SoIndexedFaceSet(3IV)

NAME
SoIndexedFaceSet — indexed polygonal face shape node

INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoShape > SoVertexShape > SoIndexedShape > SoIndexedFaceSet

SYNOPSIS
#include <Inventor/nodes/SoIndexedFaceSet.h>

Fields from class SoIndexedShape:

SoMFInt32
coordIndex
SoMFInt32
materialIndex
SoMFInt32
normalIndex
SoMFInt32
textureCoordIndex

Fields from class SoVertexShape:

SoSFNode
vertexProperty

Methods from class SoIndexedFaceSet:

SoIndexedFaceSet()
static SoType
getClassTypeId()

Methods from class SoNode:

void
setOverride(SbBool state)
SbBool
isOverride() const
SoNode *
copy(SbBool copyConnections = FALSE) const
virtual SbBool
affectsState() const
static SoNode *
getByName(const SbName &name)
static int
getByName(const SbName &name, SoNodeList &list)

Methods from class SoFieldContainer:

void
setToDefaults()
SbBool
hasDefaultValues() const
SbBool
fieldsAreEqual(const SoFieldContainer *fc) const
void
copyFieldValues(const SoFieldContainer *fc, SbBool copyConnections = FALSE)
SbBool
set(const char *fieldDataString)
void
get(SbString &fieldDataString)
virtual int
getFields(SoFieldList &resultList) const
virtual SoField *
getField(const SbName &fieldName) const
SbBool
getFieldName(const SoField *field, SbName &fieldName) const
SbBool
isNotifyEnabled() const
SbBool
enableNotify(SbBool flag)

Methods from class SoBase:

void
ref()
void
unref() const
void
unrefNoDelete() const
void
touch()
virtual SoType
getTypeId() const
SbBool
isOfType(SoType type) const
virtual void
setName(const SbName &name)
virtual SbName
getName() const

DESCRIPTION
This node represents a 3D shape formed by constructing faces (polygons) from vertices located at the coordinates specified in the vertexProperty field (from SoVertexShape), or the current inherited state. For optimal performance, the vertexProperty field is recommended.

SoIndexedFaceSet uses the indices in the coordIndex field (from SoIndexedShape) to specify the polygonal faces. An index of SO_END_FACE_INDEX (-1) indicates that the current face has ended and the next one begins. For improved performance, arrange all the faces with only 3 vertices at beginning of the list, then all faces with 4 vertices, and finally all other faces.

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: The PER_PART and PER_FACE bindings specify a material or normal for each face. 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, 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.

Textures are applied as described for the SoIndexedShape class.

METHODS

SoIndexedFaceSet()
Creates an indexed face set node with default settings.

static SoType
getClassTypeId()
Returns type identifier for this class.

ACTION BEHAVIOR
SoGLRenderAction
Draws faces based on the current coordinates, normals, materials, drawing style, and so on.

SoRayPickAction
Picks faces 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 face 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 generated from each face in the set.

FILE FORMAT/DEFAULTS
IndexedFaceSet {
vertexProperty	NULL
coordIndex	0
materialIndex	-1
normalIndex	-1
textureCoordIndex	-1
}

SEE ALSO
SoCoordinate3, SoDrawStyle, SoFaceDetail, SoFaceSet, SoVertexProperty