SoModifyViewVolumeElement Class Reference
[Elements]

Stores a view volume subset. More...

#include <Inventor/elements/SoModifyViewVolumeElement.h>

Inheritance diagram for SoModifyViewVolumeElement:

List of all members.

Static Public Member Functions
static SoType	getClassTypeId ()
static int	getClassStackIndex ()
static void	set (SoState *state, const SbVec4f &portion)
static void	set (SoState *state, const SbBox3f &portion)
static void	setInfo (SoState *state, int info)
static int	getInfo (SoState *state)
static const SbVec4f &	get (SoState *state)
static const SbBox3f &	getBox (SoState *state)
static void	getWallCoordinates (SoState *state, SbVec3f &lowerLeft, SbVec3f &lowerRight, SbVec3f &upperLeft)
static void	setWallCoordinates (SoState *state, SbVec3f lowerLeft, SbVec3f lowerRight, SbVec3f upperLeft)
static SbBool	useWallCoordinates (SoState *state)
static SbVec4f	getDefault ()
static SbBox3f	getDefaultBox ()
static SoModifyViewVolumeElement *	getInstance (const SoState *state, SbBool &elemIsSet)

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Detailed Description

Stores a view volume subset.

This element stores a view volume subset. This element is used for "tiled" rendering, where we create a large image by rendering one tile (subimage) at a time. In this case we must "narrow" the view volume for each tile, without modifying the camera nodes in the scene graph. SoCamera::computeView uses this element to modify the view volume after other adjustments have been made. See also SoOffscreenRenderArea.

SEE ALSO

PoBaseView, SoOffscreenRenderArea

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Member Function Documentation

static const SbVec4f& SoModifyViewVolumeElement::get

(

SoState *

state

)

[static]

Returns the current portion of the view volume from the state.

static const SbBox3f& SoModifyViewVolumeElement::getBox

(

SoState *

state

)

[static]

Returns the current portion of the view volume from the state.

static int SoModifyViewVolumeElement::getClassStackIndex

(

)

[static]

Returns the stack id for this element.

Reimplemented from SoElement.

static SoType SoModifyViewVolumeElement::getClassTypeId

(

)

[static]

Returns the type identifier for this class.

Reimplemented from SoElement.

static SbVec4f SoModifyViewVolumeElement::getDefault

(

)

[inline, static]

Returns the default screen portion.

static SbBox3f SoModifyViewVolumeElement::getDefaultBox

(

)

[inline, static]

Returns the default screen portion.

static int SoModifyViewVolumeElement::getInfo

(

SoState *

state

)

[static]

Gets an integer info.

static SoModifyViewVolumeElement* SoModifyViewVolumeElement::getInstance	(	const SoState *	state,
		SbBool &	elemIsSet
	)			[static]

Return the top (current) instance of the element in the state Note it does NOT cause cache dependency! It also casts away the const.

static void SoModifyViewVolumeElement::getWallCoordinates	(	SoState *	state,
		SbVec3f &	lowerLeft,
		SbVec3f &	lowerRight,
		SbVec3f &	upperLeft
	)			[static]

Returns the current coordinates of the virtual window in the real world.

MP: coordinates of the projection wall/window in real world i.e., relative to the tracking system base or reference frame.

static void SoModifyViewVolumeElement::set	(	SoState *	state,
		const SbBox3f &	portion
	)			[static]

Sets the current portion in the state to the given portion (left, bottom, right, top).

static void SoModifyViewVolumeElement::set	(	SoState *	state,
		const SbVec4f &	portion
	)			[static]

Sets the current portion in the state to the given portion (left, bottom, right, top).

static void SoModifyViewVolumeElement::setInfo	(	SoState *	state,
		int	info
	)			[static]

Sets an integer info.

static void SoModifyViewVolumeElement::setWallCoordinates	(	SoState *	state,
		SbVec3f	lowerLeft,
		SbVec3f	lowerRight,
		SbVec3f	upperLeft
	)			[static]

Sets the current coordinates of the virtual window in the real world.

MP: coordinates of the projection wall/window in real world i.e., relative to the tracking system base or reference frame.

static SbBool SoModifyViewVolumeElement::useWallCoordinates

(

SoState *

state

)

[static]

Returns a boolean telling the Camera to compute a view volume using the wall coordinates.

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

• Inventor/elements/SoModifyViewVolumeElement.h