SoVRMLShape(3) The SoVRMLShape class holds geometry and geometry appearance nodes.

SYNOPSIS


#include <Inventor/VRMLnodes/SoVRMLShape.h>

Inherits SoNode.

Public Types


enum CacheEnabled { OFF, ON, AUTO }

Public Member Functions


virtual SoType getTypeId (void) const

virtual SbBool affectsState (void) const

virtual void doAction (SoAction *action)

virtual void callback (SoCallbackAction *action)

virtual void GLRender (SoGLRenderAction *action)

virtual void getBoundingBox (SoGetBoundingBoxAction *action)

virtual void rayPick (SoRayPickAction *action)

virtual void search (SoSearchAction *action)

virtual void write (SoWriteAction *action)

virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

virtual SoChildList * getChildren (void) const

virtual void notify (SoNotList *list)

virtual void copyContents (const SoFieldContainer *from, SbBool copyConn)

Static Public Member Functions


static SoType getClassTypeId (void)

static void initClass (void)

static void setNumRenderCaches (int num)

static int getNumRenderCaches (void)

Public Attributes


SoSFNode appearance

SoSFNode geometry

SoSFEnum renderCaching

SoSFEnum boundingBoxCaching

Protected Member Functions


virtual const SoFieldData * getFieldData (void) const

Static Protected Member Functions


static const SoFieldData ** getFieldDataPtr (void)

Additional Inherited Members

Detailed Description

The SoVRMLShape class holds geometry and geometry appearance nodes.

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: 

  Shape {
    exposedField SFNode appearance NULL
    exposedField SFNode geometry   NULL
  }.fi
The Shape node has two fields, appearance and geometry, which are used to create rendered objects in the world. The appearance field contains an SoVRMLAppearance node that specifies the visual attributes (e.g., material and texture) to be applied to the geometry. The geometry field contains a geometry node. The specified geometry node is rendered with the specified appearance nodes applied. See 4.6.3, Shapes and geometry (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.3), and SoVRMLAppearance, for more information.
4.14, Lighting model (http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.14), contains details of the VRML lighting model and the interaction between Appearance nodes and geometry nodes. If the geometry field is NULL, the object is not drawn.

Member Enumeration Documentation

enum SoVRMLShape::CacheEnabled

Used to enumerate cache strategies.

Enumerator:

OFF
Never cache
ON
Always cache
AUTO
Use heuristics to try to figure out the optimal caching policy.

Member Function Documentation

SoType SoVRMLShape::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented from SoNode.

SoType SoVRMLShape::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 ** SoVRMLShape::getFieldDataPtr (void) [static], [protected]

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

Reimplemented from SoNode.

const SoFieldData * SoVRMLShape::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 SoVRMLShape::initClass (void) [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoNode.

SbBool SoVRMLShape::affectsState (void) const [virtual]

Returns TRUE if the node could have any effect on the state during traversal.

If it returns FALSE, no data in the traversal-state will change from the pre-traversal state to the post-traversal state. The SoSeparator node will for instance return FALSE, as it pushes and pops the state before and after traversal of its children. All SoShape nodes will also return FALSE, as just pushing out geometry data to the rendering engine won't affect the actual rendering state.

The default method returns TRUE, on a 'better safe than sorry' philosophy.

Reimplemented from SoNode.

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

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

Reimplemented from SoNode.

void SoVRMLShape::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 SoVRMLShape::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 SoVRMLShape::getBoundingBox (SoGetBoundingBoxAction *action) [virtual]

Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

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

Reimplemented from SoNode.

void SoVRMLShape::rayPick (SoRayPickAction *action) [virtual]

Action method for SoRayPickAction.

Checks the ray specification of the action and tests for intersection with the data of the node.

Nodes influencing relevant state variables for how picking is done also overrides this method.

Reimplemented from SoNode.

void SoVRMLShape::search (SoSearchAction *action) [virtual]

Action method for SoSearchAction.

Compares the search criteria from the action to see if this node is a match. Searching is done by matching up all criteria set up in the SoSearchAction -- if any of the requested criteria is a miss, the search is not deemed successful for the node.

See also:

SoSearchAction

Reimplemented from SoNode.

void SoVRMLShape::write (SoWriteAction *action) [virtual]

Action method for SoWriteAction.

Writes out a node object, and any connected nodes, engines etc, if necessary.

Reimplemented from SoNode.

void SoVRMLShape::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.

SoChildList * SoVRMLShape::getChildren (void) const [virtual]

Returns list of children for this node.

Reimplemented from SoNode.

void SoVRMLShape::notify (SoNotList *l) [virtual]

Notifies all auditors for this instance when changes are made.

Reimplemented from SoNode.

void SoVRMLShape::copyContents (const SoFieldContainer *from, SbBoolcopyconnections) [virtual]

Makes a deep copy of all data of from into this instance, except external scenegraph references if copyconnections is FALSE.

This is the protected method that should be overridden by extension node / engine / dragger / whatever subclasses which needs to account for internal data that are not handled automatically.

For copying nodes from application code, you should not invoke this function directly, but rather call the SoNode::copy() function: 

  SoNode * mynewnode = templatenode->copy();

The same also goes for engines.

Make sure that when you override the copyContents() method in your extension class that you also make it call upwards to it's parent superclass in the inheritance hierarchy, as copyContents() in for instance SoNode and SoFieldContainer does important work. It should go something like this: 

  void
  MyCoinExtensionNode::copyContents(const SoFieldContainer * from,
                                    SbBool copyconnections)
  {
    // let parent superclasses do their thing (copy fields, copy
    // instance name, etc etc)
    SoNode::copyContents(from, copyconnections);
    // [..then copy internal data..]
  }


 

Reimplemented from SoNode.

Member Data Documentation

SoSFNode SoVRMLShape::appearance

Can store an SoVRMLAppearance node, or NULL.

SoSFNode SoVRMLShape::geometry

Can store any SoVRMLGeometry subclass, or NULL.

SoSFEnum SoVRMLShape::renderCaching

Render caching strategy. Default value is AUTO.

SoSFEnum SoVRMLShape::boundingBoxCaching

Bounding box caching strategy. Default value is AUTO.

Author

Generated automatically by Doxygen for Coin from the source code.

LAST SEARCHED