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Merge pull request #1079 from BramblePie/Change_orientedAngle_function
Change orientedAngle function #1079
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@ -20,14 +20,15 @@ namespace glm
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return acos(clamp(dot(x, y), T(-1), T(1)));
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}
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//! \todo epsilon is hard coded to 0.01
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template<typename T, qualifier Q>
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GLM_FUNC_QUALIFIER T orientedAngle(vec<2, T, Q> const& x, vec<2, T, Q> const& y)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559, "'orientedAngle' only accept floating-point inputs");
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T const Angle(acos(clamp(dot(x, y), T(-1), T(1))));
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if(all(epsilonEqual(y, glm::rotate(x, Angle), T(0.0001))))
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T const partialCross = x.x * y.y - y.x * x.y;
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if (partialCross > T(0))
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return Angle;
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else
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return -Angle;
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