Polygonal face shape node. More...

#include <Inventor/nodes/SoFaceSet.h>

Inheritance diagram for SoFaceSet:

Public Types
enum	Binding { OVERALL, PER_FACE, PER_VERTEX }
	This enum is used to indicate the current material or normal binding. More...
typedef void(SoFaceSet::*	PMFS )(SoGLRenderAction *)
	Typedef of pointer to method on FaceSet; This will be used to simplify declaration and initialization.
Public Member Functions
	SoFaceSet ()
	Creates a face set node with default settings.
virtual void	GLRender (SoGLRenderAction *action)
	Implement actions.
virtual SbBool	generateDefaultNormals (SoState state, SoNormalBundle nb)
	Generates default normals using the given normal bundle.
Static Public Member Functions
static void	initClass ()
	Initializes base node class.
Public Attributes
Fields
SoMFInt32	numVertices
	Number of vertices per face.
SoSFBool	sendAdjacency
	flag that defines if the GL_TRIANGLES_ADJACENCY draw mode is used (MeVis Only) (this only applies to triangles, not to quads and other faces)
Protected Member Functions
virtual void	generatePrimitives (SoAction *action)
	Generates triangles representing faces.
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
	Computes bounding box of face set.
virtual SoDetail *	createTriangleDetail (SoRayPickAction action, const SoPrimitiveVertex v1, const SoPrimitiveVertex v2, const SoPrimitiveVertex v3, SoPickedPoint *pp)
	Overrides standard method to create an SoFaceDetail instance.
	~SoFaceSet ()

Detailed 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.

File Format/Default

FaceSet {
  startIndex 0
  numVertices -1
}

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.

See Also

: SoCoordinate3, SoDrawStyle, SoIndexedFaceSet, SoFaceDetail, SoVertexProperty

Definition at line 149 of file SoFaceSet.h.

Member Typedef Documentation

typedef void(SoFaceSet::* SoFaceSet::PMFS)(SoGLRenderAction *)

Definition at line 180 of file SoFaceSet.h.

Member Enumeration Documentation

enum SoFaceSet::Binding

Enumerator:

OVERALL
PER_FACE
PER_VERTEX

Definition at line 186 of file SoFaceSet.h.

Constructor & Destructor Documentation

SoFaceSet::SoFaceSet ( )

SoFaceSet::~SoFaceSet ( ) [protected]

Member Function Documentation

virtual void SoFaceSet::computeBBox	(	SoAction *	action,
		SbBox3f &	box,
		SbVec3f &	center
	)		`[protected, virtual]`

Implements SoShape.

virtual SoDetail* SoFaceSet::createTriangleDetail	(	SoRayPickAction *	action,
		const SoPrimitiveVertex *	v1,
		const SoPrimitiveVertex *	v2,
		const SoPrimitiveVertex *	v3,
		SoPickedPoint *	pp
	)		`[protected, virtual]`

Reimplemented from SoShape.

virtual SbBool SoFaceSet::generateDefaultNormals	(	SoState *	state,
		SoNormalBundle *	nb
	)		`[virtual]`

Returns TRUE.

Reimplemented from SoVertexShape.

virtual void SoFaceSet::generatePrimitives ( SoAction * action ) [protected, virtual]

Implements SoShape.

virtual void SoFaceSet::GLRender ( SoGLRenderAction * action ) [virtual]

Reimplemented from SoShape.

static void SoFaceSet::initClass ( ) [static]

Reimplemented from SoNonIndexedShape.

Member Data Documentation

SoMFInt32 SoFaceSet::numVertices

Definition at line 158 of file SoFaceSet.h.

SoSFBool SoFaceSet::sendAdjacency

Definition at line 162 of file SoFaceSet.h.

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

MeVis/ThirdParty/Sources/Inventor/inventor/lib/database/include/Inventor/nodes/SoFaceSet.h

Public Types

Public Member Functions

Static Public Member Functions