anonymous_namespace{ImageUtils.cpp}::MixImage Struct Reference

List of all members.

Public Member Functions
bool	operator() (const osg::Vec4f &src, osg::Vec4f &dest)
Public Attributes
float	_a
bool	_srcHasAlpha
bool	_destHasAlpha

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Detailed Description

Definition at line 246 of file ImageUtils.cpp.

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Member Function Documentation

bool anonymous_namespace{ImageUtils.cpp}::MixImage::operator()	(	const osg::Vec4f &	src,
		osg::Vec4f &	dest
	)		[inline]

Definition at line 251 of file ImageUtils.cpp.

        {
            float sa = _srcHasAlpha ? _a * src.a() : _a;
            float da = _destHasAlpha ? dest.a() : 1.0f;
            dest.set(
                dest.r()*(1.0f-sa) + src.r()*sa,
                dest.g()*(1.0f-sa) + src.g()*sa,
                dest.b()*(1.0f-sa) + src.b()*sa,
                osg::maximum(sa, da) );             
            return true;
        }

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Member Data Documentation

float anonymous_namespace{ImageUtils.cpp}::MixImage::_a

Definition at line 248 of file ImageUtils.cpp.

bool anonymous_namespace{ImageUtils.cpp}::MixImage::_destHasAlpha

Definition at line 249 of file ImageUtils.cpp.

bool anonymous_namespace{ImageUtils.cpp}::MixImage::_srcHasAlpha

Definition at line 249 of file ImageUtils.cpp.

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

• /home/cube/sources/osgearth/src/osgEarth/ImageUtils.cpp