public static void main(String[] args) {
Triangle t = new Triangle(new Point(1, 2), new Point(3, 4), new Point(1, 3));
t.printPoints();
System.out.printf("Umfang: %f\nFläche %f\nBewege um (2|4) ...\n", t.perimeter(), t.area());
t.move(2, 4);
t.printPoints();
}
@Override
// first, I create object of Triangle, the identical one to our object Triangle2 with the left
// angle point in (0,0)
// after it, I move it on with move method of Triangle
public void move(double dx, double dy) {
Triangle triangle =
new Triangle(
new Point(0, 0), new Point(0, base), new Point(height / Math.tan((angle)), height));
triangle.move(dx, dy);
System.out.println("Our triangle's left base angle was in (0,0). Now it's moved");
}
private static boolean testTriangle() {
boolean pass = true;
int test = 1;
Triangle tri;
Point a = new Point(4, 0);
Point b = new Point(-2, -1);
Point c = new Point(1, 4);
System.out.println("Triangle tests...");
tri = new Triangle(a, b, c, Color.cyan, false);
pass &= test(approx(tri.getArea(), 13.5, 0.000001), test++);
pass &= test(tri.getColor().equals(Color.cyan), test++);
tri.setColor(Color.black);
pass &= test(tri.getColor().equals(Color.black), test++);
pass &= test(!tri.getFilled(), test++);
tri.setFilled(true);
pass &= test(tri.getFilled(), test++);
pass &= test(tri.getVertexA().equals(new Point(4, 0)), test++);
pass &= test(tri.getVertexB().equals(new Point(-2, -1)), test++);
pass &= test(tri.getVertexC().equals(new Point(1, 4)), test++);
a = new Point(7, -3);
tri.setVertexA(a);
pass &= test(tri.getVertexA().equals(new Point(7, -3)), test++);
b = new Point(13, 56);
tri.setVertexB(b);
pass &= test(tri.getVertexB().equals(new Point(13, 56)), test++);
c = new Point(-3, 23);
tri.setVertexC(c);
pass &= test(tri.getVertexC().equals(new Point(-3, 23)), test++);
pass &= test(approx(tri.getArea(), 373.0, 0.000001), test++);
tri.move(new Point(-5, -7));
pass &= test(tri.getVertexA().equals(new Point(2, -10)), test++);
pass &= test(tri.getVertexB().equals(new Point(8, 49)), test++);
pass &= test(tri.getVertexC().equals(new Point(-8, 16)), test++);
a = new Point(2, -10);
b = new Point(8, 49);
c = new Point(-8, 16);
Triangle tri2 = new Triangle(a, b, c, Color.black, true);
pass &= test(tri.equals(tri2), test++);
Triangle tri3 = new Triangle(new Point(3, -9), b, c, Color.black, false);
pass &= test(!tri2.equals(tri3), test++);
tri3 = new Triangle(a, new Point(7, 48), c, Color.black, false);
pass &= test(!tri2.equals(tri3), test++);
tri3 = new Triangle(a, b, new Point(-7, 17), Color.black, false);
pass &= test(!tri2.equals(tri3), test++);
tri3 = new Triangle(a, b, c, Color.red, false);
pass &= test(!tri2.equals(tri3), test++);
pass &= test(!tri2.equals(null), test++);
pass &= test(!tri2.equals(new String("Whatever")), test++);
return pass;
}
