SoMaterialBinding(3)

📦 version 2.5.0, in fedora 43, fedora 44

okay bestie, welcome to the SoMaterialBinding(3) page from the Library Functions Manual. This is part 1, and it's giving ✨node energy✨, so let's get into it.

✨ NAME ✨

SoMaterialBinding — the class that's literally a node for setting up how materials are mapped to shapes. It's the "which material goes where" plug, and we're obsessed. 💅

🦋 SYNOPSIS 🦋

#include <Inventor/nodes/SoMaterialBinding.h>

Inherits SoNode.

🎀 Public Types 🎀

The Binding enum, exactly as written, no cap:

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,
    DEFAULT = OVERALL,
    NONE = OVERALL
}

🧸 Public Types inherited from SoNode 🧸

The NodeType enum, coming in hot:

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
}

💅 Public Member Functions 💅

These are the main character methods that belong to SoMaterialBinding itself:

  • virtual SoType getTypeId (void) const
  • SoMaterialBinding (void)
  • virtual void doAction (SoAction *action)
  • virtual void GLRender (SoGLRenderAction *action)
  • virtual void callback (SoCallbackAction *action)
  • virtual void pick (SoPickAction *action)
  • virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

🫶 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=0) const
  • virtual SbBool affectsState (void) const
  • virtual void GLRenderBelowPath (SoGLRenderAction *action)
  • virtual void GLRenderInPath (SoGLRenderAction *action)
  • virtual void GLRenderOffPath (SoGLRenderAction *action)
  • virtual void getBoundingBox (SoGetBoundingBoxAction *action)
  • virtual void getMatrix (SoGetMatrixAction *action)
  • virtual void handleEvent (SoHandleEventAction *action)
  • virtual void rayPick (SoRayPickAction *action)
  • virtual void search (SoSearchAction *action)
  • virtual void write (SoWriteAction *action)
  • virtual void audioRender (SoAudioRenderAction *action)
  • virtual void grabEventsSetup (void)
  • virtual void grabEventsCleanup (void)
  • virtual void startNotify (void)
  • virtual void notify (SoNotList *l)
  • 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=0)
  • 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 *in)
  • void get (SbString &fielddata, SoOutput *out)
  • virtual SbBool validateNewFieldValue (SoField *field, void *newval)
  • virtual void addWriteReference (SoOutput *out, SbBool isfromfield=0)
  • SbBool getIsBuiltIn (void) 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 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 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 *in, SoBase *&base, SoType expectedtype)
  • static void setInstancePrefix (const SbString &c)
  • static void setTraceRefs (SbBool trace)
  • static SbBool getTraceRefs (void)
  • static SbBool connectRoute (SoInput *in, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
  • static SbBool readRoute (SoInput *in)

🍓 Public Attributes 🍓

  • SoSFEnum value

🔒 Protected Member Functions 🔒

  • virtual const SoFieldData * getFieldData (void) const
  • virtual ~SoMaterialBinding ()

🔐 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)
  • ~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 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 🌈

🔮 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 = 0
  • static int nextActionMethodIndex = 0

🔥 Detailed Description 🔥

okay so SoMaterialBinding is literally a node for setting up how materials are mapped to shapes. The material binding specified in nodes of this type decides how the material values of SoMaterial nodes are mapped on the builtin geometry shape nodes.

The exact meaning of a binding depends on what particular shape type a material or a set of materials are applied to.

Here's a very simple usage example, no cap:

#Inventor V2.1 ascii

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

   Material {
      diffuseColor [ 1 0 0, 1 1 0, 0 0 1 ]
   }

   MaterialBinding {
      value PER_VERTEX_INDEXED
   }

   IndexedFaceSet {
      coordIndex [ 0, 1, 2, -1 ]
      materialIndex [ 0, 1, 0 ]
   }
}

With SoMaterialBinding::value set to PER_VERTEX_INDEXED above, the material indices will be taken from the SoIndexedFaceSet::materialIndex field when rendering.

If SoMaterialBinding::value was set to PER_VERTEX_INDEXED as above, and the SoIndexedFaceSet::materialIndex was undefined or empty, indices would implicitly be taken from the SoIndexedFaceSet::coordIndex field.

If SoMaterialBinding::value is set to PER_VERTEX, colors will be fetched in a monotonically increasing manner from the SoMaterial::diffuseColor field, starting at index 0.

FILE FORMAT/DEFAULTS:

MaterialBinding {
    value OVERALL
}

👑 See also 👑

  • SoMaterial

✨ Member Enumeration Documentation ✨

enum SoMaterialBinding::Binding

Enumeration of available types of material binding. Bestie, this is the whole menu of ways you can slap materials onto your shapes, so let's get into it 💅

  • OVERALL — Apply the same material to the complete shape. One material, one shape, no drama. Simple. Iconic.
  • PER_PART — Get a new material from the pool of material values for each part of the shape, where the definition of a part depends on the shape type.

Materials are fetched from index 0 and onwards, incrementing the index into the material pool by 1 for each new part in the order defined by the particular shape type.

Important portability note 🚨: it was previously allowed with the SGI Inventor library to supply too few colors versus the number of parts of the subsequent shapes in the scene graph. Coloring would then cycle through the available colors.

Since SGI Open Inventor v2.1, this was disallowed, though — enough colors for all parts must be supplied, or behavior will be unspecified (likely to cause a crash, in fact 😭). Note that the «Inventor Mentor» book contains a description of the old, invalid behavior in Chapter 5, section "Binding Nodes" (middle of page 128 in the 10th printing).

  • PER_PART_INDEXED — Get a new material from the pool of material values for each part of the shape, where the definition of a part depends on the shape type.

Materials are fetched by the index value settings of the shape.

  • PER_FACE — Get a new material from the pool of material values for each polygon face of the shape.

Materials are fetched from index 0 and onwards, incrementing the index into the material pool by 1 for each new face of the shape node.

Note that individual faces after tessellation of complex shapes (like SoCylinder nodes) are not considered to be separate entities, and so this binding will be treated in the same manner as SoMaterialBinding::PER_PART for those.

  • PER_FACE_INDEXED — Get a new material from the pool of material values for each polygon face of the shape.

Materials are fetched by the index value settings of the shape.

Note that individual faces after tessellation of complex shapes (like SoCylinder nodes) are not considered to be separate entities, and so this binding will be treated in the same manner as SoMaterialBinding::PER_PART_INDEXED for those.

  • PER_VERTEX — Get a new material from the pool of material values for each polygon, line or point vertex of the shape.

Materials are fetched from index 0 and onwards, incrementing the index into the material pool by 1 for each new vertex of the shape node.

  • PER_VERTEX_INDEXED — Get a new material from the pool of material values for each polygon, line or point vertex of the shape.

Materials are fetched by the index value settings of the shape.

  • DEFAULT — Obsolete. Don't use this value. fr fr, leave it alone 🙈
  • NONE — Obsolete. Don't use this value. same energy, do not touch 💀

🎀 Constructor & Destructor Documentation 🎀

SoMaterialBinding::SoMaterialBinding (void )

Constructor.

References DEFAULT, NONE, OVERALL, PER_FACE, PER_FACE_INDEXED, PER_PART, PER_PART_INDEXED, PER_VERTEX, PER_VERTEX_INDEXED, SoMaterialBinding(), and value.

Referenced by getFieldData(), and SoMaterialBinding().

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

Destructor.

🌸 Member Function Documentation 🌸

SoType SoMaterialBinding::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
  }
  else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
    SoGroup * group = (SoGroup *)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.

Implements SoBase.

const SoFieldData * SoMaterialBinding::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 SoFieldContainer.

References SoMaterialBinding().

void SoMaterialBinding::doAction (SoAction * action) [virtual]

This function performs the typical operation of a node for any action.

Reimplemented from SoNode.

References SoOverrideElement::getMaterialBindingOverride(), SoAction::getState(), SoNode::isOverride(), SoOverrideElement::setMaterialBindingOverride(), and value.

Referenced by callback(), getPrimitiveCount(), GLRender(), and pick().

void SoMaterialBinding::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 SoNode.

References doAction().

void SoMaterialBinding::callback (SoCallbackAction * action) [virtual]

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoNode.

References doAction().

void SoMaterialBinding::pick (SoPickAction * action) [virtual]

Action method for SoPickAction.

Does common processing for SoPickAction action instances.

Reimplemented from SoNode.

References doAction().

void SoMaterialBinding::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 SoNode.

References doAction().

💖 Member Data Documentation 💖

SoSFEnum SoMaterialBinding::value

The material binding to use for subsequent shape nodes in the scene graph. The default binding is SoMaterialBinding::OVERALL.

Referenced by doAction(), and SoMaterialBinding().

👑 Author

Generated automatically by Doxygen for Coin from the source code.

And that's a wrap, bestie 🫶 this whole page came straight out of the Doxygen oven for Coin, version 2.5.0, and it's the SoMaterialBinding(3) page — so if you ever need to cite it, that's the vibe. Now go bind some materials and slay 💅✨

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