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Public Member Functions | Static Public Member Functions

Point4 Class Reference

This is a four-component point in space. More...

Inheritance diagram for Point4:
VBase4

List of all members.

Public Member Functions

 Point4 ()
 Point4 (VBase4 const copy)
 Point4 (float x, float y, float z, float w)
 Point4 (float fill_value)
unsigned int addHash (unsigned int hash)
 Adds the vector into the running hash.
unsigned int addHash (unsigned int hash, float threshold)
 Adds the vector into the running hash.
 addToCell (int i, float value)
 addW (float value)
 addX (float value)
 addY (float value)
 addZ (float value)
bool almostEqual (VBase4 const other, float threshold)
 Returns true if two vectors are memberwise equal within a specified tolerance.
bool almostEqual (VBase4 const other)
 Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.
int compareTo (VBase4 const other)
 This flavor of compare_to uses a default threshold value based on the numeric type.
int compareTo (VBase4 const other, float threshold)
 Sorts vectors lexicographically, componentwise.
float dot (VBase4 const other)
 fill (float fill_value)
 Sets each element of the vector to the indicated fill_value.
VBase4 fmax (VBase4 const other)
VBase4 fmin (VBase4 const other)
PyObject getattr (string attr_name)
 This is used to implement swizzle masks.
float getCell (int i)
 getData ()
 Returns the address of the first of the four data elements in the vector.
unsigned int getHash (float threshold)
 Returns a suitable hash for phash_map.
unsigned int getHash ()
 Returns a suitable hash for phash_map.
int getNumComponents ()
 Returns the number of elements in the vector, four.
float getW ()
float getX ()
float getY ()
float getZ ()
bool isNan ()
 Returns true if any component of the vector is not-a-number, false otherwise.
float length ()
 Returns the length of the vector, by the Pythagorean theorem.
float lengthSquared ()
 Returns the square of the vector's length, cheap and easy.
bool normalize ()
 Normalizes the vector in place.
 operator new (unsigned int size)
bool operator!= (VBase4 const other)
Point4 operator* (float scalar)
VBase4 operator*= (float scalar)
VBase4 operator+ (VBase4 const other)
Point4 operator+ (Vec4 const other)
VBase4 operator+= (VBase4 const other)
Point4 operator- (Vec4 const other)
Point4 operator- ()
Vec4 operator- (Point4 const other)
VBase4 operator- (VBase4 const other)
VBase4 operator-= (VBase4 const other)
Point4 operator/ (float scalar)
VBase4 operator/= (float scalar)
bool operator< (VBase4 const other)
 This performs a lexicographical comparison.
Point4 operator= (VBase4 const copy)
Point4 operator= (float fill_value)
bool operator== (VBase4 const other)
float operator[] (int i)
 operator[] (int i)
 output (ostream out)
Point4 project (VBase4 const onto)
 Returns a new vector representing the projection of this vector onto another one.
 pythonRepr (ostream out, string class_name)
PyObject reduce (PyObject self)
 This special Python method is implement to provide support for the pickle module.
 set (float x, float y, float z, float w)
int setattr (PyObject self, string attr_name, PyObject assign)
 This is used to implement write masks.
 setCell (int i, float value)
 setitem (int i, float v)
 setW (float value)
 setX (float value)
 setY (float value)
 setZ (float value)

Static Public Member Functions

static TypeHandle getClassType ()
static int size ()
 Returns 4: the number of components of a LVecBase4.
static Point4 const unitW ()
 Returns a unit W point.
static Point4 const unitX ()
 Returns a unit X point.
static Point4 const unitY ()
 Returns a unit Y point.
static Point4 const unitZ ()
 Returns a unit Z point.
static Point4 const zero ()
 Returns a zero-length point.

Detailed Description

This is a four-component point in space.


Constructor & Destructor Documentation

Point4 ( )
Point4 ( VBase4 const  copy)
Point4 ( float  fill_value)
Point4 ( float  x,
float  y,
float  z,
float  w 
)

Member Function Documentation

unsigned int addHash ( unsigned int  hash) [inherited]

Adds the vector into the running hash.

unsigned int addHash ( unsigned int  hash,
float  threshold 
) [inherited]

Adds the vector into the running hash.

addToCell ( int  i,
float  value 
) [inherited]
addW ( float  value) [inherited]
addX ( float  value) [inherited]
addY ( float  value) [inherited]
addZ ( float  value) [inherited]
bool almostEqual ( VBase4 const  other) [inherited]

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

bool almostEqual ( VBase4 const  other,
float  threshold 
) [inherited]

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

int compareTo ( VBase4 const  other,
float  threshold 
) [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).

int compareTo ( VBase4 const  other) [inherited]

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

float dot ( VBase4 const  other) [inherited]
fill ( float  fill_value) [inherited]

Sets each element of the vector to the indicated fill_value.

This is particularly useful for initializing to zero.

VBase4 fmax ( VBase4 const  other) [inherited]
VBase4 fmin ( VBase4 const  other) [inherited]
PyObject getattr ( string  attr_name)

This is used to implement swizzle masks.

Reimplemented from VBase4.

float getCell ( int  i) [inherited]
static TypeHandle getClassType ( ) [static]

Reimplemented from VBase4.

getData ( ) [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.

unsigned int getHash ( ) [inherited]

Returns a suitable hash for phash_map.

unsigned int getHash ( float  threshold) [inherited]

Returns a suitable hash for phash_map.

int getNumComponents ( ) [inherited]

Returns the number of elements in the vector, four.

float getW ( ) [inherited]
float getX ( ) [inherited]
float getY ( ) [inherited]
float getZ ( ) [inherited]
bool isNan ( ) [inherited]

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

float length ( ) [inherited]

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

float lengthSquared ( ) [inherited]

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

bool normalize ( ) [inherited]

Normalizes the vector in place.

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

Reimplemented in Quat.

operator new ( unsigned int  size) [inherited]
bool operator!= ( VBase4 const  other) [inherited]
Point4 operator* ( float  scalar)

Reimplemented from VBase4.

VBase4 operator*= ( float  scalar) [inherited]
VBase4 operator+ ( VBase4 const  other)

Reimplemented from VBase4.

Point4 operator+ ( Vec4 const  other)
VBase4 operator+= ( VBase4 const  other) [inherited]
Point4 operator- ( )

Reimplemented from VBase4.

Vec4 operator- ( Point4 const  other)
VBase4 operator- ( VBase4 const  other)

Reimplemented from VBase4.

Point4 operator- ( Vec4 const  other)
VBase4 operator-= ( VBase4 const  other) [inherited]
Point4 operator/ ( float  scalar)

Reimplemented from VBase4.

VBase4 operator/= ( float  scalar) [inherited]
bool operator< ( VBase4 const  other) [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().

Point4 operator= ( VBase4 const  copy)

Reimplemented from VBase4.

Point4 operator= ( float  fill_value)

Reimplemented from VBase4.

bool operator== ( VBase4 const  other) [inherited]
operator[] ( int  i) [inherited]
float operator[] ( int  i) [inherited]
output ( ostream  out) [inherited]

Reimplemented in Plane, and Quat.

Point4 project ( VBase4 const  onto)

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 VBase4.

pythonRepr ( ostream  out,
string  class_name 
)

Reimplemented from VBase4.

PyObject reduce ( PyObject  self) [inherited]

This special Python method is implement to provide support for the pickle module.

set ( float  x,
float  y,
float  z,
float  w 
) [inherited]
int setattr ( PyObject  self,
string  attr_name,
PyObject  assign 
)

This is used to implement write masks.

Reimplemented from VBase4.

setCell ( int  i,
float  value 
) [inherited]
setitem ( int  i,
float  v 
) [inherited]
setW ( float  value) [inherited]
setX ( float  value) [inherited]
setY ( float  value) [inherited]
setZ ( float  value) [inherited]
static int size ( ) [static, inherited]

Returns 4: the number of components of a LVecBase4.

static Point4 const unitW ( ) [static]

Returns a unit W point.

Reimplemented from VBase4.

static Point4 const unitX ( ) [static]

Returns a unit X point.

Reimplemented from VBase4.

static Point4 const unitY ( ) [static]

Returns a unit Y point.

Reimplemented from VBase4.

static Point4 const unitZ ( ) [static]

Returns a unit Z point.

Reimplemented from VBase4.

static Point4 const zero ( ) [static]

Returns a zero-length point.

Reimplemented from VBase4.

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