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maths: allow mix's t to lie outside [0,1] a little

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Danny Robson 2018-03-14 18:13:05 +11:00
parent c9dea18881
commit deb787847c
1 changed files with 3 additions and 2 deletions
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5
maths.hpp
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@ -688,8 +688,9 @@ namespace util {
std::enable_if_t<std::is_floating_point<T>::value, U> std::enable_if_t<std::is_floating_point<T>::value, U>
mix (U a, U b, T t) mix (U a, U b, T t)
{ {
assert (t >= 0); // give some tolerance for floating point rounding
assert (t <= 1); assert (t >= -0.00001f);
assert (t <= 1.00001f);
return a * (1 - t) + b * t; return a * (1 - t) + b * t;
} }