Matrix

#include <Ultralight/Matrix.h>

Overview

Transformation Matrix helper.

Public Types
typedef double	Aligned4x4[4][4]

Public Member Functions
void	SetIdentity ()
	Set to identity matrix.
void	SetOrthographicProjection (double screen_width, double screen_height, bool flip_y)
	Set to an orthographic projection matrix suitable for use with our vertex shaders.
void	Set (const Matrix &other)
	Set to another matrix.
void	Set (const Matrix4x4 &other)
	Set to another matrix.
void	Set (double a, double b, double c, double d, double e, double f)
	Set from raw affine members.
void	Set (double m11, double m12, double m13, double m14, double m21, double m22, double m23, double m24, double m31, double m32, double m33, double m34, double m41, double m42, double m43, double m44)
	Set from raw 4x4 components.
double	m11 () const
double	m12 () const
double	m13 () const
double	m14 () const
double	m21 () const
double	m22 () const
double	m23 () const
double	m24 () const
double	m31 () const
double	m32 () const
double	m33 () const
double	m34 () const
double	m41 () const
double	m42 () const
double	m43 () const
double	m44 () const
double	a () const
double	b () const
double	c () const
double	d () const
double	e () const
double	f () const
bool	IsIdentity () const
	Whether or not this is an identity matrix.
bool	IsIdentityOrTranslation () const
	Whether or not this is an identity matrix or translation.
bool	IsAffine () const
	Whether or not this matrix uses only affine transformations.
bool	IsSimple () const
	Whether or not this is an identity, translation, or non-negative uniform scale.
void	Translate (double x, double y)
	Translate by x and y.
void	Scale (double x, double y)
	Scale by x and y.
void	Rotate (double theta)
	Rotate matrix by theta (in degrees)
void	Rotate (double x, double y)
	Rotate matrix by x and y.
void	Transform (const Matrix &other)
	Transform (multiply) by another Matrix.
bool	GetInverse (Matrix &result) const
	Get the inverse of this matrix.
Point	Apply (const Point &p) const
	Transform point by this matrix and get the result.
Rect	Apply (const Rect &r) const
	Transform rect by this matrix and get the result as an axis-aligned rect.
uint32_t	Hash () const
	Get an integer hash of this matrix's members.
Matrix4x4	GetMatrix4x4 () const
	Get this matrix as unaligned 4x4 float components (for use passing to GPU driver APIs).

Public Attributes
Aligned4x4	data
	Raw matrix data in column-major order (eg, data[column][row])

Member Typedef Documentation

Aligned4x4

typedef double Aligned4x4[4][4]

Member Function Documentation

a()

double a ( ) const

inline

Apply() [1/2]

Point Apply

(

const Point &

p

)

const

Transform point by this matrix and get the result.

Apply() [2/2]

Rect Apply

(

const Rect &

r

)

const

Transform rect by this matrix and get the result as an axis-aligned rect.

b()

double b ( ) const

inline

c()

double c ( ) const

inline

d()

double d ( ) const

inline

e()

double e ( ) const

inline

f()

double f ( ) const

inline

GetInverse()

bool GetInverse

(

Matrix &

result

)

const

Get the inverse of this matrix.

May return false if not invertible.

GetMatrix4x4()

Matrix4x4 GetMatrix4x4

(

)

const

Get this matrix as unaligned 4x4 float components (for use passing to GPU driver APIs).

Hash()

uint32_t Hash

(

)

const

Get an integer hash of this matrix's members.

IsAffine()

bool IsAffine

(

)

const

Whether or not this matrix uses only affine transformations.

IsIdentity()

bool IsIdentity

(

)

const

Whether or not this is an identity matrix.

IsIdentityOrTranslation()

bool IsIdentityOrTranslation

(

)

const

Whether or not this is an identity matrix or translation.

IsSimple()

bool IsSimple

(

)

const

Whether or not this is an identity, translation, or non-negative uniform scale.

m11()

double m11 ( ) const

inline

m12()

double m12 ( ) const

inline

m13()

double m13 ( ) const

inline

m14()

double m14 ( ) const

inline

m21()

double m21 ( ) const

inline

m22()

double m22 ( ) const

inline

m23()

double m23 ( ) const

inline

m24()

double m24 ( ) const

inline

m31()

double m31 ( ) const

inline

m32()

double m32 ( ) const

inline

m33()

double m33 ( ) const

inline

m34()

double m34 ( ) const

inline

m41()

double m41 ( ) const

inline

m42()

double m42 ( ) const

inline

m43()

double m43 ( ) const

inline

m44()

double m44 ( ) const

inline

Rotate() [1/2]

void Rotate

(

double

theta

)

Rotate matrix by theta (in degrees)

Rotate() [2/2]

void Rotate	(	double	x,
		double	y )

Rotate matrix by x and y.

Scale()

void Scale	(	double	x,
		double	y )

Scale by x and y.

Set() [1/4]

void Set

(

const Matrix &

other

)

Set to another matrix.

Set() [2/4]

void Set

(

const Matrix4x4 &

other

)

Set to another matrix.

Set() [3/4]

void Set	(	double	a,
		double	b,
		double	c,
		double	d,
		double	e,
		double	f )

Set from raw affine members.

Set() [4/4]

void Set	(	double	m11,
		double	m12,
		double	m13,
		double	m14,
		double	m21,
		double	m22,
		double	m23,
		double	m24,
		double	m31,
		double	m32,
		double	m33,
		double	m34,
		double	m41,
		double	m42,
		double	m43,
		double	m44 )

Set from raw 4x4 components.

SetIdentity()

void SetIdentity

(

)

Set to identity matrix.

SetOrthographicProjection()

void SetOrthographicProjection	(	double	screen_width,
		double	screen_height,
		bool	flip_y )

Set to an orthographic projection matrix suitable for use with our vertex shaders.

Optionally flip the y-coordinate space (eg, for OpenGL).

Transform()

void Transform

(

const Matrix &

other

)

Transform (multiply) by another Matrix.

Translate()

void Translate	(	double	x,
		double	y )

Translate by x and y.

Member Data Documentation

data

Aligned4x4 data

Raw matrix data in column-major order (eg, data[column][row])

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

• Ultralight/Matrix.h