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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 "cobalt/math/vector3d_f.h" #include #include "base/strings/stringprintf.h" namespace cobalt { namespace math { Vector3dF::Vector3dF() : x_(0), y_(0), z_(0) {} Vector3dF::Vector3dF(float x, float y, float z) : x_(x), y_(y), z_(z) {} Vector3dF::Vector3dF(const Vector2dF& other) : x_(other.x()), y_(other.y()), z_(0) {} std::string Vector3dF::ToString() const { return base::StringPrintf("[%f %f %f]", x_, y_, z_); } bool Vector3dF::IsZero() const { return x_ == 0 && y_ == 0 && z_ == 0; } void Vector3dF::Add(const Vector3dF& other) { x_ += other.x_; y_ += other.y_; z_ += other.z_; } void Vector3dF::Subtract(const Vector3dF& other) { x_ -= other.x_; y_ -= other.y_; z_ -= other.z_; } double Vector3dF::LengthSquared() const { return static_cast(x_) * x_ + static_cast(y_) * y_ + static_cast(z_) * z_; } float Vector3dF::Length() const { return static_cast(std::sqrt(LengthSquared())); } void Vector3dF::Scale(float x_scale, float y_scale, float z_scale) { x_ *= x_scale; y_ *= y_scale; z_ *= z_scale; } void Vector3dF::Cross(const Vector3dF& other) { float x = y_ * other.z() - z_ * other.y(); float y = z_ * other.x() - x_ * other.z(); float z = x_ * other.y() - y_ * other.x(); x_ = x; y_ = y; z_ = z; } float DotProduct(const Vector3dF& lhs, const Vector3dF& rhs) { return lhs.x() * rhs.x() + lhs.y() * rhs.y() + lhs.z() * rhs.z(); } Vector3dF ScaleVector3d(const Vector3dF& v, float x_scale, float y_scale, float z_scale) { Vector3dF scaled_v(v); scaled_v.Scale(x_scale, y_scale, z_scale); return scaled_v; } } // namespace math } // namespace cobalt