SoFaceSet(3)

📦 version 3.1.3, in fedora 43, fedora 44

💖 SoFaceSet(3) — Library Functions Manual 💖

✨ NAME ✨

SoFaceSet — bestie, this class is literally used to render and organize non-indexed polygonal face data. No cap. 💅

🌈 SYNOPSIS 🌈

#include <Inventor/nodes/SoFaceSet.h>

Inherits SoNonIndexedShape.

okay so let's get into the functions, because there are a LOT of them. Don't worry, we're keeping every single one. 💖

💅 Public Member Functions 💅

  • virtual SoType getTypeId (void) const
  • SoFaceSet (void)
  • virtual void GLRender (SoGLRenderAction *action)
  • virtual SbBool generateDefaultNormals (SoState *state, SoNormalBundle *nb)
  • virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

💅 Public Member Functions inherited from SoVertexShape 💅

  • virtual void write (SoWriteAction *action)

💅 Public Member Functions inherited from SoShape 💅

  • virtual SbBool affectsState (void) const
  • virtual void getBoundingBox (SoGetBoundingBoxAction *action)
  • virtual void rayPick (SoRayPickAction *action)
  • virtual void callback (SoCallbackAction *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 doAction (SoAction *action)
  • 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 pick (SoPickAction *action)
  • virtual void search (SoSearchAction *action)
  • virtual void audioRender (SoAudioRenderAction *action)
  • virtual void grabEventsSetup (void)
  • virtual void grabEventsCleanup (void)
  • virtual void startNotify (void)
  • uint32_t getNodeId (void) const
  • virtual SoChildList * getChildren (void) const
  • virtual void writeInstance (SoOutput *out)
  • virtual SoNode * addToCopyDict (void) const
  • virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)
  • 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 SoNonIndexedShape ✨

  • static SoType getClassTypeId (void)
  • static void initClass (void)

✨ Static Public Member Functions inherited from SoVertexShape ✨

  • 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 🌸

  • SoMFInt32 numVertices

🌸 Public Attributes inherited from SoNonIndexedShape 🌸

  • SoSFInt32 startIndex

🌸 Public Attributes inherited from SoVertexShape 🌸

  • SoSFNode vertexProperty

🦋 Protected Member Functions 🦋

  • virtual const SoFieldData * getFieldData (void) const
  • virtual ~SoFaceSet ()
  • virtual void generatePrimitives (SoAction *action)
  • virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
  • virtual SbBool generateDefaultNormals (SoState *, SoNormalCache *)

🦋 Protected Member Functions inherited from SoNonIndexedShape 🦋

  • SoNonIndexedShape (void)
  • virtual ~SoNonIndexedShape ()
  • void computeCoordBBox (SoAction *action, int numVertices, SbBox3f &box, SbVec3f &center)
  • void fixNumVerticesPointers (SoState *state, const int32_t *&start, const int32_t *&end, int32_t *dummyarray) const

🦋 Protected Member Functions inherited from SoVertexShape 🦋

  • SoVertexShape (void)
  • virtual ~SoVertexShape ()
  • virtual SbBool shouldGLRender (SoGLRenderAction *action)
  • void setNormalCache (SoState *const state, const int num, const 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 SoShape 💅

okay so bestie, these are the protected member functions you inherit from SoShape, and they're literally all here, no cap:

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)

that's a whole lot of functions, but you got this 💖

💅 Protected Member Functions inherited from SoNode 💅

and here's what you get from SoNode, bestie:

SoNode (void)
virtual ~SoNode ()
virtual SbBool readInstance (SoInput *in, unsigned short flags)

💅 Protected Member Functions inherited from SoFieldContainer 💅

from SoFieldContainer, we have:

SoFieldContainer (void)
virtual ~SoFieldContainer ()

💅 Protected Member Functions inherited from SoBase 💅

and 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 💅

okay so static protected member functions, these are like the class-level besties:

  • static const SoFieldData ** getFieldDataPtr (void) — returns the field data pointer, iconic.

💅 Static Protected Member Functions inherited from SoNonIndexedShape 💅

  • static const SoFieldData ** getFieldDataPtr (void) — same vibe, different class.

💅 Static Protected Member Functions inherited from SoVertexShape 💅

  • static const SoFieldData ** getFieldDataPtr (void) — you know it, you love it.

💅 Static Protected Member Functions inherited from SoShape 💅

  • static const SoFieldData ** getFieldDataPtr (void) — still here, still slaying.

💅 Static Protected Member Functions inherited from SoNode 💅

from SoNode, we have a whole squad:

  • 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 💅

and from SoBase:

  • static uint32_t getCurrentWriteCounter (void)
  • static void staticDataLock (void)
  • static void staticDataUnlock (void)

💅 Additional Inherited Members 💅

okay so there's even more stuff you inherit, let's get into it:

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 ✨

okay so the SoFaceSet class is literally used to render and organize non-indexed polygonal face data. it's giving geometry realness 💅

Faces are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 5, 3], this node would specify a triangle from coordinates 0, 1 and 2, a quad from coordinates 3, 4, 5 and 6, a polygon from coordinates 7, 8, 9, 10 and 11 and finally a triangle from coordinates 12, 13, 14. no cap, that's exactly how it works.

Binding PER_VERTEX, PER_FACE or OVERALL can be set for material, and normals. The default material binding is OVERALL. The default normal binding is PER_VERTEX. so if you don't set it, that's the vibe.

For more elaborate documentation about face sets, see the class documentation of the SoIndexedFaceSet node, which contains examples and more detailed information about various issues also relevant for this node. go check it out bestie.

FILE FORMAT/DEFAULTS:

FaceSet {
    vertexProperty NULL
    startIndex 0
    numVertices -1
}

See also:

  • SoIndexedFaceSet
  • SoIndexedTriangleStripSet

✨ Constructor & Destructor Documentation ✨

SoFaceSet::SoFaceSet (void )

Constructor. it constructs, periodt.

SoFaceSet::~SoFaceSet () [protected], [virtual]

Destructor. it destructs, no cap. protected and virtual, so you know it's special.

✨ Member Function Documentation ✨

SoType SoFaceSet::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. it's like the ID check but for C++ objects, iconic.

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. so if you're extending, you gotta do this, bestie.

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

Reimplemented from SoNonIndexedShape.

const SoFieldData * SoFaceSet::getFieldData (void ) const [protected], [virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL. so if there's no fields, you get NULL, that's the tea.

Reimplemented from SoNonIndexedShape.

void SoFaceSet::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. so if you're throwing shapes at OpenGL, this is your moment.

Reimplemented from SoShape.

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

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. so like, it's internal, you probably don't need it, but here it is anyway.

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. so if you're on old SGI, sorry bestie.

Reimplemented from SoVertexShape.

void SoFaceSet::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.

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

The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().) so don't touch SoNode::callback(), okay?

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.

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

Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.

The bounding box and center point should be calculated and returned in the local coordinate system.

The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses should not override SoNode::getBoundingBox().) again, don't override the node one, bestie.

The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry. so box is empty, center is a mystery, got it.

Implements SoShape.

SbBool SoFaceSet::generateDefaultNormals (SoState * state, SoNormalCache * cache) [protected], [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 SoVertexShape.

✨ MEMBER DATA DOCUMENTATION ✨

okay bestie this is the good part, the actual data 💖

SoMFInt32 SoFaceSet::numVertices

this field is THE moment. it's literally what tells the SoFaceSet where your faces even are. 🫶

So here's the tea: numVertices is an SoMFInt32, and every single entry you put in it says how many coordinates live in one face. that's it, that's the whole vibe. one number per face, and the numbers go in the order you list them.

And then — and this is the part that's giving main character energy — the actual coordinates get pulled in order from one of two places:

  • the state (iykyk, the traversal state), or
  • the vertexProperty node 🌸

like, the coordinates just get scooped up sequentially, no skipping, no reordering, no little games. first face's worth of coordinates, then the next face's worth, and so on down the line. periodt. 💅

no cap, if your numVertices entries don't line up with how many coordinates you're actually handing over, that's a you problem and the geometry will absolutely show it 🙈

🌈 Author 🌈

Generated automatically by Doxygen for Coin from the source code. ✨

so like, no human sat down and lovingly typed this out, the robot did it for us and honestly? slay, we love a hands-off pipeline 👑

and that's the whole page, bestie!! we made it to the end together 🎀 this lil writeup is from the Coin docs, Version 3.1.3, and it's filed under SoFaceSet(3). thanks for reading all three parts, you're literally iconic for that 💖✨🦋

📦 where this page comes from