X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=ETL%2Ftrunk%2FETL%2F_angle.h;h=c15f90d813e97601ec0a2ba71fd011571f4d8cfd;hb=0ec96dc9bd274f5c79f37d95ca0abcc24099217a;hp=1abf9303b9d392e66ef3ce914164119eb8c32503;hpb=4dd6c6c11c69d048bd14cddf9c4336017dcd6ea7;p=synfig.git

diff --git a/ETL/trunk/ETL/_angle.h b/ETL/trunk/ETL/_angle.h
index 1abf930..c15f90d 100644
--- a/ETL/trunk/ETL/_angle.h
+++ b/ETL/trunk/ETL/_angle.h
@@ -5,6 +5,7 @@
 ** $Id$
 **
 ** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+** Copyright (c) 2007 Chris Moore
 **
 ** This package is free software; you can redistribute it and/or
 ** modify it under the terms of the GNU General Public License as
@@ -40,6 +41,8 @@
 # define HALF_PI (PI/2)
 #endif
 
+#define ANGLE_EPSILON (1.0e-6)
+
 /* === T Y P E D E F S ===================================================== */
 
 /* === C L A S S E S & S T R U C T S ======================================= */
@@ -115,6 +118,7 @@ public:
 		return ret;
 	}
 
+#ifdef ETL_NOT_USED
 	//! 180 degree rotation operator
 	/*! Returns the angle directly opposite of
 		the given angle, and will yield a result
@@ -126,7 +130,9 @@ public:
 		ret.v = v+PI;
 		return ret.mod();
 	}
+#endif // ETL_NOT_USED
 
+#ifdef ETL_WRAP_ANGLES
 	/*! Returns true if the shortest
 		angle from the left-hand to the
 		right-hand side is counter-clockwise */
@@ -164,15 +170,68 @@ public:
 		on the unit circle. */
 	bool
 	operator==(const angle &rhs)const
-	{ return std::abs(dist(rhs).v)<epsilon; }
+	{ return std::abs(dist(rhs).v)<ANGLE_EPSILON; }
 
 	/*! Returns false if the angles
 		are refer to the same point
 		on the unit circle. */
 	bool
 	operator!=(const angle &rhs)const
-	{ return std::abs(dist(rhs).v)>epsilon; }
+	{ return std::abs(dist(rhs).v)>ANGLE_EPSILON; }
+#else // ETL_WRAP_ANGLES
+	/*! Returns true if the left-hand
+		side is less than the
+		right-hand side */
+	bool
+	operator<(const angle &rhs)const
+	{ return v < rhs.v; }
+
+	/*! Returns true if the left-hand
+		side is greater than the
+		right-hand side */
+	bool
+	operator>(const angle &rhs)const
+	{ return v > rhs.v; }
+
+	/*! Returns true if the left-hand
+		side is less or equal to the
+		right-hand side */
+	bool
+	operator<=(const angle &rhs)const
+	{ return v <= rhs.v; }
+
+	/*! Returns true if the left-hand
+		side is greater than or equal
+		to the right-hand side */
+	bool
+	operator>=(const angle &rhs)const
+	{ return v >= rhs.v; }
+
+	/*! Returns true if the angles
+		are the same, or close */
+	bool
+	operator==(const angle &rhs)const
+	{ return std::abs(v - rhs.v)<ANGLE_EPSILON; }
+
+	/*! Returns false if the angles
+		are different */
+	bool
+	operator!=(const angle &rhs)const
+		{ return std::abs(v - rhs.v)>ANGLE_EPSILON; }
+#endif // ETL_WRAP_ANGLES
 
+	//! Absolute Angle Function
+	/*! This function will return the
+		absolute value of the angle. */
+	angle
+	abs()const
+	{
+		angle ret;
+		ret.v=std::abs(v);
+		return ret;
+	}
+
+#ifdef ETL_WRAP_ANGLES
 	//! Angle Difference Function
 	/*! This function will return the
 		shortest physical distance between
@@ -197,6 +256,26 @@ public:
 		ret.v-=rot_floor(ret.v);
 		return ret;
 	}
+#else // ETL_WRAP_ANGLES
+	//! Angle Difference Function
+	/*! This function will return the
+		difference between
+		two angles, just like
+		\sa angle operator-(const angle &) */
+	angle
+	dist(const angle &rhs)const
+	{ return angle(*this)-=rhs; }
+
+	//! Rotation Modulus
+	/*! This function will return the
+		value of the angle */
+	angle
+	mod()const
+	{
+		angle ret(*this);
+		return ret;
+	}
+#endif // ETL_WRAP_ANGLES
 
 	//! Zero Rotation (0 degrees)
 	static angle
@@ -225,14 +304,14 @@ public:
 		return ret;
 	}
 
-	bool operator!()const { return std::abs(mod().v) < epsilon; }
+	bool operator!()const { return std::abs(mod().v) < ANGLE_EPSILON; }
 
 private:
 
+#ifdef ETL_WRAP_ANGLES
 	static value_type rot_floor(value_type x)
 	{ return static_cast<value_type>(std::floor(x/(PI*2))*PI*2); }
-
-	static const value_type epsilon = 1.0e-6;
+#endif // ETL_WRAP_ANGLES
 
 public:
 	/*