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SoScale2UniformDragger.3coin2

NAME

SoScale2UniformDragger -

The SoScale2UniformDragger class provides a mechanism for the end-user to scale in two dimensions.

Here's how the dragger looks with its default geometry in the inactive state:.

SYNOPSIS

#include <Inventor/draggers/SoScale2UniformDragger.h>

Inherits SoDragger.

Public Member Functions

SoScale2UniformDragger (void)

Static Public Member Functions

static void initClass (void)

Public Attributes

SoSFVec3f scaleFactor

Protected Member Functions

~SoScale2UniformDragger ()

virtual SbBool setUpConnections (SbBool onoff, SbBool doitalways=0)

void dragStart (void)

void drag (void)

void dragFinish (void)

Static Protected Member Functions

static void startCB (void *f, SoDragger *d)

static void motionCB (void *f, SoDragger *d)

static void finishCB (void *f, SoDragger *d)

static void fieldSensorCB (void *f, SoSensor *s)

static void valueChangedCB (void *f, SoDragger *d)

Protected Attributes

SoFieldSensor * fieldSensor

SbLineProjector * lineProj

Detailed Description

The SoScale2UniformDragger class provides a mechanism for the end-user to scale in two dimensions.

Here's how the dragger looks with its default geometry in the inactive state:.

  

Use this dragger to allow the end-user of your application to scale along the X-axis and the Y-axis. (Use a transformation node in front of the dragger to position it and re-orient it to scale in any plane.)

Scaling with this dragger can only be done in a uniform manner, ie the X component of the SoScale2UniformDragger::scaleFactor will always equal the Y component.

For non-uniform scaling operations in 2 dimensions, use the SoScale2Dragger.

See also:

SoScaleUniformDragger

Constructor & Destructor Documentation

SoScale2UniformDragger::SoScale2UniformDragger (void)Default constructor, sets up the dragger nodekit catalog with the interaction and feedback geometry.

Node kit structure (new entries versus parent class marked with arrow prefix):

 
   CLASS SoScale2UniformDragger
   -->"this"
         "callbackList"
         "topSeparator"
            "motionMatrix"
            "geomSeparator"
   -->         "scalerSwitch"
   -->            "scaler"
   -->            "scalerActive"
   -->         "feedbackSwitch"
   -->            "feedback"
   -->            "feedbackActive"
   .fi
 
 
 (See SoBaseKit::printDiagram() for information about the output formatting.)
 
 Detailed information on catalog parts:
 
 
 
   CLASS SoScale2UniformDragger
   PVT   "this",  SoScale2UniformDragger  --- 
         "callbackList",  SoNodeKitListPart [ SoCallback, SoEventCallback ] 
   PVT   "topSeparator",  SoSeparator  --- 
   PVT   "motionMatrix",  SoMatrixTransform  --- 
   PVT   "geomSeparator",  SoSeparator  --- 
   PVT   "scalerSwitch",  SoSwitch  --- 
         "scaler",  SoSeparator  --- 
         "scalerActive",  SoSeparator  --- 
   PVT   "feedbackSwitch",  SoSwitch  --- 
         "feedback",  SoSeparator  --- 
         "feedbackActive",  SoSeparator  --- 
   .fi
 
 
 (See SoBaseKit::printTable() for information about the output formatting.) 
 
 References SoDragger::addFinishCallback(), SoDragger::addMotionCallback(), SoDragger::addStartCallback(), SoDragger::addValueChangedCallback(), fieldSensor, fieldSensorCB(), finishCB(), lineProj, motionCB(), SoInteractionKit::readDefaultParts(), scaleFactor, SoInteractionKit::setPartAsDefault(), SoDelayQueueSensor::setPriority(), SoInteractionKit::setSwitchValue(), setUpConnections(), startCB(), and valueChangedCB().
 

 

SoScale2UniformDragger::~SoScale2UniformDragger () [protected]Protected destructor.

(Dragger classes are derived from SoBase, so they are reference counted and automatically destroyed when their reference count goes to 0.)

References fieldSensor, and lineProj.

Member Function Documentation

void SoScale2UniformDragger::initClass (void) [static]Initializes type system for this dragger class.

Application programmers should usually not have to invoke this method, see documentation of SoInteraction::init().

Reimplemented from SoDragger.

SbBool SoScale2UniformDragger::setUpConnections (SbBool onoff, SbBool doitalways = 0) [protected, virtual]Sets up all internal connections for instances of this class.

(This method will usually not be of interest to the application programmer, unless you want to extend the library with new custom nodekits or dragger classes. If so, see the SoBaseKit class documentation.)

Reimplemented from SoInteractionKit.

References SoFieldSensor::attach(), SoBaseKit::connectionsSetUp, SoFieldSensor::detach(), fieldSensor, fieldSensorCB(), SoFieldSensor::getAttachedField(), scaleFactor, and SoInteractionKit::setUpConnections().

Referenced by SoScale2UniformDragger().

void SoScale2UniformDragger::startCB (void * f, SoDragger * d) [static, protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

References dragStart().

Referenced by SoScale2UniformDragger().

void SoScale2UniformDragger::motionCB (void * f, SoDragger * d) [static, protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

References drag().

Referenced by SoScale2UniformDragger().

void SoScale2UniformDragger::finishCB (void * f, SoDragger * d) [static, protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

References dragFinish().

Referenced by SoScale2UniformDragger().

void SoScale2UniformDragger::fieldSensorCB (void * d, SoSensor * s) [static, protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Reimplemented from SoInteractionKit.

References SoDragger::getMotionMatrix(), SbMatrix::getTransform(), scaleFactor, SoDragger::setMotionMatrix(), and SbMatrix::setTransform().

Referenced by setUpConnections(), and SoScale2UniformDragger().

void SoScale2UniformDragger::valueChangedCB (void * f, SoDragger * d) [static, protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

References SoFieldSensor::attach(), SoFieldSensor::detach(), fieldSensor, SoDragger::getMotionMatrix(), SbMatrix::getTransform(), and scaleFactor.

Referenced by SoScale2UniformDragger().

void SoScale2UniformDragger::dragStart (void) [protected]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.

References SoDragger::getLocalStartingPoint(), lineProj, SbLineProjector::setLine(), and SoInteractionKit::setSwitchValue().

Referenced by startCB().

void SoScale2UniformDragger::drag (void) [protected]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.

References SoDragger::appendScale(), SbVec3f::dot(), SoDragger::getLocalStartingPoint(), SoDragger::getLocalToWorldMatrix(), SoDragger::getNormalizedLocaterPosition(), SoDragger::getStartMotionMatrix(), SoDragger::getViewVolume(), SbVec3f::length(), lineProj, SbLineProjector::project(), SoDragger::setMotionMatrix(), SbProjector::setViewVolume(), and SbProjector::setWorkingSpace().

Referenced by motionCB().

void SoScale2UniformDragger::dragFinish (void) [protected]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.

References SoInteractionKit::setSwitchValue().

Referenced by finishCB().

Member Data Documentation

SoSFVec3f SoScale2UniformDragger::scaleFactorContinuously updated to contain the current vector of scaling along the X, Y and Z axes.

For the SoScale2UniformDragger, only the X and Y components are used, the Z component will always be equal to 1 (ie no scaling).

Referenced by fieldSensorCB(), setUpConnections(), SoScale2UniformDragger(), and valueChangedCB().

SoFieldSensor * SoScale2UniformDragger::fieldSensor [protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Reimplemented from SoInteractionKit.

Referenced by setUpConnections(), SoScale2UniformDragger(), valueChangedCB(), and ~SoScale2UniformDragger().

SbLineProjector * SoScale2UniformDragger::lineProj [protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Referenced by drag(), dragStart(), SoScale2UniformDragger(), and ~SoScale2UniformDragger().

Author

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