floating point 4x4 array object More...

#include <geom.h>

Public Member Functions
template<class T , class U >
T	transformnormal (const U &in) const

template<class T , class U >
T	transform (const U &in) const

template<class T >
vec	perspectivetransform (const T &in) const

template<class T >
void	mult (const matrix4 &x, const matrix4 &y)

	matrix4 (const float *m)

	matrix4 (const vec &a, const vec &b, const vec &c=vec(0, 0, 1))

	matrix4 (const vec4< float > &a, const vec4< float > &b, const vec4< float > &c, const vec4< float > &d=vec4< float >(0, 0, 0, 1))

	matrix4 (const matrix4x3 &m)

	matrix4 (const matrix3 &rot, const vec &trans)

void	mul (const matrix4 &x, const matrix3 &y)

void	mul (const matrix3 &y)

void	mul (const matrix4 &x, const matrix4 &y)
	Sets this matrix to the product of the two matrices provided.

void	mul (const matrix4 &y)
	Sets this matrix to the product of this and another matrix.

void	muld (const matrix4 &x, const matrix4 &y)
	Sets this matrix to the product of the two matrices provided.

void	muld (const matrix4 &y)
	Sets this matrix to the product of this and another matrix.

void	rotate_around_x (float ck, float sk)

void	rotate_around_x (float angle)

void	rotate_around_x (const vec2 &sc)

void	rotate_around_y (float ck, float sk)

void	rotate_around_y (float angle)

void	rotate_around_y (const vec2 &sc)

void	rotate_around_z (float ck, float sk)

void	rotate_around_z (float angle)

void	rotate_around_z (const vec2 &sc)

void	rotate (float ck, float sk, const vec &axis)

void	rotate (float angle, const vec &dir)

void	rotate (const vec2 &sc, const vec &dir)

void	identity ()
	Sets the matrix to I, the identity matrix.

void	settranslation (const vec &v)

void	settranslation (float x, float y, float z)

void	translate (const vec &p)

void	translate (float x, float y, float z)

void	translate (const vec &p, float scale)

void	setscale (float x, float y, float z)

void	setscale (const vec &v)

void	setscale (float n)

void	scale (float x, float y, float z)

void	scale (const vec &v)

void	scale (float n)

void	scalez (float k)

void	jitter (float x, float y)

void	transpose ()
	Transposes the matrix along the diagonal.

void	transpose (const matrix4 &m)
	Copies the transpose of the given matrix4 to `this`

void	frustum (float left, float right, float bottom, float top, float znear, float zfar)

void	perspective (float fovy, float aspect, float znear, float zfar)

void	ortho (float left, float right, float bottom, float top, float znear, float zfar)

void	transform (const vec &in, vec &out) const

void	transform (const vec4< float > &in, vec &out) const

void	transform (const vec &in, vec4< float > &out) const

void	transform (const vec4< float > &in, vec4< float > &out) const

void	transformnormal (const vec &in, vec &out) const

void	transformnormal (const vec &in, vec4< float > &out) const

void	transposedtransform (const vec &in, vec &out) const

void	transposedtransformnormal (const vec &in, vec &out) const

void	transposedtransform (const plane &in, plane &out) const

vec	gettranslation () const

vec4< float >	rowx () const
	Returns the first row of the matrix.

vec4< float >	rowy () const
	Returns the second row of the matrix.

vec4< float >	rowz () const
	Returns the third row of the matrix.

vec4< float >	roww () const
	Returns the fourth row of the matrix.

bool	invert (const matrix4 &m, double mindet=1.0e-12)
	Sets this matrix to the inverse of the provided matrix.

matrix4	inverse (double mindet=1.0e-12) const
	Returns the inverse of the matrix.

vec2	lineardepthscale () const

Public Attributes
vec4< float >	a

vec4< float >	b

vec4< float >	c

vec4< float >	d

Detailed Description

floating point 4x4 array object

Member Function Documentation

◆ identity()

void matrix4::identity ( )

Sets the matrix to I, the identity matrix.

Sets the matrix to I, with the form as follows:

◆ inverse()

matrix4 matrix4::inverse ( double mindet = 1.0e-12 ) const

Returns the inverse of the matrix.

Returns a zero matrix if the matrix is singular.

Parameters

mindet the determinant value at which matrices are considered singular

Returns: a matrix4 containing the matrix inverse

◆ invert()

bool matrix4::invert	(	const matrix4 &	m,
		double	mindet = 1.0e-12 )

Sets this matrix to the inverse of the provided matrix.

Sets the matrix values to the inverse of the provided matrix A*A^-1 = I returns false if singular (or nearly singular to within tolerance of mindet) or true if matrix was inverted successfully

Parameters

m	a matrix4 object to be inverted and assigned to the object
mindet	the determinant value at which matrices are considered singular

Returns: false if the matrix is singular, true otherwise

◆ mul() [1/2]

void matrix4::mul	(	const matrix4 &	x,
		const matrix4 &	y )

Sets this matrix to the product of the two matrices provided.

The original contents of the matrix are disregarded. All calculations at single precision (float).

Parameters

x	the first matrix to multiply
y	the second matrix to multiply

◆ mul() [2/2]

void matrix4::mul ( const matrix4 & y )

Sets this matrix to the product of this and another matrix.

The original contents of the matrix are the left element in the product. All calculations at single precision (float).

Parameters

y	the second matrix to multiply

◆ muld() [1/2]

void matrix4::muld	(	const matrix4 &	x,
		const matrix4 &	y )

Sets this matrix to the product of the two matrices provided.

The original contents of the matrix are disregarded. Uses double precision to perform calculations, and is narrowed at the end to float.

Parameters

x	the first matrix to multiply
y	the second matrix to multiply

◆ muld() [2/2]

void matrix4::muld ( const matrix4 & y )

Sets this matrix to the product of this and another matrix.

The original contents of the matrix are the left element in the product. Uses double precision to perform calculations, and is narrowed at the end to float.

Parameters

y	the second matrix to multiply

◆ roww()

vec4< float > matrix4::roww ( ) const

Returns the fourth row of the matrix.

Returns the fourth value of each column vector that makes up the matrix.

Returns: a vec4 of the last row of the vector

◆ rowx()

vec4< float > matrix4::rowx ( ) const

Returns the first row of the matrix.

Returns the first value of each column vector that makes up the matrix.

Returns: a vec4 of the first row of the vector

◆ rowy()

vec4< float > matrix4::rowy ( ) const

Returns the second row of the matrix.

Returns the second value of each column vector that makes up the matrix.

Returns: a vec4 of the second row of the vector

◆ rowz()

vec4< float > matrix4::rowz ( ) const

Returns the third row of the matrix.

Returns the third value of each column vector that makes up the matrix.

Returns: a vec4 of the third row of the vector

◆ transpose() [1/2]

void matrix4::transpose ( )

Transposes the matrix along the diagonal.

Transforms the matrix like so (letters are just arbitrary value placeholders)

a b c d     a e i m
e f g h  -> b f j n
i j k l     c g k o
m n o p     d h l p

◆ transpose() [2/2]

void matrix4::transpose ( const matrix4 & m )

Copies the transpose of the given matrix4 to this

Copies the transform of the matrix passed like so (letters are just arbitrary value placeholders) to this object.

a b c d     a e i m
e f g h  -> b f j n
i j k l     c g k o
m n o p     d h l p

The documentation for this struct was generated from the following file:

/github/workspace/src/libprimis-headers/geom.h

Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation

◆ identity()

◆ inverse()

◆ invert()

◆ mul() [1/2]

◆ mul() [2/2]

◆ muld() [1/2]

◆ muld() [2/2]

◆ roww()

◆ rowx()

◆ rowy()

◆ rowz()

◆ transpose() [1/2]

◆ transpose() [2/2]