SoAlphaPolicy Class Reference

Alpha (transparency) policy node More...

#include <Inventor/nodes/SoAlphaPolicy.h>

Inheritance diagram for SoAlphaPolicy:

List of all members.

Public Types
enum	Policy {   POLICY_AS_IS = 0,   POLICY_OPAQUE = 1,   POLICY_DISCARD = 2 }
Public Member Functions
virtual SoType	getTypeId () const
	SoAlphaPolicy ()
Static Public Member Functions
static SoType	getClassTypeId ()
static Policy	getDefaultPolicy ()
Public Attributes
SoSFEnum	policy

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Detailed Description

Alpha (transparency) policy node

This node sets the current alpha (transparency) comparison policy for the renderer. It affects the blending operation to control how (and if) a transparent object should be rendered.

Current available policies include :

• As is : Use the alpha value of the fragment to control color blending
• Opaque : If the fragment to render has an alpha value greater than 0.0, the object is rendered as opaque (no transparency). If the alpha value is 0.0 the object is considered fully transparent.
• Discard : If the fragment alpha value is different from 1.0, the object is considered fully transparent. Otherwise it's rendered opaque.

SEE ALSO

SoBlendElement

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Member Enumeration Documentation

enum SoAlphaPolicy::Policy

Policy to use.

Enumerator:

POLICY_AS_IS	Use the fragment's alpha value as is.
POLICY_OPAQUE	All semi-transparent fragment (alpha > 0) are considered as opaque.
POLICY_DISCARD	All semi-transparent fragment (alpha < 1) are considered as fully transparent.

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Constructor & Destructor Documentation

SoAlphaPolicy::SoAlphaPolicy

(

)

Default Constructor.

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Member Function Documentation

static SoType SoAlphaPolicy::getClassTypeId

(

)

[static]

Returns the type identifier for this class.

Reimplemented from SoNode.

static Policy SoAlphaPolicy::getDefaultPolicy

(

)

[static]

Get default alpha policy.

virtual SoType SoAlphaPolicy::getTypeId

(

)

const [virtual]

Returns the type identifier for this specific instance.

Reimplemented from SoNode.

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Member Data Documentation

SoSFEnum SoAlphaPolicy::policy

Policy used Please refer to enum Policy.

Default value is POLICY_AS_IS

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

• Inventor/nodes/SoAlphaPolicy.h