QVRRenderContext Class Reference

Context for rendering a frame. More...

#include <rendercontext.hpp>

Public Member Functions
	QVRRenderContext ()
	Constructor.
int	processIndex () const
	Returns the index of the process that the window displaying the view belongs to.
int	windowIndex () const
	Returns the index of the window displaying the view, relative to the process it belongs to.
const QRect &	windowGeometry () const
	Returns the pixel-based geometry of window on the Qt display screen (from QWindow::geometry()).
const QRect &	screenGeometry () const
	Returns the pixel-based geometry of the Qt screen that the window is displayed on (from QScreen::geometry()).
const QVector3D &	navigationPosition () const
	Returns the observer navigation position.
const QQuaternion &	navigationOrientation () const
	Returns the observer navigation orientation.
QMatrix4x4	navigationMatrix () const
	Returns the observer navigation matrix.
QVector3D	screenWallBottomLeft () const
	Returns the virtual world coordinates of the bottom left corner of the screen wall.
QVector3D	screenWallBottomRight () const
	Returns the virtual world coordinates of the bottom right corner of the screen wall.
QVector3D	screenWallTopLeft () const
	Returns the virtual world coordinates of the top left corner of the screen wall.
QVROutputMode	outputMode () const
	Returns the output mode of the window displaying the view.
int	viewCount () const
	Returns the number of views necessary to produce the frame.
QVREye	eye (int view) const
	Returns the eye for rendering view.
QSize	textureSize (int view) const
	Returns the texture size for rendering view.
const QVector3D &	trackingPosition (int view) const
	Returns the observer tracking position for rendering view.
const QQuaternion &	trackingOrientation (int view) const
	Returns the observer tracking orientation for rendering view.
QMatrix4x4	trackingMatrix (int view) const
	Returns the observer tracking matrix for rendering view.
const QVRFrustum &	frustum (int view) const
	Returns the frustum for rendering view.
const QMatrix4x4 &	viewMatrix (int view) const
	Returns the view matrix for rendering view.
const QMatrix4x4 &	viewMatrixPure (int view) const
	Returns the pure view matrix (i.e. in tracking space, without navigation) for rendering view.

Friends
class	QVRWindow
QDataStream &	operator<< (QDataStream &ds, const QVRRenderContext &rc)
QDataStream &	operator>> (QDataStream &ds, QVRRenderContext &rc)

Detailed Description

Context for rendering a frame.

A render context provides information about the views into the virtual world that are required for one output frame in a given window.

This information depends on the QVRWindow that the frame is produced for and on the QVRObserver that observes this window.

The render context is used in various places:

• In QVRApp::render(), it provides the information necessary for the application to render a frame.
• In the event handling functions of QVRApp, it provides information about the frame displayed in the window that generated the event.
• In the output plugin function QVROutputPlugin(), the context provides information useful for a plugin to decide how to process the frame before displaying it.

Constructor & Destructor Documentation

QVRRenderContext()

QVRRenderContext::QVRRenderContext

(

)

Constructor.

Member Function Documentation

eye()

QVREye QVRRenderContext::eye ( int view ) const

inline

Returns the eye for rendering view.

frustum()

const QVRFrustum & QVRRenderContext::frustum ( int view ) const

inline

Returns the frustum for rendering view.

navigationMatrix()

QMatrix4x4 QVRRenderContext::navigationMatrix ( ) const

inline

Returns the observer navigation matrix.

navigationOrientation()

const QQuaternion & QVRRenderContext::navigationOrientation ( ) const

inline

Returns the observer navigation orientation.

navigationPosition()

const QVector3D & QVRRenderContext::navigationPosition ( ) const

inline

Returns the observer navigation position.

outputMode()

QVROutputMode QVRRenderContext::outputMode ( ) const

inline

Returns the output mode of the window displaying the view.

processIndex()

int QVRRenderContext::processIndex ( ) const

inline

Returns the index of the process that the window displaying the view belongs to.

screenGeometry()

const QRect & QVRRenderContext::screenGeometry ( ) const

inline

Returns the pixel-based geometry of the Qt screen that the window is displayed on (from QScreen::geometry()).

screenWallBottomLeft()

QVector3D QVRRenderContext::screenWallBottomLeft ( ) const

inline

Returns the virtual world coordinates of the bottom left corner of the screen wall.

screenWallBottomRight()

QVector3D QVRRenderContext::screenWallBottomRight ( ) const

inline

Returns the virtual world coordinates of the bottom right corner of the screen wall.

screenWallTopLeft()

QVector3D QVRRenderContext::screenWallTopLeft ( ) const

inline

Returns the virtual world coordinates of the top left corner of the screen wall.

textureSize()

QSize QVRRenderContext::textureSize ( int view ) const

inline

Returns the texture size for rendering view.

trackingMatrix()

QMatrix4x4 QVRRenderContext::trackingMatrix ( int view ) const

inline

Returns the observer tracking matrix for rendering view.

trackingOrientation()

const QQuaternion & QVRRenderContext::trackingOrientation ( int view ) const

inline

Returns the observer tracking orientation for rendering view.

trackingPosition()

const QVector3D & QVRRenderContext::trackingPosition ( int view ) const

inline

Returns the observer tracking position for rendering view.

viewCount()

int QVRRenderContext::viewCount ( ) const

inline

Returns the number of views necessary to produce the frame.

viewMatrix()

const QMatrix4x4 & QVRRenderContext::viewMatrix ( int view ) const

inline

Returns the view matrix for rendering view.

viewMatrixPure()

const QMatrix4x4 & QVRRenderContext::viewMatrixPure ( int view ) const

inline

Returns the pure view matrix (i.e. in tracking space, without navigation) for rendering view.

windowGeometry()

const QRect & QVRRenderContext::windowGeometry ( ) const

inline

Returns the pixel-based geometry of window on the Qt display screen (from QWindow::geometry()).

windowIndex()

int QVRRenderContext::windowIndex ( ) const

inline

Returns the index of the window displaying the view, relative to the process it belongs to.

Friends And Related Symbol Documentation

operator<<

QDataStream & operator<< ( QDataStream & ds, const QVRRenderContext & rc )

friend

operator>>

QDataStream & operator>> ( QDataStream & ds, QVRRenderContext & rc )

friend

QVRWindow

friend class QVRWindow

friend

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

• rendercontext.hpp