gf::Transform Struct Reference

A simple transformation (rotation then translation) More...

#include <gf/Transform.h>

Public Member Functions
	Transform ()
	Default constructor. More...
	Transform (float angle, Vector2f offset)
	Constructor with a rotation and a translation. More...
	Transform (float angle)
	Constructor with a rotation. More...
	Transform (Vector2f offset)
	Constructor with a translation. More...
void	setAngle (float angle)
	Set the rotation angle. More...
float	getAngle () const
	Get the rotation angle. More...
void	setOffset (Vector2f offset) noexcept
	Set the translation offset. More...
Vector2f	getOffset () const noexcept
	Get the translation offset. More...

Public Attributes
Rotation	rotation
	The rotation of the transformation. More...
Translation	translation
	The translation of the transformation. More...

Related Functions
(Note that these are not member functions.)
constexpr Vector2f	transform (const Transform &trans, Vector2f point)
	Apply a transformation to a 2D point. More...
constexpr Vector2f	inverseTransform (const Transform &trans, Vector2f point)
	Apply an inverse transformation to a 2D point. More...

Detailed Description

A simple transformation (rotation then translation)

This class is meant for simple transformation as can be seen in physics. It is the composition of a rotation and a translation.

For more complex affine transformation, you can use gf::Matrix3f.

See also

gf::Matrix3f, gf::Rotation, gf::Translation

Constructor & Destructor Documentation

Transform() [1/4]

gf::Transform::Transform ( )

inline

Default constructor.

The default transform is the identity.

Transform() [2/4]

gf::Transform::Transform ( float  angle, Vector2f  offset  )

inline

Constructor with a rotation and a translation.

Parameters

angle	The rotation angle
offset	The translation offset

Transform() [3/4]

gf::Transform::Transform ( float  angle )

inline

Constructor with a rotation.

There is no translation.

Parameters

angle

The rotation angle

Transform() [4/4]

gf::Transform::Transform ( Vector2f  offset )

inline

Constructor with a translation.

There is no rotation.

Parameters

offset

The translation offset

Member Function Documentation

getAngle()

float gf::Transform::getAngle ( ) const

inline

Get the rotation angle.

Returns

The rotation angle

getOffset()

Vector2f gf::Transform::getOffset ( ) const

inlinenoexcept

Get the translation offset.

Returns

The translation offset

setAngle()

void gf::Transform::setAngle ( float  angle )

inline

Set the rotation angle.

Parameters

angle

The rotation angle

setOffset()

void gf::Transform::setOffset ( Vector2f  offset )

inlinenoexcept

Set the translation offset.

Parameters

offset

The translation offset

Friends And Related Function Documentation

inverseTransform()

constexpr Vector2f inverseTransform ( const Transform &  trans, Vector2f  point  )

related

Apply an inverse transformation to a 2D point.

Parameters

trans	The transformation
point	The point to transform

Returns

The transformed point

transform()

constexpr Vector2f transform ( const Transform &  trans, Vector2f  point  )

related

Apply a transformation to a 2D point.

Parameters

trans	The transformation
point	The point to transform

Returns

The transformed point

Member Data Documentation

rotation

Rotation gf::Transform::rotation

The rotation of the transformation.

translation

Translation gf::Transform::translation

The translation of the transformation.