Mercator::AreaShader Class Reference

Shader for handling areas. More...

#include <AreaShader.h>

Inheritance diagram for Mercator::AreaShader:

Public Member Functions
	AreaShader (int layer)
	Constructor. More...
virtual void	shade (Surface &s) const
	Populate a Surface with data.
virtual bool	checkIntersect (const Segment &) const
	Check whether this Shader has any effect on the given Segment. More...
Public Member Functions inherited from Mercator::Shader
virtual	~Shader ()
	Destructor does nothing interesting.
bool	getColor () const
	Accessor for color flag.
bool	getAlpha () const
	Accessor for alpha flag.
Surface *	newSurface (const Segment &) const
	Create a new Surface which matches the requirements of this shader. More...

Private Member Functions
void	shadeArea (Surface &s, const Area *const ar) const
	helper to shader a single area into the surface

Private Attributes
int	m_layer
	The layer number.

Additional Inherited Members
Public Types inherited from Mercator::Shader
typedef std::map< std::string, float >	Parameters
	STL map of parameter values for a shader constructor.
Protected Member Functions inherited from Mercator::Shader
	Shader (bool color=false, bool alpha=true)
	Protected constructor for classes which inherit from this one. More...

Detailed Description

Shader for handling areas.

Constructor & Destructor Documentation

AreaShader()

Mercator::AreaShader::AreaShader

(

int

layer

)

Constructor.

Parameters

layer

layer number.

Member Function Documentation

checkIntersect()

bool Mercator::AreaShader::checkIntersect ( const Segment &  ) const

virtual

Check whether this Shader has any effect on the given Segment.

Returns

true if the given Segment height range is within the range that this Shader uses. e.g. A high altitude snow shader will have no effect on low level terrain.

Implements Mercator::Shader.

References Mercator::Segment::getAreas(), and m_layer.

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

• AreaShader.h
• AreaShader.cpp