GpiCharStringAt (hps, &ptl, cbText, szText) ; // Text string
- GpiEndPath (hps) ;
-
- GpiSetClipPath (hps, ID_PATH, SCP_AND | SCP_ALTERNATE) ;
-
- dMaxRadius = sqrt (pow (cxClient / 2.0, 2.0) +
- pow (cyClient / 2.0, 2.0)) ;
- // Draw spokes
- for (i = 0 ; i < 360 ; i++)
- {
- GpiSetColor (hps, lColors[i % iNumColors]) ;
-
- ptl.x = cxClient / 2 ;
- ptl.y = cyClient / 2 ;
- GpiMove (hps, &ptl) ;
-
- ptl.x += (LONG) (dMaxRadius * cos (i * 6.28 / 360)) ;
- ptl.y += (LONG) (dMaxRadius * sin (i * 6.28 / 360)) ;
- GpiLine (hps, &ptl) ;
- }
- GpiSetCharSet (hps, LCID_DEFAULT) ; // Clean up
- GpiDeleteSetId (hps, LCID_MYFONT) ;
- }
-