SoVertexShape(3IV)

NAME
SoVertexShape — abstract base class for all vertex-based shape nodes

INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoShape > SoVertexShape

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

Fields from class SoVertexShape:

SoSFNode
vertexProperty

Methods from class SoVertexShape:

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 is the abstract base class for all vertex-based shape (geometry) nodes. It is used as a repository for convenience functions for subclasses and to provide a type identifier to make it easy to determine whether a shape is vertex-based. It contains one public field, the SoVertexProperty field.

All subclasses of this node draw objects constructed from vertices. If the vertexProperty field is non-null and there are coordinates in the associated vertex property node, then those coordinates are used. Otherwise the objects are drawn using the current coordinates in the state. The coordinates of the shape are transformed by the current transformation matrix and are drawn with the current light model and drawing style.

Subclasses that construct polygons from vertices may not render or pick correctly if any of their polygons are self-intersecting or non-planar.

All vertex shape subclasses use the bounding box of the shape to determine default texture coordinates. The longest dimension of the bounding box defines the S coordinates, and the next longest defines the T coordinates. The value of the S coordinate ranges from 0 to 1, from one end of the bounding box to the other. The T coordinate ranges between 0 and the ratio of the second greatest dimension of the bounding box to the greatest dimension.

When a vertex-based shape is picked with an SoRayPickAction, a detail is always returned. If the shape is composed of faces (such as SoFaceSet or SoTriangleStripSet), an SoFaceDetail is returned. If the shape is composed of line segments (such as SoLineSet), an SoLineDetail is returned. If the shape is composed of points (such as SoPointSet), an SoPointDetail is returned. Note that the type of detail returned is not affected by the current drawing style.

Similarly, each class of vertex-based shape invokes appropriate callbacks if those callbacks are registered with the SoCallbackAction. Shapes made of faces invoke triangle callbacks for each generated triangle. (Faces may be triangulated to create these triangles.) Shapes made of line segments invoke line segment callbacks for each segment, and shapes made of points invoke point callbacks.

The subclass SoIndexedShape is a base class for vertex-based shapes that index into the current set of coordinates. The subclass SoNonIndexedShape is a base class for vertex-based shapes that use the current coordinates in order.

FIELDS
SoSFNode
vertexProperty
vertex property node.

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

FILE FORMAT/DEFAULTS
This is an abstract class. See the reference page of a derived class for the format and default values.

SEE ALSO
SoIndexedShape, SoNonIndexedShape, SoVertexProperty