Panda3D
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This is the base class for all two-component vectors and points. More...
#include "lvecBase2.h"
Public Types | |
enum | { num_components = 2, is_int = 0 } |
typedef const float * | const_iterator |
typedef LSimpleMatrix< float, 1, 2 > | EVector2 |
typedef const float * | iterator |
typedef float | numeric_type |
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. 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) |
bool | almost_equal (const LVecBase2f &other, float threshold) const |
Returns true if two vectors are memberwise equal within a specified tolerance. More... | |
bool | almost_equal (const LVecBase2f &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 LVecBase2f &other) const |
This flavor of compare_to uses a default threshold value based on the numeric type. More... | |
int | compare_to (const LVecBase2f &other, float threshold) const |
Sorts vectors lexicographically, componentwise. More... | |
void | componentwise_mult (const LVecBase2f &other) |
float | dot (const LVecBase2f &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... | |
LVecBase2f | fmax (const LVecBase2f &other) const |
LVecBase2f | fmin (const LVecBase2f &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 two 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, two. More... | |
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. 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... | |
LVecBase2f | normalized () const |
Normalizes the vector and returns the normalized vector as a copy. More... | |
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. More... | |
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. 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) |
void | set_cell (int i, float value) |
void | set_x (float value) |
void | set_y (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 int | size () |
Returns 2: the number of components of a LVecBase2. More... | |
static const LVecBase2f & | unit_x () |
Returns a unit X vector. More... | |
static const LVecBase2f & | unit_y () |
Returns a unit Y vector. More... | |
static const LVecBase2f & | zero () |
Returns a zero-length vector. More... | |
Public Attributes | |
EVector2 | _v |
This is the base class for all two-component vectors and points.
Definition at line 105 of file lvecBase2.h.
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Adds the vector into the running hash.
Definition at line 803 of file lvecBase2.h.
References integer_hash< Key, Compare >::add_hash().
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Adds the vector into the running hash.
Definition at line 868 of file lvecBase2.h.
References floating_point_hash< Key >::add_hash().
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Returns true if two vectors are memberwise equal within a specified tolerance.
Definition at line 1078 of file lvecBase2.h.
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Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.
Definition at line 1091 of file lvecBase2.h.
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Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 562 of file lvecBase2.h.
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Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 584 of file lvecBase2.h.
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This flavor of compare_to uses a default threshold value based on the numeric type.
Definition at line 771 of file lvecBase2.h.
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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 840 of file lvecBase2.h.
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Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 573 of file lvecBase2.h.
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Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 595 of file lvecBase2.h.
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Sets each element of the vector to the indicated fill_value.
This is particularly useful for initializing to zero.
Definition at line 607 of file lvecBase2.h.
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Adds the vector to the indicated hash generator.
Definition at line 820 of file lvecBase2.h.
References ChecksumHashGenerator::add_int().
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Adds the vector to the indicated hash generator.
Definition at line 882 of file lvecBase2.h.
References ChecksumHashGenerator::add_fp().
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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 541 of file lvecBase2.h.
Referenced by Shader::get_language().
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Returns a suitable hash for phash_map.
Definition at line 792 of file lvecBase2.h.
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Returns a suitable hash for phash_map.
Definition at line 857 of file lvecBase2.h.
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Returns the number of elements in the vector, two.
Definition at line 551 of file lvecBase2.h.
Referenced by Shader::get_language().
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Returns true if any component of the vector is not-a-number, false otherwise.
Definition at line 431 of file lvecBase2.h.
Referenced by CollisionPolygon::get_test_pcollector(), Lens::is_orthographic(), CLerpNodePathInterval::set_end_tex_offset(), CLerpNodePathInterval::set_end_tex_scale(), Lens::set_keystone(), PfmFile::set_point2(), CLerpNodePathInterval::set_start_tex_offset(), and CLerpNodePathInterval::set_start_tex_scale().
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Returns the length of the vector, by the Pythagorean theorem.
Definition at line 664 of file lvecBase2.h.
Referenced by PolylightEffect::cull_callback(), CollisionBox::dist_to_polygon(), and CollisionPolygon::get_test_pcollector().
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Returns the square of the vector's length, cheap and easy.
Definition at line 647 of file lvecBase2.h.
Referenced by project(), LVecBase2d::project(), and LVecBase2i::project().
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Normalizes the vector in place.
Returns true if the vector was normalized, false if it was a zero-length vector.
Definition at line 681 of file lvecBase2.h.
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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 702 of file lvecBase2.h.
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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 733 of file lvecBase2.h.
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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 718 of file lvecBase2.h.
References length_squared().
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Reads the vector from the Datagram using get_stdfloat().
Definition at line 1177 of file lvecBase2.h.
References DatagramIterator::get_int32(), and DatagramIterator::get_stdfloat().
Referenced by CollisionPolygon::write_datagram(), and CollisionBox::write_datagram().
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Reads the vector from the Datagram using get_float32() or get_float64().
Definition at line 1139 of file lvecBase2.h.
References DatagramIterator::get_float32(), DatagramIterator::get_float64(), and DatagramIterator::get_int32().
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Returns 2: the number of components of a LVecBase2.
Definition at line 420 of file lvecBase2.h.
Referenced by CollisionPolygon::get_collision_origin().
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inlinestatic |
Returns a unit X vector.
Definition at line 369 of file lvecBase2.h.
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Returns a unit Y vector.
Definition at line 379 of file lvecBase2.h.
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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 1161 of file lvecBase2.h.
References Datagram::add_int32(), and Datagram::add_stdfloat().
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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 1119 of file lvecBase2.h.
References Datagram::add_float32(), Datagram::add_float64(), and Datagram::add_int32().
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inlinestatic |
Returns a zero-length vector.
Definition at line 359 of file lvecBase2.h.
Referenced by GeomVertexReader::get_data2f(), and NodePath::get_tex_offset().