SoTransform(3)
๐ฆ SoTransform(3) โ the Coin manual, bestie edition ๐ฆ
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 ๐
and we're doing this in two parts, so don't wander off.
๐ NAME ๐
SoTransform โ the "all-purpose" transformation node type.
that's the actual description and honestly? accurate. she ate.
โจ SYNOPSIS โจ
#include <Inventor/nodes/SoTransform.h>
Inherits SoTransformation.
Inherited by SoTransformManip.
๐ธ Public Member Functions ๐ธ
the stuff she does herself, no middleman, no cap:
virtual SoType getTypeId (void) constSoTransform (void)void pointAt (const SbVec3f &frompoint, const SbVec3f &topoint)void getScaleSpaceMatrix (SbMatrix &mat, SbMatrix &inv) constvoid getRotationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) constvoid getTranslationSpaceMatrix (SbMatrix &mat, SbMatrix &inv) constvoid 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)
๐ Public Member Functions inherited from SoNode ๐
everything she gets handed down from SoNode, iconic behavior:
void setOverride (const SbBool state)SbBool isOverride (void) constvoid setNodeType (const NodeType type)NodeType getNodeType (void) constvirtual SoNode * copy (SbBool copyconnections=FALSE) constvirtual SbBool affectsState (void) constvirtual 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) constvirtual SoChildList * getChildren (void) constvirtual void writeInstance (SoOutput *out)virtual SoNode * addToCopyDict (void) constvirtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)virtual SoFieldContainer * copyThroughConnection (void) const
๐ง Public Member Functions inherited from SoFieldContainer ๐ง
the field-management side of the family tree:
void setToDefaults (void)SbBool hasDefaultValues (void) constSbBool fieldsAreEqual (const SoFieldContainer *container) constvoid copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)SbBool set (const char *const fielddata)void get (SbString &fielddata)virtual int getFields (SoFieldList &l) constvirtual int getAllFields (SoFieldList &l) constvirtual SoField * getField (const SbName &name) constvirtual SoField * getEventIn (const SbName &name) constvirtual SoField * getEventOut (const SbName &name) constSbBool getFieldName (const SoField *const field, SbName &name) constSbBool enableNotify (const SbBool flag)SbBool isNotifyEnabled (void) constSbBool 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) constvirtual void getFieldsMemorySize (size_t &managed, size_t &unmanaged) constvoid setUserData (void *userdata) constvoid * getUserData (void) const
๐ Public Member Functions inherited from SoBase ๐
the O.G. base class energy:
void ref (void) constvoid unref (void) constvoid unrefNoDelete (void) constint32_t getRefCount (void) constvoid touch (void)SbBool isOfType (SoType type) constโ tells youTRUEif the type of this object is either the same type astype, or inherited fromtype.virtual SbName getName (void) constvirtual 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) constSbBool 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.
๐ Static Public Member Functions inherited from SoTransformation ๐
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.
๐ฅ Static Public Member Functions inherited from SoNode ๐ฅ
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)
๐ Static Public Member Functions inherited from SoFieldContainer ๐
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 theSoTypeobject 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)
๐ซถ Static Public Member Functions inherited from SoBase ๐ซถ
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 theSoTypeobject 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)
๐ Public Attributes ๐
these are the fields you actually set, the whole reason she's famous:
SoSFVec3f translationSoSFRotation rotationSoSFVec3f scaleFactorSoSFRotation scaleOrientationSoSFVec3f center
๐ Protected Member Functions ๐
for her and her subclasses only, sorry bestie:
virtual const SoFieldData * getFieldData (void) constvirtual ~SoTransform ()
๐ Protected Member Functions inherited from SoTransformation ๐
SoTransformation (void)virtual ~SoTransformation ()
๐ธ Protected Member Functions inherited from SoNode ๐ธ
SoNode (void)virtual ~SoNode ()virtual SbBool readInstance (SoInput *in, unsigned short flags)
๐ Protected Member Functions inherited from SoFieldContainer ๐
SoFieldContainer (void)virtual ~SoFieldContainer ()
โจ Protected Member Functions inherited from SoBase โจ
SoBase (void)virtual ~SoBase ()virtual void destroy (void)SbBool hasMultipleWriteRefs (void) constSbBool writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) constvoid writeFooter (SoOutput *out) constvirtual const char * getFileFormatName (void) constvirtual SoNotRec createNotRec (void)
โญ Static Protected Member Functions โญ
static const SoFieldData ** getFieldDataPtr (void)
๐ง Static Protected Member Functions inherited from SoTransformation ๐ง
static const SoFieldData ** getFieldDataPtr (void)
๐ Static Protected Member Functions inherited from SoNode ๐
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)
๐ฆ Static Protected Member Functions inherited from SoBase ๐ฆ
static uint32_t getCurrentWriteCounter (void)static void staticDataLock (void)static void staticDataUnlock (void)
๐ Additional Inherited Members ๐
๐ Public Types inherited from SoNode ๐
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 }
๐ Protected Types inherited from SoBase ๐
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
๐ฅ Protected Attributes inherited from SoNode ๐ฅ
SbUniqueId uniqueId
๐ Protected Attributes inherited from SoFieldContainer ๐
SbBool isBuiltIn
๐ Static Protected Attributes inherited from SoNode ๐
static SbUniqueId nextUniqueId = 1static int nextActionMethodIndex = 0
โจ Detailed Description โจ
Okay so bestie, <pink>SoTransform</pink> is like the all-purpose transformation node type. ๐
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. ๐
The order of operations is: first scaling is done, then rotation, then translation. Periodt. ๐ฅ
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
}
โจ Constructor & Destructor Documentation โจ
SoTransform::SoTransform (void )
Constructor. Just a constructor, bestie. ๐
SoTransform::~SoTransform () [protected], [virtual]
Destructor. It's protected and virtual. ๐
โจ Member Function Documentation โจ
SoType SoTransform::getClassTypeId (void ) [static]
This static method returns the <cyan>SoType</cyan> object associated with objects of this class. โจ
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. ๐ฆ
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. ๐
Returns the <cyan>SoFieldData</cyan> class which holds information about fields in this node. ๐
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. ๐
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. ๐
void SoTransform::getScaleSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const
Calculates the matrices to/from scale space. ๐
void SoTransform::getRotationSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const
Calculates the matrices to/from rotation space. ๐
void SoTransform::getTranslationSpaceMatrix (SbMatrix & mat, SbMatrix & inv) const
Calculates the matrices to/from translation space. ๐
void SoTransform::multLeft (const SbMatrix & mat)
Premultiplies this transformation by mat. โจ
void SoTransform::multRight (const SbMatrix & mat)
Postmultiplies this transformation by mat. โจ
void SoTransform::combineLeft (SoTransformation * nodeonright)
Premultiplies this transformation by the transformation in nodeonright. ๐
void SoTransform::combineRight (SoTransformation * nodeonleft)
Postmultiplies this transformation by the transformation in nodeonleft. ๐
void SoTransform::setMatrix (const SbMatrix & mat)
Sets the fields to create a transformation equal to mat. ๐ฏ
void SoTransform::recenter (const SbVec3f & newcenter)
Sets the center field to newcenter. This might affect one or more of the other fields. ๐
void SoTransform::doAction (SoAction * action) [virtual]
This function performs the typical operation of a node for any action. ๐ฌ
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. ๐จ
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. ๐
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. ๐ฆ
Nodes influencing how geometry nodes calculate their bounding box also override this method to change the relevant state variables. ๐ง
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). ๐งฎ
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. ๐
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. ๐ข
Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables. ๐งฎ
Reimplemented from <purple>SoNode</purple>.
โจ Member Data Documentation โจ
SoSFVec3f SoTransform::translation
The translation part of the transformation. ๐
SoSFRotation SoTransform::rotation
The rotation part of the transformation. ๐
Note that there is one very common mistake that is easy to make when setting the value of anSoSFRotationfield, 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. ๐
SoSFRotation SoTransform::scaleOrientation
The orientation the object is set to before scaling. ๐ฏ
SoSFVec3f SoTransform::center
The center point for the rotation. ๐ฏ
โจ Author โจ
Generated automatically by Doxygen for Coin from the source code. ๐ค
This page came from Coin version 4.0.10, dated Thu Jun 25 2026 00:00:00. Stay slaying, bestie! ๐โจ
๐ฆ where this page comes from
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- fedora 43: Coin4-devel 4.0.10-1.fc43 ยท BSD-3-Clause AND GPL-3.0-or-later
- fedora 44: Coin4-devel 4.0.10-1.fc44 ยท BSD-3-Clause AND GPL-3.0-or-later
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