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# SoTransformerDragger Class Reference
[Draggers]

The SoTransformerDragger provides geometry for translation, scaling and rotations. More...

`#include <Inventor/draggers/SoTransformerDragger.h>`

Inheritance diagram for SoTransformerDragger:

List of all members.

## Public Types
enum | State
## Public Methods
| SoTransformerDragger (void)
State | getCurrentState (void)
## Static Public Methods
void | initClass (void)
## Public Attributes
SoSFRotation | rotation
SoSFVec3f | translation
SoSFVec3f | scaleFactor
## Protected Methods
| ~SoTransformerDragger ()
virtual SbBool | setUpConnections (SbBool onoff, SbBool doitalways=FALSE)
virtual void | setDefaultOnNonWritingFields (void)
void | dragStart (void)
void | drag (void)
void | dragFinish (void)
int | getMouseGestureDirection (SbBool x_ok, SbBool y_ok, SbBool z_ok)
## Static Protected Methods
void | startCB (void *f, SoDragger *d)
void | motionCB (void *f, SoDragger *d)
void | finishCB (void *f, SoDragger *d)
void | metaKeyChangeCB (void *, SoDragger *)
void | fieldSensorCB (void *f, SoSensor *s)
void | valueChangedCB (void *f, SoDragger *d)
int | getIgnoreAxis (SbVec2f axis[3][2], SbBool x_ok, SbBool y_ok, SbBool z_ok)
void | makeMinorAxisPerpendicularIfColinear (SbVec2f origin, SbVec2f axisends[3][2], int index_a, int index_b)
SbBool | isColinear (SbVec2f a1[2], SbVec2f a2[2], int pixels)
## Protected Attributes
SoFieldSensor * | translFieldSensor
SoFieldSensor * | scaleFieldSensor
SoFieldSensor * | rotateFieldSensor
SoNodeList | antiSquishList

## Detailed Description

The SoTransformerDragger provides geometry for translation, scaling and rotations.

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

Translate the dragger by clicking and dragging any of the (invisible) sides. Translation will default be done in the plane of the side the end-user selected. The user can hold down a `SHIFT` key to lock translation to a single of the axes in the plane. By holding down a `CTRL` key instead, translation can be done along the plane's normal vector.

Scaling is done by dragging the corner cubes. By default, uniform scaling will be done. Hold down `SHIFT` before selecting any of the corners to do non-uniform scaling. Uniform scaling towards a corner-point can be accomplished by holding down `CTRL` before clicking and dragging one of the cubes.

Rotation is done by dragging any of the 6 end-markers of the axis cross. The initial drag direction decides which orientation the rotation will be done in. Hold down `SHIFT` to do free-form rotation around the sphere instead.

This is a big and complex dragger which needs a fair amount of proper documentation when provided in end-user applications. If what you are trying to accomplish in your application does not really demand most of the features of this dragger, you are advised to investigate whether or not any of the less complex draggers can fulfill your requirements -- so you can provide an as simple as possible user interface to your end-users.

For the application programmer's convenience, the Coin library also provides a manipulator class called SoTransformerManip, which wraps the SoTransformerDragger into the necessary mechanisms for making direct insertion of this dragger into a scenegraph possible with very little effort.

See also:
  SoTransformerManip

## Member Enumeration Documentation

enum SoTransformerDragger::State

| The various possible states the dragger might be in at any given time. That is: either SoTransformerDragger::INACTIVE if there's no interaction, or any of the other values to indicate what operation the end-user is currently executing.

## Constructor & Destructor Documentation

SoTransformerDragger::SoTransformerDragger | ( | 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 SoTransformerDragger
      -->"this"
            "callbackList"
            "topSeparator"
               "motionMatrix"
      -->      "surroundScale"
      -->      "overallStyle"
               "geomSeparator"
      -->         "axisFeedbackSep"
      -->            "axisFeedbackLocation"
      -->            "xAxisFeedbackSwitch"
      -->               "xAxisFeedbackActive"
      -->               "xAxisFeedbackSelect"
      -->               "xCrosshairFeedback"
      -->            "yAxisFeedbackSwitch"
      -->               "yAxisFeedbackActive"
      -->               "yAxisFeedbackSelect"
      -->               "yCrosshairFeedback"
      -->            "zAxisFeedbackSwitch"
      -->               "zAxisFeedbackActive"
      -->               "zAxisFeedbackSelect"
      -->               "zCrosshairFeedback"
      -->         "translateBoxFeedbackSep"
      -->            "translateBoxFeedbackSwitch"
      -->               "translateBoxFeedbackRotation"
      -->               "translateBoxFeedback"
      -->         "scaleBoxFeedbackSwitch"
      -->            "scaleBoxFeedback"
      -->         "posXWallFeedbackSwitch"
      -->            "posXWallFeedback"
      -->            "posXRoundWallFeedback"
      -->         "posYWallFeedbackSwitch"
      -->            "posYWallFeedback"
      -->            "posYRoundWallFeedback"
      -->         "posZWallFeedbackSwitch"
      -->            "posZWallFeedback"
      -->            "posZRoundWallFeedback"
      -->         "negXWallFeedbackSwitch"
      -->            "negXWallFeedback"
      -->            "negXRoundWallFeedback"
      -->         "negYWallFeedbackSwitch"
      -->            "negYWallFeedback"
      -->            "negYRoundWallFeedback"
      -->         "negZWallFeedbackSwitch"
      -->            "negZWallFeedback"
      -->            "negZRoundWallFeedback"
      -->         "radialFeedbackSwitch"
      -->            "radialFeedback"
      -->      "translatorSep"
      -->         "translator1Switch"
      -->            "translator1LocateGroup"
      -->               "translator1"
      -->            "translator1Active"
      -->         "translator2Switch"
      -->            "translator2LocateGroup"
      -->               "translator2"
      -->            "translator2Active"
      -->         "translator3Switch"
      -->            "translator3LocateGroup"
      -->               "translator3"
      -->            "translator3Active"
      -->         "translator4Switch"
      -->            "translator4LocateGroup"
      -->               "translator4"
      -->            "translator4Active"
      -->         "translator5Switch"
      -->            "translator5LocateGroup"
      -->               "translator5"
      -->            "translator5Active"
      -->         "translator6Switch"
      -->            "translator6LocateGroup"
      -->               "translator6"
      -->            "translator6Active"
      -->      "rotatorSep"
      -->         "rotator1Switch"
      -->            "rotator1LocateGroup"
      -->               "rotator1"
      -->            "rotator1Active"
      -->         "rotator2Switch"
      -->            "rotator2LocateGroup"
      -->               "rotator2"
      -->            "rotator2Active"
      -->         "rotator3Switch"
      -->            "rotator3LocateGroup"
      -->               "rotator3"
      -->            "rotator3Active"
      -->         "rotator4Switch"
      -->            "rotator4LocateGroup"
      -->               "rotator4"
      -->            "rotator4Active"
      -->         "rotator5Switch"
      -->            "rotator5LocateGroup"
      -->               "rotator5"
      -->            "rotator5Active"
      -->         "rotator6Switch"
      -->            "rotator6LocateGroup"
      -->               "rotator6"
      -->            "rotator6Active"
      -->      "scaleSep"
      -->         "scale1Switch"
      -->            "scale1LocateGroup"
      -->               "scale1"
      -->            "scale1Active"
      -->         "scale2Switch"
      -->            "scale2LocateGroup"
      -->               "scale2"
      -->            "scale2Active"
      -->         "scale3Switch"
      -->            "scale3LocateGroup"
      -->               "scale3"
      -->            "scale3Active"
      -->         "scale4Switch"
      -->            "scale4LocateGroup"
      -->               "scale4"
      -->            "scale4Active"
      -->         "scale5Switch"
      -->            "scale5LocateGroup"
      -->               "scale5"
      -->            "scale5Active"
      -->         "scale6Switch"
      -->            "scale6LocateGroup"
      -->               "scale6"
      -->            "scale6Active"
      -->         "scale7Switch"
      -->            "scale7LocateGroup"
      -->               "scale7"
      -->            "scale7Active"
      -->         "scale8Switch"
      -->            "scale8LocateGroup"
      -->               "scale8"
      -->            "scale8Active"
      -->      "circleFeedbackSep"
      -->         "circleFeedbackTransformSwitch"
      -->            "circleFeedbackAntiSquish"
      -->            "circleFeedbackTransform"
      -->         "xCircleFeedbackSwitch"
      -->            "xCircleFeedback"
      -->         "yCircleFeedbackSwitch"
      -->            "yCircleFeedback"
      -->         "zCircleFeedbackSwitch"
      -->            "zCircleFeedback"
(See SoBaseKit::printDiagram() for information about the output formatting.) Detailed information on catalog parts:
      CLASS SoTransformerDragger
      PVT   "this",  SoTransformerDragger  ---
            "callbackList",  SoNodeKitListPart [ SoCallback, SoEventCallback ]
      PVT   "topSeparator",  SoSeparator  ---
      PVT   "motionMatrix",  SoMatrixTransform  ---
            "surroundScale",  SoSurroundScale  ---
      PVT   "overallStyle",  SoGroup  ---
      PVT   "geomSeparator",  SoSeparator  ---
      PVT   "translatorSep",  SoSeparator  ---
      PVT   "translator1Switch",  SoSwitch  ---
      PVT   "translator1LocateGroup",  SoLocateHighlight  ---
            "translator1",  SoSeparator  ---
            "translator1Active",  SoSeparator  ---
      PVT   "translator2Switch",  SoSwitch  ---
      PVT   "translator2LocateGroup",  SoLocateHighlight  ---
            "translator2",  SoSeparator  ---
            "translator2Active",  SoSeparator  ---
      PVT   "translator3Switch",  SoSwitch  ---
      PVT   "translator3LocateGroup",  SoLocateHighlight  ---
            "translator3",  SoSeparator  ---
            "translator3Active",  SoSeparator  ---
      PVT   "translator4Switch",  SoSwitch  ---
      PVT   "translator4LocateGroup",  SoLocateHighlight  ---
            "translator4",  SoSeparator  ---
            "translator4Active",  SoSeparator  ---
      PVT   "translator5Switch",  SoSwitch  ---
      PVT   "translator5LocateGroup",  SoLocateHighlight  ---
            "translator5",  SoSeparator  ---
            "translator5Active",  SoSeparator  ---
      PVT   "translator6Switch",  SoSwitch  ---
      PVT   "translator6LocateGroup",  SoLocateHighlight  ---
            "translator6",  SoSeparator  ---
            "translator6Active",  SoSeparator  ---
      PVT   "rotatorSep",  SoSeparator  ---
      PVT   "rotator1Switch",  SoSwitch  ---
      PVT   "rotator1LocateGroup",  SoLocateHighlight  ---
            "rotator1",  SoSeparator  ---
            "rotator1Active",  SoSeparator  ---
      PVT   "rotator2Switch",  SoSwitch  ---
      PVT   "rotator2LocateGroup",  SoLocateHighlight  ---
            "rotator2",  SoSeparator  ---
            "rotator2Active",  SoSeparator  ---
      PVT   "rotator3Switch",  SoSwitch  ---
      PVT   "rotator3LocateGroup",  SoLocateHighlight  ---
            "rotator3",  SoSeparator  ---
            "rotator3Active",  SoSeparator  ---
      PVT   "rotator4Switch",  SoSwitch  ---
      PVT   "rotator4LocateGroup",  SoLocateHighlight  ---
            "rotator4",  SoSeparator  ---
            "rotator4Active",  SoSeparator  ---
      PVT   "rotator5Switch",  SoSwitch  ---
      PVT   "rotator5LocateGroup",  SoLocateHighlight  ---
            "rotator5",  SoSeparator  ---
            "rotator5Active",  SoSeparator  ---
      PVT   "rotator6Switch",  SoSwitch  ---
      PVT   "rotator6LocateGroup",  SoLocateHighlight  ---
            "rotator6",  SoSeparator  ---
            "rotator6Active",  SoSeparator  ---
      PVT   "scaleSep",  SoSeparator  ---
      PVT   "scale1Switch",  SoSwitch  ---
      PVT   "scale1LocateGroup",  SoLocateHighlight  ---
            "scale1",  SoSeparator  ---
            "scale1Active",  SoSeparator  ---
      PVT   "scale2Switch",  SoSwitch  ---
      PVT   "scale2LocateGroup",  SoLocateHighlight  ---
            "scale2",  SoSeparator  ---
            "scale2Active",  SoSeparator  ---
      PVT   "scale3Switch",  SoSwitch  ---
      PVT   "scale3LocateGroup",  SoLocateHighlight  ---
            "scale3",  SoSeparator  ---
            "scale3Active",  SoSeparator  ---
      PVT   "scale4Switch",  SoSwitch  ---
      PVT   "scale4LocateGroup",  SoLocateHighlight  ---
            "scale4",  SoSeparator  ---
            "scale4Active",  SoSeparator  ---
      PVT   "scale5Switch",  SoSwitch  ---
      PVT   "scale5LocateGroup",  SoLocateHighlight  ---
            "scale5",  SoSeparator  ---
            "scale5Active",  SoSeparator  ---
      PVT   "scale6Switch",  SoSwitch  ---
      PVT   "scale6LocateGroup",  SoLocateHighlight  ---
            "scale6",  SoSeparator  ---
            "scale6Active",  SoSeparator  ---
      PVT   "scale7Switch",  SoSwitch  ---
      PVT   "scale7LocateGroup",  SoLocateHighlight  ---
            "scale7",  SoSeparator  ---
            "scale7Active",  SoSeparator  ---
      PVT   "scale8Switch",  SoSwitch  ---
      PVT   "scale8LocateGroup",  SoLocateHighlight  ---
            "scale8",  SoSeparator  ---
            "scale8Active",  SoSeparator  ---
      PVT   "circleFeedbackSep",  SoSeparator  ---
      PVT   "circleFeedbackTransformSwitch",  SoSwitch  ---
      PVT   "circleFeedbackAntiSquish",  SoAntiSquish  ---
      PVT   "circleFeedbackTransform",  SoTransform  ---
      PVT   "xCircleFeedbackSwitch",  SoSwitch  ---
            "xCircleFeedback",  SoSeparator  ---
      PVT   "yCircleFeedbackSwitch",  SoSwitch  ---
            "yCircleFeedback",  SoSeparator  ---
      PVT   "zCircleFeedbackSwitch",  SoSwitch  ---
            "zCircleFeedback",  SoSeparator  ---
      PVT   "axisFeedbackSep",  SoSeparator  ---
      PVT   "axisFeedbackLocation",  SoTranslation  ---
      PVT   "xAxisFeedbackSwitch",  SoSwitch  ---
            "xAxisFeedbackActive",  SoSeparator  ---
            "xAxisFeedbackSelect",  SoSeparator  ---
            "xCrosshairFeedback",  SoSeparator  ---
      PVT   "yAxisFeedbackSwitch",  SoSwitch  ---
            "yAxisFeedbackActive",  SoSeparator  ---
            "yAxisFeedbackSelect",  SoSeparator  ---
            "yCrosshairFeedback",  SoSeparator  ---
      PVT   "zAxisFeedbackSwitch",  SoSwitch  ---
            "zAxisFeedbackActive",  SoSeparator  ---
            "zAxisFeedbackSelect",  SoSeparator  ---
            "zCrosshairFeedback",  SoSeparator  ---
      PVT   "translateBoxFeedbackSep",  SoSeparator  ---
      PVT   "translateBoxFeedbackSwitch",  SoSwitch  ---
      PVT   "translateBoxFeedbackRotation",  SoRotation  ---
            "translateBoxFeedback",  SoSeparator  ---
      PVT   "scaleBoxFeedbackSwitch",  SoSwitch  ---
            "scaleBoxFeedback",  SoSeparator  ---
      PVT   "posXWallFeedbackSwitch",  SoSwitch  ---
            "posXWallFeedback",  SoSeparator  ---
            "posXRoundWallFeedback",  SoSeparator  ---
      PVT   "posYWallFeedbackSwitch",  SoSwitch  ---
            "posYWallFeedback",  SoSeparator  ---
            "posYRoundWallFeedback",  SoSeparator  ---
      PVT   "posZWallFeedbackSwitch",  SoSwitch  ---
            "posZWallFeedback",  SoSeparator  ---
            "posZRoundWallFeedback",  SoSeparator  ---
      PVT   "negXWallFeedbackSwitch",  SoSwitch  ---
            "negXWallFeedback",  SoSeparator  ---
            "negXRoundWallFeedback",  SoSeparator  ---
      PVT   "negYWallFeedbackSwitch",  SoSwitch  ---
            "negYWallFeedback",  SoSeparator  ---
            "negYRoundWallFeedback",  SoSeparator  ---
      PVT   "negZWallFeedbackSwitch",  SoSwitch  ---
            "negZWallFeedback",  SoSeparator  ---
            "negZRoundWallFeedback",  SoSeparator  ---
      PVT   "radialFeedbackSwitch",  SoSwitch  ---
            "radialFeedback",  SoSeparator  ---
(See SoBaseKit::printTable() for information about the output formatting.)

SoTransformerDragger::~SoTransformerDragger | ( |  | ) | `[protected]`

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

## Member Function Documentation

void SoTransformerDragger::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.

SoTransformerDragger::State SoTransformerDragger::getCurrentState | ( | void |  | ) |

| Returns an indicator for the current operation executed on the dragger by the end-user -- or SoTransformerDragger::INACTIVE if none.

SbBool SoTransformerDragger::setUpConnections | ( | SbBool | onoff,
|  | SbBool | doitalways = FALSE
| ) | `[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.

void SoTransformerDragger::setDefaultOnNonWritingFields | ( | void |  | ) | `[protected, virtual]`

| (Be aware that this method is unlikely to be of interest to the application programmer who does not want to extend the library with new custom nodekits or draggers. If you indeed are writing extensions, see the information in the SoBaseKit class documentation.) A virtual method that should call SoField::setDefault() with argument `TRUE` on part fields that should not be written upon scenegraph export operations. This is typically done when: field value is `NULL` and part is `NULL` by default it is a leaf SoGroup or SoSeparator node with no children it is a leaf listpart with no children and a SoGroup or SoSeparator container it is a non-leaf part and it's of SoGroup type and all fields are at their default values Subclasses should usually override this to do additional settings for new member fields. From the subclass, do remember to call "upwards" to your superclass' setDefaultOnNonWritingFields() method. Reimplemented from SoDragger.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

void SoTransformerDragger::metaKeyChangeCB | ( | void * | ,
|  | 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.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

void SoTransformerDragger::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.

int SoTransformerDragger::getMouseGestureDirection | ( | SbBool | x_ok,
|  | SbBool | y_ok,
|  | SbBool | z_ok
| ) | `[protected]`

| Not implemented in Coin; should probably not have been public in the Open Inventor API. We'll consider to implement it if requested.

int SoTransformerDragger::getIgnoreAxis | ( | SbVec2f | axis[3][2],
|  | SbBool | x_ok,
|  | SbBool | y_ok,
|  | SbBool | z_ok
| ) | `[static, protected]`

| Not implemented in Coin; should probably not have been public in the Open Inventor API. We'll consider to implement it if requested.

void SoTransformerDragger::makeMinorAxisPerpendicularIfColinear | ( | SbVec2f | origin,
|  | SbVec2f | axisends[3][2],
|  | int | index_a,
|  | int | index_b
| ) | `[static, protected]`

| Not implemented in Coin; should probably not have been public in the Open Inventor API. We'll consider to implement it if requested.

SbBool SoTransformerDragger::isColinear | ( | SbVec2f | a1[2],
|  | SbVec2f | a2[2],
|  | int | pixels
| ) | `[static, protected]`

| Not implemented in Coin; should probably not have been public in the Open Inventor API. We'll consider to implement it if requested.

## Member Data Documentation

SoSFRotation SoTransformerDragger::rotation

| This field is continuously updated to contain the orientation of the dragger.

SoSFVec3f SoTransformerDragger::translation

| The dragger's offset position from the local origo.

SoSFVec3f SoTransformerDragger::scaleFactor

| Continuously updated to contain the current vector of scaling along the X, Y and Z axes.

SoFieldSensor * SoTransformerDragger::translFieldSensor`[protected]`

| This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoFieldSensor * SoTransformerDragger::scaleFieldSensor`[protected]`

| This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoFieldSensor * SoTransformerDragger::rotateFieldSensor`[protected]`

| This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoNodeList SoTransformerDragger::antiSquishList`[protected]`

| This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

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

- SoTransformerDragger.h
- SoTransformerDragger.cpp