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sglOverrideStateNode Class Reference

#include <sglOverrideStateNode.hpp>

Inheritance diagram for sglOverrideStateNode::

List of all members.

Public Methods
	sglOverrideStateNode ()
virtual	~sglOverrideStateNode ()
void	setStatelets (const vector< sglStatelet *> &statelets)
const vector<sglStatelet*>&	getStatelets () const
virtual sglNode*	clone (unsigned int mode) const
virtual void	printInfo (ostream &ostrm, const char *indent_string) const
Protected Methods
virtual void	cull (sglCull< float > &trav_state, unsigned int cull_flags) const
virtual void	cull (sglCull< double > &trav_state, unsigned int cull_flags) const
void	copyTo (sglOverrideStateNode *dst, unsigned int mode) const
Protected Attributes
vector<sglStatelet*>	m_statelets

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Detailed Description

An sglOverrideStateNode is a container of sglStatelets that override the state specified in node below it in the scene graph. These statelets take precedence over those in sglOverrideStateNodes lower in the scene graph, but not those higher in the graph. These statelets also have higher priority than those in sglDefaultStateNodes and sglDrawable nodes.

Example:

   vector<sglStatelet*> override_statelets;
   override_statelets.push_back(new sglLighting(false));

   // sets the override lighting mode to OFF for all nodes below this one.
   sglOverrideStateNode *override_node = new sglOverrideStateNode;
   override_node->setStatelets(override_statelets);

   override_node->addChild(...);

Definition at line 55 of file sglOverrideStateNode.hpp.

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Constructor & Destructor Documentation

sglOverrideStateNode::sglOverrideStateNode ( )

default constructor.

sglOverrideStateNode::~sglOverrideStateNode ( ) [virtual]

virtual destructor.

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Member Function Documentation

void sglOverrideStateNode::setStatelets ( const vector< sglStatelet *> & statelets )

Set the current set of default statelets from the vector provided. The new statelets' reference counts are incremented, while the previous statelets are decremented, and if their reference counts go to zero they are deleted. Parameters: statelets   Vector of new statelets (that are dynamically allocated).

const vector< sglStatelet *> & sglOverrideStateNode::getStatelets ( ) const

Get a reference to the current set of override statelets. Returns: A reference to the internal list of statelets.

virtual sglNode* sglOverrideStateNode::clone ( unsigned int mode ) const [virtual]

Make a copy of the scenegraph rooted at this node. Parameters: mode   Bit masks to control the behaviour of the clone. These are OR-ed together from the mode values in sglObject::CloneModeEnum. Returns: Pointer to root of cloned scene graph. Reimplemented from sglGroup.

virtual void sglOverrideStateNode::printInfo ( ostream & ostrm, const char * indent_string ) const [virtual]

Output the state of this node to the specified ostream. Parameters: ostrm   the ostream to which the output is sent indent_string   the string (usually spaces) that is output at the beginning of every line of output Reimplemented from sglGroup.

virtual void sglOverrideStateNode::cull ( sglCull< float > & trav_state, unsigned int cull_flags ) const [protected, virtual]

The single precision cull traversal function that culls out subgraphs that do not lie in the view frustum (stored in the sglCull parameter). Subclasses must implement this function. The entry point for user-friendly culling is in the sglScene class. Parameters: trav_state   The single precision traversal state that collects all the state and geometry information that passes the cull. cull_flags   Bit flags that indicate which planes of the view frustum (polytope) still need to be tested to determine if bounding spheres and boxes lie within the frustum. Cull-free drawing can be accomplished with cull_flags = 0. Reimplemented from sglGroup.

virtual void sglOverrideStateNode::cull ( sglCull< double > & trav_state, unsigned int cull_flags ) const [protected, virtual]

The double precision cull traversal function that culls out subgraphs that do not lie in the view frustum (stored in the sglCull parameter). Subclasses must implement this function. The entry point for user-friendly culling is in the sglScene class. Parameters: trav_state   The single precision traversal state that collects all the state and geometry information that passes the cull. cull_flags   Bit flags that indicate which planes of the view frustum (polytope) still need to be tested to determine if bounding spheres and boxes lie within the frustum. Cull-free drawing can be accomplished with cull_flags = 0. Reimplemented from sglGroup.

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The documentation for this class was generated from the following file:

• sglOverrideStateNode.hpp

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