1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ui/gfx/geometry/vector2d.h"
6
7#include <cmath>
8
9#include "base/strings/stringprintf.h"
10
11namespace gfx {
12
13bool Vector2d::IsZero() const {
14  return x_ == 0 && y_ == 0;
15}
16
17void Vector2d::Add(const Vector2d& other) {
18  x_ += other.x_;
19  y_ += other.y_;
20}
21
22void Vector2d::Subtract(const Vector2d& other) {
23  x_ -= other.x_;
24  y_ -= other.y_;
25}
26
27int64 Vector2d::LengthSquared() const {
28  return static_cast<int64>(x_) * x_ + static_cast<int64>(y_) * y_;
29}
30
31float Vector2d::Length() const {
32  return static_cast<float>(std::sqrt(static_cast<double>(LengthSquared())));
33}
34
35std::string Vector2d::ToString() const {
36  return base::StringPrintf("[%d %d]", x_, y_);
37}
38
39}  // namespace gfx
40