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<?php
class Point {
public int $x;
public int $y;
public function __construct(int $x, int $y = 0) {
$this->x = $x;
$this->y = $y;
}
}
class Rectangle {
public Point $left;
public Point $right;
public function __construct(Point $left, Point $right) {
$this->left = $left;
$this->right = $right;
}
public function get_area() {
return abs( $this->left->x - $this->right->x ) * abs( $this->left->y - $this->right->y );
}
}
function get_total_area(Rectangle $first, Rectangle $second) {
$area1 = $first->get_area();
$area2 = $second->get_area();
# calculate the overlapping area
$x_dist = min( $first->right->x, $second->right->x ) - max( $first->left->x, $second->left->x );
$y_dist = min( $first->right->y, $second->right->y ) - max( $first->left->y, $second->left->y );
$area_i = 0;
if (( $x_dist > 0 ) and ( $y_dist > 0 )) {
$area_i = $x_dist * $y_dist;
}
return $area1 + $area2 - $area_i;
}
$first = new Rectangle(new Point(-1, 0), new Point(2, 2) );
$second = new Rectangle(new Point(0, -1), new Point(4, 4) );
get_total_area( $first, $second ) == 22 or throw new Exception("Test 1 failed");
$first = new Rectangle(new Point(-3, -1), new Point(1, 3) );
$second = new Rectangle(new Point(-1, -3), new Point(2, 2) );
get_total_area( $first, $second ) == 25 or throw new Exception("Test 2 failed");
?>
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