+ return Rect(-infinity, -infinity, infinity, infinity);
+}
+
+Rect
+Rect::horizontal_strip(const value_type &y1, const value_type &y2)
+{
+ const double infinity(HUGE_VAL);
+ return Rect(-infinity, y1, infinity, y2);
+}
+
+Rect
+Rect::vertical_strip(const value_type &x1, const value_type &x2)
+{
+ int i, j;
+ const double infinity(HUGE_VAL);
+ return Rect(x1, -infinity, x2, infinity);