SoTriangleStripSet(3IV)

NAME
SoTriangleStripSet — triangle strip set shape node

INHERITS FROM
SoBase > SoFieldContainer > SoNode > SoShape > SoVertexShape > SoNonIndexedShape > SoTriangleStripSet

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

Fields from class SoTriangleStripSet:

SoMFInt32
numVertices

Fields from class SoNonIndexedShape:

SoSFInt32
startIndex

Fields from class SoVertexShape:

SoSFNode
vertexProperty

Methods from class SoTriangleStripSet:

SoTriangleStripSet()
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 shape node constructs triangle strips out of vertices. The vertices may be specified in the vertexProperty field (from SoVertexShape), or by the current inherited coordinates. For optimal performance, the vertexProperty field is recommended.

SoTriangleStripSet is one of the fastest ways of drawing polygonal objects in Inventor. It uses the current coordinates, in order, starting with the first one. The values in the numVertices field indicate the number of vertices to use for each triangle strip in the set. The number of values in this field determines the number of strips.

For example, if numVertices has the values [3,5], coordinates 1, 2, and 3 would be used for the first triangle strip and coordinates 4, 5, 6, 7, and 8 would be used for the second strip. This would result in 1 triangle in the first strip and 3 in the second.

The coordinates of the strips are transformed by the current cumulative transformation. The strips are drawn with the current light model and drawing style.

Treatment of the current material and normal binding is as follows: The PER_PART binding specifies a material or normal for each strip of the set. The PER_FACE binding specifies a material or normal for each triangle. The _INDEXED bindings are equivalent to their non-indexed counterparts. The default normal binding is PER_VERTEX. The default material binding is OVERALL.

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 in each triangle strip. The number of strips is equal to the number of values in this field.

METHODS

SoTriangleStripSet()
Creates a triangle strip set node with default settings.

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

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

SoRayPickAction
Picks on the strip 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 strip 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 strips of the set.

FILE FORMAT/DEFAULTS
TriangleStripSet {
vertexProperty	NULL
startIndex	0
numVertices	-1
}

SEE ALSO
SoCoordinate3, SoDrawStyle, SoFaceDetail, SoFaceSet, SoIndexedTriangleStripSet, SoQuadMesh, SoVertexProperty