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C++17 std::variant and shader uniforms are a match made in heaven ; )

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This commit is contained in:
Hartmut Seichter 2019-02-12 22:23:06 +01:00
parent 40b84fb78f
commit f9fbf44391
4 changed files with 35 additions and 19 deletions
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16
src/core/include/pw/core/math.hpp
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@ -29,32 +29,30 @@
namespace pw {
const static double __PW_PI = 3.1415926535897932384626433832795028841971693993751058209;
const static double __RAD2DEG = 180.0 / __PW_PI;
const static double __DEG2RAD = __PW_PI / 180.0;
template <typename T>
inline const T pi() { return static_cast<T>(__PW_PI); }
template <typename T>
inline const T one_over_pi() { return static_cast<T>(1 / __PW_PI); }
template <typename T>
inline T rad_to_deg(const T& angle_in_radian) {
return angle_in_radian * __RAD2DEG;
return angle_in_radian * static_cast<T>(180) * one_over_pi<T>();
}
template <typename T>
inline T deg_to_rad(const T& angle_in_degree) {
return angle_in_degree * __DEG2RAD;
return angle_in_degree * pi<T>() / static_cast<T>(180);
}
template <typename T>
static inline
T repeat(const T& t, const T& length) {
inline T repeat(const T& t, const T& length) {
return std::clamp(t - std::floor(t / length) * length, T(0), length);
}
template <typename T>
static inline
T ping_pong(const T& t,const T& length) {
inline T ping_pong(const T& t,const T& length) {
auto tn = repeat(t, length * T(2));
return length - std::abs(tn - length);
}