Mat3 Class Reference

3x3 matrix More...

#include <jngl/Mat3.hpp>

Public Member Functions
	Mat3 ()=default
	creates identity matrix
	Mat3 (std::initializer_list< float >)
	construct matrix from row-major array with 9 elements
Mat3 &	translate (const Vec2 &v)
	Multiplies the matrix with a translation matrix generated from v.
Mat3 &	translate (Pixels x, Pixels y)
	Multiplies the matrix with a translation matrix generated from (x,y)
Mat3 &	scale (float factor)
	Multiplies the matrix by a scaling matrix.
Mat3 &	scale (float xfactor, float yfactor)
	Multiplies the matrix by a scaling matrix.
Mat3 &	rotate (float radian)
	Multiplies the matrix with a rotation matrix.

Public Attributes
float	data [9] = { 1, 0, 0, 0, 1, 0, 0, 0, 1 }
	column-major

Detailed Description

3x3 matrix

identical to boost::qvm::mat<float, 3, 3>, but stores the elements column-major in memory

Definition at line 18 of file Mat3.hpp.

Constructor & Destructor Documentation

Mat3() [1/2]

Mat3 ( )

default

creates identity matrix

Mat3() [2/2]

Mat3

(

std::initializer_list< float >

)

construct matrix from row-major array with 9 elements

jngl::Mat3({ 1, 2, 3, 4, 5, 6, 7, 8, 9 }) is equivalent to:

Member Function Documentation

translate() [1/2]

Mat3 & translate

(

const Vec2 &

v

)

Multiplies the matrix with a translation matrix generated from v.

Returns

*this

translate() [2/2]

Mat3 & translate	(	Pixels	x,
		Pixels	y )

Multiplies the matrix with a translation matrix generated from (x,y)

Returns

*this

scale() [1/2]

Mat3 & scale

(

float

factor

)

Multiplies the matrix by a scaling matrix.

Equivalent to calling Mat3::scale(factor, factor).

Returns

*this

scale() [2/2]

Mat3 & scale	(	float	xfactor,
		float	yfactor )

Multiplies the matrix by a scaling matrix.

Returns

*this

If you want to draw a sprite with double the width, but the correct height:

yourSprite.draw(jngl::modelview().scale(2, 1));

rotate()

Mat3 & rotate

(

float

radian

)

Multiplies the matrix with a rotation matrix.

Returns

*this

Member Data Documentation

data

float data[9] = { 1, 0, 0, 0, 1, 0, 0, 0, 1 }

column-major

Definition at line 71 of file Mat3.hpp.

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

• jngl/Mat3.hpp