Computes the bounding box and center of a scene graph. More...

#include <Inventor/engines/SoComputeBoundingBox.h>

Inheritance diagram for SoComputeBoundingBox:

Public Member Functions
	SoComputeBoundingBox ()
	Constructor.
void	setViewportRegion (const SbViewportRegion &vpReg)
	Sets the viewport region to use for the bounding box computation.
const SbViewportRegion &	getViewportRegion () const
Static Public Member Functions
static void	initClass ()
	Initializes base engine class.
Public Attributes
SoSFNode	node
	Inputs:
SoSFPath	path
	Pointer to path defining graph.
SoEngineOutput	min
	Outputs:
SoEngineOutput	max
	(SoSFVec3f) Maximum point of bbox
SoEngineOutput	boxCenter
	(SoSFVec3f) Center point of bbox
SoEngineOutput	objectCenter
	(SoSFVec3f) Center of object(s)
Protected Member Functions
virtual void	inputChanged (SoField *whichInput)
	Indicates that an input has changed - we use this to determine whether to use the node or path, or to disable output entirely.

Detailed Description

This engine computes the bounding box and center of a scene graph. The scene graph can be defined by a path or by a root node.

If the path input is not NULL, the bounding box of the graph defined by the path will be computed. If path is NULL, but the node input is not NULL, the bounding box is computed on the graph rooted by the node. By default, the two inputs are NULL. If both the inputs are NULL, the outputs are disabled.

The engine uses a default viewport region. If the graph includes screen-based objects (such as SoText2) you can call setViewportRegion() on the engine instance to set up the correct viewport region to use.