osg::BlendColor Class Reference

Encapsulates OpenGL blend/transparency state. More...

Inheritance diagram for osg::BlendColor:

Inheritance graph
[legend]
List of all members.

Public Member Functions

 BlendColor ()
 BlendColor (const BlendColor &trans, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 Copy constructor using CopyOp to manage deep vs shallow copy.
 META_StateAttribute (osg, BlendColor, BLENDCOLOR)
virtual int compare (const StateAttribute &sa) const
 Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
virtual bool getModeUsage (ModeUsage &usage) const
void setConstantColor (const osg::Vec4 &color)
osg::Vec4 getConstantColor () const
virtual void apply (State &state) const
 apply the OpenGL state attributes.

Static Public Member Functions

static ExtensionsgetExtensions (unsigned int contextID, bool createIfNotInitalized)
 Returns the Extensions object for the given context.
static void setExtensions (unsigned int contextID, Extensions *extensions)
 setExtensions() allows users to override the extensions across graphics contexts.

Protected Member Functions

virtual ~BlendColor ()

Protected Attributes

osg::Vec4 _constantColor

Classes

class  Extensions
 Encapsulates queries of extension availability, obtains extension function pointers, and provides convinience wrappers for calling extension functions. More...

Detailed Description

Encapsulates OpenGL blend/transparency state.


Constructor & Destructor Documentation

BlendColor::BlendColor  ) 
 

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

Copy constructor using CopyOp to manage deep vs shallow copy.

BlendColor::~BlendColor  )  [protected, virtual]
 


Member Function Documentation

void BlendColor::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::BlendColor::compare const StateAttribute sa  )  const [inline, virtual]
 

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

Implements osg::StateAttribute.

osg::Vec4 osg::BlendColor::getConstantColor  )  const [inline]
 

BlendColor::Extensions * BlendColor::getExtensions unsigned int  contextID,
bool  createIfNotInitalized
[static]
 

Returns the Extensions object for the given context.

If createIfNotInitalized is true and the Exentsions object doesn't exist, getExtensions() creates it on the given context. Returns NULL if createIfNotInitalized is false and the Extensions object doesn't exist.

virtual bool osg::BlendColor::getModeUsage ModeUsage &  usage  )  const [inline, virtual]
 

osg::BlendColor::META_StateAttribute osg  ,
BlendColor  ,
BLENDCOLOR 
 

void osg::BlendColor::setConstantColor const osg::Vec4 color  )  [inline]
 

void BlendColor::setExtensions unsigned int  contextID,
Extensions extensions
[static]
 

setExtensions() allows users to override the extensions across graphics contexts.

Typically used when you have different extensions supported across graphics pipes, but need to ensure that they all use the same low common denominator extensions.


Member Data Documentation

osg::Vec4 osg::BlendColor::_constantColor [protected]
 


The documentation for this class was generated from the following files:
Generated at Wed Mar 8 21:49:43 2006 for the OpenSceneGraph by doxygen 1.4.6.