@Override
public double computeSquare(AbstractShape shape) {
double square = 0;
if (shape instanceof Triangle) {
Triangle triangle = (Triangle) shape;
square = 1 / 2 * triangle.getA() * triangle.getB() * Math.sin(triangle.getAngle());
} else {
throw new IllegalArgumentException("Incompatible shape: " + shape.getClass());
}
return square;
}
@Override
public double computePerimeter(AbstractShape shape) {
double perimeter = 0;
if (shape instanceof Triangle) {
Triangle triangle = (Triangle) shape;
perimeter = triangle.getA() + triangle.getB() + triangle.getC();
} else {
throw new IllegalArgumentException("Incompatible shape: " + shape.getClass());
}
return perimeter;
}