chromium/ui/gfx/geometry/quad_f.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_GFX_GEOMETRY_QUAD_F_H_
#define UI_GFX_GEOMETRY_QUAD_F_H_

#include <stddef.h>

#include <algorithm>
#include <cmath>
#include <iosfwd>
#include <string>

#include "base/check_op.h"
#include "ui/gfx/geometry/geometry_export.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/rect_f.h"

namespace gfx {

// A Quad is defined by four corners, allowing it to have edges that are not
// axis-aligned, unlike a Rect.
class GEOMETRY_EXPORT QuadF { … };

inline bool operator==(const QuadF& lhs, const QuadF& rhs) { … }

inline bool operator!=(const QuadF& lhs, const QuadF& rhs) { … }

// Add a vector to a quad, offseting each point in the quad by the vector.
GEOMETRY_EXPORT QuadF operator+(const QuadF& lhs, const Vector2dF& rhs);
// Subtract a vector from a quad, offseting each point in the quad by the
// inverse of the vector.
GEOMETRY_EXPORT QuadF operator-(const QuadF& lhs, const Vector2dF& rhs);

// This is declared here for use in gtest-based unit tests but is defined in
// the //ui/gfx:test_support target. Depend on that to use this in your unit
// test. This should not be used in production code - call ToString() instead.
void PrintTo(const QuadF& quad, ::std::ostream* os);

}  // namespace gfx

#endif  // UI_GFX_GEOMETRY_QUAD_F_H_