The Camera class provides view and perspective projection matrices. Additional the viewport of camera is stored. The view of camera has to be specified by eye, center and up or by position, viewdirection and up. It is allowed to mix both definitions, but it might lead to unexpected behaviour. The perspective projection is specified by field of view, viewport, and near and far plane. More...

#include <camera.h>

Inheritance diagram for Camera:

Public Slots
void	setPosition (const QVector3D &position)
	Sets position of camera to given value. center() will be changed in order to keep viewDirection() the same. More...

void	setViewDirection (const QVector3D &viewDirection)
	Sets viewDirection of camera to given vector. center() will be changed in order to keep eye() consistent. More...

void	setEye (const QVector3D &eye)
	Sets eye (position) of camera to given value. center() will not be changed, so viewDirection() is set to center() - eye() More...

void	setCenter (const QVector3D &center)
	Sets center of camera to given value. viewDirection() will be set to new center() - eye(). More...

void	setUp (const QVector3D &up)
	Sets up-vector of camera. More...

void	setView (const QVector3D &eye, const QVector3D &center, const QVector3D &up)
	Convenience method to specify view with one method call. More...

void	setViewport (const QSize &viewport)

void	setViewport (int x, int y)

void	setFovy (float angle)

void	setZNear (float zNear)

void	setZFar (float zFar)

Signals
void	viewChanged ()

Public Member Functions
	Camera (QObject *parent=0)

	Camera (const Camera &camera, QObject *parent=0)
	Creates a new Camera with matrices copied. More...

virtual	~Camera ()

const QMatrix4x4 &	view () const

const QMatrix4x4 &	viewInverted () const

const QMatrix4x4 &	viewProjection () const

const QMatrix4x4 &	viewProjectionInverted () const

const QMatrix4x4 &	projection () const

const QMatrix4x4 &	projectionInverted () const

const QVector3D &	position () const

QVector3D	viewDirection () const

const QVector3D &	center () const

const QVector3D &	eye () const

const QVector3D &	up () const

const QSize &	viewport () const

float	fovy () const

float	zNear () const

float	zFar () const

Protected Member Functions
void	invalidateView () const

void	invalidateProjection () const

void	recalculateView () const

void	recalculateProjection () const

void	recalculateViewProjection () const

Protected Attributes
QVector3D *	m_eye

QVector3D *	m_center

QVector3D *	m_up

QSize *	m_viewport

float	m_zNear

float	m_zFar

float	m_fovy

QMatrix4x4 *	m_view

QMatrix4x4 *	m_viewInverted

QMatrix4x4 *	m_projection

QMatrix4x4 *	m_projectionInverted

QMatrix4x4 *	m_viewProjection

QMatrix4x4 *	m_viewProjectionInverted

bool	m_isViewInvalid

bool	m_isProjectionInvalid

bool	m_isViewProjectionInvalid

Detailed Description

The Camera class provides view and perspective projection matrices. Additional the viewport of camera is stored. The view of camera has to be specified by eye, center and up or by position, viewdirection and up. It is allowed to mix both definitions, but it might lead to unexpected behaviour. The perspective projection is specified by field of view, viewport, and near and far plane.

Constructor & Destructor Documentation

Camera::Camera ( QObject * parent = 0 )

explicit

Camera::Camera	(	const Camera &	camera,
		QObject *	parent = `0`
	)

Creates a new Camera with matrices copied.

Parameters

camera	Specifies the camera the matrices are copied from.
parent	Specifies the parent

Camera::~Camera ( )

virtual

Member Function Documentation

const QVector3D& Camera::center ( ) const

const QVector3D& Camera::eye ( ) const

float Camera::fovy ( ) const

void Camera::invalidateProjection ( ) const

protected

void Camera::invalidateView ( ) const

protected

const QVector3D& Camera::position ( ) const

QMatrix4x4 const & Camera::projection ( ) const

QMatrix4x4 const & Camera::projectionInverted ( ) const

void Camera::recalculateProjection ( ) const

protected

void Camera::recalculateView ( ) const

protected

void Camera::recalculateViewProjection ( ) const

protected

void Camera::setCenter ( const QVector3D & center )

slot

Sets center of camera to given value. viewDirection() will be set to new center() - eye().

Parameters

center Position the camera is looking to.

void Camera::setEye ( const QVector3D & eye )

slot

Sets eye (position) of camera to given value. center() will not be changed, so viewDirection() is set to center() - eye()

Parameters

eye	Camera will be set to this position.

void Camera::setFovy ( float angle )

slot

void Camera::setPosition ( const QVector3D & position )

slot

Sets position of camera to given value. center() will be changed in order to keep viewDirection() the same.

Parameters

position Camera will be set to this position.

void Camera::setUp ( const QVector3D & up )

slot

Sets up-vector of camera.

Parameters

up	New up vector.

void Camera::setView	(	const QVector3D &	eye,
		const QVector3D &	center,
		const QVector3D &	up
	)

slot

Convenience method to specify view with one method call.

Parameters

eye	See setEye()
center	See setCenter()
up	See setUp()

void Camera::setViewDirection ( const QVector3D & viewDirection )

slot

Sets viewDirection of camera to given vector. center() will be changed in order to keep eye() consistent.

Parameters

viewDirection Direction the camera should look.

void Camera::setViewport ( const QSize & viewport )

slot

void Camera::setViewport	(	int	x,
		int	y
	)

slot

void Camera::setZFar ( float zFar )

slot

void Camera::setZNear ( float zNear )

slot

const QVector3D& Camera::up ( ) const

QMatrix4x4 const & Camera::view ( ) const

void Camera::viewChanged ( )

signal

QVector3D Camera::viewDirection ( ) const

QMatrix4x4 const & Camera::viewInverted ( ) const

const QSize& Camera::viewport ( ) const

QMatrix4x4 const & Camera::viewProjection ( ) const

QMatrix4x4 const & Camera::viewProjectionInverted ( ) const

float Camera::zFar ( ) const

float Camera::zNear ( ) const

Member Data Documentation

QVector3D* Camera::m_center

protected

QVector3D* Camera::m_eye

protected

float Camera::m_fovy

protected

bool Camera::m_isProjectionInvalid

mutableprotected

bool Camera::m_isViewInvalid

mutableprotected

bool Camera::m_isViewProjectionInvalid

mutableprotected

QMatrix4x4* Camera::m_projection

mutableprotected

QMatrix4x4* Camera::m_projectionInverted

mutableprotected

QVector3D* Camera::m_up

protected

QMatrix4x4* Camera::m_view

mutableprotected

QMatrix4x4* Camera::m_viewInverted

mutableprotected

QSize* Camera::m_viewport

protected

QMatrix4x4* Camera::m_viewProjection

mutableprotected

QMatrix4x4* Camera::m_viewProjectionInverted

mutableprotected

float Camera::m_zFar

protected

float Camera::m_zNear

protected

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

Public Slots

Signals

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation