SoDirectionalLightDragger.3iv - Man Page

directional icon you rotate and translate by dragging with the mouse

Inherits from

SoBase > SoFieldContainer > SoNode > SoBaseKit > SoInteractionKit > SoDragger > SoDirectionalLightDragger


#include <Inventor/draggers/SoDirectionalLightDragger.h>

Fields from class SoDirectionalLightDragger:

SoSFRotation rotation

SoSFVec3f translation

Fields from class SoDragger:

SoSFBool isActive

Fields from class SoInteractionKit:

SoSFEnum renderCaching

SoSFEnum boundingBoxCaching

SoSFEnum renderCulling

SoSFEnum pickCulling

Parts from class SoBaseKit:

(SoNodeKitListPart) callbackList

Methods from class SoDirectionalLightDragger:


static const SoNodekitCatalog *
getClassNodekitCatalog() const

static SoType getClassTypeId()

Methods from class SoDragger:

void addStartCallback(SoDraggerCB *f, void *userData = NULL)

void removeStartCallback(SoDraggerCB *f, void *userData = NULL)

void addMotionCallback(SoDraggerCB *f, void *userData = NULL)

void removeMotionCallback(SoDraggerCB *f, void *userData = NULL)

void addFinishCallback(SoDraggerCB *f, void *userData = NULL)

void removeFinishCallback(SoDraggerCB *f, void *userData = NULL)

void addValueChangedCallback(SoDraggerCB *f, void *userData = NULL)

void removeValueChangedCallback(SoDraggerCB *f, void *userData = NULL)

SbBool enableValueChangedCallbacks()

void setMinGesture(int pixels)

int getMinGesture() const

static void setMinScale(float newMinScale)

static float getMinScale()

Methods from class SoInteractionKit:

virtual SbBool setPartAsPath(const SbName &partName, SoPath *surrogatePath )

Methods from class SoBaseKit:

virtual const SoNodekitCatalog *
getNodekitCatalog() const

virtual SoNode * getPart(const SbName &partName, SbBool makeIfNeeded)

SbString getPartString(const SoBase *part)

virtual SoNodeKitPath * createPathToPart(const SbName &partName, SbBool makeIfNeeded, const SoPath *pathToExtend = NULL)

virtual SbBool setPart(const SbName &partName, SoNode *newPart)

SbBool set(char *partName, char *parameters)

SbBool set(char *nameValuePairs)

static SbBool isSearchingChildren()

static void setSearchingChildren(SbBool newVal)

Methods from class SoNode:

void setOverride(SbBool state)

SbBool isOverride() const

SoNode * copy(SbBool copyConnections = FALSE) const

virtual SbBool affectsState() const

static SoNode * getByName(const SbName &name)

static int getByName(const SbName &name, SoNodeList &list)

Methods from class SoFieldContainer:

void setToDefaults()

SbBool hasDefaultValues() const

SbBool fieldsAreEqual(const SoFieldContainer *fc) const

void copyFieldValues(const SoFieldContainer *fc, SbBool copyConnections = FALSE)

void get(SbString &fieldDataString)

virtual int getFields(SoFieldList &resultList) const

virtual SoField * getField(const SbName &fieldName) const

SbBool getFieldName(const SoField *field, SbName &fieldName) const

SbBool isNotifyEnabled() const

SbBool enableNotify(SbBool flag)

Methods from class SoBase:

void ref()

void unref() const

void unrefNoDelete() const

void touch()

virtual SoType getTypeId() const

SbBool isOfType(SoType type) const

virtual void setName(const SbName &name)

virtual SbName getName() const

Macros from class SoBaseKit:

SO_GET_PART(kit, partName, partClass)
SO_CHECK_PART(kit, partName, partClass)


SoDirectionalLightDragger is a composite dragger. It looks like a sun with a large arrow coming out of it. The arrow can be rotated about the sun by dragging with the mouse; its orientation is given by the rotation field. You can also drag the sun (and the arrow with it) through 3-space. The location is stored in the translation field.

The dragger uses an SoRotateSphericalDragger for changing the rotation. Instead of using the default spherical geometry, this dragger uses an arrow shape.

The sun is an SoDragPointDragger. Dragging it edits the translation field; conversely, if you change the translation field the sun will move to that new location, bringing the arrow with it. The sun looks and behaves just like the sun in an SoPointLightDragger, as does the material part. See the SoPointLightDragger man page for details.

Remember: This is not a light source! It just looks like one. If you want to move a light with this dragger, you can either:

[a] Use an SoDirectionalLightManip, which is subclassed from SoLight. It creates an SoDirectionalLightDragger and uses it as the interface to change the direction of its light source (see the SoDirectionalLightManip man page). The manipulator also edits the material part of this dragger to match the color of light the manipulator is producing. However, the directional light manipulator will ignore the translation field, because a directional light has no location or translation field. So in this case the translation dragger merely allows you to move the physical arrow to wherever you'd like it to be.

[b] Put an SoTransform under an SoTransformSeparator. Add the SoDirectionalLight as the next child. Use a field-to-field connection between the rotation fields of this dragger and the transform node to synchronize the light with this dragger.

[c] Use engines to connect the rotation field of this dragger to the direction field of an SoDirectionalLight. Use the rotation as input to an SoComposeMatrix engine. Then, use an SoTransformVec3f engine to apply that matrix to (0,0,-1), the default light direction.

You can change the parts in any instance of this dragger using setPart(). The default part geometries are defined as resources for this SoDirectionalLightDragger class. They are detailed in the Dragger Resources section of the online reference page for this class. You can make your program use different default resources for the parts by copying the file /usr/share/data/draggerDefaults/directionalLightDragger.iv into your own directory, editing the file, and then setting the environment variable SO_DRAGGER_DIR to be a path to that directory.


SoSFRotation rotation
Orientation of the rotating part (an arrow by default).

SoSFVec3f translation
Position of the origin of the directional light dragger.



static const SoNodekitCatalog *
getClassNodekitCatalog() const
Returns an SoNodekitCatalog for this class

static SoType getClassTypeId()
Returns type identifier for this class.

Catalog Parts

All parts
Part NamePart TypeDefault TypeDefault
Extra information for list parts from above table
Part NameContainer TypePermissible Types
callbackListSeparatorCallback, EventCallback

Dragger Resources

.in 0n+.5i

Resource: directionalLightRotatorRotator
.in 0n+.5i
Part: rotator.rotator
Appearance: white arrow that goes through the sun
Description: picking this begins rotation of the arrow about the sun-shape

.in 0n+.5i
Resource: directionalLightRotatorRotatorActive
.in 0n+.5i
Part: rotator.rotatorActive
Appearance: yellow arrow that goes through the sun
Description: displayed while the arrow is being rotated

.in 0n+.5i
Resource: directionalLightRotatorFeedback
.in 0n+.5i
Appearance: empty Separator
Description: this disables display of the axes that a rotateSpherical dragger uses by default

.in 0n+.5i
Resource: directionalLightRotatorFeedbackActive
.in 0n+.5i
Part: rotator.feedbackActive
Appearance: empty Separator
Description: this disables display of the axes that a rotateSpherical dragger uses by default

.in 0n+.5i
Resource: directionalLightOverallMaterial
.in 0n+.5i
Part: material
Appearance: white. half strength emissive, half strength diffuse
Description: sets material for the sun shape when stationary. Resource for the moving sun, directionalLightTranslatorPlaneTranslatorActive, contains a yellow material for highlighting.

.in 0n+.5i
Resource: directionalLightTranslatorPlaneTranslator
.in 0n+.5i
Parts: translator.yzTranslator.translator
Appearance: sun shape with no material
Description: picking these parts initiates dragging by the yz, xz, and xy planar draggers respectively.

.in 0n+.5i
Resource: directionalLightTranslatorPlaneTranslatorActive
.in 0n+.5i
Parts: translator.yzTranslator.translatorActive
Appearance: yellow sun shape
Description: shown during planar dragging in the yz, xz, and xy planes respectively.

.in 0n+.5i
Resource: directionalLightTranslatorLineTranslator
.in 0n+.5i
Parts: translator.xTranslator.translator
Appearance: white cylinder
Description: picking these parts initiates dragging in the x, y, and z linear draggers respectively.

.in 0n+.5i
Resource: directionalLightTranslatorLineTranslatorActive
.in 0n+.5i
Parts: translator.xTranslator.translatorActive
Appearance: yellow cylinder
Description: shown during linear dragging in the x, y, and z directions respectively.

File Format/Defaults

DirectionalLightDragger {
renderCaching	AUTO
boundingBoxCaching	AUTO
renderCulling	AUTO
pickCulling	AUTO
isActive	FALSE
translation	0 0 0
rotation	0 0 1  0
callbackList	NULL
material	<directionalLightOverallMaterial resource>
translatorRotInv	NULL
translator	DragPointDragger {

rotator	RotateSphericalDragger {

rotator.rotator	<directionalLightRotatorRotator resource>
rotator.rotatorActive	<directionalLightRotatorRotatorActive resource>	<directionalLightRotatorFeedback resource>
rotator.feedbackActive	<directionalLightRotatorFeedbackActive resource>
translator.yzTranslator.translator	<directionalLightTranslatorPlaneTranslator resource>
translator.xzTranslator.translator	<directionalLightTranslatorPlaneTranslator resource>
translator.xyTranslator.translator	<directionalLightTranslatorPlaneTranslator resource>
translator.yzTranslator.translatorActive	<directionalLightTranslatorPlaneTranslatorActive resource>
translator.xzTranslator.translatorActive	<directionalLightTranslatorPlaneTranslatorActive resource>
translator.xyTranslator.translatorActive	<directionalLightTranslatorPlaneTranslatorActive resource>
translator.xTranslator.translator	<directionalLightTranslatorLineTranslator resource>
translator.yTranslator.translator	<directionalLightTranslatorLineTranslator resource>
translator.zTranslator.translator	<directionalLightTranslatorLineTranslator resource>
translator.xTranslator.translatorActive	<directionalLightTranslatorLineTranslatorActive resource>
translator.yTranslator.translatorActive	<directionalLightTranslatorLineTranslatorActive resource>
translator.zTranslator.translatorActive	<directionalLightTranslatorLineTranslatorActive resource>

See Also

SoInteractionKit, SoDragger, SoCenterballDragger, SoDragPointDragger, SoHandleBoxDragger, SoJackDragger, SoPointLightDragger, SoRotateCylindricalDragger, SoRotateDiscDragger, SoRotateSphericalDragger, SoScale1Dragger, SoScale2Dragger, SoScale2UniformDragger, SoScaleUniformDragger, SoSpotLightDragger, SoTabBoxDragger, SoTabPlaneDragger, SoTrackballDragger, SoTransformBoxDragger, SoTransformerDragger, SoTranslate1Dragger, SoTranslate2Dragger