Panda3D
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes

LVector4f Class Reference

This is a four-component vector distance. More...

#include "lvector4.h"

Inheritance diagram for LVector4f:
LVecBase4f

List of all members.

Public Types

typedef const float * const_iterator
typedef const float * iterator

Public Member Functions

 LVector4f (const LVecBase4f &copy)
 LVector4f (float fill_value)
 LVector4f (float x, float y, float z, float w)
size_t add_hash (size_t hash) const
 Adds the vector into the running hash.
size_t add_hash (size_t hash, float threshold) const
 Adds the vector into the running hash.
void add_to_cell (int i, float value)
void add_w (float value)
void add_x (float value)
void add_y (float value)
void add_z (float value)
bool almost_equal (const LVecBase4f &other, float threshold) const
 Returns true if two vectors are memberwise equal within a specified tolerance.
bool almost_equal (const LVecBase4f &other) const
 Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.
iterator begin ()
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
const_iterator begin () const
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
int compare_to (const LVecBase4f &other, float threshold) const
 Sorts vectors lexicographically, componentwise.
int compare_to (const LVecBase4f &other) const
 This flavor of compare_to uses a default threshold value based on the numeric type.
float dot (const LVecBase4f &other) const
iterator end ()
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
const_iterator end () const
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
void fill (float fill_value)
 Sets each element of the vector to the indicated fill_value.
LVecBase4f fmax (const LVecBase4f &other)
LVecBase4f fmin (const LVecBase4f &other)
void generate_hash (ChecksumHashGenerator &hashgen, float threshold) const
 Adds the vector to the indicated hash generator.
void generate_hash (ChecksumHashGenerator &hashgen) const
 Adds the vector to the indicated hash generator.
float get_cell (int i) const
const float * get_data () const
 Returns the address of the first of the four data elements in the vector.
size_t get_hash () const
 Returns a suitable hash for phash_map.
size_t get_hash (float threshold) const
 Returns a suitable hash for phash_map.
int get_num_components () const
 Returns the number of elements in the vector, four.
float get_w () const
float get_x () const
float get_y () const
float get_z () const
bool is_nan () const
 Returns true if any component of the vector is not-a-number, false otherwise.
float length () const
 Returns the length of the vector, by the Pythagorean theorem.
float length_squared () const
 Returns the square of the vector's length, cheap and easy.
bool normalize ()
 Normalizes the vector in place.
bool operator!= (const LVecBase4f &other) const
LVector4f operator* (float scalar) const
void operator*= (float scalar)
LVecBase4f operator+ (const LVecBase4f &other) const
LVector4f operator+ (const LVector4f &other) const
void operator+= (const LVecBase4f &other)
LVecBase4f operator- (const LVecBase4f &other) const
LVector4f operator- (const LVector4f &other) const
LVector4f operator- () const
void operator-= (const LVecBase4f &other)
LVector4f operator/ (float scalar) const
void operator/= (float scalar)
bool operator< (const LVecBase4f &other) const
 This performs a lexicographical comparison.
LVector4foperator= (float fill_value)
LVector4foperator= (const LVecBase4f &copy)
bool operator== (const LVecBase4f &other) const
float & operator[] (int i)
float operator[] (int i) const
void output (ostream &out) const
LVector4f project (const LVecBase4f &onto) const
 Returns a new vector representing the projection of this vector onto another one.
void read_datagram (DatagramIterator &source)
 Function to read itself from a datagramIterator.
void set (float x, float y, float z, float w)
void set_cell (int i, float value)
void set_w (float value)
void set_x (float value)
void set_y (float value)
void set_z (float value)
void write_datagram (Datagram &destination) const
 Function to write itself into a datagram.

Static Public Member Functions

static TypeHandle get_class_type ()
static void init_type ()
static int size ()
 Returns 4: the number of components of a LVecBase4.
static const LVector4funit_w ()
 Returns a unit W vector.
static const LVector4funit_x ()
 Returns a unit X vector.
static const LVector4funit_y ()
 Returns a unit Y vector.
static const LVector4funit_z ()
 Returns a unit Z vector.
static const LVector4fzero ()
 Returns a zero-length vector.

Public Attributes

union {
   float   data [4]
   struct {
      float   _0
      float   _1
      float   _2
      float   _3
   }   v
_v

Detailed Description

This is a four-component vector distance.

Definition at line 85 of file lvector4.h.


Member Function Documentation

size_t LVecBase4f::add_hash ( size_t  hash) const [inline, inherited]

Adds the vector into the running hash.

Definition at line 883 of file lvecBase4.h.

size_t LVecBase4f::add_hash ( size_t  hash,
float  threshold 
) const [inline, inherited]

Adds the vector into the running hash.

Definition at line 894 of file lvecBase4.h.

bool LVecBase4f::almost_equal ( const LVecBase4f other,
float  threshold 
) const [inline, inherited]

Returns true if two vectors are memberwise equal within a specified tolerance.

Definition at line 1055 of file lvecBase4.h.

Referenced by EggVertexPool::check_overall_color(), ColorScaleAttrib::fillin(), and EggLoader::make_polyset().

bool LVecBase4f::almost_equal ( const LVecBase4f other) const [inline, inherited]

Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.

Definition at line 1070 of file lvecBase4.h.

LVecBase4f::iterator LVecBase4f::begin ( ) [inline, inherited]

Returns an iterator that may be used to traverse the elements of the matrix, STL-style.

Definition at line 642 of file lvecBase4.h.

LVecBase4f::const_iterator LVecBase4f::begin ( ) const [inline, inherited]

Returns an iterator that may be used to traverse the elements of the matrix, STL-style.

Definition at line 664 of file lvecBase4.h.

int LVecBase4f::compare_to ( const LVecBase4f other,
float  threshold 
) const [inline, inherited]

Sorts vectors lexicographically, componentwise.

Returns a number less than 0 if this vector sorts before the other one, greater than zero if it sorts after, 0 if they are equivalent (within the indicated tolerance).

Definition at line 838 of file lvecBase4.h.

int LVecBase4f::compare_to ( const LVecBase4f other) const [inline, inherited]
LVecBase4f::iterator LVecBase4f::end ( ) [inline, inherited]

Returns an iterator that may be used to traverse the elements of the matrix, STL-style.

Definition at line 653 of file lvecBase4.h.

LVecBase4f::const_iterator LVecBase4f::end ( ) const [inline, inherited]

Returns an iterator that may be used to traverse the elements of the matrix, STL-style.

Definition at line 675 of file lvecBase4.h.

void LVecBase4f::fill ( float  fill_value) [inline, inherited]

Sets each element of the vector to the indicated fill_value.

This is particularly useful for initializing to zero.

Definition at line 687 of file lvecBase4.h.

void LVecBase4f::generate_hash ( ChecksumHashGenerator hashgen) const [inline, inherited]

Adds the vector to the indicated hash generator.

Definition at line 1110 of file lvecBase4.h.

void LVecBase4f::generate_hash ( ChecksumHashGenerator hashgen,
float  threshold 
) const [inline, inherited]

Adds the vector to the indicated hash generator.

Definition at line 1121 of file lvecBase4.h.

const float * LVecBase4f::get_data ( ) const [inline, inherited]

Returns the address of the first of the four data elements in the vector.

The remaining elements occupy the next positions consecutively in memory.

Definition at line 621 of file lvecBase4.h.

Referenced by DXGraphicsStateGuardian9::bind_light(), DXGraphicsStateGuardian8::bind_light(), GraphicsStateGuardian::fetch_specified_part(), DXGraphicsStateGuardian9::get_light_color(), and DXGraphicsStateGuardian8::get_light_color().

size_t LVecBase4f::get_hash ( ) const [inline, inherited]

Returns a suitable hash for phash_map.

Definition at line 861 of file lvecBase4.h.

size_t LVecBase4f::get_hash ( float  threshold) const [inline, inherited]

Returns a suitable hash for phash_map.

Definition at line 872 of file lvecBase4.h.

int LVecBase4f::get_num_components ( ) const [inline, inherited]

Returns the number of elements in the vector, four.

Definition at line 631 of file lvecBase4.h.

bool LVecBase4f::is_nan ( ) const [inline, inherited]
float LVecBase4f::length ( ) const [inline, inherited]

Returns the length of the vector, by the Pythagorean theorem.

Definition at line 716 of file lvecBase4.h.

float LVecBase4f::length_squared ( ) const [inline, inherited]

Returns the square of the vector's length, cheap and easy.

Definition at line 727 of file lvecBase4.h.

bool LVecBase4f::normalize ( ) [inline, inherited]

Normalizes the vector in place.

Returns true if the vector was normalized, false if it was a zero-length vector.

Reimplemented in LQuaternionf.

Definition at line 739 of file lvecBase4.h.

bool LVecBase4f::operator< ( const LVecBase4f other) const [inline, inherited]

This performs a lexicographical comparison.

It's of questionable mathematical meaning, but sometimes has a practical purpose for sorting unique vectors, especially in an STL container. Also see compare_to().

Definition at line 787 of file lvecBase4.h.

LVector4f LVector4f::project ( const LVecBase4f onto) const [inline]

Returns a new vector representing the projection of this vector onto another one.

The resulting vector will be a scalar multiple of onto.

Reimplemented from LVecBase4f.

Definition at line 338 of file lvector4.h.

void LVecBase4f::read_datagram ( DatagramIterator source) [inline, inherited]
int LVecBase4f::size ( ) [inline, static, inherited]

Returns 4: the number of components of a LVecBase4.

Definition at line 444 of file lvecBase4.h.

const LVector4f & LVector4f::unit_w ( ) [inline, static]

Returns a unit W vector.

Reimplemented from LVecBase4f.

Definition at line 255 of file lvector4.h.

const LVector4f & LVector4f::unit_x ( ) [inline, static]

Returns a unit X vector.

Reimplemented from LVecBase4f.

Definition at line 225 of file lvector4.h.

const LVector4f & LVector4f::unit_y ( ) [inline, static]

Returns a unit Y vector.

Reimplemented from LVecBase4f.

Definition at line 235 of file lvector4.h.

const LVector4f & LVector4f::unit_z ( ) [inline, static]

Returns a unit Z vector.

Reimplemented from LVecBase4f.

Definition at line 245 of file lvector4.h.

void LVecBase4f::write_datagram ( Datagram destination) const [inline, inherited]
const LVector4f & LVector4f::zero ( ) [inline, static]

Returns a zero-length vector.

Reimplemented from LVecBase4f.

Definition at line 215 of file lvector4.h.


The documentation for this class was generated from the following files:
 All Classes Functions Variables Enumerations