gdc_pie_samp.c

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/* 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 <stdio.h>
#include <values.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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