From 7d5f055547e70fa93ee9ac944e62f8d657b9dc55 Mon Sep 17 00:00:00 2001 From: chai Date: Fri, 19 Oct 2018 08:36:44 +0800 Subject: =?UTF-8?q?*=E4=BF=AE=E6=94=B9=E6=96=87=E4=BB=B6=E5=90=8D?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/libjin/Math/je_math.h | 77 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 src/libjin/Math/je_math.h (limited to 'src/libjin/Math/je_math.h') diff --git a/src/libjin/Math/je_math.h b/src/libjin/Math/je_math.h new file mode 100644 index 0000000..b6a2ffd --- /dev/null +++ b/src/libjin/Math/je_math.h @@ -0,0 +1,77 @@ +#ifndef __LIBJIN_UTILS_MATH_H +#define __LIBJIN_UTILS_MATH_H + +#include "je_constant.h" +#include "je_matrix.h" +#include "je_quad.h" + +namespace jin +{ + namespace math + { + + #ifdef min + # undef min + #endif // min + #ifdef max + # undef max + #endif // max + + template + inline T min(T a, T b) + { + return a < b ? a : b; + } + + template + inline T max(T a, T b) + { + return a > b ? a : b; + } + + template + inline T clamp(T a, T mi, T ma) + { + return min(max(a, mi), ma); + } + + template + inline bool within(T a, T mi, T ma) + { + return a >= mi && a <= ma; + } + + template + inline bool without(T a, T mi, T ma) + { + return a < mi || a > ma; + } + + template + inline T abs(T a) + { + return a > 0 ? a : -a; + } + + template + inline T lowerBound(T a, T lower) + { + return a < lower ? lower : a; + } + + template + inline T upperBound(T a, T upper) + { + return a > upper ? upper : a; + } + + template + inline T lerp(T a, T b, float t) + { + return a + t * (b - a); + } + + } // namespace math +} // namespace jin + +#endif \ No newline at end of file -- cgit v1.1-26-g67d0