SoCenterballDragger(3IV)

NAME
SoCenterballDragger — striped ball you rotate and re-center by dragging with the mouse

INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoBaseKit > SoInteractionKit > SoDragger > SoCenterballDragger

SYNOPSIS
#include <Inventor/draggers/SoCenterballDragger.h>

Fields from class SoCenterballDragger:

SoSFRotation
rotation
SoSFVec3f
center

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 SoCenterballDragger:

SoCenterballDragger()
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)

DESCRIPTION
SoCenterballDragger is a composite dragger. Its shape is a sphere defined by three intersecting circles. Where the circles intersect (at the ends of the x, y and z axes) there are sets of small green crosshairs. Dragging a pair of crosshairs translates the entire centerball within the plane of the crosshairs. The interface of the sphere and circles is just like SoTrackballDragger. Dragging a circle rotates about a constrained axis and dragging the areas between them rotates the sphere freely about the center. An invisible but pickable sphere initiates the free-rotation dragging.

When you drag the crosshairs, the center field is updated; there is no translation field. Dragging other parts of the centerball updates the rotation field. As with all draggers, if you change the fields the dragger moves in response.

The draggers used for the crosshair parts are SoTranslate2Draggers, so pressing the <Shift> key allows you to constrain motion to slide along either the local x axis or y axis of that crosshair.. The direction is determined by your initial mouse gesture after pressing the key. Releasing the key removes the constraint.

Remember: This is not an SoTransform! If you want to move other objects with this dragger, you can either:

[a] Use an SoCenterballManip, which is subclassed from SoTransform. The manipulator creates one of these draggers and uses it as the interface to edit the manipulator's fields. (See the SoCenterballManip man page.)

[b] Use field-to-field connections to connect the fields of this dragger to those of any SoTransformation node.

You can change the parts in any instance of this dragger using setPart(). The default part geometries are defined as resources for this SoCenterballDragger 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/centerballDragger.iv into your own directory, editing the file, and then setting the environment variable SO_DRAGGER_DIR to be a path to that directory.

FIELDS
SoSFRotation
rotation
Orientation of the centerball dragger.

SoSFVec3f
center
Center of rotation and scale of the centerball dragger.

METHODS

SoCenterballDragger()
Constructor.

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

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

CATALOG PARTS
All parts
 |  |  | NULL by
Part Name | Part Type | Default Type | Default
callbackList | NodeKitListPart | -- | yes
translateToCenter | MatrixTransform | -- | yes
surroundScale | SurroundScale | -- | yes
antiSquish | AntiSquish | -- | no
lightModel | LightModel | -- | yes
XAxis | Separator | -- | yes
YAxis | Separator | -- | yes
ZAxis | Separator | -- | yes
rotator | RotateSphericalDragger | -- | yes
YRotator | RotateCylindricalDragger | -- | yes
ZCenterChanger | Translate2Dragger | -- | yes
ZRotator | RotateCylindricalDragger | -- | yes
YCenterChanger | Translate2Dragger | -- | yes
XCenterChanger | Translate2Dragger | -- | yes
XRotator | RotateCylindricalDragger | -- | yes
Extra information for list parts from above table
Part Name | Container Type | Permissible Types
callbackList | Separator | Callback, EventCallback

DRAGGER RESOURCES
.in 0n+.5i
Resource:    centerballRotator
.in 0n+.5i
Part:    rotator.rotator
Appearance:    Invisible but pickable sphere
Description:    When picked, initiates free rotation about the center point. Slightly smaller radius than the stripes, so you must pick between the stripes to use it.

.in 0n+.5i
Resource:    centerballRotatorActive
.in 0n+.5i
Part:    rotator.rotatorActive
Appearance:    Invisible sphere
Description:    Displayed during unconstrained 3D rotation instead of centerballRotator.

.in 0n+.5i
Resource:    centerballStripe
.in 0n+.5i
Parts:    XRotator.rotator
    YRotator.rotator
    ZRotator.rotator
Appearance:    White circle aligned with rotation axis.
Description:    When picked, initiates constrained rotation. Each rotator rotates locally about its Y axis. The centerball contains private transform parts that orient the draggers along three different axes.

.in 0n+.5i
Resource:    centerballStripeActive
.in 0n+.5i
Parts:    XRotator.rotatorActive
    YRotator.rotatorActive
    ZRotator.rotatorActive
Appearance:    White circle aligned with the rotation axis.
Description:    Displayed during constrained rotation instead of the rotator part. The centerball orients the draggers along three different axes.

.in 0n+.5i
Resource:    centerballCenterChanger
.in 0n+.5i
Parts:    XCenterChanger.translator
    YCenterChanger.translator
    ZCenterChanger.translator
Appearance:    Two sets of small green crosshairs, one located at each intersection of axis and ball.
Description:    When picked, initiates 2D translation of ball through space. Edits the center field, which becomes center for subsequent rotations. Each translator works locally in its X-Y plane. The centerball contains
private transform parts that place the draggers along three different axes.

.in 0n+.5i
Resource:    centerballCenterChangerActive
.in 0n+.5i
Parts:    XCenterChanger.translatorActive
    YCenterChanger.translatorActive
    ZCenterChanger.translatorActive
Appearance:    Yellow version of centerballCenterChanger.
Description:    Displayed during 2D translation instead of regular translator part. The centerball places the draggers along three different axes.

.in 0n+.5i
Resource:    centerballCenterXAxisFeedback
.in 0n+.5i
Parts:    XCenterChanger.xAxisFeedback
    YCenterChanger.xAxisFeedback
    ZCenterChanger.xAxisFeedback
Appearance:    Double-headed purple arrows, one located at each intersection of axis and ball. Located atop X axis of crosshair.
Description:    Only shown if dragger is moving and the axis is a permitted direction of motion. When pressing <shift>, motion is constrained, and this is displayed only if the primary motion is in the X direction
of the child dragger's local space. The centerball places the draggers along three different axes; so not all of these parts aligns with the X axis in centerball space.

.in 0n+.5i
Resource:    centerballCenterYAxisFeedback
.in 0n+.5i
Parts:    XCenterChanger.yAxisFeedback
    YCenterChanger.yAxisFeedback
    ZCenterChanger.yAxisFeedback
Appearance:    Double-headed purple arrows, one located at each intersection of axis and ball. Located atop Y axis of crosshair.
Description:    Only shown if dragger is moving and the axis is a permitted direction of motion. When pressing <shift>, motion is constrained, and this is displayed only if the primary motion is in the Y direction
of the child dragger's local space. The centerball places the draggers along three different axes; so not all of these parts aligns with the Y axis in centerball space.

.in 0n+.5i
Resource:    centerballXAxis
.in 0n+.5i
Part:    XAxis
Appearance:    Thin yellow line connecting left and right crosshairs.
Description:    Feedback shown alone during rotation about X axis; displayed with centerballYAxis and centerballZAxis while center is dragged.

.in 0n+.5i
Resource:    centerballYAxis
.in 0n+.5i
Part:    YAxis
Appearance:    Thin yellow line connecting lower and upper crosshairs.
Description:    Feedback shown alone during rotation about Y axis; displayed with centerballXAxis and centerballZAxis while center is dragged.

.in 0n+.5i
Resource:    centerballZAxis
.in 0n+.5i
Part:    ZAxis
Appearance:    Thin yellow line connecting near and far crosshairs.
Description:    Feedback shown alone during rotation about Z axis; displayed with centerballXAxis and centerballYAxis while center is dragged.

FILE FORMAT/DEFAULTS
CenterballDragger {
renderCaching	AUTO
boundingBoxCaching	AUTO
renderCulling	AUTO
pickCulling	AUTO
isActive	FALSE
rotation	0 0 1  0
center	0 0 0
callbackList	NULL
translateToCenter	MatrixTransform {
    matrix 1 0 0 0
	    0 1 0 0
	    0 0 1 0
	    0 0 0 1 }
surroundScale	NULL
antiSquish	AntiSquish {
    sizing LONGEST_DIAGONAL }
lightModel	LightModel {
    model PHONG }
XAxis	<centerballXAxis resource>
YAxis	<centerballYAxis resource>
ZAxis	<centerballZAxis resource>
rotator	RotateSphericalDragger {
}
YRotator	RotateCylindricalDragger {
}
ZCenterChanger	Translate2Dragger {
}
ZRotator	RotateCylindricalDragger {
}
YCenterChanger	Translate2Dragger {
}
XCenterChanger	Translate2Dragger {
}
XRotator	RotateCylindricalDragger {
}
rotator.rotator	<centerballRotator resource>
rotator.rotatorActive	<centerballRotatorActive resource>
XRotator.rotator	<centerballStripe resource>
YRotator.rotator	<centerballStripe resource>
ZRotator.rotator	<centerballStripe resource>
XRotator.rotatorActive	<centerballStripeActive resource>
YRotator.rotatorActive	<centerballStripeActive resource>
ZRotator.rotatorActive	<centerballStripeActive resource>
XCenterChanger.translator	<centerballCenterChanger resource>
YCenterChanger.translator	<centerballCenterChanger resource>
ZCenterChanger.translator	<centerballCenterChanger resource>
XCenterChanger.translatorActive	<centerballCenterChangerActive resource>
YCenterChanger.translatorActive	<centerballCenterChangerActive resource>
ZCenterChanger.translatorActive	<centerballCenterChangerActive resource>
XCenterChanger.xAxisFeedback	<centerballCenterXAxisFeedback resource>
YCenterChanger.xAxisFeedback	<centerballCenterXAxisFeedback resource>
ZCenterChanger.xAxisFeedback	<centerballCenterXAxisFeedback resource>
XCenterChanger.yAxisFeedback	<centerballCenterYAxisFeedback resource>
YCenterChanger.yAxisFeedback	<centerballCenterYAxisFeedback resource>
ZCenterChanger.yAxisFeedback	<centerballCenterYAxisFeedback resource>
}

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