osg::ImageBlackmanFilter Class Reference

#include <OSGImageScaler.h>

Inheritance diagram for osg::ImageBlackmanFilter:

List of all members.

Public Member Functions
	ImageBlackmanFilter (osg::Real64 dWidth=osg::Real64(0.5))
virtual	~ImageBlackmanFilter (void)
virtual osg::Real64	filter (osg::Real64 dVal) const
osg::Real64	getWidth (void) const
void	setWidth (osg::Real64 dWidth)
Protected Attributes
osg::Real64	m_dWidth

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Detailed Description

blackman filter

Definition at line 82 of file OSGImageScaler.h.

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Constructor & Destructor Documentation

ImageBlackmanFilter::ImageBlackmanFilter

(

osg::Real64

dWidth = osg ::Real64(0.5)

)

Definition at line 126 of file OSGImageScaler.cpp.

                                                       :
    ImageGenericFilter(dWidth)
{
}

ImageBlackmanFilter::~ImageBlackmanFilter

(

void

)

[virtual]

Definition at line 131 of file OSGImageScaler.cpp.

{
}

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Member Function Documentation

Real64 ImageBlackmanFilter::filter

(

osg::Real64

dVal

)

const [virtual]

Implements osg::ImageGenericFilter.

Definition at line 135 of file OSGImageScaler.cpp.

References osg::ImageGenericFilter::m_dWidth, OSG_FILTER_2PI, and OSG_FILTER_4PI.

{
    if (fabs (dVal) > m_dWidth)
        return 0.0;

    Real64 dN = 2.0 * m_dWidth + 1.0;
    return 0.42 + 0.5 * cos (OSG_FILTER_2PI * dVal / ( dN - 1.0 )) +
        0.08 * cos (OSG_FILTER_4PI * dVal / ( dN - 1.0 ));
}

Real64 ImageGenericFilter::getWidth

(

void

)

const [inherited]

Definition at line 41 of file OSGImageScaler.cpp.

References osg::ImageGenericFilter::m_dWidth.

Referenced by osg::ImageScaler::calcContributions().

{
    return m_dWidth;
}

void ImageGenericFilter::setWidth

(

osg::Real64

dWidth

)

[inherited]

Definition at line 46 of file OSGImageScaler.cpp.

References osg::ImageGenericFilter::m_dWidth.

{
    m_dWidth = dWidth;
}

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Member Data Documentation

osg ::Real64 osg::ImageGenericFilter::m_dWidth [protected, inherited]

Definition at line 29 of file OSGImageScaler.h.

Referenced by filter(), osg::ImageHammingFilter::filter(), osg::ImageGaussianFilter::filter(), osg::ImageLinearFilter::filter(), osg::ImageBoxFilter::filter(), osg::ImageGenericFilter::getWidth(), and osg::ImageGenericFilter::setWidth().

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

• OSGImageScaler.h
• OSGImageScaler.cpp