1 files changed, 21 insertions, 0 deletions
diff --git a/common/accel_sigmoid.cpp b/common/accel_sigmoid.cpp
new file mode 100644
index 0000000..d3b8ab7
--- /dev/null
+++ b/common/accel_sigmoid.cpp
@@ -0,0 +1,21 @@
+#pragma once
+
+#define _USE_MATH_DEFINES
+#include <math.h>
+
+#include "accel_types.hpp"
+
+namespace rawaccel {
+	inline accel_sigmoid::accel_sigmoid(accel_args args)
+		: accel_implentation(args) {}
+
+	inline double accel_sigmoid::accelerate(double speed) {
+		//f(x) = k/(1+e^(-m(c-x)))
+		return curve_constant_two / (exp(-curve_constant_one * (speed - curve_constant_three)) + 1);
+	}
+
+	inline void accel_sigmoid::verify(accel_args args) {
+		accel_implentation::verify(args);
+		if (args.lim_exp <= 1) error("exponent must be greater than 1");
+	}
+}