NAME¶

SoFaceSet — polygonal face shape node

INHERITS FROM¶

SoBase > SoFieldContainer > SoNode > SoShape > SoVertexShape > SoNonIndexedShape > SoFaceSet

SYNOPSIS¶

#include <Inventor/nodes/SoFaceSet.h>

Fields from class SoFaceSet:

SoMFInt32 numVertices

Fields from class SoNonIndexedShape:

SoSFInt32 startIndex

Fields from class SoVertexShape:

SoSFNode vertexProperty

Methods from class SoFaceSet:

SoFaceSet()

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.

SoFaceSet uses the coordinates in order, starting with the first one. Each face has a number of vertices specified by a value in the numVertices field. For example, an SoFaceSet with numVertices of [3,4,4] would use coordinates 1, 2, and 3 for the first face, coordinates 4, 5, 6, and 7 for the second face, and coordinates 8, 9, 10, and 11 for the third. 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 number of values in the numVertices field indicates the number of faces in the set.

The coordinates of the face set are transformed by the current cumulative transformation. 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. The _INDEXED bindings are equivalent to their non-indexed counterparts. The default material binding is OVERALL. The default normal binding is PER_VERTEX.

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.

FIELDS¶

SoMFInt32 numVertices

Number of vertices per face.

METHODS¶

SoFaceSet()

Creates a 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¶

FaceSet {


vertexProperty	NULL
startIndex	0
numVertices	-1


}

SEE ALSO¶

SoCoordinate3, SoDrawStyle, SoIndexedFaceSet, SoFaceDetail, SoVertexProperty