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LMatrix3d Class Reference

This is a 3-by-3 transform matrix. More...

#include "lmatrix.h"

Classes

class  CRow
 
class  Row
 

Public Types

enum  { num_components = 9, is_int = 0 }
 
typedef const double * const_iterator
 
typedef LSimpleMatrix< double, 3, 3 > EMatrix3
 
typedef const double * iterator
 
typedef double numeric_type
 

Public Member Functions

 LMatrix3d (const LMatrix3d &other)
 
 LMatrix3d (double e00, double e01, double e02, double e10, double e11, double e12, double e20, double e21, double e22)
 
 LMatrix3d (const EMatrix3 &m)
 
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...
 
bool almost_equal (const LMatrix3d &other, double threshold) const
 Returns true if two matrices are memberwise equal within a specified tolerance. More...
 
bool almost_equal (const LMatrix3d &other) const
 Returns true if two matrices 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 LMatrix3d &other) const
 This flavor of compare_to uses a default threshold value based on the numeric type. More...
 
int compare_to (const LMatrix3d &other, double threshold) const
 Sorts matrices lexicographically, componentwise. More...
 
void componentwise_mult (const LMatrix3d &other)
 
double determinant () const
 Returns the determinant of the matrix. More...
 
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 matrix to the indicated fill_value. More...
 
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 row, int col) const
 Returns a particular element of the matrix. More...
 
LVecBase3d get_col (int col) const
 Returns the indicated column of the matrix as a three-component vector. More...
 
LVecBase2d get_col2 (int col) const
 Returns the indicated column of the matrix as a two-component vector, ignoring the last row. More...
 
const double * get_data () const
 Returns the address of the first of the nine data elements in the matrix. 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 matrix, nine. More...
 
LVecBase3d get_row (int row) const
 Returns the indicated row of the matrix as a three-component vector. More...
 
void get_row (LVecBase3d &result_vec, int row) const
 Stores the indicated row of the matrix as a three-component vector. More...
 
LVecBase2d get_row2 (int row) const
 Returns the indicated row of the matrix as a two-component vector, ignoring the last column. More...
 
bool invert_from (const LMatrix3d &other)
 Computes the inverse of the other matrix, and stores the result in this matrix. More...
 
bool invert_in_place ()
 Inverts the current matrix. More...
 
bool invert_transpose_from (const LMatrix3d &other)
 Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse. More...
 
bool invert_transpose_from (const LMatrix4d &other)
 Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse. More...
 
bool is_identity () const
 Returns true if this is (close enough to) the identity matrix, false otherwise. More...
 
bool is_nan () const
 Returns true if any component of the matrix is not-a-number, false otherwise. More...
 
 MAKE_SEQ (get_rows, size, get_row)
 
 MAKE_SEQ (get_cols, size, get_col)
 
 MAKE_SEQ (get_col2s, size, get_col2)
 
 MAKE_SEQ (get_row2s, size, get_row2)
 
void multiply (const LMatrix3d &other1, const LMatrix3d &other2)
 
bool operator!= (const LMatrix3d &other) const
 
double & operator() (int row, int col)
 
double operator() (int row, int col) const
 
LMatrix3d operator* (const LMatrix3d &other) const
 
LMatrix3d operator* (double scalar) const
 
LMatrix3doperator*= (const LMatrix3d &other)
 
LMatrix3doperator*= (double scalar)
 Performs a memberwise scale. More...
 
LMatrix3doperator+= (const LMatrix3d &other)
 Performs a memberwise addition between two matrices. More...
 
LMatrix3doperator-= (const LMatrix3d &other)
 Performs a memberwise subtraction between two matrices. More...
 
LMatrix3d operator/ (double scalar) const
 
LMatrix3doperator/= (double scalar)
 Performs a memberwise scale. More...
 
bool operator< (const LMatrix3d &other) const
 This performs a lexicographical comparison. More...
 
LMatrix3doperator= (const LMatrix3d &other)
 
LMatrix3doperator= (double fill_value)
 
bool operator== (const LMatrix3d &other) const
 
CRow operator[] (int i) const
 
Row operator[] (int i)
 
void output (ostream &out) const
 
void read_datagram (DatagramIterator &source)
 Reads the matrix from the Datagram using get_stdfloat(). More...
 
void read_datagram_fixed (DatagramIterator &scan)
 Reads the matrix from the Datagram using get_float32() or get_float64(). More...
 
void set (double e00, double e01, double e02, double e10, double e11, double e12, double e20, double e21, double e22)
 
void set_cell (int row, int col, double value)
 Changes a particular element of the matrix. More...
 
void set_col (int col, const LVecBase3d &v)
 Replaces the indicated column of the matrix from a three-component vector. More...
 
void set_col (int col, const LVecBase2d &v)
 Replaces the indicated column of the matrix from a two-component vector, ignoring the last row. More...
 
void set_rotate_mat (double angle)
 Fills mat with a matrix that rotates by the given angle in degrees counterclockwise. More...
 
void set_rotate_mat (double angle, const LVecBase3d &axis, CoordinateSystem cs=CS_default)
 Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. More...
 
void set_rotate_mat_normaxis (double angle, const LVecBase3d &axis, CoordinateSystem cs=CS_default)
 Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. More...
 
void set_row (int row, const LVecBase3d &v)
 Replaces the indicated row of the matrix from a three-component vector. More...
 
void set_row (int row, const LVecBase2d &v)
 Replaces the indicated row of the matrix from a two-component vector, ignoring the last column. More...
 
void set_scale_mat (const LVecBase2d &scale)
 Fills mat with a matrix that applies the indicated scale in each of the two axes. More...
 
void set_scale_mat (const LVecBase3d &scale)
 Fills mat with a matrix that applies the indicated scale in each of the three axes. More...
 
void set_scale_shear_mat (const LVecBase3d &scale, const LVecBase3d &shear, CoordinateSystem cs=CS_default)
 Fills mat with a matrix that applies the indicated scale and shear. More...
 
void set_shear_mat (const LVecBase3d &shear, CoordinateSystem cs=CS_default)
 Fills mat with a matrix that applies the indicated shear in each of the three planes. More...
 
void set_translate_mat (const LVecBase2d &trans)
 Fills mat with a matrix that applies the indicated translation. More...
 
void transpose_from (const LMatrix3d &other)
 
void transpose_in_place ()
 
void write (ostream &out, int indent_level=0) const
 
void write_datagram (Datagram &destination) const
 Writes the matrix to the Datagram using add_stdfloat(). More...
 
void write_datagram_fixed (Datagram &destination) const
 Writes the matrix to the Datagram using add_float32() or add_float64(), depending on the type of floats in the matrix, regardless of the setting of Datagram::set_stdfloat_double(). More...
 
LVecBase3d xform (const LVecBase3d &v) const
 3-component vector or point times matrix. More...
 
void xform_in_place (LVecBase3d &v) const
 3-component vector or point times matrix. More...
 
LVecBase2d xform_point (const LVecBase2d &v) const
 The matrix transforms a 2-component point (including translation component) and returns the result. More...
 
void xform_point_in_place (LVecBase2d &v) const
 The matrix transforms a 2-component point (including translation component). More...
 
LVecBase2d xform_vec (const LVecBase2d &v) const
 The matrix transforms a 2-component vector (without translation component) and returns the result. More...
 
LVecBase3d xform_vec (const LVecBase3d &v) const
 The matrix transforms a 3-component vector and returns the result. More...
 
LVecBase3d xform_vec_general (const LVecBase3d &v) const
 The matrix transforms a 3-component vector (without translation component) and returns the result, as a fully general operation. More...
 
void xform_vec_general_in_place (LVecBase3d &v) const
 The matrix transforms a 3-component vector (without translation component), as a fully general operation. More...
 
void xform_vec_in_place (LVecBase2d &v) const
 The matrix transforms a 2-component vector (without translation component). More...
 
void xform_vec_in_place (LVecBase3d &v) const
 The matrix transforms a 3-component vector. More...
 

Static Public Member Functions

static const LMatrix3dconvert_mat (CoordinateSystem from, CoordinateSystem to)
 Returns a matrix that transforms from the indicated coordinate system to the indicated coordinate system. More...
 
static TypeHandle get_class_type ()
 
static const LMatrix3dident_mat ()
 Returns an identity matrix. More...
 
static void init_type ()
 
static LMatrix3d rotate_mat (double angle)
 Returns a matrix that rotates by the given angle in degrees counterclockwise. More...
 
static LMatrix3d rotate_mat (double angle, const LVecBase3d &axis, CoordinateSystem cs=CS_default)
 Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. More...
 
static LMatrix3d rotate_mat_normaxis (double angle, const LVecBase3d &axis, CoordinateSystem cs=CS_default)
 Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. More...
 
static LMatrix3d scale_mat (const LVecBase2d &scale)
 Returns a matrix that applies the indicated scale in each of the two axes. More...
 
static LMatrix3d scale_mat (double sx, double sy)
 Returns a matrix that applies the indicated scale in each of the two axes. More...
 
static LMatrix3d scale_mat (const LVecBase3d &scale)
 Returns a matrix that applies the indicated scale in each of the three axes. More...
 
static LMatrix3d scale_mat (double sx, double sy, double sz)
 Returns a matrix that applies the indicated scale in each of the three axes. More...
 
static LMatrix3d scale_shear_mat (const LVecBase3d &scale, const LVecBase3d &shear, CoordinateSystem cs=CS_default)
 Returns a matrix that applies the indicated scale and shear. More...
 
static LMatrix3d scale_shear_mat (double sx, double sy, double sz, double shxy, double shxz, double shyz, CoordinateSystem cs=CS_default)
 Returns a matrix that applies the indicated scale and shear. More...
 
static LMatrix3d shear_mat (const LVecBase3d &shear, CoordinateSystem cs=CS_default)
 Returns a matrix that applies the indicated shear in each of the three planes. More...
 
static LMatrix3d shear_mat (double shxy, double shxz, double shyz, CoordinateSystem cs=CS_default)
 Returns a matrix that applies the indicated shear in each of the three planes. More...
 
static int size ()
 Returns 3: the number of rows of a LMatrix3. More...
 
static LMatrix3d translate_mat (const LVecBase2d &trans)
 Returns a matrix that applies the indicated translation. More...
 
static LMatrix3d translate_mat (double tx, double ty)
 Returns a matrix that applies the indicated translation. More...
 

Public Attributes

EMatrix3 _m
 

Detailed Description

This is a 3-by-3 transform matrix.

It typically will represent either a rotation-and-scale (no translation) matrix in 3-d, or a full affine matrix (rotation, scale, translation) in 2-d, e.g. for a texture matrix.

Definition at line 4375 of file lmatrix.h.

Member Function Documentation

◆ add_hash() [1/2]

size_t LMatrix3d::add_hash ( size_t  hash) const
inline

Adds the vector into the running hash.

Definition at line 7590 of file lmatrix.h.

◆ add_hash() [2/2]

size_t LMatrix3d::add_hash ( size_t  hash,
double  threshold 
) const
inline

Adds the vector into the running hash.

Definition at line 7600 of file lmatrix.h.

References floating_point_hash< Key >::add_hash().

◆ almost_equal() [1/2]

bool LMatrix3d::almost_equal ( const LMatrix3d other,
double  threshold 
) const

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

Definition at line 1598 of file lmatrix.cxx.

Referenced by MayaToEggConverter::clear(), SoftToEggConverter::FindClosestTriVert(), and TextureReference::is_equivalent().

◆ almost_equal() [2/2]

bool LMatrix3d::almost_equal ( const LMatrix3d other) const
inline

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

Definition at line 8522 of file lmatrix.h.

◆ begin() [1/2]

LMatrix3d::iterator LMatrix3d::begin ( )
inline

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

Definition at line 7482 of file lmatrix.h.

◆ begin() [2/2]

LMatrix3d::const_iterator LMatrix3d::begin ( ) const
inline

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

Definition at line 7504 of file lmatrix.h.

◆ compare_to() [1/2]

int LMatrix3d::compare_to ( const LMatrix3d other) const
inline

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

Definition at line 7560 of file lmatrix.h.

◆ compare_to() [2/2]

int LMatrix3d::compare_to ( const LMatrix3d other,
double  threshold 
) const

Sorts matrices lexicographically, componentwise.

Returns a number less than 0 if this matrix sorts before the other one, greater than zero if it sorts after, 0 if they are equivalent (within the indicated tolerance).

Definition at line 1466 of file lmatrix.cxx.

◆ convert_mat()

const LMatrix3d & LMatrix3d::convert_mat ( CoordinateSystem  from,
CoordinateSystem  to 
)
static

Returns a matrix that transforms from the indicated coordinate system to the indicated coordinate system.

Definition at line 1379 of file lmatrix.cxx.

◆ determinant()

double LMatrix3d::determinant ( ) const
inline

Returns the determinant of the matrix.

Definition at line 8064 of file lmatrix.h.

◆ end() [1/2]

LMatrix3d::iterator LMatrix3d::end ( )
inline

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

Definition at line 7493 of file lmatrix.h.

◆ end() [2/2]

LMatrix3d::const_iterator LMatrix3d::end ( ) const
inline

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

Definition at line 7515 of file lmatrix.h.

◆ fill()

void LMatrix3d::fill ( double  fill_value)

Sets each element of the matrix to the indicated fill_value.

This is of questionable value, but is sometimes useful when initializing to zero.

Definition at line 1445 of file lmatrix.cxx.

◆ generate_hash() [1/2]

void LMatrix3d::generate_hash ( ChecksumHashGenerator hashgen) const
inline

Adds the vector to the indicated hash generator.

Definition at line 8532 of file lmatrix.h.

◆ generate_hash() [2/2]

void LMatrix3d::generate_hash ( ChecksumHashGenerator hashgen,
double  threshold 
) const

Adds the vector to the indicated hash generator.

Definition at line 1667 of file lmatrix.cxx.

References ChecksumHashGenerator::add_fp().

◆ get_cell()

double LMatrix3d::get_cell ( int  row,
int  col 
) const
inline

Returns a particular element of the matrix.

Definition at line 7437 of file lmatrix.h.

◆ get_col()

LVecBase3d LMatrix3d::get_col ( int  col) const
inline

Returns the indicated column of the matrix as a three-component vector.

Definition at line 7321 of file lmatrix.h.

◆ get_col2()

LVecBase2d LMatrix3d::get_col2 ( int  col) const
inline

Returns the indicated column of the matrix as a two-component vector, ignoring the last row.

Definition at line 7347 of file lmatrix.h.

◆ get_data()

const double * LMatrix3d::get_data ( ) const
inline

Returns the address of the first of the nine data elements in the matrix.

The remaining elements occupy the next eight positions in row-major order.

Definition at line 7461 of file lmatrix.h.

Referenced by Shader::get_language().

◆ get_hash() [1/2]

size_t LMatrix3d::get_hash ( ) const
inline

Returns a suitable hash for phash_map.

Definition at line 7570 of file lmatrix.h.

◆ get_hash() [2/2]

size_t LMatrix3d::get_hash ( double  threshold) const
inline

Returns a suitable hash for phash_map.

Definition at line 7580 of file lmatrix.h.

◆ get_num_components()

int LMatrix3d::get_num_components ( ) const
inline

Returns the number of elements in the matrix, nine.

Definition at line 7471 of file lmatrix.h.

Referenced by Shader::get_language().

◆ get_row() [1/2]

LVecBase3d LMatrix3d::get_row ( int  row) const
inline

Returns the indicated row of the matrix as a three-component vector.

Definition at line 7289 of file lmatrix.h.

Referenced by GeomVertexWriter::add_matrix3d(), and GeomVertexWriter::set_matrix3d().

◆ get_row() [2/2]

void LMatrix3d::get_row ( LVecBase3d result_vec,
int  row 
) const
inline

Stores the indicated row of the matrix as a three-component vector.

Definition at line 7304 of file lmatrix.h.

◆ get_row2()

LVecBase2d LMatrix3d::get_row2 ( int  row) const
inline

Returns the indicated row of the matrix as a two-component vector, ignoring the last column.

Definition at line 7336 of file lmatrix.h.

◆ ident_mat()

const LMatrix3d & LMatrix3d::ident_mat ( )
inlinestatic

Returns an identity matrix.

This function definition must appear first, since some inline functions below take advantage of it.

Definition at line 7128 of file lmatrix.h.

Referenced by MayaToEggConverter::clear(), TexturePlacement::compute_tex_matrix(), TextureReference::from_egg(), EggTransform::get_component_mat3(), GeomVertexReader::get_matrix3d(), and EggTransform::get_transform2d().

◆ invert_from()

bool LMatrix3d::invert_from ( const LMatrix3d other)
inline

Computes the inverse of the other matrix, and stores the result in this matrix.

This is a fully general operation and makes no assumptions about the type of transform represented by the matrix.

The other matrix must be a different object than this matrix. However, if you need to invert a matrix in place, see invert_in_place.

The return value is true if the matrix was successfully inverted, false if there was a singularity.

Definition at line 8091 of file lmatrix.h.

Referenced by TextureReference::from_egg().

◆ invert_in_place()

bool LMatrix3d::invert_in_place ( )
inline

Inverts the current matrix.

Returns true if the inverse is successful, false if the matrix was singular.

Definition at line 8150 of file lmatrix.h.

◆ invert_transpose_from() [1/2]

bool LMatrix3d::invert_transpose_from ( const LMatrix3d other)
inline

Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse.

Definition at line 8163 of file lmatrix.h.

◆ invert_transpose_from() [2/2]

bool LMatrix3d::invert_transpose_from ( const LMatrix4d other)
inline

Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse.

Definition at line 8220 of file lmatrix.h.

◆ is_identity()

bool LMatrix3d::is_identity ( ) const
inline

Returns true if this is (close enough to) the identity matrix, false otherwise.

Definition at line 7427 of file lmatrix.h.

◆ is_nan()

bool LMatrix3d::is_nan ( ) const
inline

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

Definition at line 7412 of file lmatrix.h.

◆ operator*=()

LMatrix3d & LMatrix3d::operator*= ( double  scalar)
inline

Performs a memberwise scale.

Definition at line 7948 of file lmatrix.h.

◆ operator+=()

LMatrix3d & LMatrix3d::operator+= ( const LMatrix3d other)
inline

Performs a memberwise addition between two matrices.

Definition at line 7888 of file lmatrix.h.

◆ operator-=()

LMatrix3d & LMatrix3d::operator-= ( const LMatrix3d other)
inline

Performs a memberwise subtraction between two matrices.

Definition at line 7911 of file lmatrix.h.

◆ operator/=()

LMatrix3d & LMatrix3d::operator/= ( double  scalar)
inline

Performs a memberwise scale.

Definition at line 7971 of file lmatrix.h.

◆ operator<()

bool LMatrix3d::operator< ( const LMatrix3d 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 7529 of file lmatrix.h.

◆ read_datagram()

void LMatrix3d::read_datagram ( DatagramIterator source)

Reads the matrix from the Datagram using get_stdfloat().

Definition at line 1742 of file lmatrix.cxx.

References DatagramIterator::get_stdfloat(), and TypeHandle::none().

Referenced by TextureReference::complete_pointers().

◆ read_datagram_fixed()

void LMatrix3d::read_datagram_fixed ( DatagramIterator scan)

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

See write_datagram_fixed().

Definition at line 1707 of file lmatrix.cxx.

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

◆ rotate_mat() [1/2]

LMatrix3d LMatrix3d::rotate_mat ( double  angle)
inlinestatic

Returns a matrix that rotates by the given angle in degrees counterclockwise.

Definition at line 8346 of file lmatrix.h.

References LMatrix4f::set_rotate_mat().

Referenced by MayaShaderColorDef::compute_texture_matrix(), and PerlinNoise2::noise().

◆ rotate_mat() [2/2]

LMatrix3d LMatrix3d::rotate_mat ( double  angle,
const LVecBase3d axis,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.

Definition at line 8385 of file lmatrix.h.

References LMatrix4f::set_rotate_mat().

◆ rotate_mat_normaxis()

LMatrix3d LMatrix3d::rotate_mat_normaxis ( double  angle,
const LVecBase3d axis,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.

Assumes axis has been normalized.

Definition at line 8400 of file lmatrix.h.

References LMatrix4f::set_rotate_mat_normaxis().

◆ scale_mat() [1/4]

LMatrix3d LMatrix3d::scale_mat ( const LVecBase2d scale)
inlinestatic

Returns a matrix that applies the indicated scale in each of the two axes.

Definition at line 8359 of file lmatrix.h.

Referenced by TexturePlacement::compute_tex_matrix(), MayaShaderColorDef::compute_texture_matrix(), and PerlinNoise2::set_scale().

◆ scale_mat() [2/4]

LMatrix3d LMatrix3d::scale_mat ( double  sx,
double  sy 
)
inlinestatic

Returns a matrix that applies the indicated scale in each of the two axes.

Definition at line 8372 of file lmatrix.h.

◆ scale_mat() [3/4]

LMatrix3d LMatrix3d::scale_mat ( const LVecBase3d scale)
inlinestatic

Returns a matrix that applies the indicated scale in each of the three axes.

Definition at line 8427 of file lmatrix.h.

◆ scale_mat() [4/4]

LMatrix3d LMatrix3d::scale_mat ( double  sx,
double  sy,
double  sz 
)
inlinestatic

Returns a matrix that applies the indicated scale in each of the three axes.

Definition at line 8440 of file lmatrix.h.

◆ scale_shear_mat() [1/2]

LMatrix3d LMatrix3d::scale_shear_mat ( const LVecBase3d scale,
const LVecBase3d shear,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that applies the indicated scale and shear.

Definition at line 8491 of file lmatrix.h.

References LMatrix4f::set_scale_shear_mat().

◆ scale_shear_mat() [2/2]

LMatrix3d LMatrix3d::scale_shear_mat ( double  sx,
double  sy,
double  sz,
double  shxy,
double  shxz,
double  shyz,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that applies the indicated scale and shear.

Definition at line 8506 of file lmatrix.h.

References LMatrix4f::set_scale_shear_mat().

◆ set_cell()

void LMatrix3d::set_cell ( int  row,
int  col,
double  value 
)
inline

Changes a particular element of the matrix.

Definition at line 7448 of file lmatrix.h.

◆ set_col() [1/2]

void LMatrix3d::set_col ( int  col,
const LVecBase3d v 
)
inline

Replaces the indicated column of the matrix from a three-component vector.

Definition at line 7240 of file lmatrix.h.

◆ set_col() [2/2]

void LMatrix3d::set_col ( int  col,
const LVecBase2d v 
)
inline

Replaces the indicated column of the matrix from a two-component vector, ignoring the last row.

Definition at line 7273 of file lmatrix.h.

◆ set_rotate_mat() [1/2]

void LMatrix3d::set_rotate_mat ( double  angle)
inline

Fills mat with a matrix that rotates by the given angle in degrees counterclockwise.

Definition at line 8290 of file lmatrix.h.

◆ set_rotate_mat() [2/2]

void LMatrix3d::set_rotate_mat ( double  angle,
const LVecBase3d axis,
CoordinateSystem  cs = CS_default 
)

Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.

Definition at line 1486 of file lmatrix.cxx.

◆ set_rotate_mat_normaxis()

void LMatrix3d::set_rotate_mat_normaxis ( double  angle,
const LVecBase3d axis,
CoordinateSystem  cs = CS_default 
)

Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.

Assumes axis has been normalized.

Definition at line 1547 of file lmatrix.cxx.

◆ set_row() [1/2]

void LMatrix3d::set_row ( int  row,
const LVecBase3d v 
)
inline

Replaces the indicated row of the matrix from a three-component vector.

Definition at line 7223 of file lmatrix.h.

Referenced by GeomVertexReader::get_matrix3d(), and PerlinNoise2::noise().

◆ set_row() [2/2]

void LMatrix3d::set_row ( int  row,
const LVecBase2d v 
)
inline

Replaces the indicated row of the matrix from a two-component vector, ignoring the last column.

Definition at line 7257 of file lmatrix.h.

◆ set_scale_mat() [1/2]

void LMatrix3d::set_scale_mat ( const LVecBase2d scale)
inline

Fills mat with a matrix that applies the indicated scale in each of the two axes.

Definition at line 8307 of file lmatrix.h.

◆ set_scale_mat() [2/2]

void LMatrix3d::set_scale_mat ( const LVecBase3d scale)
inline

Fills mat with a matrix that applies the indicated scale in each of the three axes.

Definition at line 8414 of file lmatrix.h.

◆ set_scale_shear_mat()

void LMatrix3d::set_scale_shear_mat ( const LVecBase3d scale,
const LVecBase3d shear,
CoordinateSystem  cs = CS_default 
)

Fills mat with a matrix that applies the indicated scale and shear.

Definition at line 1300 of file lmatrix.cxx.

◆ set_shear_mat()

void LMatrix3d::set_shear_mat ( const LVecBase3d shear,
CoordinateSystem  cs = CS_default 
)
inline

Fills mat with a matrix that applies the indicated shear in each of the three planes.

Definition at line 8453 of file lmatrix.h.

◆ set_translate_mat()

void LMatrix3d::set_translate_mat ( const LVecBase2d trans)
inline

Fills mat with a matrix that applies the indicated translation.

Definition at line 8277 of file lmatrix.h.

◆ shear_mat() [1/2]

LMatrix3d LMatrix3d::shear_mat ( const LVecBase3d shear,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that applies the indicated shear in each of the three planes.

Definition at line 8465 of file lmatrix.h.

References LMatrix4f::set_shear_mat().

◆ shear_mat() [2/2]

LMatrix3d LMatrix3d::shear_mat ( double  shxy,
double  shxz,
double  shyz,
CoordinateSystem  cs = CS_default 
)
inlinestatic

Returns a matrix that applies the indicated shear in each of the three planes.

Definition at line 8478 of file lmatrix.h.

References LMatrix4f::set_shear_mat().

◆ size()

int LMatrix3d::size ( )
inlinestatic

Returns 3: the number of rows of a LMatrix3.

Definition at line 7401 of file lmatrix.h.

◆ translate_mat() [1/2]

LMatrix3d LMatrix3d::translate_mat ( const LVecBase2d trans)
inlinestatic

Returns a matrix that applies the indicated translation.

Definition at line 8320 of file lmatrix.h.

Referenced by TexturePlacement::compute_tex_matrix(), and MayaShaderColorDef::compute_texture_matrix().

◆ translate_mat() [2/2]

LMatrix3d LMatrix3d::translate_mat ( double  tx,
double  ty 
)
inlinestatic

Returns a matrix that applies the indicated translation.

Definition at line 8333 of file lmatrix.h.

◆ write_datagram()

void LMatrix3d::write_datagram ( Datagram destination) const

Writes the matrix to the Datagram using add_stdfloat().

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

Definition at line 1728 of file lmatrix.cxx.

References Datagram::add_stdfloat().

Referenced by TextureReference::write_datagram().

◆ write_datagram_fixed()

void LMatrix3d::write_datagram_fixed ( Datagram destination) const

Writes the matrix to the Datagram using add_float32() or add_float64(), depending on the type of floats in the matrix, 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 1688 of file lmatrix.cxx.

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

◆ xform()

LVecBase3d LMatrix3d::xform ( const LVecBase3d v) const
inline

3-component vector or point times matrix.

Definition at line 7630 of file lmatrix.h.

◆ xform_in_place()

void LMatrix3d::xform_in_place ( LVecBase3d v) const
inline

3-component vector or point times matrix.

Definition at line 7732 of file lmatrix.h.

◆ xform_point()

LVecBase2d LMatrix3d::xform_point ( const LVecBase2d v) const
inline

The matrix transforms a 2-component point (including translation component) and returns the result.

This assumes the matrix is an affine transform.

Definition at line 7650 of file lmatrix.h.

Referenced by PerlinNoise2::noise().

◆ xform_point_in_place()

void LMatrix3d::xform_point_in_place ( LVecBase2d v) const
inline

The matrix transforms a 2-component point (including translation component).

This assumes the matrix is an affine transform.

Definition at line 7749 of file lmatrix.h.

◆ xform_vec() [1/2]

LVecBase2d LMatrix3d::xform_vec ( const LVecBase2d v) const
inline

The matrix transforms a 2-component vector (without translation component) and returns the result.

This assumes the matrix is an affine transform.

Definition at line 7674 of file lmatrix.h.

◆ xform_vec() [2/2]

LVecBase3d LMatrix3d::xform_vec ( const LVecBase3d v) const
inline

The matrix transforms a 3-component vector and returns the result.

This assumes the matrix is an orthonormal transform.

In practice, this is the same computation as xform().

Definition at line 7701 of file lmatrix.h.

◆ xform_vec_general()

LVecBase3d LMatrix3d::xform_vec_general ( const LVecBase3d v) const
inline

The matrix transforms a 3-component vector (without translation component) and returns the result, as a fully general operation.

Definition at line 7714 of file lmatrix.h.

◆ xform_vec_general_in_place()

void LMatrix3d::xform_vec_general_in_place ( LVecBase3d v) const
inline

The matrix transforms a 3-component vector (without translation component), as a fully general operation.

Definition at line 7800 of file lmatrix.h.

◆ xform_vec_in_place() [1/2]

void LMatrix3d::xform_vec_in_place ( LVecBase2d v) const
inline

The matrix transforms a 2-component vector (without translation component).

This assumes the matrix is an affine transform.

Definition at line 7768 of file lmatrix.h.

◆ xform_vec_in_place() [2/2]

void LMatrix3d::xform_vec_in_place ( LVecBase3d v) const
inline

The matrix transforms a 3-component vector.

This assumes the matrix is an orthonormal transform.

In practice, this is the same computation as xform().

Definition at line 7788 of file lmatrix.h.


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