SoNormal - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 4.0.0
Note : Coin

NAMESoNormal − The SoNormal class is a node for providing normals to the state​.

SYNOPSIS
#include <Inventor/nodes/SoNormal​.h> Inherits SoNode​.

Public Member Functionsvirtual SoType getTypeId (void) const
Returns the type identification of an object derived from a class inheriting SoBase​. This is used for run-time type checking and 'downward' casting​.
SoNormal (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)

Static Public Member Functionsstatic SoType getClassTypeId (void)
static void initClass (void)

Public AttributesSoMFVec3f vector

Protected Member Functionsvirtual const SoFieldData * getFieldData (void) const
virtual ~SoNormal ()

Static Protected Member Functionsstatic const SoFieldData ** getFieldDataPtr (void)

Additional Inherited Members

Detailed DescriptionThe SoNormal class is a node for providing normals to the state​. Coin will automatically calculate normals for you if no SoNormal nodes are present in the scene graph, but explicitly setting normals is useful for at least two purposes: 1) a potential increase in performance, 2) you can calculate and use 'incorrect' normals to do various special effects​. FILE FORMAT/DEFAULTS: Normal { vector [ ] } See also SoNormalBinding

Constructor & Destructor Documentation

SoNormal::SoNormal (void)Constructor​.

SoNormal::~SoNormal () [protected], [virtual]Destructor​.

Member Function Documentation

SoType SoNormal::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​. Implements SoBase​.

const SoFieldData * SoNormal::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​.

void SoNormal::doAction (SoAction * action) [virtual]This function performs the typical operation of a node for any action​. Reimplemented from SoNode​.

void SoNormal::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​.

void SoNormal::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​.

void SoNormal::pick (SoPickAction * action) [virtual]Action method for SoPickAction​. Does common processing for SoPickAction action instances​. Reimplemented from SoNode​.

void SoNormal::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​.

Member Data Documentation

SoMFVec3f SoNormal::vectorSets a pool of normal vectors in the traversal state​.

AuthorGenerated automatically by Doxygen for Coin from the source code​.
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Johanes Gumabo
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