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common: Make use of [[nodiscard]] where applicable

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Now that clang-format makes [[nodiscard]] attributes format sensibly, we
can apply them to several functions within the common library to allow
the compiler to complain about any misuses of the functions.
This commit is contained in:
Lioncash 2020-08-14 09:38:45 -04:00
parent 2b601e8636
commit df72480395
34 changed files with 343 additions and 358 deletions
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15
src/common/quaternion.h
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@ -14,35 +14,36 @@ public:
Vec3<T> xyz;
T w{};
Quaternion<decltype(-T{})> Inverse() const {
[[nodiscard]] Quaternion<decltype(-T{})> Inverse() const {
return {-xyz, w};
}
Quaternion<decltype(T{} + T{})> operator+(const Quaternion& other) const {
[[nodiscard]] Quaternion<decltype(T{} + T{})> operator+(const Quaternion& other) const {
return {xyz + other.xyz, w + other.w};
}
Quaternion<decltype(T{} - T{})> operator-(const Quaternion& other) const {
[[nodiscard]] Quaternion<decltype(T{} - T{})> operator-(const Quaternion& other) const {
return {xyz - other.xyz, w - other.w};
}
Quaternion<decltype(T{} * T{} - T{} * T{})> operator*(const Quaternion& other) const {
[[nodiscard]] Quaternion<decltype(T{} * T{} - T{} * T{})> operator*(
const Quaternion& other) const {
return {xyz * other.w + other.xyz * w + Cross(xyz, other.xyz),
w * other.w - Dot(xyz, other.xyz)};
}
Quaternion<T> Normalized() const {
[[nodiscard]] Quaternion<T> Normalized() const {
T length = std::sqrt(xyz.Length2() + w * w);
return {xyz / length, w / length};
}
};
template <typename T>
auto QuaternionRotate(const Quaternion<T>& q, const Vec3<T>& v) {
[[nodiscard]] auto QuaternionRotate(const Quaternion<T>& q, const Vec3<T>& v) {
return v + 2 * Cross(q.xyz, Cross(q.xyz, v) + v * q.w);
}
inline Quaternion<float> MakeQuaternion(const Vec3<float>& axis, float angle) {
[[nodiscard]] inline Quaternion<float> MakeQuaternion(const Vec3<float>& axis, float angle) {
return {axis * std::sin(angle / 2), std::cos(angle / 2)};
}