SoVRMLSphereSensor(3) | Library Functions Manual | SoVRMLSphereSensor(3) |
NAME¶
SoVRMLSphereSensor - The SoVRMLSphereSensor class maps pointer motion into rotations on a sphere.
SYNOPSIS¶
#include <Inventor/VRMLnodes/SoVRMLSphereSensor>
Inherits SoVRMLDragSensor.
Public Member Functions¶
virtual SoType getTypeId (void)
const
SoVRMLSphereSensor (void)
Public Member Functions inherited from SoVRMLDragSensor
virtual void handleEvent (SoHandleEventAction
*action)
Public Member Functions inherited from SoNode
void setOverride (const SbBool state)
SbBool isOverride (void) const
void setNodeType (const NodeType type)
NodeType getNodeType (void) const
virtual SoNode * copy (SbBool
copyconnections=FALSE) const
virtual SbBool affectsState (void) const
virtual void doAction (SoAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void GLRenderBelowPath (SoGLRenderAction
*action)
virtual void GLRenderInPath (SoGLRenderAction
*action)
virtual void GLRenderOffPath (SoGLRenderAction
*action)
virtual void callback (SoCallbackAction *action)
virtual void getBoundingBox
(SoGetBoundingBoxAction *action)
virtual void getMatrix (SoGetMatrixAction *action)
virtual void pick (SoPickAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void search (SoSearchAction *action)
virtual void write (SoWriteAction *action)
virtual void audioRender (SoAudioRenderAction
*action)
virtual void getPrimitiveCount
(SoGetPrimitiveCountAction *action)
virtual void grabEventsSetup (void)
virtual void grabEventsCleanup (void)
virtual void startNotify (void)
virtual void notify (SoNotList *l)
uint32_t getNodeId (void) const
virtual SoChildList * getChildren (void)
const
virtual void writeInstance (SoOutput *out)
virtual SoNode * addToCopyDict (void) const
virtual void copyContents (const
SoFieldContainer *from, SbBool copyconnections)
virtual SoFieldContainer * copyThroughConnection
(void) const
Public Member Functions inherited from SoFieldContainer
void setToDefaults (void)
SbBool hasDefaultValues (void) const
SbBool fieldsAreEqual (const SoFieldContainer *container)
const
void copyFieldValues (const SoFieldContainer
*container, SbBool copyconnections=FALSE)
SbBool set (const char *const fielddata)
void get (SbString &fielddata)
virtual int getFields (SoFieldList &l)
const
virtual int getAllFields (SoFieldList &l)
const
virtual SoField * getField (const SbName
&name) const
virtual SoField * getEventIn (const SbName
&name) const
virtual SoField * getEventOut (const SbName
&name) const
SbBool getFieldName (const SoField *const
field, SbName &name) const
SbBool enableNotify (const SbBool flag)
SbBool isNotifyEnabled (void) const
SbBool set (const char *fielddata, SoInput *input)
void get (SbString &fielddata, SoOutput
*out)
virtual SbBool validateNewFieldValue (SoField
*field, void *newval)
virtual void addWriteReference (SoOutput
*out, SbBool isfromfield=FALSE)
SbBool getIsBuiltIn (void) const
virtual void getFieldsMemorySize (size_t
&managed, size_t &unmanaged) const
void setUserData (void *userdata) const
void * getUserData (void) const
Public Member Functions inherited from SoBase
void ref (void) const
void unref (void) const
void unrefNoDelete (void) const
int32_t getRefCount (void) const
void touch (void)
SbBool isOfType (SoType type) const
virtual SbName getName (void) const
virtual void setName (const SbName
&newname)
void addAuditor (void *const auditor,
const SoNotRec::Type type)
void removeAuditor (void *const auditor,
const SoNotRec::Type type)
const SoAuditorList & getAuditors (void)
const
SbBool shouldWrite (void)
void assertAlive (void) const
Static Public Member Functions¶
static SoType getClassTypeId (void)
static void initClass (void)
Static Public Member Functions inherited from
SoVRMLDragSensor
static SoType getClassTypeId (void)
static void initClass (void)
Static Public Member Functions inherited from SoVRMLSensor
static SoType getClassTypeId (void)
static void initClass (void)
Static Public Member Functions inherited from SoNode
static uint32_t getCompatibilityTypes (const
SoType &nodetype)
static SoType getClassTypeId (void)
static SoNode * getByName (const SbName
&name)
static int getByName (const SbName &name,
SoNodeList &l)
static void initClass (void)
static void initClasses (void)
static uint32_t getNextNodeId (void)
static int getActionMethodIndex (const SoType
type)
static void getBoundingBoxS (SoAction *action,
SoNode *node)
static void GLRenderS (SoAction *action,
SoNode *node)
static void callbackS (SoAction *action,
SoNode *node)
static void getMatrixS (SoAction *action,
SoNode *node)
static void handleEventS (SoAction *action,
SoNode *node)
static void pickS (SoAction *action, SoNode
*node)
static void rayPickS (SoAction *action,
SoNode *node)
static void searchS (SoAction *action,
SoNode *node)
static void writeS (SoAction *action,
SoNode *node)
static void audioRenderS (SoAction *action,
SoNode *node)
static void getPrimitiveCountS (SoAction *action,
SoNode *node)
Static Public Member Functions inherited from
SoFieldContainer
static void initClass (void)
static SoType getClassTypeId (void)
static void cleanupClass (void)
static void initCopyDict (void)
static void addCopy (const SoFieldContainer
*orig, const SoFieldContainer *copy)
static SoFieldContainer * checkCopy (const
SoFieldContainer *orig)
static SoFieldContainer * findCopy (const
SoFieldContainer *orig, const SbBool
copyconnections)
static void copyDone (void)
Static Public Member Functions inherited from SoBase
static void initClass (void)
static SoType getClassTypeId (void)
static void addName (SoBase *const base,
const char *const name)
static void removeName (SoBase *const base,
const char *const name)
static void incrementCurrentWriteCounter (void)
static void decrementCurrentWriteCounter (void)
static SoBase * getNamedBase (const SbName
&name, SoType type)
static int getNamedBases (const SbName &name,
SoBaseList &baselist, SoType type)
static SbBool read (SoInput *input, SoBase
*&base, SoType expectedtype)
static void setInstancePrefix (const
SbString &c)
static void setTraceRefs (SbBool trace)
static SbBool getTraceRefs (void)
static SbBool connectRoute (SoInput *input, const
SbName &fromnodename, const SbName
&fromfieldname, const SbName
&tonodename, const SbName &tofieldname)
static SbBool readRoute (SoInput *input)
Public Attributes¶
SoSFRotation offset
SoSFRotation rotation_changed
Public Attributes inherited from SoVRMLDragSensor
SoSFVec3f trackPoint_changed
SoSFBool autoOffset
Public Attributes inherited from SoVRMLSensor
SoSFBool isActive
SoSFBool enabled
Protected Member Functions¶
virtual const SoFieldData *
getFieldData (void) const
virtual SbBool dragStart (void)
virtual void drag (void)
virtual void dragFinish (void)
virtual ~SoVRMLSphereSensor ()
Protected Member Functions inherited from SoVRMLDragSensor
SoVRMLDragSensor (void)
virtual ~SoVRMLDragSensor ()
const SbVec3f & getLocalStartingPoint (void)
const
const SbMatrix & getLocalToWorldMatrix (void)
const
const SbMatrix & getWorldToLocalMatrix (void)
const
const SbViewVolume & getViewVolume (void)
const
const SbVec2f & getNormalizedLocaterPosition
(void) const
Protected Member Functions inherited from SoNode
SoNode (void)
virtual ~SoNode ()
virtual SbBool readInstance (SoInput *in,
unsigned short flags)
Protected Member Functions inherited from SoFieldContainer
SoFieldContainer (void)
virtual ~SoFieldContainer ()
Protected Member Functions inherited from SoBase
SoBase (void)
virtual ~SoBase ()
virtual void destroy (void)
SbBool hasMultipleWriteRefs (void) const
SbBool writeHeader (SoOutput *out, SbBool isgroup,
SbBool isengine) const
void writeFooter (SoOutput *out) const
virtual const char * getFileFormatName (void)
const
Static Protected Member Functions¶
static const SoFieldData **
getFieldDataPtr (void)
Static Protected Member Functions inherited from
SoVRMLDragSensor
static const SoFieldData ** getFieldDataPtr
(void)
Static Protected Member Functions inherited from
SoVRMLSensor
static const SoFieldData ** getFieldDataPtr
(void)
Static Protected Member Functions inherited from SoNode
static const SoFieldData ** getFieldDataPtr
(void)
static void setNextActionMethodIndex (int index)
static int getNextActionMethodIndex (void)
static void incNextActionMethodIndex (void)
static void setCompatibilityTypes (const
SoType &nodetype, const uint32_t bitmask)
Static Protected Member Functions inherited from SoBase
static uint32_t getCurrentWriteCounter (void)
static void staticDataLock (void)
static void staticDataUnlock (void)
Additional Inherited Members¶
Public Types inherited from SoNode
enum NodeType { INVENTOR = 0x0000, VRML1 = 0x0001,
VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 =
0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020,
INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 =
0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3
= 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000,
COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 =
0x10000 }
Protected Types inherited from SoBase
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
Protected Attributes inherited from SoNode
uint32_t uniqueId
Protected Attributes inherited from SoFieldContainer
SbBool isBuiltIn
Static Protected Attributes inherited from SoNode
static uint32_t nextUniqueId = 1
static int nextActionMethodIndex = 0
Detailed Description¶
The SoVRMLSphereSensor class maps pointer motion into rotations on a sphere.
The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium:
SphereSensor {
exposedField SFBool autoOffset TRUE
exposedField SFBool enabled TRUE
exposedField SFRotation offset 0 1 0 0 # [-1,1],(-,)
eventOut SFBool isActive
eventOut SFRotation rotation_changed
eventOut SFVec3f trackPoint_changed }
The SphereSensor node maps pointing device motion into spherical rotation about the origin of the local coordinate system. The SphereSensor node uses the descendent geometry of its parent node to determine whether it is liable to generate events.
The enabled exposed field enables and disables the SphereSensor node. If enabled is TRUE, the sensor reacts appropriately to user events. If enabled is FALSE, the sensor does not track user input or send events. If enabled receives a FALSE event and isActive is TRUE, the sensor becomes disabled and deactivated, and outputs an isActive FALSE event. If enabled receives a TRUE event the sensor is enabled and ready for user activation.
The SphereSensor node generates events when the pointing device is activated while the pointer is indicating any descendent geometry nodes of the sensor's parent group. See 4.6.7.5, Activating and manipulating sensors (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.7.5), for details on using the pointing device to activate the SphereSensor.
Upon activation of the pointing device (e.g., mouse button down)
over the sensor's geometry, an isActive TRUE event is sent. The
vector defined by the initial point of intersection on the SphereSensor's
geometry and the local origin determines the radius of the sphere that is
used to map subsequent pointing device motion while dragging. The virtual
sphere defined by this radius and the local origin at the time of activation
is used to interpret subsequent pointing device motion and is not affected
by any changes to the sensor's coordinate system while the sensor is active.
For each position of the bearing, a rotation_changed event is sent which corresponds to the sum of the relative rotation from the original intersection point plus the offset value. trackPoint_changed events reflect the unclamped drag position on the surface of this sphere. When the pointing device is deactivated and autoOffset is TRUE, offset is set to the last rotation_changed value and an offset_changed event is generated. See 4.6.7.4, Drag sensors (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.7.4), for more details.
When the sensor generates an isActive TRUE event, it grabs all further motion events from the pointing device until it is released and generates an isActive FALSE event (other pointing-device sensors shall not generate events during this time). Motion of the pointing device while isActive is TRUE is termed a 'drag'. If a 2D pointing device is in use, isActive events will typically reflect the state of the primary button associated with the device (i.e., isActive is TRUE when the primary button is pressed and FALSE when it is released). If a 3D pointing device (e.g., wand) is in use, isActive events will typically reflect whether the pointer is within (or in contact with) the sensor's geometry.
While the pointing device is activated, trackPoint_changed and rotation_changed events are output. trackPoint_changed events represent the unclamped intersection points on the surface of the invisible sphere. If the pointing device is dragged off the sphere while activated, browsers may interpret this in a variety of ways (e.g., clamp all values to the sphere or continue to rotate as the point is dragged away from the sphere).
Each movement of the pointing device while isActive is TRUE generates trackPoint_changed and rotation_changed events. Further information about this behaviour can be found in 4.6.7.3 (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.7.3), Pointing-device sensors, 4.6.7.4, Drag sensors (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.7.4), and 4.6.7.5, Activating and manipulating sensors (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.7.5).
Constructor & Destructor Documentation¶
SoVRMLSphereSensor::SoVRMLSphereSensor (void)¶
Constructor.
SoVRMLSphereSensor::~SoVRMLSphereSensor () [protected], [virtual]¶
Destructor.
Member Function Documentation¶
SoType SoVRMLSphereSensor::getTypeId (void) const [virtual]¶
Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.
Usage example:
void foo(SoNode * node) {
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
} }
For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.
For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.
Reimplemented from SoVRMLDragSensor.
const SoFieldData * SoVRMLSphereSensor::getFieldData (void) const [protected], [virtual]¶
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.
Reimplemented from SoVRMLDragSensor.
SbBool SoVRMLSphereSensor::dragStart (void) [protected], [virtual]¶
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when dragger is selected (picked) by the user.
Implements SoVRMLDragSensor.
void SoVRMLSphereSensor::drag (void) [protected], [virtual]¶
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when user drags the mouse after picking the dragger.
Implements SoVRMLDragSensor.
void SoVRMLSphereSensor::dragFinish (void) [protected], [virtual]¶
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Called when mouse button is released after picking and interacting with the
dragger.
Implements SoVRMLDragSensor.
Member Data Documentation¶
SoSFRotation SoVRMLSphereSensor::offset¶
The sensor rotation value.
SoSFRotation SoVRMLSphereSensor::rotation_changed¶
An eventOut that is updated during interaction. Holds the differense between the current rotation and the sensor rotation value.
Author¶
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