class DVlight_position

A class which defines the position of a light.

Public Fields
float x: This is the x position of the light in homogeneous coordinates
float y: This is the y position of the light in homogeneous coordinates
float z: This is the z position of the light in homogeneous coordinates
float w: This is the w position of the light in homogeneous coordinates.

Public Methods
DVlight_position( const float x_val=0.0, const float y_val=0.0, const float z_val=1.0, const float w_val=0.0 ): Constructor
~DVlight_position(): Destructor
DVlight_position(const DVlight_position&): Copy constructor
const DVlight_position& operator=(const DVlight_position&): Sssignment operator
int operator==(const DVlight_position&) const: Check equality
int operator!=(const DVlight_position&) const: Check inequality
void set_data( const float x_val=0.0, const float y_val=0.0, const float z_val=1.0, const float w_val=0.0 ): Set_data routine which matches the constructor
void set_data(const DVlight_position&): Set the data based upon another DVlight_position
void get_data(float&, float&, float&, float&) const: Get the current light position
void get_data(DVlight_position&) const: Copy the current light position into the give DVlight_position instance.
float& operator[](const int): We want foo[0] to be foo.x, ... foo[3] to be foo.w
inline DVlight_position( const float x_val, const float y_val, const float z_val, const float w_val ): constructor
inline DVlight_position(const DVlight_position &data): copy constructor
inline void get_data( float &x_val, float &y_val, float &z_val, float &w_val ) const
inline void get_data(DVlight_position &r) const
inline int operator!=(const DVlight_position &data) const: check not equal
inline const DVlight_position& operator= (const DVlight_position &data): assignment operator
inline int operator==(const DVlight_position &data) const: check equal
inline void set_data( const float x_val, const float y_val, const float z_val, const float w_val ): set_data routine
inline void set_data(const DVlight_position &pt)
inline ~DVlight_position(): destructor (does nothing)