Rad to turn conversion added to Angle class.

Author: simzer

src/base/geom/angle.cpp

@@ -63,6 +63,10 @@ double Angle::deg() const {
 	return radToDeg(value);
 }
 
+double Angle::turn() const { 
+	return value / (2.0 * M_PI); 
+}
+
 void Angle::sanitize() 
 {
 	auto angleInDeg = deg();

src/base/geom/angle.h

@@ -20,6 +20,7 @@ class Angle
 	static Angle Turn(double value);
 	double deg() const;
 	double rad() const { return value; }
+	double turn() const;
 
 	explicit operator std::string() const;