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Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
LVecBase2d Class Reference

This is the base class for all two-component vectors and points. More...

#include "lvecBase2.h"

Inheritance diagram for LVecBase2d:
LPoint2d LVector2d

Public Types

enum  { num_components = 2, is_int = 0 }
 
typedef const double * const_iterator
 
typedef LSimpleMatrix< double, 1, 2 > EVector2
 
typedef const double * iterator
 
typedef double numeric_type
 

Public Member Functions

 LVecBase2d (const LVecBase2d &copy)
 
 LVecBase2d (double fill_value)
 
 LVecBase2d (double x, double y)
 
 LVecBase2d (const EVector2 &v)
 
size_t add_hash (size_t hash) const
 Adds the vector into the running hash. More...
 
size_t add_hash (size_t hash, double threshold) const
 Adds the vector into the running hash. More...
 
void add_to_cell (int i, double value)
 
void add_x (double value)
 
void add_y (double value)
 
bool almost_equal (const LVecBase2d &other, double threshold) const
 Returns true if two vectors are memberwise equal within a specified tolerance. More...
 
bool almost_equal (const LVecBase2d &other) const
 Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type. More...
 
iterator begin ()
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style. More...
 
const_iterator begin () const
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style. More...
 
int compare_to (const LVecBase2d &other) const
 This flavor of compare_to uses a default threshold value based on the numeric type. More...
 
int compare_to (const LVecBase2d &other, double threshold) const
 Sorts vectors lexicographically, componentwise. More...
 
void componentwise_mult (const LVecBase2d &other)
 
double dot (const LVecBase2d &other) const
 
iterator end ()
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style. More...
 
const_iterator end () const
 Returns an iterator that may be used to traverse the elements of the matrix, STL-style. More...
 
void fill (double fill_value)
 Sets each element of the vector to the indicated fill_value. More...
 
LVecBase2d fmax (const LVecBase2d &other) const
 
LVecBase2d fmin (const LVecBase2d &other) const
 
void generate_hash (ChecksumHashGenerator &hashgen) const
 Adds the vector to the indicated hash generator. More...
 
void generate_hash (ChecksumHashGenerator &hashgen, double threshold) const
 Adds the vector to the indicated hash generator. More...
 
double get_cell (int i) const
 
const double * get_data () const
 Returns the address of the first of the two data elements in the vector. More...
 
size_t get_hash () const
 Returns a suitable hash for phash_map. More...
 
size_t get_hash (double threshold) const
 Returns a suitable hash for phash_map. More...
 
int get_num_components () const
 Returns the number of elements in the vector, two. More...
 
double get_x () const
 
double get_y () const
 
bool is_nan () const
 Returns true if any component of the vector is not-a-number, false otherwise. More...
 
double length () const
 Returns the length of the vector, by the Pythagorean theorem. More...
 
double length_squared () const
 Returns the square of the vector's length, cheap and easy. More...
 
bool normalize ()
 Normalizes the vector in place. More...
 
LVecBase2d normalized () const
 Normalizes the vector and returns the normalized vector as a copy. More...
 
bool operator!= (const LVecBase2d &other) const
 
LVecBase2d operator* (double scalar) const
 
void operator*= (double scalar)
 
LVecBase2d operator+ (const LVecBase2d &other) const
 
void operator+= (const LVecBase2d &other)
 
LVecBase2d operator- () const
 
LVecBase2d operator- (const LVecBase2d &other) const
 
void operator-= (const LVecBase2d &other)
 
LVecBase2d operator/ (double scalar) const
 
void operator/= (double scalar)
 
bool operator< (const LVecBase2d &other) const
 This performs a lexicographical comparison. More...
 
LVecBase2doperator= (const LVecBase2d &copy)
 
LVecBase2doperator= (double fill_value)
 
bool operator== (const LVecBase2d &other) const
 
double operator[] (int i) const
 
double & operator[] (int i)
 
void output (ostream &out) const
 
LVecBase2d project (const LVecBase2d &onto) const
 Returns a new vector representing the projection of this vector onto another one. More...
 
void read_datagram (DatagramIterator &source)
 Reads the vector from the Datagram using get_stdfloat(). More...
 
void read_datagram_fixed (DatagramIterator &source)
 Reads the vector from the Datagram using get_float32() or get_float64(). More...
 
void set (double x, double y)
 
void set_cell (int i, double value)
 
void set_x (double value)
 
void set_y (double value)
 
void write_datagram (Datagram &destination) const
 Writes the vector to the Datagram using add_stdfloat(). More...
 
void write_datagram_fixed (Datagram &destination) const
 Writes the vector to the Datagram using add_float32() or add_float64(), depending on the type of floats in the vector, regardless of the setting of Datagram::set_stdfloat_double(). More...
 

Static Public Member Functions

static TypeHandle get_class_type ()
 
static void init_type ()
 
static int size ()
 Returns 2: the number of components of a LVecBase2. More...
 
static const LVecBase2dunit_x ()
 Returns a unit X vector. More...
 
static const LVecBase2dunit_y ()
 Returns a unit Y vector. More...
 
static const LVecBase2dzero ()
 Returns a zero-length vector. More...
 

Public Attributes

EVector2 _v
 

Detailed Description

This is the base class for all two-component vectors and points.

Definition at line 1257 of file lvecBase2.h.

Member Function Documentation

◆ add_hash() [1/2]

size_t LVecBase2d::add_hash ( size_t  hash) const
inline

Adds the vector into the running hash.

Definition at line 1955 of file lvecBase2.h.

References integer_hash< Key, Compare >::add_hash().

◆ add_hash() [2/2]

size_t LVecBase2d::add_hash ( size_t  hash,
double  threshold 
) const
inline

Adds the vector into the running hash.

Definition at line 2020 of file lvecBase2.h.

References floating_point_hash< Key >::add_hash().

◆ almost_equal() [1/2]

bool LVecBase2d::almost_equal ( const LVecBase2d other,
double  threshold 
) const
inline

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

Definition at line 2230 of file lvecBase2.h.

Referenced by TextureReference::apply_properties_to_source(), and TextureReference::is_equivalent().

◆ almost_equal() [2/2]

bool LVecBase2d::almost_equal ( const LVecBase2d other) const
inline

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

Definition at line 2243 of file lvecBase2.h.

◆ begin() [1/2]

LVecBase2d::iterator LVecBase2d::begin ( )
inline

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

Definition at line 1714 of file lvecBase2.h.

◆ begin() [2/2]

LVecBase2d::const_iterator LVecBase2d::begin ( ) const
inline

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

Definition at line 1736 of file lvecBase2.h.

◆ compare_to() [1/2]

int LVecBase2d::compare_to ( const LVecBase2d other) const
inline

This flavor of compare_to uses a default threshold value based on the numeric type.

Definition at line 1923 of file lvecBase2.h.

Referenced by XFileVertex::set_from_egg().

◆ compare_to() [2/2]

int LVecBase2d::compare_to ( const LVecBase2d other,
double  threshold 
) const
inline

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 1992 of file lvecBase2.h.

◆ end() [1/2]

LVecBase2d::iterator LVecBase2d::end ( )
inline

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

Definition at line 1725 of file lvecBase2.h.

◆ end() [2/2]

LVecBase2d::const_iterator LVecBase2d::end ( ) const
inline

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

Definition at line 1747 of file lvecBase2.h.

◆ fill()

void LVecBase2d::fill ( double  fill_value)
inline

Sets each element of the vector to the indicated fill_value.

This is particularly useful for initializing to zero.

Definition at line 1759 of file lvecBase2.h.

◆ generate_hash() [1/2]

void LVecBase2d::generate_hash ( ChecksumHashGenerator hashgen) const
inline

Adds the vector to the indicated hash generator.

Definition at line 1972 of file lvecBase2.h.

References ChecksumHashGenerator::add_int().

◆ generate_hash() [2/2]

void LVecBase2d::generate_hash ( ChecksumHashGenerator hashgen,
double  threshold 
) const
inline

Adds the vector to the indicated hash generator.

Definition at line 2034 of file lvecBase2.h.

References ChecksumHashGenerator::add_fp().

◆ get_data()

const double * LVecBase2d::get_data ( ) const
inline

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

The next element occupies the next position consecutively in memory.

Definition at line 1693 of file lvecBase2.h.

Referenced by Shader::get_language(), and XFileDataObject::set().

◆ get_hash() [1/2]

size_t LVecBase2d::get_hash ( ) const
inline

Returns a suitable hash for phash_map.

Definition at line 1944 of file lvecBase2.h.

◆ get_hash() [2/2]

size_t LVecBase2d::get_hash ( double  threshold) const
inline

Returns a suitable hash for phash_map.

Definition at line 2009 of file lvecBase2.h.

◆ get_num_components()

int LVecBase2d::get_num_components ( ) const
inline

Returns the number of elements in the vector, two.

Definition at line 1703 of file lvecBase2.h.

Referenced by Shader::get_language().

◆ is_nan()

bool LVecBase2d::is_nan ( ) const
inline

Returns true if any component of the vector is not-a-number, false otherwise.

Definition at line 1583 of file lvecBase2.h.

◆ length()

double LVecBase2d::length ( ) const
inline

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

Definition at line 1816 of file lvecBase2.h.

Referenced by CLwoSurface::check_material(), and MayaShaderColorDef::get_panda_uvset_name().

◆ length_squared()

double LVecBase2d::length_squared ( ) const
inline

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

Definition at line 1799 of file lvecBase2.h.

Referenced by EggLoader::make_polyset().

◆ normalize()

bool LVecBase2d::normalize ( )
inline

Normalizes the vector in place.

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

Definition at line 1833 of file lvecBase2.h.

Referenced by CollisionTube::get_test_pcollector().

◆ normalized()

LVecBase2d LVecBase2d::normalized ( ) const
inline

Normalizes the vector and returns the normalized vector as a copy.

If the vector was a zero-length vector, a zero length vector will be returned.

Definition at line 1854 of file lvecBase2.h.

◆ operator<()

bool LVecBase2d::operator< ( const LVecBase2d other) const
inline

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 1885 of file lvecBase2.h.

◆ project()

LVecBase2d LVecBase2d::project ( const LVecBase2d 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.

Definition at line 1870 of file lvecBase2.h.

References LVecBase2f::length_squared().

◆ read_datagram()

void LVecBase2d::read_datagram ( DatagramIterator source)
inline

Reads the vector from the Datagram using get_stdfloat().

Definition at line 2329 of file lvecBase2.h.

References DatagramIterator::get_int32(), and DatagramIterator::get_stdfloat().

◆ read_datagram_fixed()

void LVecBase2d::read_datagram_fixed ( DatagramIterator source)
inline

Reads the vector from the Datagram using get_float32() or get_float64().

See write_datagram_fixed().

Definition at line 2291 of file lvecBase2.h.

References DatagramIterator::get_float32(), DatagramIterator::get_float64(), and DatagramIterator::get_int32().

◆ size()

int LVecBase2d::size ( )
inlinestatic

Returns 2: the number of components of a LVecBase2.

Definition at line 1572 of file lvecBase2.h.

◆ unit_x()

const LVecBase2d & LVecBase2d::unit_x ( )
inlinestatic

Returns a unit X vector.

Definition at line 1521 of file lvecBase2.h.

◆ unit_y()

const LVecBase2d & LVecBase2d::unit_y ( )
inlinestatic

Returns a unit Y vector.

Definition at line 1531 of file lvecBase2.h.

◆ write_datagram()

void LVecBase2d::write_datagram ( Datagram destination) const
inline

Writes the vector to the Datagram using add_stdfloat().

This is appropriate when you want to write the vector using the standard width setting, especially when you are writing a bam file.

Definition at line 2313 of file lvecBase2.h.

References Datagram::add_int32(), and Datagram::add_stdfloat().

◆ write_datagram_fixed()

void LVecBase2d::write_datagram_fixed ( Datagram destination) const
inline

Writes the vector to the Datagram using add_float32() or add_float64(), depending on the type of floats in the vector, regardless of the setting of Datagram::set_stdfloat_double().

This is appropriate when you want to write a fixed-width value to the datagram, especially when you are not writing a bam file.

Definition at line 2271 of file lvecBase2.h.

References Datagram::add_float32(), Datagram::add_float64(), and Datagram::add_int32().

◆ zero()

const LVecBase2d & LVecBase2d::zero ( )
inlinestatic

Returns a zero-length vector.

Definition at line 1511 of file lvecBase2.h.

Referenced by GeomVertexReader::get_data2d().


The documentation for this class was generated from the following files: