SoIndexedTriangleFanSet Class Reference

Indexed triangle fan set shape node. More...

#include <Inventor/nodes/SoIndexedTriangleFanSet.h>

Inheritance diagram for SoIndexedTriangleFanSet:

Public Member Functions
virtual SoType	getTypeId () const
	Returns the type identifier for this specific instance.
	SoIndexedTriangleFanSet ()
	Constructs a default IndexedTriangleFanSet.
int	getNumTriangles ()
	Returns the number of triangles.
int	getNumFans ()
	Returns the number of fans (parts)
Public Member Functions inherited from SoVertexShape
SoNormalCache *	getNormalCache () const
	Returns the current normal cache, or NULL if there is none.
SoTangentCache *	getTangentCache () const
	Returns the current tangent cache, or NULL if there is none.
Public Member Functions inherited from SoShape
virtual SbBool	affectsState () const
	Overrides default method on SoNode.
ShapeType	getShapeType ()
	Gets the current shape Full Scene Antialiasing type.
Public Member Functions inherited from SoNode
virtual void	setOverride (const SbBool state)
	Turns the override flag on or off.
virtual SbBool	isOverride () const
	Returns the state of the override flag.
virtual SoNode *	copy (SbBool copyConnections=FALSE) const
	Creates and returns an exact copy of the node.
virtual void	touch ()
	Marks an instance as modified, simulating a change to it.
Public Member Functions inherited from SoFieldContainer
void	setToDefaults ()
	Sets all fields in this object to their default values.
SbBool	hasDefaultValues () const
	Returns TRUE if all of the object's fields have their default values.
SbBool	fieldsAreEqual (const SoFieldContainer *fc) const
	Returns TRUE if this object's fields are exactly equal to fc's fields.
void	copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE)
	Copies the contents of fc's fields into this object's fields.
SoNONUNICODE SbBool	set (const char *fieldDataString)
	Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.
SbBool	set (const SbString &fieldDataString)
	Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format.
void	get (SbString &fieldDataString)
	Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string.
virtual int	getFields (SoFieldList &list) const
	Appends references to all of this object's fields to resultList, and returns the number of fields appended.
virtual int	getAllFields (SoFieldList &list) const
	Returns a list of fields, including the eventIn's and eventOut's.
virtual SoField *	getField (const SbName &fieldName) const
	Returns a the field of this object whose name is fieldName.
virtual SoField *	getEventIn (const SbName &fieldName) const
	Returns a the eventIn with the given name.
virtual SoField *	getEventOut (const SbName &fieldName) const
	Returns the eventOut with the given name.
SbBool	getFieldName (const SoField *field, SbName &fieldName) const
	Returns the name of the given field in the fieldName argument.
SbBool	enableNotify (SbBool flag)
	Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE).
SbBool	isNotifyEnabled () const
	Notification is the process of telling interested objects that this object has changed.
virtual void	setUserData (void *data)
	Sets application data.
void *	getUserData (void) const
	Gets user application data.
Public Member Functions inherited from SoBase
virtual SbName	getName () const
	Returns the name of an instance.
virtual void	setName (const SbName &name)
	Sets the name of an instance.
void	setSynchronizable (const bool b)
	Sets this to be a ScaleViz synchronizable object.
bool	isSynchronizable () const
	Gets the ScaleViz synchronizable state of this object.
Public Member Functions inherited from SoRefCounter
void	ref () const
	Adds a reference to an instance.
void	unref () const
	Removes a reference from an instance.
void	unrefNoDelete () const
	unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero.
int	getRefCount () const
	Returns current reference count.
void	lock () const
	lock this instance.
void	unlock () const
	unlock this instance.
Public Member Functions inherited from SoTypedObject
SbBool	isOfType (const SoType &type) const
	Returns TRUE if this object is of the type specified in type or is derived from that type.
template<typename TypedObjectClass >
SbBool	isOfType () const
	Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class.

Static Public Member Functions
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
Static Public Member Functions inherited from SoIndexedShape
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
Static Public Member Functions inherited from SoVertexShape
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
Static Public Member Functions inherited from SoShape
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
static SbBool	isPrimitiveRestartAvailable (SoState *state=NULL)
	Returns TRUE if the primitive restart feature is available.
Static Public Member Functions inherited from SoNode
static SoType	getClassTypeId ()
	Returns the type identifier for this class.
static SoNode *	getByName (const SbName &name)
	A node's name can be set using SoBase::setName().
static int	getByName (const SbName &name, SoNodeList &list)
	A node's name can be set using SoBase::setName().
Static Public Member Functions inherited from SoFieldContainer
static SoType	getClassTypeId ()
	Returns the type of this class.
Static Public Member Functions inherited from SoBase
static SoType	getClassTypeId ()
	Returns type identifier for this class.
Static Public Member Functions inherited from SoTypedObject
static SoType	getClassTypeId ()
	Returns the type identifier for this class.

Additional Inherited Members
Public Types inherited from SoShape
enum	ShapeType {   POINTS ,   LINES ,   POLYGONS ,   TEXT }
	Basic type for antialiased rendering for this shape (Do not consider the SoDrawStyle property currently in the state). More...
Public Attributes inherited from SoIndexedShape
SoMFInt32	coordIndex
	The indices of the coordinates that the shape uses as its vertices.
SoMFInt32	materialIndex
	The indices of the materials that are used for the shape.
SoMFInt32	normalIndex
	The indices of the normals that are used for the shape.
SoMFInt32	tangentIndex
	The indices of the tangents that are used for the shape.
SoMFInt32	textureCoordIndex
	The indices of the texture coordinates that are used for the shape.
Public Attributes inherited from SoVertexShape
SoSFNode	vertexProperty
	vertex property node.
Public Attributes inherited from SoShape
SoSFBool	boundingBoxIgnoring
	Whether to ignore this node during bounding box traversal.

Detailed Description

Indexed triangle fan set shape node.

This shape node constructs triangle fans out of vertices located at the coordinates specified in the vertexProperty field (from SoVertexShape), or the current inherited coordinates. For optimal performance, the vertexProperty field is recommended.

SoIndexedTriangleFanSet uses the indices in the coordIndex field (from SoIndexedShape) to specify the vertices of the triangle fans. An index of SO_END_FAN_INDEX (-1) indicates that the current fan has ended and the next one begins.

The vertices of the faces are transformed by the current transformation matrix. The faces are drawn with the current light model and drawing style.

Treatment of the current material and normal binding is as follows: PER_PART specifies a material or normal per fan. PER_FACE binding specifies a material or normal for each triangle. PER_VERTEX specifies a material or normal for each vertex. The corresponding _INDEXED bindings are the same, but use the materialIndex or normalIndex indices (see SoIndexedShape). The default material binding is OVERALL. The default normal binding is PER_VERTEX_INDEXED

If any normals (or materials) are specified, Open Inventor assumes you provide the correct number of them, as indicated by the binding. You will see unexpected results if you specify fewer normals (or materials) than the shape requires. If no normals are specified, they will be generated automatically.

To render triangles that are not in fans, see the SoIndexedTriangleSet and SoIndexedTriangleStripSet nodes.

Limitations:

• Due to limitations of the OpenGL VBO (vertex buffer object) rendering model, it is not possible to use VBO rendering (and performance may be lower) if either the normal binding or the material binding is set to either PER_PART(_INDEXED) or PER_FACE(_INDEXED).
• For texture coordinates and normal binding, only OVERALL and PER_VERTEX_INDEXED mode are supported yet.

FILE FORMAT/DEFAULT

IndexedTriangleFanSet {

vertexProperty	NULL
coordIndex	-1
materialIndex	-1
normalIndex	-1
textureCoordIndex	-1

}

ACTION BEHAVIOR

SoGLRenderAction
Draws a fan set based on the current coordinates, normals, materials, drawing style, and so on.

SoRayPickAction
Picks on the fan set based on the current coordinates and transformation. Details about the intersection are returned in an SoFaceDetail.

SoGetBoundingBoxAction
Computes the bounding box that encloses all vertices of the fan set with the current transformation applied to them. Sets the center to the average of the coordinates of all vertices.

SoCallbackAction
If any triangle callbacks are registered with the action, they will be invoked for each successive triangle forming the fan of the set.

SEE ALSO

SoCoordinate3, SoDrawStyle, SoFaceDetail, SoFullSceneAntialiasing, SoIndexedFaceSet, SoIndexedTriangleSet, SoTriangleStripSet, SoVertexProperty

Definition at line 109 of file SoIndexedTriangleFanSet.h.

Constructor & Destructor Documentation

SoIndexedTriangleFanSet()

SoIndexedTriangleFanSet::SoIndexedTriangleFanSet

(

)

Constructs a default IndexedTriangleFanSet.

Member Function Documentation

getClassTypeId()

static SoType SoIndexedTriangleFanSet::getClassTypeId ( )

static

Returns the type identifier for this class.

getNumFans()

int SoIndexedTriangleFanSet::getNumFans

(

)

Returns the number of fans (parts)

getNumTriangles()

int SoIndexedTriangleFanSet::getNumTriangles

(

)

Returns the number of triangles.

getTypeId()

virtual SoType SoIndexedTriangleFanSet::getTypeId ( ) const

virtual

Returns the type identifier for this specific instance.

Reimplemented from SoIndexedShape.

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

• Inventor/nodes/SoIndexedTriangleFanSet.h