Coin Logo Coin3D is Free Software,
published under the BSD 3-clause license.
https://coin3d.github.io
https://www.kongsberg.com/en/kogt/
SoSurroundScale Class Reference

The SoSurroundScale class is used to automatically scale geometry to surround other geometry. More...

#include <Inventor/nodes/SoSurroundScale.h>

Inheritance diagram for SoSurroundScale:
SoTransformation SoNode SoFieldContainer SoBase

Public Member Functions

virtual SoType getTypeId (void) const
 Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting. More...
 
 SoSurroundScale (void)
 
void invalidate (void)
 
virtual void doAction (SoAction *action)
 
void setDoingTranslations (const SbBool val)
 
SbBool isDoingTranslations (void)
 
- 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 SoNodecopy (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 getPrimitiveCount (SoGetPrimitiveCountAction *action)
 
virtual void grabEventsSetup (void)
 
virtual void grabEventsCleanup (void)
 
virtual void startNotify (void)
 
virtual void notify (SoNotList *l)
 
SbUniqueId getNodeId (void) const
 
virtual SoChildListgetChildren (void) const
 
virtual void writeInstance (SoOutput *out)
 
virtual SoNodeaddToCopyDict (void) const
 
virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)
 
virtual SoFieldContainercopyThroughConnection (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 SoFieldgetField (const SbName &name) const
 
virtual SoFieldgetEventIn (const SbName &name) const
 
virtual SoFieldgetEventOut (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
 Returns TRUE if the type of this object is either of the same type or inherited from type. More...
 
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 SoAuditorListgetAuditors (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 SoTransformation
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 SoNodegetByName (const SbName &name)
 
static int getByName (const SbName &name, SoNodeList &l)
 
static void initClass (void)
 
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)
 
- 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 SoFieldContainercheckCopy (const SoFieldContainer *orig)
 
static SoFieldContainerfindCopy (const SoFieldContainer *orig, const SbBool copyconnections)
 
static void copyDone (void)
 
- Static Public Member Functions inherited from SoBase
static void initClass (void)
 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)
 This 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 SoBasegetNamedBase (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

SoSFInt32 numNodesUpToContainer
 
SoSFInt32 numNodesUpToReset
 

Protected Member Functions

virtual const SoFieldDatagetFieldData (void) const
 
virtual ~SoSurroundScale ()
 
virtual void callback (SoCallbackAction *action)
 
virtual void GLRender (SoGLRenderAction *action)
 
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
 
virtual void getMatrix (SoGetMatrixAction *action)
 
virtual void pick (SoPickAction *action)
 
void updateMySurroundParams (SoAction *action, const SbMatrix &inv)
 
void setIgnoreInBbox (const SbBool val)
 
SbBool isIgnoreInBbox (void)
 
- Protected Member Functions inherited from SoTransformation
 SoTransformation (void)
 
virtual ~SoTransformation ()
 
- 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
 
virtual SoNotRec createNotRec (void)
 

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)
 
- Static Protected Member Functions inherited from SoTransformation
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)
 

Protected Attributes

SbVec3f cachedScale
 
SbVec3f cachedInvScale
 
SbVec3f cachedTranslation
 
SbBool cacheOK
 
SbBool doTranslations
 
- Protected Attributes inherited from SoNode
SbUniqueId uniqueId
 
- Protected Attributes inherited from SoFieldContainer
SbBool isBuiltIn
 

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, COIN_4_0 = 0x20000
}
 
- Protected Types inherited from SoBase
enum  BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
 
- Static Protected Attributes inherited from SoNode
static SbUniqueId nextUniqueId = 1
 
static int nextActionMethodIndex = 0
 

Detailed Description

The SoSurroundScale class is used to automatically scale geometry to surround other geometry.

This node calculates a transformation (a translation and a scale) which will, when the node is traversed, be appended to the current model matrix, making a default cube placed directly to the right of this node in the graph surround geometry to the right of the container branch this node is on. The container is specified by the field SoSurroundScale::numNodesUpToContainer.

When calculating the bounding box to be surrounded, the bounding box action will be applied to the container node, and the bounding box calculations will be reset after traversing the node specified by the field SoSurroundScale::numNodesUpToReset.

A way of thinking of the container node is that there exists a path from the root-node to the SoSurroundScale node. This path has a number of nodes in it. numNodesUpToContainer is the number of nodes in the path from the SoSurroundScale node towards the root node. When having counted numNodesUpToContainer from the SoSurroundScale node, you will have reached the container node. The container node is the seed-node that the bounding box is calculated from. All nodes lower than the seed-node will be a part of the bounding box unless they are closer to the SoSurroundScale node than numNodesUpToReset.

To make sure the node(s) that are to be scaled by the SoSurroundScale node aren't a part of the bounding box, the numNodesUpToReset is used. It is also the number of nodes up from the SoSurroundScale node towards the root node. The meaning of numNodesUpToReset is that nodes that are closer to the SoSurroundNode than the node at position numNodesUpToReset are not to be used for bounding box calculations.

Here's a complete, standalone example which sets up an SoTrackballDragger (connected to a cube), and uses an SoSurroundScale node to make it auto-scale to the size of the high cube and translates it an offset to one side of the cube:

#include <Inventor/Qt/SoQt.h>
#include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
#include <Inventor/draggers/SoTrackballDragger.h>
#include <Inventor/nodes/SoAntiSquish.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoCube.h>
#include <Inventor/nodes/SoSurroundScale.h>
#include <Inventor/nodes/SoRotation.h>
#include <Inventor/nodes/SoTranslation.h>
int
main(int argc, char **argv)
{
QWidget * window = SoQt::init(argv[0]);
if (window == NULL) exit(1);
SoSeparator * root = new SoSeparator;
root->ref();
SoSeparator * surroundsep = new SoSeparator;
root->addChild(surroundsep);
SoTranslation * translation = new SoTranslation;
translation->translation = SbVec3f(12, 0, 0);
surroundsep->addChild(translation);
surroundsep->addChild(ss);
SoAntiSquish * antisquish = new SoAntiSquish;
antisquish->sizing = SoAntiSquish::BIGGEST_DIMENSION;
surroundsep->addChild(antisquish);
surroundsep->addChild(dragger);
SoRotation * rotation = new SoRotation;
rotation->rotation.connectFrom(& dragger->rotation);
root->addChild(rotation);
SoCube * cube = new SoCube;
cube->height = 10.0f;
root->addChild(cube);
SoQtExaminerViewer * viewer = new SoQtExaminerViewer(window);
viewer->setSceneGraph(root);
viewer->setViewing(FALSE);
viewer->setDecoration(FALSE);
viewer->show();
SoQt::show(window);
SoQt::mainLoop();
delete viewer;
root->unref();
return 0;
}

It might be easier to see how the SoSurroundScale node works in the above example by looking at the actual scene graph:

#Inventor V2.1 ascii
Separator {
Separator {
Translation {
translation 12 0 0
}
SurroundScale {
}
AntiSquish {
sizing BIGGEST_DIMENSION
}
DEF mydragger TrackballDragger {
}
}
Rotation {
rotation 0 0 1 0 =
USE mydragger . rotation
}
Cube {
height 10
}
}

This node is internally used by manipulators to make it possible for them to scale their dragger's geometry to match the scene graph geometry it is modifying, as is demonstrated above (but outside of the context of a manipulator).

It is also generally useful for application programmers who want any particular piece of geometry surround other geometry of unknown or changing extent.

SoSurroundScale nodes in the scene graph are often paired up with SoAntiSquish nodes to get uniform scaling along all three principal axes, as has also been done in the above example.

FILE FORMAT/DEFAULTS:

See also
SoAntiSquish

Constructor & Destructor Documentation

◆ SoSurroundScale()

SoSurroundScale::SoSurroundScale ( void  )

Constructor.

◆ ~SoSurroundScale()

SoSurroundScale::~SoSurroundScale ( )
protectedvirtual

Destructor.

Member Function Documentation

◆ getTypeId()

SoType SoSurroundScale::getTypeId ( void  ) const
virtual

Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime 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 predefined 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 top level superclasses for the various class groups.

Reimplemented from SoTransformation.

◆ getFieldData()

const SoFieldData * SoSurroundScale::getFieldData ( void  ) const
protectedvirtual

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoTransformation.

◆ invalidate()

void SoSurroundScale::invalidate ( void  )

Invalidates the cached transformation, forcing a recalculation to be done the next time this node is traversed.

◆ doAction()

void SoSurroundScale::doAction ( SoAction action)
virtual

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

Reimplemented from SoNode.

◆ setDoingTranslations()

void SoSurroundScale::setDoingTranslations ( const SbBool  val)

Sets whether the translation part of the transformation should be ignored or not. Default behavior is to translate.

◆ isDoingTranslations()

SbBool SoSurroundScale::isDoingTranslations ( void  )

Returns whether the translation part of the transformation should be ignored or not.

See also
setDoingTranslations()

◆ callback()

void SoSurroundScale::callback ( SoCallbackAction action)
protectedvirtual

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoNode.

◆ GLRender()

void SoSurroundScale::GLRender ( SoGLRenderAction action)
protectedvirtual

Action method for the SoGLRenderAction.

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.

Reimplemented from SoNode.

◆ getBoundingBox()

void SoSurroundScale::getBoundingBox ( SoGetBoundingBoxAction action)
protectedvirtual

Action method for the SoGetBoundingBoxAction.

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.

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

Reimplemented from SoNode.

◆ getMatrix()

void SoSurroundScale::getMatrix ( SoGetMatrixAction action)
protectedvirtual

Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoNode.

◆ pick()

void SoSurroundScale::pick ( SoPickAction action)
protectedvirtual

Action method for SoPickAction.

Does common processing for SoPickAction action instances.

Reimplemented from SoNode.

◆ updateMySurroundParams()

void SoSurroundScale::updateMySurroundParams ( SoAction action,
const SbMatrix inv 
)
protected

Calculates the translation and scale needed to make a default cube surround geometry to the right of the branch this node is on.

◆ setIgnoreInBbox()

void SoSurroundScale::setIgnoreInBbox ( const SbBool  val)
protected

Sets whether bounding box calculations in SoGetBoundingBoxAction should be affected by this node.

Default is to ignore our bounding box calculations.

◆ isIgnoreInBbox()

SbBool SoSurroundScale::isIgnoreInBbox ( void  )
protected

Returns the value of the flag that decides whether bounding box calculations in SoGetBoundingBoxAction should be affected by this node.

See also
setIgnoreInBbox()

Member Data Documentation

◆ numNodesUpToContainer

SoSFInt32 SoSurroundScale::numNodesUpToContainer

Number of nodes in the path counting from this and "upwards" to the container node.

◆ numNodesUpToReset

SoSFInt32 SoSurroundScale::numNodesUpToReset

Number of nodes in the path counting from this and "upwards" to the node where we will reset the bounding box value.

◆ cachedScale

SoSurroundScale::cachedScale
protected

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

◆ cachedInvScale

SoSurroundScale::cachedInvScale
protected

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

◆ cachedTranslation

SoSurroundScale::cachedTranslation
protected

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

◆ cacheOK

SoSurroundScale::cacheOK
protected

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

◆ doTranslations

SoSurroundScale::doTranslations
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: