NAME
SoVRMLAppearance -
The SoVRMLAppearance class specifies visual properties for shapes.
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:
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLAppearance.h>
Inherits SoNode.
Public Member Functions
SoVRMLAppearance (void)
virtual void doAction (SoAction *action)
virtual void callback (SoCallbackAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void search (SoSearchAction *action)
virtual SoChildList * getChildren (void) const
virtual void notify (SoNotList *list)
virtual void copyContents (const SoFieldContainer *from, SbBool
copyConn)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoSFNode material
SoSFNode texture
SoSFNode textureTransform
Protected Member Functions
virtual ~SoVRMLAppearance ()
Detailed Description
The SoVRMLAppearance class specifies visual properties for shapes.
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:
Appearance {
exposedField SFNode material NULL
exposedField SFNode texture NULL
exposedField SFNode textureTransform NULL
}
.fi
The Appearance node specifies the visual properties of geometry. The value for each of the fields in this node may be NULL. However, if the field is non-NULL, it shall contain one node of the appropriate type. The material field, if specified, shall contain a VRMLMaterial node. If the material field is NULL or unspecified, lighting is off (all lights are ignored during rendering of the object that references this Appearance) and the unlit object colour is (1, 1, 1). Details of the VRML lighting model are in 4.14, Lighting model (<http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.14>).
The texture field, if specified, shall contain one of the various types of texture nodes (VRMLImageTexture, VRMLMovieTexture, or VRMLPixelTexture). If the texture node is NULL or the texture field is unspecified, the object that references this Appearance is not textured. The textureTransform field, if specified, shall contain a VRMLTextureTransform node. If the textureTransform is NULL or unspecified, the textureTransform field has no effect.
Constructor & Destructor Documentation
SoVRMLAppearance::SoVRMLAppearance (void) Constructor.
SoVRMLAppearance::~SoVRMLAppearance () [protected, virtual] Destructor.
Member Function Documentation
void SoVRMLAppearance::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.
void SoVRMLAppearance::doAction (SoAction * action) [virtual] This function
performs the typical operation of a node for any action.
Reimplemented from SoNode.
void SoVRMLAppearance::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 SoVRMLAppearance::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 SoVRMLAppearance::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.
SoChildList * SoVRMLAppearance::getChildren (void) const [virtual] Returns
list of children for this node.
Reimplemented from SoNode.
void SoVRMLAppearance::notify (SoNotList * l) [virtual] Notifies all
auditors for this instance when changes are made.
Reimplemented from SoNode.
void SoVRMLAppearance::copyContents (const SoFieldContainer * from, SbBool
copyconnections) [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 SoVRMLAppearance::material Can contain an SoVRMLMaterial node. Is
NULL by default.
SoSFNode SoVRMLAppearance::texture Can contain a texture node. Is NULL by
default.
SoSFNode SoVRMLAppearance::textureTransform Can contain an
SoVRMLTextureTransform node. Is NULL by default.
Author
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