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 11 namespace gfx { 12 13 bool Vector2d::IsZero() const { 14 return x_ == 0 && y_ == 0; 15 } 16 17 void Vector2d::Add(const Vector2d& other) { 18 x_ += other.x_; 19 y_ += other.y_; 20 } 21 22 void Vector2d::Subtract(const Vector2d& other) { 23 x_ -= other.x_; 24 y_ -= other.y_; 25 } 26 27 int64 Vector2d::LengthSquared() const { 28 return static_cast<int64>(x_) * x_ + static_cast<int64>(y_) * y_; 29 } 30 31 float Vector2d::Length() const { 32 return static_cast<float>(std::sqrt(static_cast<double>(LengthSquared()))); 33 } 34 35 std::string Vector2d::ToString() const { 36 return base::StringPrintf("[%d %d]", x_, y_); 37 } 38 39 } // namespace gfx 40
