SoTransform(3)

๐Ÿ“ฆ
version 4.0.10 ยท 4 versions
, in fedora 43, fedora 44

๐Ÿฆ‹ SoTransform(3) โ€” the Coin manual, bestie edition ๐Ÿฆ‹

okay so. this is the manpage for SoTransform, from Coin. she is the all-purpose transformation node type โ€” like the little black dress of the scene graph, she does everything ๐Ÿ’… and we're doing this in two parts, so don't wander off.


๐Ÿ’– NAME ๐Ÿ’–

SoTransform โ€” the "all-purpose" transformation node type.

that's the actual description and honestly? accurate. she ate.


โœจ SYNOPSIS โœจ

#include <Inventor/nodes/SoTransform.h>

Inherits SoTransformation.

Inherited by SoTransformManip.


๐ŸŒธ Public Member Functions ๐ŸŒธ

the stuff she does herself, no middleman, no cap:

  • virtual SoType getTypeId (void) const
  • SoTransform (void)
  • void pointAt (const SbVec3f &frompoint, const SbVec3f &topoint)
  • void getScaleSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
  • void getRotationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
  • void getTranslationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) const
  • void multLeft (const SbMatrix &mat)
  • void multRight (const SbMatrix &mat)
  • void combineLeft (SoTransformation *nodeonright)
  • void combineRight (SoTransformation *nodeonleft)
  • void setMatrix (const SbMatrix &mat)
  • void recenter (const SbVec3f &newcenter)
  • virtual void doAction (SoAction *action)
  • virtual void GLRender (SoGLRenderAction *action)
  • virtual void callback (SoCallbackAction *action)
  • virtual void getBoundingBox (SoGetBoundingBoxAction *action)
  • virtual void getMatrix (SoGetMatrixAction *action)
  • virtual void pick (SoPickAction *action)
  • virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

๐ŸŽ€ Public Member Functions inherited from SoNode ๐ŸŽ€

everything she gets handed down from SoNode, iconic behavior:

  • 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 GLRenderBelowPath (SoGLRenderAction *action)
  • virtual void GLRenderInPath (SoGLRenderAction *action)
  • virtual void GLRenderOffPath (SoGLRenderAction *action)
  • virtual void handleEvent (SoHandleEventAction *action)
  • virtual void rayPick (SoRayPickAction *action)
  • virtual void search (SoSearchAction *action)
  • virtual void write (SoWriteAction *action)
  • virtual void audioRender (SoAudioRenderAction *action)
  • virtual void grabEventsSetup (void)
  • virtual void grabEventsCleanup (void)
  • virtual void startNotify (void)
  • virtual void notify (SoNotList *l)
  • SbUniqueId 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

๐Ÿงš Public Member Functions inherited from SoFieldContainer ๐Ÿงš

the field-management side of the family tree:

  • 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

๐Ÿ’œ Public Member Functions inherited from SoBase ๐Ÿ’œ

the O.G. base class energy:

  • 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 โ€” tells you TRUE if the type of this object is either the same type as type, or inherited from type.
  • 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

โญ Static Public Member Functions โญ

static besties, shared by everybody, no instance needed:

  • static SoType getClassTypeId (void)
  • static void initClass (void) โ€” sets up the initialization for data that's common to all instances of this class, like submitting the necessary info to the Coin type system.

๐ŸŒˆ Static Public Member Functions inherited from SoTransformation ๐ŸŒˆ

  • static SoType getClassTypeId (void)
  • static void initClass (void) โ€” again: handles the setup for the data shared by every instance of this class, which includes handing the needed info over to the Coin type system.

๐Ÿ”ฅ Static Public Member Functions inherited from SoNode ๐Ÿ”ฅ

  • 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) โ€” yep, same deal: sets up initialization for the data common to all instances of this class, like submitting the necessary information to the Coin type system.
  • static void initClasses (void)
  • static SbUniqueId 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)

๐Ÿ“ Static Public Member Functions inherited from SoFieldContainer ๐Ÿ“

  • static void initClass (void) โ€” the usual: initializes the data shared by all instances of this class, including submitting the required information to the Coin type system.
  • static SoType getClassTypeId (void) โ€” this static method hands you back the SoType object that's associated with objects of this class.
  • 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)

๐Ÿซถ Static Public Member Functions inherited from SoBase ๐Ÿซถ

  • static void initClass (void) โ€” you guessed it: sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
  • static SoType getClassTypeId (void) โ€” static method, returns the SoType object associated with objects of this class.
  • 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)

๐Ÿ‘‘ Public Attributes ๐Ÿ‘‘

these are the fields you actually set, the whole reason she's famous:

  • SoSFVec3f translation
  • SoSFRotation rotation
  • SoSFVec3f scaleFactor
  • SoSFRotation scaleOrientation
  • SoSFVec3f center

๐Ÿ™ˆ Protected Member Functions ๐Ÿ™ˆ

for her and her subclasses only, sorry bestie:

  • virtual const SoFieldData * getFieldData (void) const
  • virtual ~SoTransform ()

๐Ÿ’€ Protected Member Functions inherited from SoTransformation ๐Ÿ’€

  • SoTransformation (void)
  • virtual ~SoTransformation ()

๐ŸŒธ Protected Member Functions inherited from SoNode ๐ŸŒธ

  • SoNode (void)
  • virtual ~SoNode ()
  • virtual SbBool readInstance (SoInput *in, unsigned short flags)

๐ŸŽ€ Protected Member Functions inherited from SoFieldContainer ๐ŸŽ€

  • SoFieldContainer (void)
  • virtual ~SoFieldContainer ()

โœจ Protected Member Functions inherited from SoBase โœจ

  • 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
  • virtual SoNotRec createNotRec (void)

โญ Static Protected Member Functions โญ

  • static const SoFieldData ** getFieldDataPtr (void)

๐Ÿงš Static Protected Member Functions inherited from SoTransformation ๐Ÿงš

  • static const SoFieldData ** getFieldDataPtr (void)

๐Ÿ’œ Static Protected Member Functions inherited from SoNode ๐Ÿ’œ

  • 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)

๐Ÿฆ‹ Static Protected Member Functions inherited from SoBase ๐Ÿฆ‹

  • static uint32_t getCurrentWriteCounter (void)
  • static void staticDataLock (void)
  • static void staticDataUnlock (void)

๐ŸŒˆ Additional Inherited Members ๐ŸŒˆ

๐Ÿ’– Public Types inherited from SoNode ๐Ÿ’–

the big enum of node-type flags, copy it exactly bestie, every single one matters:

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, COIN_4_0 = 0x20000 }

๐ŸŽ€ Protected Types inherited from SoBase ๐ŸŽ€

  • enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }

๐Ÿ”ฅ Protected Attributes inherited from SoNode ๐Ÿ”ฅ

  • SbUniqueId uniqueId

๐Ÿ“ Protected Attributes inherited from SoFieldContainer ๐Ÿ“

  • SbBool isBuiltIn

๐Ÿ‘‘ Static Protected Attributes inherited from SoNode ๐Ÿ‘‘

  • static SbUniqueId nextUniqueId = 1
  • static int nextActionMethodIndex = 0

โœจ Detailed Description โœจ

Okay so bestie, <pink>SoTransform</pink> is like the all-purpose transformation node type. ๐Ÿ’…

Like <pink>SoMatrixTransform</pink>, nodes of this type give the application programmer maximum flexibility when specifying geometry transformations in a scene graph. But if you want to set and keep the various components of the transformation matrix in separate entities, this node type is preferable, though. ๐ŸŽ€

The order of operations is: first scaling is done, then rotation, then translation. Periodt. ๐Ÿ”ฅ

FILE FORMAT/DEFAULTS:

       Transform {
           translation 0 0 0
           rotation 0 0 1  0
           scaleFactor 1 1 1
           scaleOrientation 0 0 1  0
           center 0 0 0
       }

โœจ Constructor & Destructor Documentation โœจ

SoTransform::SoTransform (void )

Constructor. Just a constructor, bestie. ๐Ÿ’–

SoTransform::~SoTransform () [protected], [virtual]

Destructor. It's protected and virtual. ๐Ÿ‘‘

โœจ Member Function Documentation โœจ

SoType SoTransform::getClassTypeId (void ) [static]

This static method returns the <cyan>SoType</cyan> object associated with objects of this class. โœจ

SoType SoTransform::getTypeId (void ) const [virtual]

Returns the type identification of an object derived from a class inheriting <cyan>SoBase</cyan>. This is used for runtime type checking and "downward" casting. ๐Ÿฆ‹

Reimplemented from <purple>SoTransformation</purple>.

Reimplemented in <pink>SoCenterballManip</pink>, <pink>SoHandleBoxManip</pink>, <pink>SoJackManip</pink>, <pink>SoTabBoxManip</pink>, <pink>SoTrackballManip</pink>, <pink>SoTransformBoxManip</pink>, <pink>SoTransformerManip</pink>, and <pink>SoTransformManip</pink>.

const SoFieldData ** SoTransform::getFieldDataPtr (void ) [static], [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. ๐Ÿ™ˆ

Returns the <cyan>SoFieldData</cyan> class which holds information about fields in this node. ๐ŸŽ€

const SoFieldData * SoTransform::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. ๐Ÿ’€

Reimplemented from <purple>SoTransformation</purple>.

Reimplemented in <pink>SoCenterballManip</pink>, <pink>SoHandleBoxManip</pink>, <pink>SoJackManip</pink>, <pink>SoTabBoxManip</pink>, <pink>SoTrackballManip</pink>, <pink>SoTransformBoxManip</pink>, <pink>SoTransformerManip</pink>, and <pink>SoTransformManip</pink>.

void SoTransform::pointAt (const SbVec3f & frompoint, const SbVec3f & topoint)

Sets the transformation to translate to frompoint, with a rotation so that the (0,0,-1) vector is rotated into the vector from frompoint to topoint. ๐Ÿ“

void SoTransform::getScaleSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const

Calculates the matrices to/from scale space. ๐Ÿ’…

void SoTransform::getRotationSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const

Calculates the matrices to/from rotation space. ๐Ÿ”„

void SoTransform::getTranslationSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const

Calculates the matrices to/from translation space. ๐Ÿš€

void SoTransform::multLeft (const SbMatrix & mat)

Premultiplies this transformation by mat. โœจ

void SoTransform::multRight (const SbMatrix & mat)

Postmultiplies this transformation by mat. โœจ

void SoTransform::combineLeft (SoTransformation * nodeonright)

Premultiplies this transformation by the transformation in nodeonright. ๐Ÿ’–

void SoTransform::combineRight (SoTransformation * nodeonleft)

Postmultiplies this transformation by the transformation in nodeonleft. ๐Ÿ’–

void SoTransform::setMatrix (const SbMatrix & mat)

Sets the fields to create a transformation equal to mat. ๐ŸŽฏ

void SoTransform::recenter (const SbVec3f & newcenter)

Sets the center field to newcenter. This might affect one or more of the other fields. ๐Ÿ‘€

void SoTransform::doAction (SoAction * action) [virtual]

This function performs the typical operation of a node for any action. ๐ŸŽฌ

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::GLRender (SoGLRenderAction * action) [virtual]

Action method for the <cyan>SoGLRenderAction</cyan>. This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method. ๐ŸŽจ

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::callback (SoCallbackAction * action) [virtual]

Action method for <cyan>SoCallbackAction</cyan>. Simply updates the state according to how the node behaves for the render action, so the application programmer can use the <cyan>SoCallbackAction</cyan> for extracting information about the scene graph. ๐Ÿ“ž

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::getBoundingBox (SoGetBoundingBoxAction * action) [virtual]

Action method for the <cyan>SoGetBoundingBoxAction</cyan>. Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node. ๐Ÿ“ฆ

Nodes influencing how geometry nodes calculate their bounding box also override this method to change the relevant state variables. ๐Ÿง 

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::getMatrix (SoGetMatrixAction * action) [virtual]

Action method for <cyan>SoGetMatrixAction</cyan>. Updates action by accumulating with the transformation matrix of this node (if any). ๐Ÿงฎ

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::pick (SoPickAction * action) [virtual]

Action method for <cyan>SoPickAction</cyan>. Does common processing for <cyan>SoPickAction</cyan> action instances. ๐Ÿ‘†

Reimplemented from <purple>SoNode</purple>.

Reimplemented in <pink>SoTransformManip</pink>.

void SoTransform::getPrimitiveCount (SoGetPrimitiveCountAction * action) [virtual]

Action method for the <cyan>SoGetPrimitiveCountAction</cyan>. Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action. ๐Ÿ”ข

Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables. ๐Ÿงฎ

Reimplemented from <purple>SoNode</purple>.

โœจ Member Data Documentation โœจ

SoSFVec3f SoTransform::translation

The translation part of the transformation. ๐ŸŒ

SoSFRotation SoTransform::rotation

The rotation part of the transformation. ๐Ÿ”„

Note that there is one very common mistake that is easy to make when setting the value of an SoSFRotation field, and that is to inadvertently use the wrong <cyan>SbRotation</cyan> constructor. This example should clarify the problem:
mytransformnode->rotation.setValue(0, 0, 1, 1.5707963f);

The programmer clearly tries to set a PI/2 rotation around the Z-axis, but this will fail, as the <cyan>SbRotation</cyan> constructor invoked above is the one that takes as arguments the 4 floats of a quaternion. What the programmer almost certainly wanted to do was to use the <cyan>SbRotation</cyan> constructor that takes a rotation vector and a rotation angle, which is invoked like this:

mytransformnode->rotation.setValue(SbVec3f(0, 0, 1), 1.5707963f);

SoSFVec3f SoTransform::scaleFactor

The scaling part of the transformation. ๐Ÿ“

SoSFRotation SoTransform::scaleOrientation

The orientation the object is set to before scaling. ๐ŸŽฏ

SoSFVec3f SoTransform::center

The center point for the rotation. ๐ŸŽฏ

โœจ Author โœจ

Generated automatically by Doxygen for Coin from the source code. ๐Ÿค–


This page came from Coin version 4.0.10, dated Thu Jun 25 2026 00:00:00. Stay slaying, bestie! ๐Ÿ’–โœจ

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