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C:/temp/src/j2k/Beta/Math/Vector/Vector2D.cpp

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#ifndef __J2K__JVector2D_CPP__
#define __J2K__JVector2D_CPP__

#include <j2k/Fred/Math/Vector/Vector2D.hpp>

JVector2D::JVector2D()
  : X( 0.0 ), Y( 0.0 ) { }

JVector2D::JVector2D( const JVector2D& v )
  : X( v.X ), Y( v.Y ) { }

JVector2D::JVector2D( const double x, const double y )
  : X( x ), Y( y ) { }

JVector2D& JVector2D::operator=( const JVector2D& v ) {
  if ( this != &v ) {
    X = v.X;
    Y = v.Y;
  }
  return *this;
}

JVector2D operator+( const JVector2D& v1, const JVector2D& v2 ) {
  return JVector2D( v1.X + v2.X, v1.Y + v2.Y );
}

void JVector2D::operator+=( const JVector2D& v ) {
  X += v.X;
  Y += v.Y;
}

JVector2D operator-( const JVector2D& v1, const JVector2D& v2 ) {
  return JVector2D( v1.X - v2.X, v1.Y - v2.Y );
}

void JVector2D::operator-=( const JVector2D& v ) {
  X -= v.X;
  Y -= v.Y;
}

JVector2D operator*( const JVector2D& v1, const JVector2D& v2 ) {
  return JVector2D( v1.X * v2.X, v1.Y * v2.Y );
}

void JVector2D::operator*=( const JVector2D& v ) {
  X *= v.X;
  Y *= v.Y;
}

void JVector2D::operator*=( const double Factor ) {
  X *= Factor;
  Y *= Factor;
}

JVector2D operator/( const JVector2D& v1, const JVector2D& v2 ) {
  return JVector2D( v1.X / v2.X, v1.Y / v2.Y );
}

void JVector2D::operator/=( const JVector2D& v ) {
  X /= v.X;
  Y /= v.Y;
}

JVector2D operator/( const JVector2D& v1, const double Factor ) {
  return JVector2D( v1.X / Factor, v1.Y / Factor );
}

BOOL JVector2D::Compare( const JVector2D& v ) const {
  if ( this == &vecToTest )  return TRUE;

  // Compare the values of the objects
  if ( v.X != X ) return FALSE;
  if ( v.Y != Y ) return FALSE;

  return TRUE;
}

inline BOOL JVector2D::operator==( const JVector2D& v ) const {
  return Compare( v );
}

inline BOOL JVector2D::operator!=( const JVector2D& v ) const {
  return !Compare( v );
}

inline BOOL JVector2D::bAtOrg() const {
  if ( (X == 0.0)  &&  (Y == 0.0) )  return TRUE;
  return FALSE;
}

inline double Dot(const JVector2D& v1, const JVector2D& v2) {
  return (v1.X * v2.X) + (v1.Y * v2.Y);
}

inline double JVector2D::Magnitude() const {
  return sqrt( (X * X) + (Y * Y) );
}

inline void JVector2D::Normalize() {
  double Mag = sqrt( (X * X) + (Y * Y) );
  X /= Mag;
  Y /= Mag;
}

void JVector2D::ToRadians() {
  if (abs(X) > 360.0)
  X = mod(X, 360.0);
  if (abs(Y) > 360.0)
  Y = mod(Y, 360.0);

  X *= MATH_PI / 180.0;
  Y *= MATH_PI / 180.0;
}

JVector2D vecHalfBetween(const JVector2D& v1, const JVector2D& v2) {
  return JVector2D( 0.5 * (v1.X + v2.X), 0.5  * (v1.Y + v2.Y) );
}

inline double JVector2D::X() const {
  return X;
}

inline double JVector2D::X(const double x) {
  X = x;
  return X;
}

inline double JVector2D::Y() const {
  return Y;
}

inline double JVector2D::Y(const double y ) {
  Y = y;
  return Y;
}

inline void JVector2D::Negate() {
  X = -X;
  Y = -Y;
}

inline void JVector2D::Set( const double x, const double y ) {
  X = x;
  Y = y;
}

inline void JVector2D::Square() {
  X *= X;
  Y *= Y;
}

#endif

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