blob: f48459da2d31ea78b8e07d3bf7a1dad19f589cc6 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cobalt/math/vector2d.h"
#include <cmath>
#include "base/stringprintf.h"
namespace cobalt {
namespace math {
bool Vector2d::IsZero() const { return x_ == 0 && y_ == 0; }
void Vector2d::Add(const Vector2d& other) {
x_ += other.x_;
y_ += other.y_;
}
void Vector2d::Subtract(const Vector2d& other) {
x_ -= other.x_;
y_ -= other.y_;
}
int64 Vector2d::LengthSquared() const {
return static_cast<int64>(x_) * x_ + static_cast<int64>(y_) * y_;
}
float Vector2d::Length() const {
return static_cast<float>(std::sqrt(static_cast<double>(LengthSquared())));
}
std::string Vector2d::ToString() const {
return base::StringPrintf("[%d %d]", x_, y_);
}
} // namespace math
} // namespace cobalt