example3.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"

int main(int argc, char *argv[])
{
   srand48((long)time(NULL));			/* Alway seed your RNG! */

   s2opend("/?",argc, argv);			/* Open the display */
   s2swin(-1.,1., -1.,1., -1.,1.);		/* Set the window coordinates */

/* Draw the coordinate box: character strings give formatting options */
   s2box("BCDETMNOPQ", 0,0, "BCDETMNOPQ", 0,0, "BDECTMNOPQ", 0,0);	

   s2lab("X-axis","Y-axis","Z-axis","Plot");	/* Write some labels */

   int i;					/* Declare an integer variable */
   int N = 1000;				/* How many points to plot? */
   XYZ xyz;					/* A vector position */
   COLOUR col;					/* An RGB colour */

   float radius = 0.1;				/* Radius of a sphere */
   ss2ssr(10);					/* Set the resolution of the sphere */
   
   for (i=0;i<N;i++) {				
      xyz.x = drand48()*2.0 - 1.0;		/* Random coordinate in [-1..1] */
      xyz.y = drand48()*2.0 - 1.0;		   
      xyz.z = drand48()*2.0 - 1.0;

      col.r = drand48();			/* Random colour map in [0..1] */
      col.g = drand48();
      col.b = drand48();

      ns2vsphere(xyz, radius, col);		/* Draw a sphere using using the colour */
   }

   s2show(1);					/* Open the s2plot window */
   
   return 1;
}