SoOrthoSliceDragger Class Reference
[Draggers]

Object that moves an SoOrthoSlice by dragging with the mouse. More...

#include <VolumeViz/draggers/SoOrthoSliceDragger.h>

Inheritance diagram for SoOrthoSliceDragger:

List of all members.

Public Member Functions
virtual SoType	getTypeId () const
virtual const SoNodekitCatalog *	getNodekitCatalog () const
	SoOrthoSliceDragger ()
Static Public Member Functions
static SoType	getClassTypeId ()
static const SoNodekitCatalog *	getClassNodekitCatalog ()
Public Attributes
SoSFPath	orthoSlicePath
SoSFVec3i32	volumeDimension
SoSFBox3f	volumeExtent

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Detailed Description

Object that moves an SoOrthoSlice by dragging with the mouse.

SoOrthoSliceDragger is derived from SoTranslate1Dragger and has similar behavior, but is specifically designed to allow direct manipulation of an SoOrthoSlice. The difference is that this class uses the actual geometry of the ortho slice to detect mouse clicks and automatically updates the slice's SoOrthoSlice::sliceNumber field as the dragger is moved. Conversely the dragger updates itself if the slice's axis or sliceNumber fields are changed by the application.

The dragger will not do anything until all three fields (orthoSlicePath, volumeDimension and volumeExtent) have been set. The path can be a partial path, i.e. it does not need to start at the root of the scene graph. However it must include the SoOrthoSlice node.

The dragger always sets its "translator" part to be the actual ortho slice node. When the dragger is created it sets its "translatorActive" part to be an empty Separator. You can reset this to something else. You can attach callbacks to this dragger in the usual way.

If the camera faces the slice (i.e. the orientation of the slice and the camera are exactly the same), the dragger will automatically change its orientation to another axis so that it can be manipulated (otherwise it can't). When the dragger itself is displayed, this behaviour may be surprising, and it can be disabled by setting the SoPreferences value IVVR_ENABLE_ORTHOSLICE_DRAGGER_AXIS_SWITCH to FALSE.

EXAMPLE

   SoSeparator* volSep = new SoSeparator();
   root->addChild( volSep );

   // Create and initialize data node
   SoVolumeData* volData = new SoVolumeData();
   volSep->addChild( volData );

   // Create and initialize orthoslice node
   SoOrthoSlice* orthoSlice = new SoOrthoSlice();
   volSep->addChild( orthoSlice );

   // Create path to slice node
   // Note: Can be a partial path but must include the slice node.
   SoPath* path = new SoPath( volSep );
   path->append( orthoSlice );

   // Create and initialize dragger
   SoOrthoSliceDragger* dragger = new SoOrthoSliceDragger();
   dragger->orthoSlicePath  = path;
   dragger->volumeDimension = volData->data.getSize();
   dragger->volumeExtent    = volData->extent.getValue();
   volSep->addChild( dragger );

FILE FORMAT/DEFAULT

OrthoSliceDragger {

orthoSlicePath	NULL
volumeDimension	0 0 0
volumeExtent	0 0 0

}

SEE ALSO

SoDragger, SoTranslate1Dragger, SoOrthoSlice

See related examples:

VolRend

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Constructor & Destructor Documentation

SoOrthoSliceDragger::SoOrthoSliceDragger

(

)

Constructor.

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Member Function Documentation

static const SoNodekitCatalog* SoOrthoSliceDragger::getClassNodekitCatalog

(

)

[static]

Returns the SoNodekitCatalog for this class.

Reimplemented from SoTranslate1Dragger.

static SoType SoOrthoSliceDragger::getClassTypeId

(

)

[static]

Returns the type identifier for this class.

Reimplemented from SoTranslate1Dragger.

virtual const SoNodekitCatalog* SoOrthoSliceDragger::getNodekitCatalog

(

)

const [virtual]

Returns the SoNodekitCatalog for this instance.

Reimplemented from SoTranslate1Dragger.

virtual SoType SoOrthoSliceDragger::getTypeId

(

)

const [virtual]

Returns the type identifier for this specific instance.

Reimplemented from SoTranslate1Dragger.

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Member Data Documentation

SoSFPath SoOrthoSliceDragger::orthoSlicePath

Path to the SoOrthoSlice node to drag.

Default is empty (no path).

SoSFVec3i32 SoOrthoSliceDragger::volumeDimension

Dimension of the volume.

Default is 0,0,0 (no volume).

SoSFBox3f SoOrthoSliceDragger::volumeExtent

Extent of the volume.

Default is empty (no volume).

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

• VolumeViz/draggers/SoOrthoSliceDragger.h