import java.awt.*; import java.awt.event.MouseAdaptor; import java.awt.event.MouseEvent; import javax.swing.*; public class Prob1_4 extends JPanel { private static final long serialVersionUID = 1L; private final int WIDTH = 1200; private final int HEIGHT = 800; int maxX ,maxY ; static JFrame f; float pixelWidth , pixelHeight; rWidth = 10.0F; rHeight = 7.5F; xP = -1, yP; FontMetrics metrics; public Prob1_4() { setPreferredSize(new Dimension(WIDTH, HEIGHT)); addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent evt) { xP = evt.getX(); yP = evt.getY(); f.repaint(); } } ); } void initgr() { Dimension d = getSize(); maxX = d.width - 1; maxY = d.height - 1; pixelWidth = rWidth/maxX; pixelHeight = rHeight/maxY; } int iX(float x){return Math.round(x/pixelWidth);} int iY(float y){return maxY - Math.round(y/pixelHeight);} float fx(int x){return x * pixelWidth;} float fy(int y){return (maxY - y) * pixelHeight;} public void paint(Graphics g) { initgr(); Graphics2D g2d = (Graphics2D) g; Point origin = new Point(WIDTH / 2, HEIGHT / 2); metrics = g.getFontMetrics(); double value1 = Math.pow(xP-origin.x,2); double value2 =Math.pow(yP- origin.y,2); int radius = (int)Math.sqrt(value1+value2); g.drawString( \"Click anywhere on screen to generate hexagons of apprpriate radius! \" , 40, 100); double size = (radius/253.0)*7.0; double rad = (radius/253.0)*30.0; drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0); } //Method to draw regular hexagon private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) { Graphics2D g2d = (Graphics2D) g; hexagon hex = new hexagon(x, y, r); hex.draw(g2d, x, y, 0, 0x008844, false); hex.draw(g2d, x, y, 4, 000000, false); } public static void main(String[] args) { f = new JFrame(); Prob1_4 p = new Prob1_4(); f.setContentPane(p); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } } int iX(float x){return Math.round(x/pixelWidth);} int iY(float y){return maxY - Math.round(y/pixelHeight);} float fx(int x){return x * pixelWidth;} float fy(int y){return (maxY - y) * pixelHeight;} public void paint(Graphics g) { initgr(); Graphics2D g2d = (Graphics2D) g; Point origin = new Point(WIDTH / 2, HEIGHT / 2); metrics = g.getFontMetrics(); double value1 = Math.pow(xP-origin.x,2); double value2 =Math.pow(yP- origin.y,2); int radius = (int)Math.sqrt(value1+value2); g.drawString( \"Click anywhere on screen to generate hexagons of apprpriate radius! \" , 40, 100); double size = (radius/253.0)*7.0; double rad = (radius/253.0)*30.0; drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0); } //Method to draw regular hexagon private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) { Graphics2D g2d = (Graphics2D) g; hexagon hex = new hexagon(x, y, r); hex.draw(g2d, x, y, 0, 0x008844, false); hex.draw(g2d, x, y, 4, 000000, false); } public static void main(String[] args) { f = new JFrame(); Prob1_4 p = new Prob1_4(); f.setContentPane(p); f.

1. import java.awt.*;
import java.awt.event.MouseAdaptor;
import java.awt.event.MouseEvent;
import javax.swing.*;
public class Prob1_4 extends JPanel
{
private static final long serialVersionUID = 1L;
private final int WIDTH = 1200;
private final int HEIGHT = 800;
int maxX ,maxY ;
static JFrame f;
float pixelWidth , pixelHeight;
rWidth = 10.0F;
rHeight = 7.5F;
xP = -1, yP;
FontMetrics metrics;
public Prob1_4() {
setPreferredSize(new Dimension(WIDTH, HEIGHT));
addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent evt)
{
xP = evt.getX(); yP = evt.getY();
f.repaint();
}
} );
}
void initgr()
{ Dimension d = getSize();
maxX = d.width - 1; maxY = d.height - 1;
pixelWidth = rWidth/maxX; pixelHeight = rHeight/maxY;
}
int iX(float x){return Math.round(x/pixelWidth);}
int iY(float y){return maxY - Math.round(y/pixelHeight);}
float fx(int x){return x * pixelWidth;}

2. float fy(int y){return (maxY - y) * pixelHeight;}
public void paint(Graphics g)
{
initgr();
Graphics2D g2d = (Graphics2D) g;
Point origin = new Point(WIDTH / 2, HEIGHT / 2);
metrics = g.getFontMetrics();
double value1 = Math.pow(xP-origin.x,2);
double value2 =Math.pow(yP- origin.y,2);
int radius = (int)Math.sqrt(value1+value2);
g.drawString(
"Click anywhere on screen to generate hexagons of apprpriate radius! "
, 40, 100);
double size = (radius/253.0)*7.0;
double rad = (radius/253.0)*30.0;
drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0);
}
//Method to draw regular hexagon
private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) {
Graphics2D g2d = (Graphics2D) g;
hexagon hex = new hexagon(x, y, r);
hex.draw(g2d, x, y, 0, 0x008844, false);
hex.draw(g2d, x, y, 4, 000000, false);
}
public static void main(String[] args) {
f = new JFrame();
Prob1_4 p = new Prob1_4();
f.setContentPane(p);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
int iX(float x){return Math.round(x/pixelWidth);}
int iY(float y){return maxY - Math.round(y/pixelHeight);}

3. float fx(int x){return x * pixelWidth;}
float fy(int y){return (maxY - y) * pixelHeight;}
public void paint(Graphics g)
{
initgr();
Graphics2D g2d = (Graphics2D) g;
Point origin = new Point(WIDTH / 2, HEIGHT / 2);
metrics = g.getFontMetrics();
double value1 = Math.pow(xP-origin.x,2);
double value2 =Math.pow(yP- origin.y,2);
int radius = (int)Math.sqrt(value1+value2);
g.drawString(
"Click anywhere on screen to generate hexagons of apprpriate radius! "
, 40, 100);
double size = (radius/253.0)*7.0;
double rad = (radius/253.0)*30.0;
drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0);
}
//Method to draw regular hexagon
private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) {
Graphics2D g2d = (Graphics2D) g;
hexagon hex = new hexagon(x, y, r);
hex.draw(g2d, x, y, 0, 0x008844, false);
hex.draw(g2d, x, y, 4, 000000, false);
}
public static void main(String[] args) {
f = new JFrame();
Prob1_4 p = new Prob1_4();
f.setContentPane(p);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}

4. Solution
import java.awt.*;
import java.awt.event.MouseAdaptor;
import java.awt.event.MouseEvent;
import javax.swing.*;
public class Prob1_4 extends JPanel
{
private static final long serialVersionUID = 1L;
private final int WIDTH = 1200;
private final int HEIGHT = 800;
int maxX ,maxY ;
static JFrame f;
float pixelWidth , pixelHeight;
rWidth = 10.0F;
rHeight = 7.5F;
xP = -1, yP;
FontMetrics metrics;
public Prob1_4() {
setPreferredSize(new Dimension(WIDTH, HEIGHT));
addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent evt)
{
xP = evt.getX(); yP = evt.getY();
f.repaint();
}
} );
}
void initgr()
{ Dimension d = getSize();
maxX = d.width - 1; maxY = d.height - 1;
pixelWidth = rWidth/maxX; pixelHeight = rHeight/maxY;
}
int iX(float x){return Math.round(x/pixelWidth);}
int iY(float y){return maxY - Math.round(y/pixelHeight);}

5. float fx(int x){return x * pixelWidth;}
float fy(int y){return (maxY - y) * pixelHeight;}
public void paint(Graphics g)
{
initgr();
Graphics2D g2d = (Graphics2D) g;
Point origin = new Point(WIDTH / 2, HEIGHT / 2);
metrics = g.getFontMetrics();
double value1 = Math.pow(xP-origin.x,2);
double value2 =Math.pow(yP- origin.y,2);
int radius = (int)Math.sqrt(value1+value2);
g.drawString(
"Click anywhere on screen to generate hexagons of apprpriate radius! "
, 40, 100);
double size = (radius/253.0)*7.0;
double rad = (radius/253.0)*30.0;
drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0);
}
//Method to draw regular hexagon
private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) {
Graphics2D g2d = (Graphics2D) g;
hexagon hex = new hexagon(x, y, r);
hex.draw(g2d, x, y, 0, 0x008844, false);
hex.draw(g2d, x, y, 4, 000000, false);
}
public static void main(String[] args) {
f = new JFrame();
Prob1_4 p = new Prob1_4();
f.setContentPane(p);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
int iX(float x){return Math.round(x/pixelWidth);}

6. int iY(float y){return maxY - Math.round(y/pixelHeight);}
float fx(int x){return x * pixelWidth;}
float fy(int y){return (maxY - y) * pixelHeight;}
public void paint(Graphics g)
{
initgr();
Graphics2D g2d = (Graphics2D) g;
Point origin = new Point(WIDTH / 2, HEIGHT / 2);
metrics = g.getFontMetrics();
double value1 = Math.pow(xP-origin.x,2);
double value2 =Math.pow(yP- origin.y,2);
int radius = (int)Math.sqrt(value1+value2);
g.drawString(
"Click anywhere on screen to generate hexagons of apprpriate radius! "
, 40, 100);
double size = (radius/253.0)*7.0;
double rad = (radius/253.0)*30.0;
drawHexGridLoop(g2d, origin, (int)size-2, (int)rad+5, 0);
}
//Method to draw regular hexagon
private void drawHex(Graphics g, int posX, int posY, int x, int y, int r) {
Graphics2D g2d = (Graphics2D) g;
hexagon hex = new hexagon(x, y, r);
hex.draw(g2d, x, y, 0, 0x008844, false);
hex.draw(g2d, x, y, 4, 000000, false);
}
public static void main(String[] args) {
f = new JFrame();
Prob1_4 p = new Prob1_4();
f.setContentPane(p);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}