SoVRMLIndexedFaceSet Class Reference

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SoVRMLIndexedFaceSet Class Reference
VRML97 Classes

The SoVRMLIndexedFaceSet class is used for representing a generic 3D shape.The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium: More...

`#include <Inventor/VRMLnodes/SoVRMLIndexedFaceSet.h>`

Inheritance diagram for SoVRMLIndexedFaceSet:

## Public Member Functions
virtual SoType | getTypeId (void) const
| SoVRMLIndexedFaceSet (void)
virtual void | GLRender (SoGLRenderAction *action)
virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual SbBool | generateDefaultNormals (SoState *s, SoNormalBundle *nb)
virtual SbBool | generateDefaultNormals (SoState *state, SoNormalCache *nc)
Public Member Functions inherited from SoVRMLVertexShape
virtual void | doAction (SoAction *action)
virtual void | getBoundingBox (SoGetBoundingBoxAction *action)
virtual void | callback (SoCallbackAction *action)
virtual void | pick (SoPickAction *action)
Public Member Functions inherited from SoVRMLGeometry
virtual void | search (SoSearchAction *action)
virtual void | copyContents (const SoFieldContainer *from, SbBool copyConn)
Public Member Functions inherited from SoShape
virtual SbBool | affectsState (void) const
virtual void | rayPick (SoRayPickAction *action)
const SoBoundingBoxCache * | getBoundingBoxCache (void) const
Public Member Functions inherited from SoNode
void | setOverride (const SbBool state)
SbBool | isOverride (void) const
void | setNodeType (const NodeType type)
NodeType | getNodeType (void) const
virtual SoNode * | copy (SbBool copyconnections=FALSE) const
virtual void | GLRenderBelowPath (SoGLRenderAction *action)
virtual void | GLRenderInPath (SoGLRenderAction *action)
virtual void | GLRenderOffPath (SoGLRenderAction *action)
virtual void | getMatrix (SoGetMatrixAction *action)
virtual void | handleEvent (SoHandleEventAction *action)
virtual void | write (SoWriteAction *action)
virtual void | audioRender (SoAudioRenderAction *action)
virtual void | grabEventsSetup (void)
virtual void | grabEventsCleanup (void)
virtual void | startNotify (void)
uint32_t | getNodeId (void) const
virtual void | writeInstance (SoOutput *out)
virtual SoNode * | addToCopyDict (void) const
virtual SoFieldContainer * | copyThroughConnection (void) const
Public Member Functions inherited from SoFieldContainer
void | setToDefaults (void)
SbBool | hasDefaultValues (void) const
SbBool | fieldsAreEqual (const SoFieldContainer *container) const
void | copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)
SbBool | set (const char *const fielddata)
void | get (SbString &fielddata)
virtual int | getFields (SoFieldList &l) const
virtual int | getAllFields (SoFieldList &l) const
virtual SoField * | getField (const SbName &name) const
virtual SoField * | getEventIn (const SbName &name) const
virtual SoField * | getEventOut (const SbName &name) const
SbBool | getFieldName (const SoField *const field, SbName &name) const
SbBool | enableNotify (const SbBool flag)
SbBool | isNotifyEnabled (void) const
SbBool | set (const char *fielddata, SoInput *input)
void | get (SbString &fielddata, SoOutput *out)
virtual SbBool | validateNewFieldValue (SoField *field, void *newval)
virtual void | addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)
SbBool | getIsBuiltIn (void) const
virtual void | getFieldsMemorySize (size_t &managed, size_t &unmanaged) const
void | setUserData (void *userdata) const
void * | getUserData (void) const
Public Member Functions inherited from SoBase
void | ref (void) const
void | unref (void) const
void | unrefNoDelete (void) const
int32_t | getRefCount (void) const
void | touch (void)
SbBool | isOfType (SoType type) const
virtual SbName | getName (void) const
virtual void | setName (const SbName &newname)
void | addAuditor (void *const auditor, const SoNotRec::Type type)
void | removeAuditor (void *const auditor, const SoNotRec::Type type)
const SoAuditorList & | getAuditors (void) const
SbBool | shouldWrite (void)
void | assertAlive (void) const

## Static Public Member Functions
static SoType | getClassTypeId (void)
static void | initClass (void)
Static Public Member Functions inherited from SoVRMLIndexedShape
static SoType | getClassTypeId (void)
static void | initClass (void)
Static Public Member Functions inherited from SoVRMLVertexShape
static SoType | getClassTypeId (void)
static void | initClass (void)
Static Public Member Functions inherited from SoVRMLGeometry
static SoType | getClassTypeId (void)
static void | initClass (void)
Static Public Member Functions inherited from SoShape
static SoType | getClassTypeId (void)
static void | initClass (void)
static void | getScreenSize (SoState *const state, const SbBox3f &boundingbox, SbVec2s &rectsize)
static float | getDecimatedComplexity (SoState *state, float complexity)
Static Public Member Functions inherited from SoNode
static uint32_t | getCompatibilityTypes (const SoType &nodetype)
static SoType | getClassTypeId (void)
static SoNode * | getByName (const SbName &name)
static int | getByName (const SbName &name, SoNodeList &l)
static void | initClass (void)
static void | initClasses (void)
static uint32_t | getNextNodeId (void)
static int | getActionMethodIndex (const SoType type)
static void | getBoundingBoxS (SoAction *action, SoNode *node)
static void | GLRenderS (SoAction *action, SoNode *node)
static void | callbackS (SoAction *action, SoNode *node)
static void | getMatrixS (SoAction *action, SoNode *node)
static void | handleEventS (SoAction *action, SoNode *node)
static void | pickS (SoAction *action, SoNode *node)
static void | rayPickS (SoAction *action, SoNode *node)
static void | searchS (SoAction *action, SoNode *node)
static void | writeS (SoAction *action, SoNode *node)
static void | audioRenderS (SoAction *action, SoNode *node)
static void | getPrimitiveCountS (SoAction *action, SoNode *node)
Static Public Member Functions inherited from SoFieldContainer
static void | initClass (void)
static SoType | getClassTypeId (void)
static void | cleanupClass (void)
static void | initCopyDict (void)
static void | addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy)
static SoFieldContainer * | checkCopy (const SoFieldContainer *orig)
static SoFieldContainer * | findCopy (const SoFieldContainer *orig, const SbBool copyconnections)
static void | copyDone (void)
Static Public Member Functions inherited from SoBase
static void | initClass (void)
static SoType | getClassTypeId (void)
static void | addName (SoBase *const base, const char *const name)
static void | removeName (SoBase *const base, const char *const name)
static void | incrementCurrentWriteCounter (void)
static void | decrementCurrentWriteCounter (void)
static SoBase * | getNamedBase (const SbName &name, SoType type)
static int | getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)
static SbBool | read (SoInput *input, SoBase *&base, SoType expectedtype)
static void | setInstancePrefix (const SbString &c)
static void | setTraceRefs (SbBool trace)
static SbBool | getTraceRefs (void)
static SbBool | connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
static SbBool | readRoute (SoInput *input)

## Public Attributes
SoSFBool | ccw
SoSFBool | solid
SoSFBool | convex
SoSFFloat | creaseAngle
Public Attributes inherited from SoVRMLIndexedShape
SoMFInt32 | coordIndex
SoMFInt32 | colorIndex
SoMFInt32 | normalIndex
SoMFInt32 | texCoordIndex
Public Attributes inherited from SoVRMLVertexShape
SoSFNode | coord
SoSFNode | texCoord
SoSFNode | normal
SoSFNode | color
SoSFBool | colorPerVertex
SoSFBool | normalPerVertex

## Protected Member Functions
virtual const SoFieldData * | getFieldData (void) const
virtual | ~SoVRMLIndexedFaceSet ()
virtual void | generatePrimitives (SoAction *action)
Protected Member Functions inherited from SoVRMLIndexedShape
| SoVRMLIndexedShape (void)
virtual | ~SoVRMLIndexedShape ()
virtual void | computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
SbBool | getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const int32_t *&cindices, const int32_t *&nindices, const int32_t *&tindices, const int32_t *&mindices, int &numcindices, const SbBool neednormals, SbBool &normalcacheused)
Protected Member Functions inherited from SoVRMLVertexShape
| SoVRMLVertexShape (void)
virtual | ~SoVRMLVertexShape ()
virtual SbBool | shouldGLRender (SoGLRenderAction *action)
void | setNormalCache (SoState *s, int numNormals, SbVec3f *normals)
SoNormalCache * | getNormalCache (void) const
SoNormalCache * | generateAndReadLockNormalCache (SoState *const state)
void | getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const SbBool neednormals)
void | readLockNormalCache (void)
void | readUnlockNormalCache (void)
Protected Member Functions inherited from SoVRMLGeometry
| SoVRMLGeometry (void)
virtual | ~SoVRMLGeometry ()
void | setupShapeHints (SoState *state, const SbBool ccw, const SbBool solid)
virtual SoChildList * | getChildren (void) const
Protected Member Functions inherited from SoShape
| SoShape (void)
virtual | ~SoShape ()
float | getComplexityValue (SoAction *action)
void | beginSolidShape (SoGLRenderAction *action)
void | endSolidShape (SoGLRenderAction *action)
void | GLRenderBoundingBox (SoGLRenderAction *action)
SbBool | shouldPrimitiveCount (SoGetPrimitiveCountAction *action)
SbBool | shouldRayPick (SoRayPickAction *const action)
void | computeObjectSpaceRay (SoRayPickAction *const action)
void | computeObjectSpaceRay (SoRayPickAction *const action, const SbMatrix &matrix)
virtual SoDetail * | createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp)
virtual SoDetail * | createLineSegmentDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp)
virtual SoDetail * | createPointDetail (SoRayPickAction *action, const SoPrimitiveVertex *v, SoPickedPoint *pp)
void | invokeTriangleCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2, const SoPrimitiveVertex *const v3)
void | invokeLineSegmentCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2)
void | invokePointCallbacks (SoAction *const action, const SoPrimitiveVertex *const v)
void | beginShape (SoAction *const action, const TriangleShape shapetype, SoDetail *const detail=NULL)
void | shapeVertex (const SoPrimitiveVertex *const v)
void | endShape (void)
void | generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoTextureCoordinateElement *const tce, const float s, const float t, const SbVec3f &normal)
void | generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoTextureCoordinateElement *const tce, const float s, const float t, const float r, const SbVec3f &normal)
SbBool | startVertexArray (SoGLRenderAction *action, const SoCoordinateElement *coords, const SbVec3f *pervertexnormals, const SbBool texpervertex, const SbBool colorpervertex)
void | finishVertexArray (SoGLRenderAction *action, const SbBool vbo, const SbBool normpervertex, const SbBool texpervertex, const SbBool colorpervertex)
Protected Member Functions inherited from SoNode
| SoNode (void)
virtual | ~SoNode ()
virtual SbBool | readInstance (SoInput *in, unsigned short flags)
Protected Member Functions inherited from SoFieldContainer
| SoFieldContainer (void)
virtual | ~SoFieldContainer ()
Protected Member Functions inherited from SoBase
| SoBase (void)
virtual | ~SoBase ()
virtual void | destroy (void)
SbBool | hasMultipleWriteRefs (void) const
SbBool | writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
void | writeFooter (SoOutput *out) const
virtual const char * | getFileFormatName (void) const

## Static Protected Member Functions
static const SoFieldData ** | getFieldDataPtr (void)
Static Protected Member Functions inherited from SoVRMLIndexedShape
static const SoFieldData ** | getFieldDataPtr (void)
Static Protected Member Functions inherited from SoVRMLVertexShape
static const SoFieldData ** | getFieldDataPtr (void)
Static Protected Member Functions inherited from SoVRMLGeometry
static const SoFieldData ** | getFieldDataPtr (void)
Static Protected Member Functions inherited from SoShape
static const SoFieldData ** | getFieldDataPtr (void)
Static Protected Member Functions inherited from SoNode
static const SoFieldData ** | getFieldDataPtr (void)
static void | setNextActionMethodIndex (int index)
static int | getNextActionMethodIndex (void)
static void | incNextActionMethodIndex (void)
static void | setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)
Static Protected Member Functions inherited from SoBase
static uint32_t | getCurrentWriteCounter (void)
static void | staticDataLock (void)
static void | staticDataUnlock (void)

## Additional Inherited Members
Public Types inherited from SoVRMLVertexShape
enum | Binding { OVERALL = SoMaterialBindingElement::OVERALL, PER_PART = SoMaterialBindingElement::PER_PART, PER_PART_INDEXED = SoMaterialBindingElement::PER_PART_INDEXED, PER_FACE = SoMaterialBindingElement::PER_FACE, PER_FACE_INDEXED = SoMaterialBindingElement::PER_FACE_INDEXED, PER_VERTEX = SoMaterialBindingElement::PER_VERTEX, PER_VERTEX_INDEXED = SoMaterialBindingElement::PER_VERTEX_INDEXED }
Public Types inherited from SoShape
enum | TriangleShape { TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON, QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP }
Public Types inherited from SoNode
enum | NodeType { INVENTOR = 0x0000, VRML1 = 0x0001, VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 = 0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020, INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 = 0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3 = 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000, COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 = 0x10000 }
Protected Types inherited from SoBase
enum | BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
Protected Attributes inherited from SoNode
uint32_t | uniqueId
Protected Attributes inherited from SoFieldContainer
SbBool | isBuiltIn
Static Protected Attributes inherited from SoNode
static uint32_t | nextUniqueId = 1
static int | nextActionMethodIndex = 0

## Detailed Description

The SoVRMLIndexedFaceSet class is used for representing a generic 3D shape.

The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium:

    IndexedFaceSet {
      eventIn       MFInt32 set_colorIndex
      eventIn       MFInt32 set_coordIndex
      eventIn       MFInt32 set_normalIndex
      eventIn       MFInt32 set_texCoordIndex
      exposedField  SFNode  color             NULL
      exposedField  SFNode  coord             NULL
      exposedField  SFNode  normal            NULL
      exposedField  SFNode  texCoord          NULL
      field         SFBool  ccw               TRUE
      field         MFInt32 colorIndex        []        # [-1,)
      field         SFBool  colorPerVertex    TRUE
      field         SFBool  convex            TRUE
      field         MFInt32 coordIndex        []        # [-1,)
      field         SFFloat creaseAngle       0         # [0,)
      field         MFInt32 normalIndex       []        # [-1,)
      field         SFBool  normalPerVertex   TRUE
      field         SFBool  solid             TRUE
      field         MFInt32 texCoordIndex     []        # [-1,)
    }

The IndexedFaceSet node represents a 3D shape formed by constructing faces (polygons) from vertices listed in the coord field. The coord field contains a Coordinate node that defines the 3D vertices referenced by the coordIndex field. IndexedFaceSet uses the indices in its coordIndex field to specify the polygonal faces by indexing into the coordinates in the Coordinate node. An index of "-1" indicates that the current face has ended and the next one begins. The last face may be (but does not have to be) followed by a "-1" index. If the greatest index in the coordIndex field is N, the Coordinate node shall contain N+1 coordinates (indexed as 0 to N). Each face of the IndexedFaceSet shall have:

- at least three non-coincident vertices;
- vertices that define a planar polygon;
- vertices that define a non-self-intersecting polygon.

Otherwise, The results are undefined.

The IndexedFaceSet node is specified in the local coordinate system and is affected by the transformations of its ancestors.

Descriptions of the coord, normal, and texCoord fields are provided in the SoVRMLCoordinate, SoVRMLNormal, and SoVRMLTextureCoordinate nodes, respectively.

Details on lighting equations and the interaction between color field, normal field, textures, materials, and geometries are provided in 4.14, Lighting model.

If the color field is not NULL, it shall contain a Color node whose colours are applied to the vertices or faces of the IndexedFaceSet as follows:

- If colorPerVertex is FALSE, colours are applied to each face, as follows:
  - If the colorIndex field is not empty, then one colour is used for each face of the IndexedFaceSet. There shall be at least as many indices in the colorIndex field as there are faces in the IndexedFaceSet. If the greatest index in the colorIndex field is N, then there shall be N+1 colours in the Color node. The colorIndex field shall not contain any negative entries.
  - If the colorIndex field is empty, then the colours in the Color node are applied to each face of the IndexedFaceSet in order. There shall be at least as many colours in the Color node as there are faces.
- If colorPerVertex is TRUE, colours are applied to each vertex, as follows:
  - If the colorIndex field is not empty, then colours are applied to each vertex of the IndexedFaceSet in exactly the same manner that the coordIndex field is used to choose coordinates for each vertex from the Coordinate node. The colorIndex field shall contain at least as many indices as the coordIndex field, and shall contain end-of-face markers (-1) in exactly the same places as the coordIndex field. If the greatest index in the colorIndex field is N, then there shall be N+1 colours in the Color node.
  - If the colorIndex field is empty, then the coordIndex field is used to choose colours from the Color node. If the greatest index in the coordIndex field is N, then there shall be N+1 colours in the Color node.

If the color field is NULL, the geometry shall be rendered normally using the Material and texture defined in the Appearance node (see 4.14, Lighting model, for details http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.5).

If the normal field is not NULL, it shall contain a Normal node whose normals are applied to the vertices or faces of the IndexedFaceSet in a manner exactly equivalent to that described above for applying colours to vertices/faces (where normalPerVertex corresponds to colorPerVertex and normalIndex corresponds to colorIndex). If the normal field is NULL, the browser shall automatically generate normals, using creaseAngle to determine if and how normals are smoothed across shared vertices (see 4.6.3.5, Crease angle field).

If the texCoord field is not NULL, it shall contain a TextureCoordinate node. The texture coordinates in that node are applied to the vertices of the IndexedFaceSet as follows: If the texCoordIndex field is not empty, then it is used to choose texture coordinates for each vertex of the IndexedFaceSet in exactly the same manner that the coordIndex field is used to choose coordinates for each vertex from the Coordinate node. The texCoordIndex field shall contain at least as many indices as the coordIndex field, and shall contain end-of-face markers (-1) in exactly the same places as the coordIndex field. If the greatest index in the texCoordIndex field is N, then there shall be N+1 texture coordinates in the TextureCoordinate node.

If the texCoordIndex field is empty, then the coordIndex array is used to choose texture coordinates from the TextureCoordinate node. If the greatest index in the coordIndex field is N, then there shall be N+1 texture coordinates in the TextureCoordinate node. If the texCoord field is NULL, a default texture coordinate mapping is calculated using the local coordinate system bounding box of the shape. The longest dimension of the bounding box defines the S coordinates, and the next longest defines the T coordinates. If two or all three dimensions of the bounding box are equal, ties shall be broken by choosing the X, Y, or Z dimension in that order of preference. 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. Figure 6.10 illustrates the default texture coordinates for a simple box shaped IndexedFaceSet with an X dimension twice as large as the Z dimension and four times as large as the Y dimension. Figure 6.11 illustrates the original texture image used on the IndexedFaceSet used in Figure 6.10.

Figure 6.10

Figure 6.11

Subclause 4.6.3, Shapes and geometry (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.5), provides a description of the ccw, solid, convex, and creaseAngle fields.

## Constructor & Destructor Documentation

SoVRMLIndexedFaceSet::SoVRMLIndexedFaceSet | ( | void |  | ) |

Constructor.

SoVRMLIndexedFaceSet::~SoVRMLIndexedFaceSet | ( |  | ) |
| protectedvirtual

Destructor.

## Member Function Documentation

SoType SoVRMLIndexedFaceSet::getTypeId | ( | void |  | ) | const
| virtual

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and "downward" casting.

Usage example:

void foo(SoNode * node)
{
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
}
}

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoVRMLIndexedShape.

const SoFieldData * SoVRMLIndexedFaceSet::getFieldData | ( | void |  | ) | const
| protectedvirtual

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns `NULL`.

Reimplemented from SoVRMLIndexedShape.

void SoVRMLIndexedFaceSet::GLRender | ( | SoGLRenderAction * | action | ) |
| virtual

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method.

Reimplemented from SoVRMLVertexShape.

void SoVRMLIndexedFaceSet::getPrimitiveCount | ( | SoGetPrimitiveCountAction * | action | ) |
| virtual

Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.

Reimplemented from SoShape.

SbBool SoVRMLIndexedFaceSet::generateDefaultNormals | ( | SoState * | s,
|  | SoNormalBundle * | nb
| ) |  |
| virtual

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Subclasses should override this method to generate default normals using the SoNormalBundle class. `TRUE` should be returned if normals were generated, `FALSE` otherwise.

Default method returns `FALSE`.

This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

Reimplemented from SoVRMLVertexShape.

SbBool SoVRMLIndexedFaceSet::generateDefaultNormals | ( | SoState * | s,
|  | SoNormalCache * | nc
| ) |  |
| virtual

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Subclasses should override this method to generate default normals using the SoNormalCache class. This is more effective than using SoNormalGenerator. Return `TRUE` if normals were generated, `FALSE` otherwise.

Default method just returns `FALSE`.

This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

Reimplemented from SoVRMLVertexShape.

void SoVRMLIndexedFaceSet::generatePrimitives | ( | SoAction * | action | ) |
| protectedvirtual

The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)

The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.

Implements SoShape.

## Member Data Documentation

SoSFBool SoVRMLIndexedFaceSet::ccw

Specifies if vertex ordering is counterclockwise. Default value is TRUE.

SoSFBool SoVRMLIndexedFaceSet::solid

Can be used to enable backface culling. Default value is TRUE.

SoSFBool SoVRMLIndexedFaceSet::convex

Specifies if all polygons are convex. Default value is TRUE.

SoSFFloat SoVRMLIndexedFaceSet::creaseAngle

Specifies the crease angle for the generated normals. Default value is 0.0.

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

- SoVRMLIndexedFaceSet.h
- IndexedFaceSet.cpp

Copyright © 1998-2010 by Kongsberg Oil & Gas Technologies. All rights reserved.