import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import static java.lang.Math.*;

/**
 *ATTRATTORE  DI LORENZ  con formula modificata  3D  e stereo    applet realizzato  nel      09/2011    

 * 
 * @author   Sergio Savoldelli   wwww.savoldelli.net
 * @version  numero 3
 */

public class blorenzgraf3 extends java.applet.Applet

implements MouseListener, MouseMotionListener  {

    public double z = 0.02;
    public double pi=3.14159265;
    public double yz = 0.002;
    public double pi2=pi*2;

    public  int  mov1,mov2,mov3,mov4,k=44,n1=10,n2=250,qq,q,modulo,i,step,a2, N= 28000,temp=0;
    public double x1,y1, z1,x0,z0,y0,xe,ye,ze,xeb,yeb,zeb;
    public double aa,k0,k02,xe2,ye2,xe2c,ye2c,x,y,xx,yy,t2, ee,r0,r02,val,w1,ipasso,incpasso,w2;

    public  double h = 0.001, q3=0;
    public   double a = 6;
    public   double b = 24;
    public   double c = 4;

    public String nome =" gatto"; 

    Font font;
    Panel controlPanel, optionPanelColor, optionPanel0;

    Scrollbar sliderR, sliderr, sliderO;
    private boolean movingCircleOut = false;

    String sliderTextR = "       A  (2 - 36): ";
    String sliderTextr = "       B (gatto - farfalla)";
    String sliderTextO = "       C (6 - 44): ";
    String sliderTextC = "          -      Stereo    -   ";

    Label sliderLabelR, sliderLabelr, sliderLabelO,  sliderLabelC,  titleLabel,titolotra;
    Checkbox insideCheckbox, outsideCheckbox;
    public double vertx[], verty[], vertz[];
    public int  vertxb[],vertyb[],vertzb[],vertzc[],vertbzb[],vertbzc[],verx[],very[],colore[];

    public void init() {
        setSize(780, 550); 
        vertx = new double[28500];  verty = new double[28500]; vertz = new double[28500];
        vertxb = new int[28500];vertyb = new int[28500];vertzb = new int[28500];vertzc = new int[28500];vertbzb = new int[28500];
        vertbzc = new int[28500]; 

        setBackground(Color.black);
        setLayout(new BorderLayout());

        q=0;

        controlPanel = new Panel();
        controlPanel.setLayout(new GridLayout(13,1));
        add("East", controlPanel);
        addMouseListener(this);
        addMouseMotionListener(this);

        titleLabel = new Label("A. di Lorenz modificato ", 1); 
        font = new Font("Helvetica", Font.BOLD, 12);
        titleLabel.setFont(font);
        titleLabel.setBackground(Color.black);
        titleLabel.setForeground(Color.red);
        ////////////
        titolotra = new Label("CLICK AND DRAG       ", 2); 
        font = new Font("Helvetica", Font.BOLD, 12);
        titolotra.setFont(font);
        titolotra.setBackground(Color.black);
        titolotra.setForeground(Color.green);

        controlPanel.add(titleLabel);
        controlPanel.add(titolotra);

        sliderLabelR = new Label(sliderTextR + Integer.toString(n2));
        font = new Font("Helvetica", Font.PLAIN, 12);
        sliderLabelR.setFont(font);
        sliderLabelR.setBackground(Color.black);
        sliderLabelR.setForeground(Color.white);
        controlPanel.add(sliderLabelR);
        sliderR = new Scrollbar(Scrollbar.HORIZONTAL, n2, 0, 2,37);
        controlPanel.add(sliderR);

        sliderLabelr = new Label(sliderTextr + Integer.toString(n1));
        font = new Font("Helvetica", Font.PLAIN, 12);
        sliderLabelr.setFont(font);
        sliderLabelr.setBackground(Color.black);
        sliderLabelr.setForeground(Color.white);
        controlPanel.add(sliderLabelr);
        sliderr = new Scrollbar(Scrollbar.HORIZONTAL, n1, 0, 1,3);
        controlPanel.add(sliderr);

        sliderLabelO = new Label(sliderTextO + Integer.toString(k));
        font = new Font("Helvetica", Font.PLAIN, 12);
        sliderLabelO.setFont(font);
        sliderLabelO.setBackground(Color.black);
        sliderLabelO.setForeground(Color.white);
        controlPanel.add(sliderLabelO);
        sliderO = new Scrollbar(Scrollbar.HORIZONTAL, k, 1, 6, 45);
        controlPanel.add(sliderO);

        controlPanel.add(new Label(" "));

        sliderLabelC = new Label(sliderTextC);

        CheckboxGroup CircleInOutGroup = new CheckboxGroup ();

        insideCheckbox = new Checkbox("si",  CircleInOutGroup, !movingCircleOut);
        outsideCheckbox = new Checkbox("no", CircleInOutGroup, movingCircleOut);
        insideCheckbox.setForeground(Color.green);
        outsideCheckbox.setForeground(Color.cyan);
        font = new Font("Helvetica", Font.BOLD, 12);
        insideCheckbox.setFont(font);
        outsideCheckbox.setFont(font);

        optionPanel0 = new Panel();
        optionPanel0.setLayout(new GridLayout(1, 3));
        font = new Font("Helvetica", Font.BOLD, 12);
        sliderLabelC.setFont(font);
        sliderLabelC.setBackground(Color.red);
        sliderLabelC.setForeground(Color.white);

        optionPanel0.add(insideCheckbox);

        optionPanel0.add(outsideCheckbox);

        controlPanel.add(new Label(" "));

        controlPanel.add(sliderLabelC,10);

        controlPanel.add("East", optionPanel0);

    }

    public boolean handleEvent(Event evt)

    {

        if (evt.target instanceof Scrollbar) {

            int value = ((Scrollbar)evt.target).getValue();
            if (evt.target == sliderR) {

                sliderLabelR.setText(sliderTextR + Integer.toString(value));
                n2 = value;

            } else if (evt.target == sliderr) {
                sliderLabelr.setText(sliderTextr + (nome));

                n1 = value;

                if (n1 <2) nome =" gatto";
                if (n1 >1) nome =" farfalla";

            } else if (evt.target == sliderO) {
                sliderLabelO.setText(sliderTextO + Integer.toString(value));
                k = value;

            } 

            repaint();

        }

        if (   evt.target == insideCheckbox || evt.target == outsideCheckbox) {
            repaint();

        }

        return true;
    }

    public void paint(Graphics g) {

        g.setColor (new Color(0,0,0));
        g.fillRect(0,0,610,550);

        w1= 0.000543; 
        h=0.001+ w1*k;

        x0 = 0.05;
        y0 =0.05;
        z0 =0.1;

        c=4-3/k;
        a= 11-6/n2;
        b=29-5/k;

        if (n1 > 1 )n2= 1;
        step= 10;

        N=20000;

        for (i=0;i<N;i=i+1) {

            w2 = pi2/500;
            x1 = (x0 + h * a * (y0 - x0))*(1+w2/k);
            y1 = y1 + h * (x0 * (b - z0) - y0)*(1+w2/k);
            z1 = (z0 + h * (x0 * y0 - c * z0))*(1+w2/k);

            x0 = x1;
            y0 = y1;
            z0 = z1;

            vertx[i]= x1;
            verty[i]=y1;
            vertz[i]=z1;
        }  

        x1 = 0.0;
        y1 = 0.0;
        z1 = 0.0;
        qq=0;

        N=20000;
        ipasso= 0;
        incpasso= 0;

        for(a2=0;a2<=N;a2=a2+step){ 
            ipasso= 0.75- Math.sin(a2)*0.6;
            incpasso= 0.0- Math.cos(a2)*0.9;

            if (n1 < 2){ipasso = 1;incpasso =1; } ;

            x0=vertx[a2];
            y0=verty[a2];
            z0= vertz[a2];

            xeb= (x0)*(Math.cos(z+0.1))*(5*incpasso);
            xe= x0*( Math.cos(z))*(5*incpasso);

            yeb= y0*Math.sin(z+0.1)*(5*ipasso);
            ye= y0* Math.sin(z)*(5*ipasso);

            zeb=z0*  -(Math.cos(yz+0.02))*(5*incpasso);
            ze=z0*  -(Math.cos(yz))*(5*incpasso);

            k0=((xe)+329)+ye;
            r0= (ze)+300;

            k02=(xeb+319)+yeb;
            r02= (zeb)+290;

            if (outsideCheckbox.getState()){
                k02=-100;
                r02=-100;

            }

            g.setColor(new Color(255,0,0));
            g.drawOval((int)k0, (int)r0,1,2);

            g.setColor(new Color(0,255,0));//verde
            g.drawOval((int)k02, (int)r02,1,2);

        }

        try{

            Thread.sleep(temp);
        }
        catch(InterruptedException e){

        }

    } 

    public void mouseClicked(MouseEvent e) { 

    } 

    public void mousePressed(MouseEvent e) {

        mov2 = e.getX();  int mov3 = e.getY();

        if (e.isMetaDown()) {
            temp= 1;
            repaint();
        }

        if (e.isAltDown()) {
            temp =110;
            repaint();}

    }

    public void mouseReleased(MouseEvent e){}

    public void mouseEntered(MouseEvent e) {}

    public void mouseExited(MouseEvent e)  {}

    public void mouseMoved(MouseEvent e) {}

    public void mouseDragged(MouseEvent e) {

        mov1 = e.getX();   mov4 = e.getY();

        z=z+0.015*((mov1-mov2));mov2=mov1;
        yz=yz +0.01* ((mov4-mov3));mov3=mov4;

        repaint();
        e.consume();
    }

}