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LPoint3f Class Reference

This is a three-component point in space (as opposed to a three-component vector, which represents a direction and a distance). More...

#include "lpoint3.h"

Inheritance diagram for LPoint3f:
LVecBase3f

Public Member Functions

 LPoint3f (const LVecBase3f &copy)
 
 LPoint3f (float fill_value)
 
 LPoint3f (float x, float y, float z)
 
 LPoint3f (const LVecBase2f &copy, float z)
 
LPoint3f cross (const LVecBase3f &other) const
 
LPoint2f get_xy () const
 Returns a 2-component vector that shares just the first two components of this vector. More...
 
LPoint2f get_xz () const
 Returns a 2-component vector that shares just the first and last components of this vector. More...
 
LPoint2f get_yz () const
 Returns a 2-component vector that shares just the last two components of this vector. More...
 
LPoint3f operator* (float scalar) const
 
LVecBase3f operator+ (const LVecBase3f &other) const
 
LPoint3f operator+ (const LVector3f &other) const
 
LPoint3f operator- () const
 
LVecBase3f operator- (const LVecBase3f &other) const
 
LVector3f operator- (const LPoint3f &other) const
 
LPoint3f operator- (const LVector3f &other) const
 
LPoint3f operator/ (float scalar) const
 
LPoint3foperator= (const LVecBase3f &copy)
 
LPoint3foperator= (float fill_value)
 
LPoint3f project (const LVecBase3f &onto) const
 Returns a new vector representing the projection of this vector onto another one. More...
 
- Public Member Functions inherited from LVecBase3f
 LVecBase3f (const LVecBase3f &copy)
 
 LVecBase3f (float fill_value)
 
 LVecBase3f (float x, float y, float z)
 
 LVecBase3f (const LVecBase2f &copy, float z)
 
 LVecBase3f (const EVector3 &v)
 
size_t add_hash (size_t hash) const
 Adds the vector into the running hash. More...
 
size_t add_hash (size_t hash, float threshold) const
 Adds the vector into the running hash. More...
 
void add_to_cell (int i, float value)
 
void add_x (float value)
 
void add_y (float value)
 
void add_z (float value)
 
bool almost_equal (const LVecBase3f &other, float threshold) const
 Returns true if two vectors are memberwise equal within a specified tolerance. More...
 
bool almost_equal (const LVecBase3f &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 LVecBase3f &other) const
 This flavor of compare_to uses a default threshold value based on the numeric type. More...
 
int compare_to (const LVecBase3f &other, float threshold) const
 Sorts vectors lexicographically, componentwise. More...
 
void componentwise_mult (const LVecBase3f &other)
 
LVecBase3f cross (const LVecBase3f &other) const
 
void cross_into (const LVecBase3f &other)
 
float dot (const LVecBase3f &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 (float fill_value)
 Sets each element of the vector to the indicated fill_value. More...
 
LVecBase3f fmax (const LVecBase3f &other) const
 
LVecBase3f fmin (const LVecBase3f &other) const
 
void generate_hash (ChecksumHashGenerator &hashgen) const
 Adds the vector to the indicated hash generator. More...
 
void generate_hash (ChecksumHashGenerator &hashgen, float threshold) const
 Adds the vector to the indicated hash generator. More...
 
float get_cell (int i) const
 
const float * get_data () const
 Returns the address of the first of the three data elements in the vector. More...
 
size_t get_hash () const
 Returns a suitable hash for phash_map. More...
 
size_t get_hash (float threshold) const
 Returns a suitable hash for phash_map. More...
 
int get_num_components () const
 Returns the number of elements in the vector, three. More...
 
LVecBase3f get_standardized_hpr () const
 Try to un-spin the hpr to a standard form. More...
 
float get_x () const
 
LVecBase2f get_xy () const
 Returns a 2-component vector that shares just the first two components of this vector. More...
 
LVecBase2f get_xz () const
 Returns a 2-component vector that shares just the first and last components of this vector. More...
 
float get_y () const
 
LVecBase2f get_yz () const
 Returns a 2-component vector that shares just the last two components of this vector. More...
 
float get_z () const
 
bool is_nan () const
 Returns true if any component of the vector is not-a-number, false otherwise. More...
 
float length () const
 Returns the length of the vector, by the Pythagorean theorem. More...
 
float length_squared () const
 Returns the square of the vector's length, cheap and easy. More...
 
bool normalize ()
 Normalizes the vector in place. More...
 
bool operator!= (const LVecBase3f &other) const
 
LVecBase3f operator* (float scalar) const
 
void operator*= (float scalar)
 
LVecBase3f operator+ (const LVecBase3f &other) const
 
void operator+= (const LVecBase3f &other)
 
LVecBase3f operator- () const
 
LVecBase3f operator- (const LVecBase3f &other) const
 
void operator-= (const LVecBase3f &other)
 
LVecBase3f operator/ (float scalar) const
 
void operator/= (float scalar)
 
bool operator< (const LVecBase3f &other) const
 This performs a lexicographical comparison. More...
 
LVecBase3foperator= (const LVecBase3f &copy)
 
LVecBase3foperator= (float fill_value)
 
bool operator== (const LVecBase3f &other) const
 
float operator[] (int i) const
 
float & operator[] (int i)
 
void output (ostream &out) const
 
LVecBase3f project (const LVecBase3f &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 (float x, float y, float z)
 
void set_cell (int i, float value)
 
void set_x (float value)
 
void set_y (float value)
 
void set_z (float 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 const LPoint3forigin (CoordinateSystem cs=CS_default)
 Returns the origin of the indicated coordinate system. More...
 
static LPoint3f rfu (float right, float fwd, float up, CoordinateSystem cs=CS_default)
 Returns a point described by right, forward, up displacements from the origin, wherever that maps to in the given coordinate system. More...
 
static const LPoint3funit_x ()
 Returns a unit X point. More...
 
static const LPoint3funit_y ()
 Returns a unit Y point. More...
 
static const LPoint3funit_z ()
 Returns a unit Z point. More...
 
static const LPoint3fzero ()
 Returns a zero-length point. More...
 
- Static Public Member Functions inherited from LVecBase3f
static TypeHandle get_class_type ()
 
static void init_type ()
 
static int size ()
 Returns 3: the number of components of a LVecBase3. More...
 
static const LVecBase3funit_x ()
 Returns a unit X vector. More...
 
static const LVecBase3funit_y ()
 Returns a unit Y vector. More...
 
static const LVecBase3funit_z ()
 Returns a unit Z vector. More...
 
static const LVecBase3fzero ()
 Returns a zero-length vector. More...
 

Additional Inherited Members

- Public Types inherited from LVecBase3f
enum  { num_components = 3, is_int = 0 }
 
typedef const float * const_iterator
 
typedef LSimpleMatrix< float, 1, 3 > EVector3
 
typedef const float * iterator
 
typedef float numeric_type
 
- Public Attributes inherited from LVecBase3f
EVector3 _v
 

Detailed Description

This is a three-component point in space (as opposed to a three-component vector, which represents a direction and a distance).

Some of the methods are slightly different between LPoint3 and LVector3; in particular, subtraction of two points yields a vector, while addition of a vector and a point yields a point.

Definition at line 99 of file lpoint3.h.

Member Function Documentation

LPoint2f LPoint3f::get_xy ( ) const
inline

Returns a 2-component vector that shares just the first two components of this vector.

Definition at line 299 of file lpoint3.h.

LPoint2f LPoint3f::get_xz ( ) const
inline

Returns a 2-component vector that shares just the first and last components of this vector.

Definition at line 310 of file lpoint3.h.

LPoint2f LPoint3f::get_yz ( ) const
inline

Returns a 2-component vector that shares just the last two components of this vector.

Definition at line 321 of file lpoint3.h.

const LPoint3f & LPoint3f::origin ( CoordinateSystem  cs = CS_default)
inlinestatic

Returns the origin of the indicated coordinate system.

This is always 0, 0, 0 with all of our existing coordinate systems; it's hard to imagine it ever being different.

Definition at line 438 of file lpoint3.h.

Referenced by CollisionPlane::get_collision_origin(), CollisionFloorMesh::get_collision_origin(), CollisionRay::set_from_lens(), and CollisionSegment::set_from_lens().

LPoint3f LPoint3f::project ( const LVecBase3f 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 404 of file lpoint3.h.

LPoint3f LPoint3f::rfu ( float  right,
float  fwd,
float  up,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a point described by right, forward, up displacements from the origin, wherever that maps to in the given coordinate system.

Definition at line 450 of file lpoint3.h.

Referenced by PGItem::activate_region(), and PGEntry::setup().

const LPoint3f & LPoint3f::unit_x ( )
inlinestatic

Returns a unit X point.

Definition at line 268 of file lpoint3.h.

const LPoint3f & LPoint3f::unit_y ( )
inlinestatic

Returns a unit Y point.

Definition at line 278 of file lpoint3.h.

const LPoint3f & LPoint3f::unit_z ( )
inlinestatic

Returns a unit Z point.

Definition at line 288 of file lpoint3.h.

const LPoint3f & LPoint3f::zero ( )
inlinestatic

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