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Add 3-argument step, smoothstep and smootherstep
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This commit is contained in:
Nikita Lisitsa 2026-09-03 12:14:54 +03:00
parent 2db6c32310
commit c1c04fd139
1 changed files with 18 additions and 0 deletions
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18
libs/math/include/psemek/math/math.hpp
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@ -224,12 +224,24 @@ namespace psemek::math
return false; return false;
} }
template <typename T, typename H>
H step(T edge0, T edge1, H x)
{
return clamp((x - edge0) / (edge1 - edge0), H{0}, H{1});
}
template <typename T> template <typename T>
T smoothstep(T x) T smoothstep(T x)
{ {
return x * x * (T{3} - T{2} * x); return x * x * (T{3} - T{2} * x);
} }
template <typename T, typename H>
H smoothstep(T edge0, T edge1, H x)
{
return smoothstep(clamp((x - edge0) / (edge1 - edge0), H{0}, H{1}));
}
template <typename T> template <typename T>
T smootherstep(T x) T smootherstep(T x)
{ {
@ -237,6 +249,12 @@ namespace psemek::math
return x * x2 * (T{10} - x * T{15} + x2 * T{6}); return x * x2 * (T{10} - x * T{15} + x2 * T{6});
} }
template <typename T, typename H>
H smootherstep(T edge0, T edge1, H x)
{
return smootherstep(clamp((x - edge0) / (edge1 - edge0), H{0}, H{1}));
}
template <typename T> template <typename T>
T inverse_smoothstep(T x) T inverse_smoothstep(T x)
{ {