Repo created

libs/geometry/bounding_box.hpp

@@ -0,0 +1,56 @@
+#pragma once
+
+#include "geometry/point2d.hpp"
+#include "geometry/rect2d.hpp"
+
+#include "base/visitor.hpp"
+
+#include <limits>
+#include <vector>
+
+namespace m2
+{
+class BoundingBox
+{
+public:
+  BoundingBox() = default;
+  BoundingBox(std::vector<PointD> const & points);
+
+  void Add(PointD const & p) { return Add(p.x, p.y); }
+  void Add(double x, double y);
+
+  bool HasPoint(PointD const & p) const { return HasPoint(p.x, p.y); }
+  bool HasPoint(double x, double y) const;
+
+  bool HasPoint(PointD const & p, double eps) const { return HasPoint(p.x, p.y, eps); }
+  bool HasPoint(double x, double y, double eps) const;
+
+  PointD Min() const { return m_min; }
+  PointD Max() const { return m_max; }
+
+  m2::RectD ToRect() const { return {Min(), Max()}; }
+
+  std::vector<m2::PointD> Points() const
+  {
+    std::vector<m2::PointD> points(4);
+    points[0] = Min();
+    points[2] = Max();
+    points[1] = PointD(points[2].x, points[0].y);
+    points[3] = PointD(points[0].x, points[2].y);
+    return points;
+  }
+
+  bool operator==(BoundingBox const & rhs) const { return m_min == rhs.m_min && m_max == rhs.m_max; }
+
+  DECLARE_VISITOR(visitor(m_min, "min"), visitor(m_max, "max"))
+  DECLARE_DEBUG_PRINT(BoundingBox)
+
+private:
+  // Infinity can not be used with -ffast-math
+  static double constexpr kLargestDouble = std::numeric_limits<double>::max();
+  static double constexpr kLowestDouble = std::numeric_limits<double>::lowest();
+
+  m2::PointD m_min = m2::PointD(kLargestDouble, kLargestDouble);
+  m2::PointD m_max = m2::PointD(kLowestDouble, kLowestDouble);
+};
+}  // namespace m2