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gdc_pie_samp.c

/* GDCHART 0.94b  PIE CHART SAMPLE  12 Nov 1998 */

/* creates a file "pie.gif".  Can be stdout for CGI use. */
/*  vi: :set tabstop=4 */

#include <includes.h>
#include "math.h"
#include "gdc.h"
#include "gdcpie.h"

main( int argc, char *argv[] )
{
      /* labels */
      char        *lbl[] = { "CPQ\n(DEC)",
                                       "HP",
                                       "SCO",
                                       "IBM",
                                       "SGI",
                                       "SUN\nSPARC",
                                       "other" }; 
      /* values to chart */
      float        p[] = { 12.5,
                                     20.1,
                                     2.0,
                                     22.0,
                                     5.0,
                                     18.0,
                                     13.0 };

      FILE        *fp = fopen( "pie.gif", "wb" );

      /* set which slices to explode, and by how much */
      int                     expl[] = { 0, 0, 0, 0, 0, 20, 0 };

      /* set missing slices */
      unsigned char     missing[] = { FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE };

      /* colors */
      unsigned long     clr[] = { 0xFF4040L, 0x80FF80L, 0x8080FFL, 0xFF80FFL, 0xFFFF80L, 0x80FFFFL, 0x0080FFL };

      /* set options  */
      /* a lot of options are set here for illustration */
      /* none need be - see gdcpie.h for defaults */
      GDCPIE_title = "Sample\nPIE";
      GDCPIE_label_line = TRUE;
      GDCPIE_label_dist = 15;                   /* dist. labels to slice edge */
                                                            /* can be negative */
      GDCPIE_LineColor = 0x000000L;
      GDCPIE_label_size = GDC_SMALL;
/*    GDCPIE_3d_depth  = 25;  */
/*    GDCPIE_3d_angle  = 45;                       0 - 359 */
      GDCPIE_explode   = expl;                  /* default: NULL - no explosion */
      GDCPIE_Color     = clr;
      GDCPIE_BGColor   = 0xFFFFFFL;
      GDCPIE_EdgeColor = 0x000000L;       /* default is GDCPIE_NOCOLOR */
                                                            /* for no edging */
      GDCPIE_missing   = missing;               /* default: NULL - none missing */

                                                            /* add percentage to slice label */
                                                            /* below the slice label */
      GDCPIE_percent_labels = GDCPIE_PCT_RIGHT;

      /* call the lib */
      pie_gif( 480,                 /* width */
                   360,             /* height */
                   fp,              /* open file pointer */
                   GDC_3DPIE,       /* or GDC_2DPIE */
                   7,                     /* number of slices */
                   lbl,             /* slice labels (unlike out_gif(), can be NULL */
                   p );             /* data array */

      fclose( fp );
      exit( 0 );
}

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