Class and Object 2
Class dan Object 2 (Menggambar Rumah)
TUGAS PBO-A 2
Komponen kelas yang dibutuhkan :
- Picture (Untuk menampilkan keseluruhan gambar)
- Canvas (Sebagai media untuk menggambar)
- Circle (Bentuk gambar lingkaran)
- Square (Bentuk gambar persegi)
- Triangle (Bentuk gambar segitiga)
Source code untuk masing-masing kelas
1. Picture
public class Picture
{
private Square wall;
private Square wall1;
private Square wall2;
private Square wall3;
private Square wall4;
private Square window;
private Square window1;
private Square window2;
private Square window3;
private Square window4;
private Square door;
private Square door1;
private Square door2;
private Square door3;
private Square door4;
private Triangle roof;
private Triangle roof1;
private Triangle roof2;
private Triangle roof3;
private Triangle roof4;
private Circle sun;
private Circle cloud;
private Circle cloud1;
private Circle cloud2;
private Circle cloud3;
private Circle cloud4;
private Circle cloud5;
private Circle cloud6;
private Circle cloud7;
private Circle tree;
private Square tree1;
private Square tree2;
private Square tree3;
private Square tree4;
private Square tree5;
private Circle tree6;
private Square tree7;
private Square tree8;
private Square tree9;
private Square tree10;
private Square tree11;
/**
* Constructor for objects of class Picture
*/
public Picture()
{
// nothing to do... instance variables are automatically set to null
}
/**
* Draw this picture.
*/
public void draw()
{
wall = new Square();
wall.moveVertical(40);
wall.moveHorizontal(-60);
wall.changeSize(200);
wall.makeVisible();
window = new Square();
window.changeColor("black");
window.moveHorizontal(29);
window.moveVertical(100);
window.makeVisible();
wall1 = new Square();
wall1.changeColor("green");
wall1.moveVertical(110);
wall1.moveHorizontal(140);
wall1.changeSize(100);
wall1.makeVisible();
roof = new Triangle();
roof.changeSize(100, 207);
roof.moveHorizontal(249);
roof.moveVertical(125);
roof.makeVisible();
roof1 = new Triangle();
roof1.changeSize(53, 102);
roof1.moveHorizontal(400);
roof1.moveVertical(242);
roof1.makeVisible();
window1 = new Square();
window1.changeColor("black");
window1.moveHorizontal(170);
window1.moveVertical(140);
window1.changeSize(60);
window1.makeVisible();
tree11 = new Square();
tree11.changeColor("black");
tree11.moveHorizontal(327);
tree11.moveVertical(99);
tree11.changeSize(20);
tree11.makeVisible();
wall2 = new Square();
wall2.changeColor("red");
wall2.moveVertical(110);
wall2.moveHorizontal(240);
wall2.changeSize(100);
wall2.makeVisible();
roof2 = new Triangle();
roof2.changeSize(53, 102);
roof2.moveHorizontal(500);
roof2.moveVertical(242);
roof2.makeVisible();
window2 = new Square();
window2.changeColor("black");
window2.moveHorizontal(270);
window2.moveVertical(140);
window2.changeSize(60);
window2.makeVisible();
wall3 = new Square();
wall3.changeColor("green");
wall3.moveVertical(110);
wall3.moveHorizontal(-160);
wall3.changeSize(100);
wall3.makeVisible();
roof3 = new Triangle();
roof3.changeSize(53, 102);
roof3.moveHorizontal(100);
roof3.moveVertical(242);
roof3.makeVisible();
window3 = new Square();
window3.changeColor("black");
window3.moveHorizontal(-130);
window3.moveVertical(140);
window3.changeSize(60);
window3.makeVisible();
tree4 = new Square();
tree4.changeColor("black");
tree4.moveHorizontal(-267);
tree4.moveVertical(99);
tree4.changeSize(20);
tree4.makeVisible();
wall4 = new Square();
wall4.changeColor("red");
wall4.moveVertical(110);
wall4.moveHorizontal(-260);
wall4.changeSize(100);
wall4.makeVisible();
roof4 = new Triangle();
roof4.changeSize(53, 102);
roof4.moveHorizontal(-1);
roof4.moveVertical(242);
roof4.makeVisible();
window4 = new Square();
window4.changeColor("black");
window4.moveHorizontal(-230);
window4.moveVertical(140);
window4.changeSize(60);
window4.makeVisible();
door = new Square();
door.changeColor("black");
door.moveHorizontal(-28);
door.moveVertical(100);
door.changeSize(45);
door.makeVisible();
door1 = new Square();
door1.changeColor("black");
door1.moveHorizontal(-28);
door1.moveVertical(150);
door1.changeSize(45);
door1.makeVisible();
door2= new Square();
door2.changeColor("black");
door2.moveHorizontal(29);
door2.moveVertical(70);
door2.changeSize(20);
door2.makeVisible();
door3= new Square();
door3.changeColor("black");
door3.moveHorizontal(70);
door3.moveVertical(70);
door3.changeSize(20);
door3.makeVisible();
door4= new Square();
door4.changeColor("black");
door4.moveHorizontal(111);
door4.moveVertical(70);
door4.changeSize(20);
door4.makeVisible();
sun = new Circle();
sun.changeColor("yellow");
sun.moveHorizontal(400);
sun.moveVertical(-5);
sun.changeSize(80);
sun.makeVisible();
cloud = new Circle();
cloud.changeColor("blue");
cloud.moveHorizontal(483);
cloud.moveVertical(-95);
cloud.changeSize(100);
cloud.makeVisible();
cloud1 = new Circle();
cloud1.changeColor("blue");
cloud1.moveHorizontal(430);
cloud1.moveVertical(-90);
cloud1.changeSize(65);
cloud1.makeVisible();
cloud2 = new Circle();
cloud2.changeColor("blue");
cloud2.moveHorizontal(368);
cloud2.moveVertical(-90);
cloud2.changeSize(65);
cloud2.makeVisible();
cloud3 = new Circle();
cloud3.changeColor("blue");
cloud3.moveHorizontal(273);
cloud3.moveVertical(-95);
cloud3.changeSize(100);
cloud3.makeVisible();
cloud4 = new Circle();
cloud4.changeColor("blue");
cloud4.moveHorizontal(190);
cloud4.moveVertical(-95);
cloud4.changeSize(100);
cloud4.makeVisible();
cloud5 = new Circle();
cloud5.changeColor("blue");
cloud5.moveHorizontal(130);
cloud5.moveVertical(-90);
cloud5.changeSize(65);
cloud5.makeVisible();
cloud6 = new Circle();
cloud6.changeColor("blue");
cloud6.moveHorizontal(35);
cloud6.moveVertical(-95);
cloud6.changeSize(100);
cloud6.makeVisible();
cloud7 = new Circle();
cloud7.changeColor("blue");
cloud7.moveHorizontal(-25);
cloud7.moveVertical(-95);
cloud7.changeSize(65);
cloud7.makeVisible();
tree = new Circle();
tree.changeColor("green");
tree.moveHorizontal(-60);
tree.moveVertical(80);
tree.changeSize(80);
tree.makeVisible();
tree1 = new Square();
tree1.changeColor("black");
tree1.moveHorizontal(-267);
tree1.moveVertical(19);
tree1.changeSize(20);
tree1.makeVisible();
tree2 = new Square();
tree2.changeColor("black");
tree2.moveHorizontal(-267);
tree2.moveVertical(39);
tree2.changeSize(20);
tree2.makeVisible();
tree3 = new Square();
tree3.changeColor("black");
tree3.moveHorizontal(-267);
tree3.moveVertical(59);
tree3.changeSize(20);
tree3.makeVisible();
tree4 = new Square();
tree4.changeColor("black");
tree4.moveHorizontal(-267);
tree4.moveVertical(79);
tree4.changeSize(20);
tree4.makeVisible();
tree6 = new Circle();
tree6.changeColor("green");
tree6.moveHorizontal(540);
tree6.moveVertical(80);
tree6.changeSize(80);
tree6.makeVisible();
tree7 = new Square();
tree7.changeColor("black");
tree7.moveHorizontal(327);
tree7.moveVertical(19);
tree7.changeSize(20);
tree7.makeVisible();
tree8 = new Square();
tree8.changeColor("black");
tree8.moveHorizontal(327);
tree8.moveVertical(39);
tree8.changeSize(20);
tree8.makeVisible();
tree9 = new Square();
tree9.changeColor("black");
tree9.moveHorizontal(327);
tree9.moveVertical(59);
tree9.changeSize(20);
tree9.makeVisible();
tree10 = new Square();
tree10.changeColor("black");
tree10.moveHorizontal(327);
tree10.moveVertical(79);
tree10.changeSize(20);
tree10.makeVisible();
}
/**
* Change this picture to black/white display
*/
public void setBlackAndWhite()
{
if(wall != null) // only if it's painted already...
{
wall.changeColor("black");
window.changeColor("white");
roof.changeColor("black");
sun.changeColor("black");
}
}
/**
* Change this picture to use color display
*/
public void setColor()
{
if(wall != null) // only if it's painted already...
{
wall.changeColor("red");
window.changeColor("black");
roof.changeColor("blue");
sun.changeColor("yellow");
}
}
}
2. Canvas
import javax.swing.*;
import java.awt.*;
import java.util.List;
import java.util.*;
public class Canvas
{
// Note: The implementation of this class (specifically the handling of
// shape identity and colors) is slightly more complex than necessary. This
// is done on purpose to keep the interface and instance fields of the
// shape objects in this project clean and simple for educational purposes.
private static Canvas canvasSingleton;
/**
* Factory method to get the canvas singleton object.
*/
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;
/**
* Create a Canvas.
* @param title title to appear in Canvas Frame
* @param width the desired width for the canvas
* @param height the desired height for the canvas
* @param bgClour the desired background colour of the canvas
*/
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>();
}
/**
* Set the canvas visibility and brings canvas to the front of screen
* when made visible. This method can also be used to bring an already
* visible canvas to the front of other windows.
* @param visible boolean value representing the desired visibility of
* the canvas (true or false)
*/
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);
}
/**
* Draw a given shape onto the canvas.
* @param referenceObject an object to define identity for this shape
* @param color the color of the shape
* @param shape the shape object to be drawn on the canvas
*/
// Note: this is a slightly backwards way of maintaining the shape
// objects. It is carefully designed to keep the visible shape interfaces
// in this project clean and simple for educational purposes.
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();
}
/**
* Erase a given shape's from the screen.
* @param referenceObject the shape object to be erased
*/
public void erase(Object referenceObject)
{
objects.remove(referenceObject); // just in case it was already there
shapes.remove(referenceObject);
redraw();
}
/**
* Set the foreground colour of the Canvas.
* @param newColour the new colour for the foreground of the Canvas
*/
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);
}
/**
* Wait for a specified number of milliseconds before finishing.
* This provides an easy way to specify a small delay which can be
* used when producing animations.
* @param milliseconds the number
*/
public void wait(int milliseconds)
{
try
{
Thread.sleep(milliseconds);
}
catch (Exception e)
{
// ignoring exception at the moment
}
}
/**
* Redraw ell shapes currently on the Canvas.
*/
private void redraw()
{
erase();
for(Iterator i=objects.iterator(); i.hasNext(); ) {
((ShapeDescription)shapes.get(i.next())).draw(graphic);
}
canvas.repaint();
}
/**
* Erase the whole canvas. (Does not 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);
}
/************************************************************************
* Inner class CanvasPane - the actual canvas component contained in the
* Canvas frame. This is essentially a JPanel with added capability to
* refresh the image drawn on it.
*/
private class CanvasPane extends JPanel
{
public void paint(Graphics g)
{
g.drawImage(canvasImage, 0, 0, null);
}
}
/************************************************************************
* Inner class CanvasPane - the actual canvas component contained in the
* Canvas frame. This is essentially a JPanel with added capability to
* refresh the image drawn on it.
*/
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);
}
}
}
3. Circle
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;
/**
* Create a new circle at default position with default color.
*/
public Circle()
{
diameter = 30;
xPosition = 20;
yPosition = 60;
color = "blue";
isVisible = false;
}
/**
* Make this circle visible. If it was already visible, do nothing.
*/
public void makeVisible()
{
isVisible = true;
draw();
}
/**
* Make this circle invisible. If it was already invisible, do nothing.
*/
public void makeInvisible()
{
erase();
isVisible = false;
}
/**
* Move the circle a few pixels to the right.
*/
public void moveRight()
{
moveHorizontal(20);
}
/**
* Move the circle a few pixels to the left.
*/
public void moveLeft()
{
moveHorizontal(-20);
}
/**
* Move the circle a few pixels up.
*/
public void moveUp()
{
moveVertical(-20);
}
/**
* Move the circle a few pixels down.
*/
public void moveDown()
{
moveVertical(20);
}
/**
* Move the circle horizontally by 'distance' pixels.
*/
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
/**
* Move the circle vertically by 'distance' pixels.
*/
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
/**
* Slowly move the circle horizontally by 'distance' pixels.
*/
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();
}
}
/**
* Slowly move the circle vertically by 'distance' pixels.
*/
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();
}
}
/**
* Change the size to the new size (in pixels). Size must be >= 0.
*/
public void changeSize(int newDiameter)
{
erase();
diameter = newDiameter;
draw();
}
/**
* Change the color. Valid colors are "red", "yellow", "blue", "green",
* "magenta" and "black".
*/
public void changeColor(String newColor)
{
color = newColor;
draw();
}
/*
* Draw the circle with current specifications on screen.
*/
private void draw()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.draw(this, color, new Ellipse2D.Double(xPosition, yPosition,
diameter, diameter));
canvas.wait(10);
}
}
/*
* Erase the circle on screen.
*/
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
4. Square
import java.awt.*;
public class Square
{
private int size;
private int xPosition;
private int yPosition;
private String color;
private boolean isVisible;
/**
* Create a new square at default position with default color.
*/
public Square()
{
size = 100;
xPosition = 260;
yPosition = 200;
color = "red";
isVisible = false;
}
/**
* Make this square visible. If it was already visible, do nothing.
*/
public void makeVisible()
{
isVisible = true;
draw();
}
/**
* Make this square invisible. If it was already invisible, do nothing.
*/
public void makeInvisible()
{
erase();
isVisible = false;
}
/**
* Move the square a few pixels to the right.
*/
public void moveRight()
{
moveHorizontal(20);
}
/**
* Move the square a few pixels to the left.
*/
public void moveLeft()
{
moveHorizontal(-20);
}
/**
* Move the square a few pixels up.
*/
public void moveUp()
{
moveVertical(-20);
}
/**
* Move the square a few pixels down.
*/
public void moveDown()
{
moveVertical(20);
}
/**
* Move the square horizontally by 'distance' pixels.
*/
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
/**
* Move the square vertically by 'distance' pixels.
*/
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
/**
* Slowly move the square horizontally by 'distance' pixels.
*/
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();
}
}
/**
* Slowly move the square vertically by 'distance' pixels.
*/
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();
}
}
/**
* Change the size to the new size (in pixels). Size must be >= 0.
*/
public void changeSize(int newSize)
{
erase();
size = newSize;
draw();
}
/**
* Change the color. Valid colors are "red", "yellow", "blue", "green",
* "magenta" and "black".
*/
public void changeColor(String newColor)
{
color = newColor;
draw();
}
/*
* Draw the square with current specifications on screen.
*/
private void draw()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.draw(this, color,
new Rectangle(xPosition, yPosition, size, size));
canvas.wait(10);
}
}
/*
* Erase the square on screen.
*/
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
5. Triangle
import java.awt.*;
public class Triangle
{
private int height;
private int width;
private int xPosition;
private int yPosition;
private String color;
private boolean isVisible;
/**
* Create a new triangle at default position with default color.
*/
public Triangle()
{
height = 30;
width = 40;
xPosition = 50;
yPosition = 15;
color = "blue";
isVisible = false;
}
/**
* Make this triangle visible. If it was already visible, do nothing.
*/
public void makeVisible()
{
isVisible = true;
draw();
}
/**
* Make this triangle invisible. If it was already invisible, do nothing.
*/
public void makeInvisible()
{
erase();
isVisible = false;
}
/**
* Move the triangle a few pixels to the right.
*/
public void moveRight()
{
moveHorizontal(20);
}
/**
* Move the triangle a few pixels to the left.
*/
public void moveLeft()
{
moveHorizontal(-20);
}
/**
* Move the triangle a few pixels up.
*/
public void moveUp()
{
moveVertical(-20);
}
/**
* Move the triangle a few pixels down.
*/
public void moveDown()
{
moveVertical(20);
}
/**
* Move the triangle horizontally by 'distance' pixels.
*/
public void moveHorizontal(int distance)
{
erase();
xPosition += distance;
draw();
}
/**
* Move the triangle vertically by 'distance' pixels.
*/
public void moveVertical(int distance)
{
erase();
yPosition += distance;
draw();
}
/**
* Slowly move the triangle horizontally by 'distance' pixels.
*/
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();
}
}
/**
* Slowly move the triangle vertically by 'distance' pixels.
*/
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();
}
}
/**
* Change the size to the new size (in pixels). Size must be >= 0.
*/
public void changeSize(int newHeight, int newWidth)
{
erase();
height = newHeight;
width = newWidth;
draw();
}
/**
* Change the color. Valid colors are "red", "yellow", "blue", "green",
* "magenta" and "black".
*/
public void changeColor(String newColor)
{
color = newColor;
draw();
}
/*
* Draw the triangle with current specifications on screen.
*/
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);
}
}
/*
* Erase the triangle on screen.
*/
private void erase()
{
if(isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
}
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