Panda3D
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This is the base class for all two-component vectors and points. More...
#include "lvecBase2.h"
Public Types | |
typedef const float * | const_iterator |
typedef const float * | iterator |
Public Member Functions | |
LVecBase2f (const LVecBase2f ©) | |
LVecBase2f (float fill_value) | |
LVecBase2f (float x, float y) | |
LVecBase2f (const EVector2 &v) | |
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_x (float value) |
void | add_y (float value) |
bool | almost_equal (const LVecBase2f &other, float threshold) const |
Returns true if two vectors are memberwise equal within a specified tolerance. | |
bool | almost_equal (const LVecBase2f &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 LVecBase2f &other) const |
This flavor of compare_to uses a default threshold value based on the numeric type. | |
int | compare_to (const LVecBase2f &other, float threshold) const |
Sorts vectors lexicographically, componentwise. | |
float | dot (const LVecBase2f &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. | |
LVecBase2f | fmax (const LVecBase2f &other) |
LVecBase2f | fmin (const LVecBase2f &other) |
void | generate_hash (ChecksumHashGenerator &hashgen) const |
Adds the vector to the indicated hash generator. | |
void | generate_hash (ChecksumHashGenerator &hashgen, float threshold) 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 two 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, two. | |
float | get_x () const |
float | get_y () 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 LVecBase2f &other) const |
LVecBase2f | operator* (float scalar) const |
void | operator*= (float scalar) |
LVecBase2f | operator+ (const LVecBase2f &other) const |
void | operator+= (const LVecBase2f &other) |
LVecBase2f | operator- () const |
LVecBase2f | operator- (const LVecBase2f &other) const |
void | operator-= (const LVecBase2f &other) |
LVecBase2f | operator/ (float scalar) const |
void | operator/= (float scalar) |
bool | operator< (const LVecBase2f &other) const |
This performs a lexicographical comparison. | |
LVecBase2f & | operator= (const LVecBase2f ©) |
LVecBase2f & | operator= (float fill_value) |
bool | operator== (const LVecBase2f &other) const |
float | operator[] (int i) const |
float & | operator[] (int i) |
void | output (ostream &out) const |
LVecBase2f | project (const LVecBase2f &onto) const |
Returns a new vector representing the projection of this vector onto another one. | |
void | read_datagram (DatagramIterator &source) |
Reads the vector from the Datagram using get_stdfloat(). | |
void | read_datagram_fixed (DatagramIterator &source) |
Reads the vector from the Datagram using get_float32() or get_float64(). | |
void | set (float x, float y) |
void | set_cell (int i, float value) |
void | set_x (float value) |
void | set_y (float value) |
typedef | UNALIGNED_LINMATH_MATRIX (float, 1, 2) EVector2 |
void | write_datagram (Datagram &destination) const |
Writes the vector to the Datagram using add_stdfloat(). | |
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(). | |
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. | |
static const LVecBase2f & | unit_x () |
Returns a unit X vector. | |
static const LVecBase2f & | unit_y () |
Returns a unit Y vector. | |
static const LVecBase2f & | zero () |
Returns a zero-length vector. | |
Public Attributes | |
EVector2 | _v |
This is the base class for all two-component vectors and points.
Definition at line 97 of file lvecBase2.h.
size_t LVecBase2f::add_hash | ( | size_t | hash | ) | const [inline] |
Adds the vector into the running hash.
Definition at line 775 of file lvecBase2.h.
size_t LVecBase2f::add_hash | ( | size_t | hash, |
float | threshold | ||
) | const [inline] |
Adds the vector into the running hash.
Definition at line 786 of file lvecBase2.h.
bool LVecBase2f::almost_equal | ( | const LVecBase2f & | other, |
float | threshold | ||
) | const [inline] |
Returns true if two vectors are memberwise equal within a specified tolerance.
Definition at line 951 of file lvecBase2.h.
bool LVecBase2f::almost_equal | ( | const LVecBase2f & | other | ) | const [inline] |
Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.
Definition at line 964 of file lvecBase2.h.
LVecBase2f::iterator LVecBase2f::begin | ( | ) | [inline] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 530 of file lvecBase2.h.
LVecBase2f::const_iterator LVecBase2f::begin | ( | ) | const [inline] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 552 of file lvecBase2.h.
int LVecBase2f::compare_to | ( | const LVecBase2f & | other | ) | const [inline] |
This flavor of compare_to uses a default threshold value based on the numeric type.
Definition at line 721 of file lvecBase2.h.
int LVecBase2f::compare_to | ( | const LVecBase2f & | other, |
float | 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 736 of file lvecBase2.h.
LVecBase2f::iterator LVecBase2f::end | ( | ) | [inline] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 541 of file lvecBase2.h.
LVecBase2f::const_iterator LVecBase2f::end | ( | ) | const [inline] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 563 of file lvecBase2.h.
void LVecBase2f::fill | ( | float | 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 575 of file lvecBase2.h.
void LVecBase2f::generate_hash | ( | ChecksumHashGenerator & | hashgen | ) | const [inline] |
Adds the vector to the indicated hash generator.
Definition at line 986 of file lvecBase2.h.
void LVecBase2f::generate_hash | ( | ChecksumHashGenerator & | hashgen, |
float | threshold | ||
) | const [inline] |
Adds the vector to the indicated hash generator.
Definition at line 996 of file lvecBase2.h.
const float * LVecBase2f::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 509 of file lvecBase2.h.
size_t LVecBase2f::get_hash | ( | ) | const [inline] |
Returns a suitable hash for phash_map.
Definition at line 753 of file lvecBase2.h.
size_t LVecBase2f::get_hash | ( | float | threshold | ) | const [inline] |
Returns a suitable hash for phash_map.
Definition at line 764 of file lvecBase2.h.
int LVecBase2f::get_num_components | ( | ) | const [inline] |
Returns the number of elements in the vector, two.
Definition at line 519 of file lvecBase2.h.
bool LVecBase2f::is_nan | ( | ) | const [inline] |
Returns true if any component of the vector is not-a-number, false otherwise.
Definition at line 403 of file lvecBase2.h.
Referenced by CLerpNodePathInterval::set_end_tex_offset(), CLerpNodePathInterval::set_end_tex_scale(), Lens::set_keystone(), CLerpNodePathInterval::set_start_tex_offset(), and CLerpNodePathInterval::set_start_tex_scale().
float LVecBase2f::length | ( | ) | const [inline] |
Returns the length of the vector, by the Pythagorean theorem.
Definition at line 600 of file lvecBase2.h.
Referenced by FisheyeLens::do_extrude(), and CylindricalLens::do_project().
float LVecBase2f::length_squared | ( | ) | const [inline] |
Returns the square of the vector's length, cheap and easy.
Definition at line 616 of file lvecBase2.h.
bool LVecBase2f::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 633 of file lvecBase2.h.
Referenced by FisheyeLens::do_project(), and PSphereLens::do_project().
bool LVecBase2f::operator< | ( | const LVecBase2f & | 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 683 of file lvecBase2.h.
LVecBase2f LVecBase2f::project | ( | const LVecBase2f & | 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 in LPoint2f, and LVector2f.
Definition at line 669 of file lvecBase2.h.
void LVecBase2f::read_datagram | ( | DatagramIterator & | source | ) | [inline] |
Reads the vector from the Datagram using get_stdfloat().
Definition at line 1060 of file lvecBase2.h.
Referenced by CollisionPolygon::fillin(), CollisionBox::fillin(), and MouseRecorder::play_frame().
void LVecBase2f::read_datagram_fixed | ( | DatagramIterator & | source | ) | [inline] |
Reads the vector from the Datagram using get_float32() or get_float64().
Definition at line 1030 of file lvecBase2.h.
int LVecBase2f::size | ( | ) | [inline, static] |
Returns 2: the number of components of a LVecBase2.
Definition at line 392 of file lvecBase2.h.
const LVecBase2f & LVecBase2f::unit_x | ( | ) | [inline, static] |
Returns a unit X vector.
Reimplemented in LPoint2f, and LVector2f.
Definition at line 341 of file lvecBase2.h.
const LVecBase2f & LVecBase2f::unit_y | ( | ) | [inline, static] |
Returns a unit Y vector.
Reimplemented in LPoint2f, and LVector2f.
Definition at line 351 of file lvecBase2.h.
void LVecBase2f::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 1049 of file lvecBase2.h.
Referenced by MouseRecorder::record_frame().
void LVecBase2f::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 1013 of file lvecBase2.h.
const LVecBase2f & LVecBase2f::zero | ( | ) | [inline, static] |
Returns a zero-length vector.
Reimplemented in LPoint2f, and LVector2f.
Definition at line 331 of file lvecBase2.h.
Referenced by GeomVertexReader::get_data2f(), TransformState::get_pos2d(), TransformState::get_scale2d(), and NodePath::get_tex_offset().