*修改文件名

1 files changed, 77 insertions, 0 deletions

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<typename T>
+		inline T min(T a, T b)
+		{
+			return a < b ? a : b;
+		}
+
+		template<typename T>
+		inline T max(T a, T b)
+		{
+			return a > b ? a : b;
+		}
+
+		template<typename T>
+		inline T clamp(T a, T mi, T ma)
+		{
+			return min<T>(max<T>(a, mi), ma);
+		}
+
+		template<typename T>
+		inline bool within(T a, T mi, T ma)
+		{
+			return a >= mi && a <= ma;
+		}
+
+		template<typename T>
+		inline bool without(T a, T mi, T ma)
+		{
+			return a < mi || a > ma;
+		}
+
+		template<typename T>
+		inline T abs(T a)
+		{
+			return a > 0 ? a : -a;
+		}
+
+		template<typename T>
+		inline T lowerBound(T a, T lower)
+		{
+			return a < lower ? lower : a;
+		}
+
+		template<typename T>
+		inline T upperBound(T a, T upper)
+		{
+			return a > upper ? upper : a;
+		}
+    
+		template<typename T>
+		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