SoTriangleStripSet(3)

📦 version 3.1.3, in fedora 43, fedora 44

💖 SoTriangleStripSet(3) — Library Functions Manual 💖

okay bestie, this is the manual page for SoTriangleStripSet(3) from the Library Functions Manual. she's a whole class, and she is used to render and control non-indexed triangle strips. no cap, she's iconic. 💅

📛 NAME

SoTriangleStripSet — the class that renders and controls non-indexed triangle strips. periodt. ✨

✨ SYNOPSIS

#include <Inventor/nodes/SoTriangleStripSet.h>

Inherits SoNonIndexedShape.

she has layers, iykyk. 🦋

Public Member Functions 💅

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

Public Member Functions inherited from SoVertexShape 🦋

  • virtual void notify (SoNotList *nl)
  • 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 ~SoTriangleStripSet ()
  • 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)

to be continued… ✨

Okay so picking right back up with the rest of the protected squad from SoShape — every single one, no skips, 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)

Like, that's the whole list 💅 moving on.

🌈 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 SoNonIndexedShape

  • static const SoFieldData ** getFieldDataPtr (void)

✨ Static Protected Member Functions inherited from SoVertexShape

  • 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 SoShape

enum TriangleShape — and bestie, these are the flavours:

enum TriangleShape { TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON,
    QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP }

🌸 Public Types inherited from SoNode

enum NodeType — the whole roster, every hex value exactly as written:

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:

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 SoTriangleStripSet class is used to render and control non-indexed triangle strips. Periodt.

Triangle strips are specified using the numVertices field.

Coordinates, normals, materials and texture coordinates are all fetched in order from the current state or from the vertexProperty node if set. (To render triangle strips from vertex indices, use the SoIndexedTriangleStripSet node instead — different girl, different job.)

The numVertices field may be used for multiple strips, and coordinates will be fetched with a monotonically increasing index from the coordinates on the traversal state stack (i.e. typically from the last SoCoordinate3 node encountered during traversal). The way that it just keeps counting up? Iconic.

For example, if numVertices is set to [3, 4, 5, 3], this node would specify a triangle from coordinates 0, 1 and 2, a triangle strip from coordinates 3, 4, 5 and 6, a triangle strip from coordinates 7, 8, 9, 10 and 11 and finally a triangle from coordinates 12, 13, 14.

Or to put it another way: in a tristrip there will always be two vertices more than there are triangles. Realize that you are handling data on the vertex level (not polygon-level), and that the triangles are laid out like this, given 5 vertices:

1-----3-----5
 \   / \   /
  \ /   \ /
   2-----4

The above figure in scene graph file format:

#Inventor V2.1 ascii

Separator {
  Coordinate3 {
    point [ -2 1 0, -1 -1 0, 0 1 0, 1 -1 0, 2 1 0 ]
  }

  TriangleStripSet {
    numVertices [ 5 ]
  }
}

The scene graph above in a viewer:

Strips are converted into triangles the way OpenGL does it, of course, so for the dirty details, check out the documentation of OpenGL's GL_TRIANGLE_STRIP primitive rendering type. iykyk 🫶

Binding PER_PART (per strip), 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.

FILE FORMAT/DEFAULTS:

TriangleStripSet {
    vertexProperty NULL
    startIndex 0
    numVertices -1
}

👀 See also

  • SoIndexedTriangleStripSet

🛠️ Constructor & Destructor Documentation 🛠️

🌟 SoTriangleStripSet::SoTriangleStripSet (void )

Constructor. Yes ma'am, that's the whole thing.

🌟 SoTriangleStripSet::~SoTriangleStripSet () [protected], [virtual]

Destructor.

💖 MEMBER FUNCTION DOCUMENTATION 💖

okay bestie, this is the member function section, and we are going through every single one. no skipping, no summarizing, periodt. ✨

SoType SoTriangleStripSet::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 SoNonIndexedShape.

const SoFieldData * SoTriangleStripSet::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.

Reimplemented from SoNonIndexedShape.

void SoTriangleStripSet::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 SoShape.

void SoTriangleStripSet::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 SoTriangleStripSet::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.

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 SoVertexShape.

void SoTriangleStripSet::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().)

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 SoTriangleStripSet::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().)

The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.

Implements SoShape.

SbBool SoTriangleStripSet::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 🍓

SoMFInt32 SoTriangleStripSet::numVertices

Specifies the number of vertices in each triangle strip. The vertices are fetched from the current coordinate node, or from the vertexProperty field if present.

🌸 AUTHOR 🌸

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okay that's the whole page, bestie! this came from Coin, Version 3.1.3, and it's SoTriangleStripSet(3) — the footer didn't have a date, so no cap, we're not making one up. 💖✨

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