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osg::BlendFunc Class Reference

BlendFunc - encapsulates the OpenGL blend/transparency state. More...

Inheritance diagram for osg::BlendFunc:

Inheritance graph
[legend]
List of all members.

Public Types

enum  BlendFuncMode {
  DST_ALPHA = GL_DST_ALPHA, DST_COLOR = GL_DST_COLOR, ONE = GL_ONE, ONE_MINUS_DST_ALPHA = GL_ONE_MINUS_DST_ALPHA,
  ONE_MINUS_DST_COLOR = GL_ONE_MINUS_DST_COLOR, ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA, ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR, SRC_ALPHA = GL_SRC_ALPHA,
  SRC_ALPHA_SATURATE = GL_SRC_ALPHA_SATURATE, SRC_COLOR = GL_SRC_COLOR, ZERO = GL_ZERO
}

Public Methods

 BlendFunc ()
 BlendFunc (const BlendFunc &trans, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 Copy constructor using CopyOp to manage deep vs shallow copy.

 META_StateAttribute (osg, BlendFunc, BLENDFUNC)
virtual int compare (const StateAttribute &sa) const
 return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.

virtual void getAssociatedModes (std::vector< GLMode > &modes) const
 return the modes associated with this StateSet

void setFunction (const int source, const int destination)
void setSource (const int source)
const int getSource () const
void setDestination (const int destination)
const int getDestination () const
virtual void apply (State &state) const
 apply the OpenGL state attributes.


Protected Methods

virtual ~BlendFunc ()

Protected Attributes

int _source_factor
int _destination_factor

Detailed Description

BlendFunc - encapsulates the OpenGL blend/transparency state.


Member Enumeration Documentation

enum osg::BlendFunc::BlendFuncMode
 

Enumeration values:
DST_ALPHA 
DST_COLOR 
ONE 
ONE_MINUS_DST_ALPHA 
ONE_MINUS_DST_COLOR 
ONE_MINUS_SRC_ALPHA 
ONE_MINUS_SRC_COLOR 
SRC_ALPHA 
SRC_ALPHA_SATURATE 
SRC_COLOR 
ZERO 


Constructor & Destructor Documentation

osg::BlendFunc::BlendFunc  
 

osg::BlendFunc::BlendFunc const BlendFunc &    trans,
const CopyOp   copyop = CopyOp::SHALLOW_COPY
[inline]
 

Copy constructor using CopyOp to manage deep vs shallow copy.

virtual osg::BlendFunc::~BlendFunc   [protected, virtual]
 


Member Function Documentation

virtual void osg::BlendFunc::apply State   state const [virtual]
 

apply the OpenGL state attributes.

The global state for the current OpenGL context is passed in to allow the StateAttribute to obtain details on the the current context and state.

Implements osg::StateAttribute.

virtual int osg::BlendFunc::compare const StateAttribute   sa const [inline, virtual]
 

return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.

Implements osg::StateAttribute.

virtual void osg::BlendFunc::getAssociatedModes std::vector< GLMode > &    modes const [inline, virtual]
 

return the modes associated with this StateSet

Reimplemented from osg::StateAttribute.

const int osg::BlendFunc::getDestination   const [inline]
 

const int osg::BlendFunc::getSource   const [inline]
 

osg::BlendFunc::META_StateAttribute osg   ,
BlendFunc   ,
BLENDFUNC   
 

void osg::BlendFunc::setDestination const int    destination [inline]
 

void osg::BlendFunc::setFunction const int    source,
const int    destination
[inline]
 

void osg::BlendFunc::setSource const int    source [inline]
 


Member Data Documentation

int osg::BlendFunc::_destination_factor [protected]
 

int osg::BlendFunc::_source_factor [protected]
 


The documentation for this class was generated from the following file:
Generated at Wed Sep 18 13:55:26 2002 for the Open Scene Graph by doxygen 1.2.16.