dtCore::SunlightShader Class Reference

A light scattering pixel shader for use with dtCore::Environment. More...

#include <sunlightshader.h>

List of all members.

Public Member Functions
	SunlightShader ()
	~SunlightShader ()
void	Update (const osg::Vec2 &sunDir, const osg::Vec3 &eyeXYZ, float turbidity, float energy, float molecules)
	Update the shader with new values.
osg::VertexProgram *	GetLightScatterinVP ()
osg::FragmentProgram *	GetTerrainFP ()

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Detailed Description

A light scattering pixel shader for use with dtCore::Environment.

This shader is built into the Environment and is used by setting the Environment::FogMode to ADV.

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Constructor & Destructor Documentation

dtCore::SunlightShader::SunlightShader

(

)

< Magic number

dtCore::SunlightShader::~SunlightShader

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Member Function Documentation

void dtCore::SunlightShader::Update	(	const osg::Vec2 &	sunDir,
		const osg::Vec3 &	eyeXYZ,
		float	turbidity,
		float	energy,
		float	molecules
	)

Update the shader with new values.

Parameters:

	sunDir	: The az/el of the sun in Degrees. sunDir[0] = az (0=north, 180=south) sunDir[1] = el (90=horizon, 0=zenith)
	eyeXYZ	: The Camera position (meters)
	turbidity	: The quality of the air (1.0 seems about right)
	energy	: The amount of energy passed to the atmosphere (10.0 is about right)
	molecules,:	The number of molecules per unit volume (0 = fully opaque, 2.545e25 looks about right)

osg::VertexProgram* dtCore::SunlightShader::GetLightScatterinVP

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[inline]

osg::FragmentProgram* dtCore::SunlightShader::GetTerrainFP

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)

[inline]

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