//**** COLORING ALGORITHM****//
import java.io.*;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.Random;
//
public class calg extends Applet
{
TextField noVer,xCoor,yCoor;
String np,xp,yp;
int inp1;
int globn=0;
String pt1,pt2;
Button b1,b2,b3,b4;
int xptArr[] = new int[20];
int yptArr[] = new int[20];
Random r ;
public void init()
{
//Container c = getContentPane();
Label lb1 = new Label("Noofvertices");
lb1.setBounds(20,100,100,50);
noVer = new TextField();
noVer.setBounds(150,100,70,30);
b1 = new Button("NoVer");
b1.setBounds(300,100,50,40);
// Defines the label, textbox and button for XCoorArray
Label lb2 = new Label("xcoor");
lb2.setBounds(20,150,100,50);
xCoor = new TextField();
xCoor.setBounds(150,150,70,30);
b2 = new Button("xCor");
b2.setBounds(300,150,50,40);
// Defines the label, textbox and button for yCoorArray
Label lb3 = new Label("ycoor");
lb3.setBounds(20,200,100,50);
yCoor = new TextField();
yCoor.setBounds(150,200,70,30);
b3 = new Button("yCor");
b3.setBounds(300,200,50,40);
b4 = new Button("DrawPoly");
b4.setBounds(175,250,70,40);
b4.addActionListener(new drawPolybh());
add(lb1);
add(noVer);
add(b1);
add(lb2);
add(xCoor);
add(b2);
add(lb3);
add(yCoor);
add(b3);
add(b4);
b1.addActionListener(new noverbh());
b2.addActionListener(new xcoorbh());
b3.addActionListener(new ycoorbh());
r= new Random();
repaint();
}
public static void main(String args[])
{
coloralgcorect a4 = new coloralgcorect();
a4.init();
}
class noverbh implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String np1;
np1=e.getActionCommand();
if(np1.equals("NoVer"))
{
globn=1;
np=noVer.getText();
xCoor.setText(np);
repaint();
}
}
};
class xcoorbh implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String np2;
inp1 = Integer.parseInt(np);
np2=e.getActionCommand();
if(np2.equals("xCor"))
{
globn=2;
pt1=xCoor.getText();
yCoor.setText(pt1);
repaint();
}
}
};
class ycoorbh implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String np3;
np3=e.getActionCommand();
if(np3.equals("yCor"))
{
globn=3;
pt2=yCoor.getText();
xCoor.setText(pt2);
repaint();
}
}
}
public void paint(Graphics g)
{
int nop=1;
int o=1,lot=5;
if(globn==1)
{
g.drawString("The no of vertices of the polygon: " + np,100,300);
}
if(globn==2)
{
inp1=Integer.parseInt(np);
int l1=Integer.parseInt(pt1);
for(int i=0; i{
xptArr[i]=r.nextInt(l1);
String str1=Integer.toString(xptArr[i]);
g.drawString(str1,100+i*50,400);
}
}
if(globn==3)
{
inp1=Integer.parseInt(np);
int l1=Integer.parseInt(pt2);
for(int i=0; i{
yptArr[i]=r.nextInt(l1);
String str1=Integer.toString(yptArr[i]);
g.drawString(str1,100+i*50,450);
}
}
if(globn==4)
{
Font f1 = new Font("Arial",Font.BOLD,15);
g.setFont(f1);
g.setColor(new Color(200,0,0));
g.drawString("Welcome to ColoringAlg" ,50,50);
Color cl[] =new Color[10];
cl[0]= new Color(100,0,0);
cl[1]=new Color(0,150,0);
cl[2]=new Color(0,0,200);
cl[3]=new Color(25,25,205);
cl[4]=new Color(100,150,160);
cl[5]=new Color(200,40,60);
cl[6]=new Color(30,130,230);
Random r1 = new Random();
int q=0;
int l=0;
Color prev=new Color(0,0,0),cur= new Color(0,0,0),used[]= new Color[15];
prev=cl[6];
Color first = cl[0];
for(int i=0,j=0; i{
if(inp1<=3)
{
if(i{
cur=cl[i];
g.setColor(cur);
g.fillOval(xptArr[i],yptArr[i],10,10);
g.drawLine(xptArr[i],yptArr[i],xptArr[i+1],yptArr[i+1]);
}
else
{
cur=cl[i];
g.setColor(cur);
g.fillOval(xptArr[i],yptArr[i],10,10);
g.drawLine(xptArr[i],yptArr[i],xptArr[0],yptArr[0]);
}
}
else if(inp1 >3)
{
if(i{
if(i % 2== 0)
{
if(prev !=cl[q])
g.setColor(cl[q]);
else
g.setColor(cl[++q]);
g.fillOval(xptArr[i],yptArr[i],10,10);
g.drawLine(xptArr[i],yptArr[i],xptArr[i+1],yptArr[i+1]);
prev=cl[q];
}
else
{
if(prev != cl[o])
g.setColor(cl[o]);
else
g.setColor(cl[++o]);
g.fillOval(xptArr[i],yptArr[i],10,10);
g.drawLine(xptArr[i],yptArr[i],xptArr[i+1],yptArr[i+1]);
prev=cl[o];
}
}
else
{
if(inp1 %2 ==0)
{
if(prev != cl[q] )
g.setColor(cl[q]);
else
if(prev != cl[o])
g.setColor(cl[o]);
}
else g.setColor(cl[lot]);
g.fillOval(xptArr[i],yptArr[i],10,10);
g.drawLine(xptArr[i],yptArr[i],xptArr[0],yptArr[0]);
}
}
}
}
}
class drawPolybh implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
String np4;
np4=e.getActionCommand();
if(np4.equals("DrawPoly"))
{
globn=4;
repaint();
}
}
}
public void update(Graphics g)
{
paint(g);
}
};
|