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- // 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 "ui/gfx/geometry/vector2d.h"
- #include <cmath>
- #include "base/numerics/clamped_math.h"
- #include "base/strings/stringprintf.h"
- namespace gfx {
- bool Vector2d::IsZero() const {
- return x_ == 0 && y_ == 0;
- }
- void Vector2d::Add(const Vector2d& other) {
- x_ = base::ClampAdd(other.x_, x_);
- y_ = base::ClampAdd(other.y_, y_);
- }
- void Vector2d::Subtract(const Vector2d& other) {
- x_ = base::ClampSub(x_, other.x_);
- y_ = base::ClampSub(y_, other.y_);
- }
- Vector2d operator-(const Vector2d& v) {
- return Vector2d(-base::MakeClampedNum(v.x()), -base::MakeClampedNum(v.y()));
- }
- int64_t Vector2d::LengthSquared() const {
- return static_cast<int64_t>(x_) * x_ + static_cast<int64_t>(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 gfx
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