import java.io.*;
import java.util.*;
import java.lang.Math.*;

public class Swarm
{
    public Swarm()
    {
        int radius = 20;
        int actors = 50;

        try
        {
            // output file
            FileOutputStream file = new FileOutputStream( "swarm.inc" );
    	    BufferedOutputStream buf = new BufferedOutputStream( file );
    	    PrintStream out = new PrintStream( buf );
            
            // initialize positions
            Random R = new Random( 0 );
            vector3D initial[] = new vector3D[actors+3];
            for( int i = 0; i < actors; i++ )
            {
                double x = ( R.nextDouble() - 0.5 ) * ( radius * 2 );
                double y = ( R.nextDouble() - 0.5 ) * ( radius );
                double z = ( R.nextDouble() - 0.5 ) * ( radius * 2 );
         	    initial[i] = new vector3D( x, y, z );
                System.out.println( "initial[" + i + "] = " + initial[i] );            
            }
            
            // duplicate first three points at end    
            initial[actors] = initial[0];
            initial[actors+1] = initial[1];
            initial[actors+2] = initial[2];
            
            // compute each actor's path
            Vector path = new Vector();
            for( int i = 0; i < actors; i++ )
            {
                // use 3 points
                spline3D spline = new spline3D();
                vector3D local[] = new vector3D[4];
                local[0] = initial[i];
                local[1] = initial[i+1];
                local[2] = initial[i+2];
                local[3] = initial[i+3];
                Vector result = spline.generate( local );
                System.out.println( "adding " + result.size() + " steps" );            
                for( Enumeration e = result.elements(); e.hasMoreElements(); )
                    path.addElement( e.nextElement() );
            }
            
            // how many?
            int count = path.size();
            System.out.println( "path is " + count + " steps" );

            // general information
            System.out.println( "WRITING..." );
            out.println( "// GENERATED SWARM FILE" );
            out.println( "" );
            out.println( "#declare actors = " + actors + ";" );
            out.println( "#declare points = " + count + ";" );
            out.println( "" );

            out.println( "#declare position = array[" + count + "][3]" );
            out.println( "{" );

            for( Enumeration e = path.elements(); e.hasMoreElements(); )
            {
                vector3D point = (vector3D) e.nextElement();
                out.println( "  { " + point.x + ", \t" + point.y + ", \t" + point.z + " }," );
            }                    

            out.println( "}" );
            out.flush();
            out.close();
            
            System.out.println( "...DONE" );
        }
        catch( Exception ex )
        {
            System.out.println( ex.getMessage() );
            ex.printStackTrace();
        }
    }
    
    public static void main( String[] args )
    {
        Swarm f = new Swarm();
    }
}