TP

DEV2.1/TP12/03_Homothetie/EcritureFichier.java

@@ -0,0 +1,47 @@
+import java.awt.*;
+import java.io.*;
+
+public class EcritureFichier {
+
+	private int[] coordX;
+	private int[] coordY;
+	private int nbPoints;
+	private boolean aMultiplier;
+
+	public EcritureFichier(int[] coordX, int[] coordY, int nbPoints, boolean aMultiplier) {
+		this.coordX = coordX;
+		this.coordY = coordY;
+		this.nbPoints = nbPoints;
+		this.aMultiplier = aMultiplier;
+
+		try {
+			FileOutputStream fichier = new FileOutputStream("polygone.bin");
+			DataOutputStream flux = new DataOutputStream(fichier);
+
+			try{
+				for (int i = 0; i != nbPoints; i++) {
+					if (this.aMultiplier) {
+						flux.writeInt(this.coordX[i]*2);
+						flux.writeInt(this.coordY[i]*2);
+					}
+					else {
+						flux.writeInt(this.coordX[i]/2);
+						flux.writeInt(this.coordY[i]/2);
+					}
+				}
+			} catch (IOException e2) {
+				System.out.println("Erreur d'écriture");
+			}
+
+			try {
+				flux.close();
+				System.out.println("Fin de l'écriture");
+			} catch (IOException e3) {
+				System.out.println("Erreur de fermeture");
+			}
+		
+		} catch (IOException e) {
+			System.out.println("Erreur d'ouverture");
+		}
+	}
+}

DEV2.1/TP12/03_Homothetie/Fenetre.java

@@ -0,0 +1,15 @@
+import java.awt.*;
+import javax.swing.*;
+
+public class Fenetre extends JFrame {
+
+	public Fenetre(boolean aMultiplier) {
+		this.setSize(500, 600);
+		this.setLocation(100, 100);
+		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		this.setLayout(new GridLayout(1, 1));
+		LectureFichier lecture = new LectureFichier();
+		this.add(new Polygone(lecture.getCoordX(), lecture.getCoordY(), lecture.getNbPoints()));
+		EcritureFichier ecriture = new EcritureFichier(lecture.getCoordX(), lecture.getCoordY(), lecture.getNbPoints(), aMultiplier);
+	}
+}

DEV2.1/TP12/03_Homothetie/LectureFichier.java

@@ -0,0 +1,54 @@
+import java.awt.*;
+import java.io.*;
+
+public class LectureFichier {
+
+	private int[] coordX;
+	private int[] coordY;
+	private int nbPoints;
+
+	public LectureFichier() {
+
+		try {
+			FileInputStream fichier = new FileInputStream("polygone.bin");
+			DataInputStream flux = new DataInputStream(fichier);
+
+			this.coordX = new int[flux.available()/8];
+			this.coordY = new int[flux.available()/8];
+			this.nbPoints = flux.available()/8;
+
+			int compteur = 0;
+
+			try {
+				while (flux.available() > 0) {
+					this.coordX[compteur] = flux.readInt(); 
+					this.coordY[compteur] = flux.readInt();
+					compteur++;
+				} 
+			} catch (IOException e2) {
+				System.out.println("Erreur de lecture");
+			}
+
+			try {
+				flux.close();
+			} catch (IOException e3) {
+				System.out.println("Erreur de fermeture");
+			}
+
+		} catch (IOException e) {
+			System.out.println("Erreur d'ouverture");
+		} 
+	}
+
+	public int[] getCoordX() {
+		return this.coordX;
+	}
+
+	public int[] getCoordY() {
+		return this.coordY;
+	}
+
+	public int getNbPoints() {
+		return this.nbPoints;
+	}
+} 

DEV2.1/TP12/03_Homothetie/Main.java

@@ -0,0 +1,14 @@
+public class Main {
+	public static void main(String[] args) {
+		Fenetre fenetre;
+		try {
+			if (args[0].equals("diviser")) {
+				fenetre = new Fenetre(false);
+			} 
+			else {
+				fenetre = new Fenetre(true);
+			}
+		} catch (ArrayIndexOutOfBoundsException e) {
+		}
+	}
+}

DEV2.1/TP12/03_Homothetie/Polygone.java

@@ -0,0 +1,28 @@
+import java.awt.*;
+import javax.swing.*;
+
+public class Polygone extends JComponent {
+
+	private int[] coordX;
+	private int[] coordY;
+	private int nbPoints;
+
+	public Polygone(int[] coordX, int[] coordY, int nbPoints) {
+		this.coordX = coordX;
+		this.coordY = coordY;
+		this.nbPoints = nbPoints;
+	}
+
+	@Override 
+	public void paintComponent(Graphics pinceau) {
+		Graphics secondPinceau = pinceau.create();
+
+		if (this.isOpaque()) {
+			secondPinceau.setColor(this.getBackground());
+			secondPinceau.fillRect(0, 0, this.getWidth(), this.getHeight());
+		}
+
+		secondPinceau.setColor(Color.BLUE);
+		secondPinceau.fillPolygon(this.coordX, this.coordY, this.nbPoints);
+	}
+}