109 lines
2.1 KiB
Java
109 lines
2.1 KiB
Java
class MonPoint {
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public MonPoint(double vx, double vy) {
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this.x = vx;
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this.y = vy;
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}
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public double getX() {
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return this.x;
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}
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public double getY() {
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return this.y;
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}
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public void setX(double vx) {
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this.x = vx;
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}
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public void setY(double vy) {
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this.y = vy;
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}
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public void afficher() {
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System.out.print("(" + this.x + ", " + this.y + ")");
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}
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public double distance(MonPoint autre) {
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return Math.sqrt(Math.pow(autre.x - this.x, 2)
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+ Math.pow(autre.y - this.y, 2));
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}
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public void translater(double dx, double dy) {
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this.x += dx;
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this.y += dy;
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}
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private double x;
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private double y;
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}
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public class ExempleComprendreTutor {
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public static void afficher(String texte, MonPoint p) {
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System.out.print(texte + " = ");
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p.afficher();
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System.out.println();
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}
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public static void main(String[] args) {
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MonPoint p1;
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p1 = new MonPoint(3, 4);
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afficher("p1", p1);
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MonPoint p2 = new MonPoint(0, 0);
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afficher("p2", p2);
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double d = p1.distance(p2);
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System.out.println("Distance de p1 à p2 : " + d);
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System.out.println("> p1.translater(6, -2);");
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p1.translater(6, -2);
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afficher("p1", p1); // Qu'est ce qui est affiché ?
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System.out.println("> p1.setX(0);");
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p1.setX(0);
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afficher("p1", p1); // Qu'est ce qui est affiché ?
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System.out.println("> p1.setY(10);");
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p1.setY(10);
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afficher("p1", p1);
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System.out.println("> MonPoint p3 = p1;");
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MonPoint p3 = p1;
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afficher("p3", p3);
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afficher("p1", p1);
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System.out.println("> p3.translater(100, 100);");
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p3.translater(100, 100);
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afficher("p3", p3);
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afficher("p1", p1);
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System.out.println("> p3 = new MonPoint(123, 321);");
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p3 = new MonPoint(123, 321);
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afficher("p3", p3);
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afficher("p1", p1);
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System.out.println("> p1 = p2 = p3;");
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p1 = p2 = p3;
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afficher("p1", p1);
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afficher("p2", p2);
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afficher("p3", p3);
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System.out.println("> p1.translater(-123, -321);");
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p1.translater(-123, -321);
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afficher("p1", p1);
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afficher("p2", p2);
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afficher("p3", p3);
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d = new MonPoint(5, 5).distance(new MonPoint(8, 1));
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System.out.println("d = " + d);
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}
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}
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