Tugas 3 PBO B
Menggambar Pemandang Dengan BlueJ
1. Canvas
2. Picture
3. Circle
4. Square
5. Triangel
Hasil dari code :
1. Canvas
import javax.swing.*;
import java.awt.*;
import java.util.List;
import java.util.*;
public class Canvas
{
private static Canvas canvasSingleton;
public static Canvas getCanvas()
{
if(canvasSingleton == null) {
canvasSingleton = new Canvas("BlueJ Shapes Demo", 600, 400,
Color.white);
}
canvasSingleton.setVisible(true);
return canvasSingleton;
}
// ----- instance part -----
private JFrame frame;
private CanvasPane canvas;
private Graphics2D graphic;
private Color backgroundColour;
private Image canvasImage;
private List<Object> objects;
private HashMap<Object, ShapeDescription> shapes;
private Canvas(String title, int width, int height, Color bgColour)
{
frame = new JFrame();
canvas = new CanvasPane();
frame.setContentPane(canvas);
frame.setTitle(title);
canvas.setPreferredSize(new Dimension(width, height));
backgroundColour = bgColour;
frame.pack();
objects = new ArrayList<Object>();
shapes = new HashMap<Object, ShapeDescription>();
}
public void setVisible(boolean visible)
{
if(graphic == null) {
// first time: instantiate the offscreen image and fill it with
// the background colour
Dimension size = canvas.getSize();
canvasImage = canvas.createImage(size.width, size.height);
graphic = (Graphics2D)canvasImage.getGraphics();
graphic.setColor(backgroundColour);
graphic.fillRect(0, 0, size.width, size.height);
graphic.setColor(Color.black);
}
frame.setVisible(visible);
}
public void draw(Object referenceObject, String color, Shape shape)
{
objects.remove(referenceObject); // just in case it was already there
objects.add(referenceObject); // add at the end
shapes.put(referenceObject, new ShapeDescription(shape, color));
redraw();
}
public void erase(Object referenceObject)
{
objects.remove(referenceObject); // just in case it was already there
shapes.remove(referenceObject);
redraw();
}
public void setForegroundColor(String colorString)
{
if(colorString.equals("red"))
graphic.setColor(Color.red);
else if(colorString.equals("black"))
graphic.setColor(Color.black);
else if(colorString.equals("blue"))
graphic.setColor(Color.blue);
else if(colorString.equals("yellow"))
graphic.setColor(Color.yellow);
else if(colorString.equals("green"))
graphic.setColor(Color.green);
else if(colorString.equals("magenta"))
graphic.setColor(Color.magenta);
else if(colorString.equals("white"))
graphic.setColor(Color.white);
else
graphic.setColor(Color.black);
}
public void wait(int milliseconds)
{
try
{
Thread.sleep(milliseconds);
}
catch (Exception e)
{
// ignoring exception at the moment
}
}
private void redraw()
{
erase();
for(Iterator i=objects.iterator(); i.hasNext(); ) {
((ShapeDescription)shapes.get(i.next())).draw(graphic);
}
canvas.repaint();
}
private void erase()
{
Color original = graphic.getColor();
graphic.setColor(backgroundColour);
Dimension size = canvas.getSize();
graphic.fill(new Rectangle(0, 0, size.width, size.height));
graphic.setColor(original);
}
private class CanvasPane extends JPanel
{
public void paint(Graphics g)
{
g.drawImage(canvasImage, 0, 0, null);
}
}
private class ShapeDescription
{
private Shape shape;
private String colorString;
public ShapeDescription(Shape shape, String color)
{
this.shape = shape;
colorString = color;
}
public void draw(Graphics2D graphic)
{
setForegroundColor(colorString);
graphic.fill(shape);
}
}
}
2. Picture
/**
* Write a description of class Picture here.
*
* @author (your name)
*/
public class Picture
{
private Square TopBackground;
private Square BotBackground;
private Square homebase;
private Triangle leftMount;
private Triangle rightMount;
private Triangle rood;
private Triangle atap;
private Circle sun;
private Circle Cloud;
private Circle Cloud1;
private Circle Cloud2;
private Circle Cloud3;
public Picture()
{
TopBackground = new Square();
TopBackground.changeColor("blue donker");
TopBackground.moveHorizontal(-267);
TopBackground.moveVertical(-200);
TopBackground.changeSize(1000);
TopBackground.makeVisible();
BotBackground = new Square();
BotBackground.changeColor("blue");
BotBackground.moveHorizontal(-267);
BotBackground.moveVertical(-200);
BotBackground.changeSize(1000);
leftMount = new Triangle();
leftMount.changeSize(150, 400);
leftMount.moveHorizontal(150);
leftMount.moveVertical(40);
leftMount.changeColor("green");
leftMount.makeVisible();
rightMount = new Triangle();
rightMount.changeSize(150,400);
rightMount.moveHorizontal(380);
rightMount.moveVertical(40);
rightMount.changeColor("green");
rightMount.makeVisible();
sun = new Circle();
sun.changeColor("yellow");
sun.moveHorizontal(210);
sun.moveVertical(-40);
sun.changeSize(80);
sun.makeVisible();
Cloud = new Circle();
Cloud.changeColor("red");
Cloud.moveHorizontal(250);
Cloud.moveVertical(-40);
Cloud.changeSize(40);
Cloud.makeVisible();
Cloud1 = new Circle();
Cloud1.changeColor("red");
Cloud1.moveHorizontal(270);
Cloud1.moveVertical(-25);
Cloud1.changeSize(40);
Cloud1.makeVisible();
rood = new Triangle();
rood.changeSize(195,100);
rood.moveHorizontal(275);
rood.moveVertical(190);
rood.changeColor("blue");
rood.makeVisible();
homebase = new Square();
homebase.changeSize(50);
homebase.moveHorizontal(150);
homebase.moveVertical(40);
homebase.changeColor("red");
homebase.makeVisible();
atap = new Triangle();
atap.changeSize(50, 50);
atap.moveHorizontal(395);
atap.moveVertical(175);
atap.changeColor("blue");
atap.makeVisible();
}
public void draw()
{
}
}
3. Circle
/**
* Write a description of class Circle here.
*
* @author (your name)
*/
import java.awt.*;
import java.awt.geom.*;
public class Circle
{
private int diameter;
private int xPosition;
private int yPosition;
private String color;
private boolean isVisible;
public Circle()
{
diameter = 30;
xPosition = 20;
yPosition = 60;
color = "yellow";
isVisible = false;
}
public void makeVisible()
{
isVisible = true;
draw();
}
public void makeInvisible()
{
erase();
isVisible = false;
}
public void moveRight()
{
moveHorizontal(20);
}
public void moveLeft()
{
moveHorizontal(-20);
}
public void moveUp()
{
moveVertical(-20);
}
public void moveDown()
{
moveVertical(20);
}
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
public void slowMoveHorizontal(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
xPosition += delta;
draw();
}
}
public void slowMoveVertical(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
yPosition += delta;
draw();
}
}
public void changeSize(int newDiameter)
{
erase();
diameter = newDiameter;
draw();
}
public void changeColor(String newColor)
{
color = newColor;
draw();
}
private void draw()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.draw(this, color, new Ellipse2D.Double(xPosition, yPosition,
diameter, diameter));
canvas.wait(10);
}
}
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
4. Square
/**
* Write a description of class Square here.
*
* @author (your name)
*/
import java.awt.*;
public class Square
{
private int size;
private int xPosition;
private int yPosition;
private String color;
private boolean isVisible;
public Square()
{
size = 100;
xPosition = 260;
yPosition = 200;
color = "blue";
isVisible = false;
}
public void makeVisible()
{
isVisible = true;
draw();
}
public void makeInvisible()
{
erase();
isVisible = false;
}
public void moveRight()
{
moveHorizontal(20);
}
public void moveLeft()
{
moveHorizontal(-20);
}
public void moveUp()
{
moveVertical(-20);
}
public void moveDown()
{
moveVertical(20);
}
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
public void slowMoveHorizontal(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
xPosition += delta;
draw();
}
}
public void slowMoveVertical(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
yPosition += delta;
draw();
}
}
public void changeSize(int newSize)
{
erase();
size = newSize;
draw();
}
public void changeColor(String newColor)
{
color = newColor;
draw();
}
private void draw()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.draw(this, color,
new Rectangle(xPosition, yPosition, size, size));
canvas.wait(10);
}
}
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
5. Triangel
/**
* Write a description of class Triangle here.
*
* @author (your name)
*/
import java.awt.*;
public class Triangle
{
private int height;
private int width;
private int xPosition;
private int yPosition;
private String color;
private boolean isVisible;
public Triangle()
{
height = 30;
width = 30;
xPosition = 40;
yPosition = 15;
color = "green";
isVisible = false;
}
public void makeVisible()
{
isVisible = true;
draw();
}
public void makeInvisible()
{
erase();
isVisible = false;
}
public void moveRight()
{
moveHorizontal(40);
}
public void moveLeft()
{
moveHorizontal(-20);
}
public void moveUp()
{
moveVertical(-20);
}
public void moveDown()
{
moveVertical(20);
}
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
public void slowMoveHorizontal(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
xPosition += delta;
draw();
}
}
public void slowMoveVertical(int distance)
{
int delta;
if(distance < 0)
{
delta = -1;
distance = -distance;
}
else
{
delta = 1;
}
for(int i = 0; i < distance; i++)
{
yPosition += delta;
draw();
}
}
public void changeSize(int newHeight, int newWidth)
{
erase();
height = newHeight;
width = newWidth;
draw();
}
public void changeColor(String newColor)
{
color = newColor;
draw();
}
private void draw()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
int[] xpoints = { xPosition, xPosition + (width/2), xPosition - (width/2) };
int[] ypoints = { yPosition, yPosition + height, yPosition + height };
canvas.draw(this, color, new Polygon(xpoints, ypoints, 3));
canvas.wait(10);
}
}
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
Hasil dari code :
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