utils.ixx File

Misc math utility functions. More...

Included Headers

#include <cmath> #include <numbers> #include <type_traits>

Namespaces Index

namespace	helios
namespace	math

Description

Misc math utility functions.

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The file content with the documentation metadata removed is:

1

5module;

6

7#include <cmath>

8#include <numbers>

9#include <type_traits>

10

11export module helios.math.utils;

12

13export namespace helios::math {

14

24 constexpr float EPSILON_LENGTH = 1e-6f;

25

32 constexpr float radians(const float angle) noexcept {

33 return angle * static_cast<float>(std::numbers::pi)/180.0f;

34 }

35

42 constexpr float degrees(const float radians) noexcept {

43 return radians * 180.0f/static_cast<float>(std::numbers::pi);

44 }

45

57 constexpr float shortestAngle(const float from, const float to) noexcept {

58

59 const float x = to - from;

60

61 // consteval required for MSVC since constexpr

62 // for std::floor only works on Mac

63 if consteval {

64 const float y = (x + 180.0f) / 360.0f;

65 const auto yi = static_cast<long long>(y);

66 const float floored = static_cast<float>(y >= 0.0f ? yi : yi - 1);

67 return x - 360.0f * floored;

68 }

69

70 return x - 360.0f * std::floor((x + 180.0f) / 360.0f);

71 }

72

73

74}

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