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diff --git a/indra/llmath/v2math.h b/indra/llmath/v2math.h
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+/** 
+ * @file v2math.h
+ * @brief LLVector2 class header file.
+ *
+ * Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_V2MATH_H
+#define LL_V2MATH_H
+
+#include <math.h>
+
+#include "llmath.h"
+
+class LLVector4;
+class LLMatrix3;
+class LLQuaternion;
+
+//  Llvector2 = |x y z w|
+
+static const U32 LENGTHOFVECTOR2 = 2;
+
+class LLVector2
+{
+	public:
+		F32 mV[LENGTHOFVECTOR2];
+
+		static LLVector2 zero;
+
+		LLVector2();							// Initializes LLVector2 to (0, 0)
+		LLVector2(F32 x, F32 y);			    // Initializes LLVector2 to (x. y)
+		LLVector2(const F32 *vec);				// Initializes LLVector2 to (vec[0]. vec[1])
+		
+		// Clears LLVector2 to (0, 0).  DEPRECATED - prefer zeroVec.
+		void	clearVec();
+
+		// Zero LLVector2 to (0, 0)
+		void	zeroVec();
+
+		void	setVec(F32 x, F32 y);	        // Sets LLVector2 to (x, y)
+		void	setVec(const LLVector2 &vec);	// Sets LLVector2 to vec
+		void	setVec(const F32 *vec);			// Sets LLVector2 to vec
+
+		F32		magVec() const;				// Returns magnitude of LLVector2
+		F32		magVecSquared() const;		// Returns magnitude squared of LLVector2
+		F32		normVec();					// Normalizes and returns the magnitude of LLVector2
+
+		BOOL		abs();						// sets all values to absolute value of original value (first octant), returns TRUE if changed
+
+		const LLVector2&	scaleVec(const LLVector2& vec);				// scales per component by vec
+
+		BOOL isNull();			// Returns TRUE if vector has a _very_small_ length
+		BOOL isExactlyZero() const		{ return !mV[VX] && !mV[VY]; }
+
+		F32 operator[](int idx) const { return mV[idx]; }
+		F32 &operator[](int idx) { return mV[idx]; }
+	
+		friend bool operator<(const LLVector2 &a, const LLVector2 &b);	// For sorting. x is "more significant" than y
+		friend LLVector2 operator+(const LLVector2 &a, const LLVector2 &b);	// Return vector a + b
+		friend LLVector2 operator-(const LLVector2 &a, const LLVector2 &b);	// Return vector a minus b
+		friend F32 operator*(const LLVector2 &a, const LLVector2 &b);		// Return a dot b
+		friend LLVector2 operator%(const LLVector2 &a, const LLVector2 &b);	// Return a cross b
+		friend LLVector2 operator/(const LLVector2 &a, F32 k);				// Return a divided by scaler k
+		friend LLVector2 operator*(const LLVector2 &a, F32 k);				// Return a times scaler k
+		friend LLVector2 operator*(F32 k, const LLVector2 &a);				// Return a times scaler k
+		friend bool operator==(const LLVector2 &a, const LLVector2 &b);		// Return a == b
+		friend bool operator!=(const LLVector2 &a, const LLVector2 &b);		// Return a != b
+
+		friend const LLVector2& operator+=(LLVector2 &a, const LLVector2 &b);	// Return vector a + b
+		friend const LLVector2& operator-=(LLVector2 &a, const LLVector2 &b);	// Return vector a minus b
+		friend const LLVector2& operator%=(LLVector2 &a, const LLVector2 &b);	// Return a cross b
+		friend const LLVector2& operator*=(LLVector2 &a, F32 k);				// Return a times scaler k
+		friend const LLVector2& operator/=(LLVector2 &a, F32 k);				// Return a divided by scaler k
+
+		friend LLVector2 operator-(const LLVector2 &a);					// Return vector -a
+
+		friend std::ostream&	 operator<<(std::ostream& s, const LLVector2 &a);		// Stream a
+};
+
+
+// Non-member functions 
+
+F32	angle_between(const LLVector2 &a, const LLVector2 &b);	// Returns angle (radians) between a and b
+BOOL are_parallel(const LLVector2 &a, const LLVector2 &b, F32 epsilon=F_APPROXIMATELY_ZERO);	// Returns TRUE if a and b are very close to parallel
+F32	dist_vec(const LLVector2 &a, const LLVector2 &b);		// Returns distance between a and b
+F32	dist_vec_squared(const LLVector2 &a, const LLVector2 &b);// Returns distance sqaured between a and b
+F32	dist_vec_squared2D(const LLVector2 &a, const LLVector2 &b);// Returns distance sqaured between a and b ignoring Z component
+LLVector2 lerp(const LLVector2 &a, const LLVector2 &b, F32 u); // Returns a vector that is a linear interpolation between a and b
+
+// Constructors
+
+inline LLVector2::LLVector2(void)
+{
+	mV[VX] = 0.f;
+	mV[VY] = 0.f;
+}
+
+inline LLVector2::LLVector2(F32 x, F32 y)
+{
+	mV[VX] = x;
+	mV[VY] = y;
+}
+
+inline LLVector2::LLVector2(const F32 *vec)
+{
+	mV[VX] = vec[VX];
+	mV[VY] = vec[VY];
+}
+
+
+// Clear and Assignment Functions
+
+inline void	LLVector2::clearVec(void)
+{
+	mV[VX] = 0.f;
+	mV[VY] = 0.f;
+}
+
+inline void	LLVector2::zeroVec(void)
+{
+	mV[VX] = 0.f;
+	mV[VY] = 0.f;
+}
+
+inline void	LLVector2::setVec(F32 x, F32 y)
+{
+	mV[VX] = x;
+	mV[VY] = y;
+}
+
+inline void	LLVector2::setVec(const LLVector2 &vec)
+{
+	mV[VX] = vec.mV[VX];
+	mV[VY] = vec.mV[VY];
+}
+
+inline void	LLVector2::setVec(const F32 *vec)
+{
+	mV[VX] = vec[VX];
+	mV[VY] = vec[VY];
+}
+
+// LLVector2 Magnitude and Normalization Functions
+
+inline F32		LLVector2::magVec(void) const
+{
+	return fsqrtf(mV[0]*mV[0] + mV[1]*mV[1]);
+}
+
+inline F32		LLVector2::magVecSquared(void) const
+{
+	return mV[0]*mV[0] + mV[1]*mV[1];
+}
+
+inline F32		LLVector2::normVec(void)
+{
+	F32 mag = fsqrtf(mV[0]*mV[0] + mV[1]*mV[1]);
+	F32 oomag;
+
+	if (mag > FP_MAG_THRESHOLD)
+	{
+		oomag = 1.f/mag;
+		mV[0] *= oomag;
+		mV[1] *= oomag;
+	}
+	else
+	{
+		mV[0] = 0.f;
+		mV[1] = 0.f;
+		mag = 0;
+	}
+	return (mag);
+}
+
+inline const LLVector2&	LLVector2::scaleVec(const LLVector2& vec)
+{
+	mV[VX] *= vec.mV[VX];
+	mV[VY] *= vec.mV[VY];
+
+	return *this;
+}
+
+inline BOOL	LLVector2::isNull()
+{
+	if ( F_APPROXIMATELY_ZERO > mV[VX]*mV[VX] + mV[VY]*mV[VY] )
+	{
+		return TRUE;
+	}
+	return FALSE;
+}
+
+
+// LLVector2 Operators
+
+// For sorting. By convention, x is "more significant" than y.
+inline bool operator<(const LLVector2 &a, const LLVector2 &b)	
+{
+	if( a.mV[VX] == b.mV[VX] )
+	{
+		return a.mV[VY] < b.mV[VY];
+	}
+	else
+	{
+		return a.mV[VX] < b.mV[VX];
+	}
+}
+
+
+inline LLVector2 operator+(const LLVector2 &a, const LLVector2 &b)
+{
+	LLVector2 c(a);
+	return c += b;
+}
+
+inline LLVector2 operator-(const LLVector2 &a, const LLVector2 &b)
+{
+	LLVector2 c(a);
+	return c -= b;
+}
+
+inline F32  operator*(const LLVector2 &a, const LLVector2 &b)
+{
+	return (a.mV[0]*b.mV[0] + a.mV[1]*b.mV[1]);
+}
+
+inline LLVector2 operator%(const LLVector2 &a, const LLVector2 &b)
+{
+	return LLVector2(a.mV[0]*b.mV[1] - b.mV[0]*a.mV[1], a.mV[1]*b.mV[0] - b.mV[1]*a.mV[0]);
+}
+
+inline LLVector2 operator/(const LLVector2 &a, F32 k)
+{
+	F32 t = 1.f / k;
+	return LLVector2( a.mV[0] * t, a.mV[1] * t );
+}
+
+inline LLVector2 operator*(const LLVector2 &a, F32 k)
+{
+	return LLVector2( a.mV[0] * k, a.mV[1] * k );
+}
+
+inline LLVector2 operator*(F32 k, const LLVector2 &a)
+{
+	return LLVector2( a.mV[0] * k, a.mV[1] * k );
+}
+
+inline bool operator==(const LLVector2 &a, const LLVector2 &b)
+{
+	return (  (a.mV[0] == b.mV[0])
+			&&(a.mV[1] == b.mV[1]));
+}
+
+inline bool operator!=(const LLVector2 &a, const LLVector2 &b)
+{
+	return (  (a.mV[0] != b.mV[0])
+			||(a.mV[1] != b.mV[1]));
+}
+
+inline const LLVector2& operator+=(LLVector2 &a, const LLVector2 &b)
+{
+	a.mV[0] += b.mV[0];
+	a.mV[1] += b.mV[1];
+	return a;
+}
+
+inline const LLVector2& operator-=(LLVector2 &a, const LLVector2 &b)
+{
+	a.mV[0] -= b.mV[0];
+	a.mV[1] -= b.mV[1];
+	return a;
+}
+
+inline const LLVector2& operator%=(LLVector2 &a, const LLVector2 &b)
+{
+	LLVector2 ret(a.mV[0]*b.mV[1] - b.mV[0]*a.mV[1], a.mV[1]*b.mV[0] - b.mV[1]*a.mV[0]);
+	a = ret;
+	return a;
+}
+
+inline const LLVector2& operator*=(LLVector2 &a, F32 k)
+{
+	a.mV[0] *= k;
+	a.mV[1] *= k;
+	return a;
+}
+
+inline const LLVector2& operator/=(LLVector2 &a, F32 k)
+{
+	F32 t = 1.f / k;
+	a.mV[0] *= t;
+	a.mV[1] *= t;
+	return a;
+}
+
+inline LLVector2 operator-(const LLVector2 &a)
+{
+	return LLVector2( -a.mV[0], -a.mV[1] );
+}
+
+inline std::ostream& operator<<(std::ostream& s, const LLVector2 &a) 
+{
+	s << "{ " << a.mV[VX] << ", " << a.mV[VY] << " }";
+	return s;
+}
+
+#endif