Mercator::TileShader Class Reference

Shader agregating surface data. More...

#include <TileShader.h>

Inheritance diagram for Mercator::TileShader:

List of all members.

Public Types
typedef std::map< int, Shader * >	Shaderstore
	STL map to store sparse array of Shader pointers.
Public Member Functions
void	addShader (Shader *t, int id)
	Add a shader to those agregated by the tile shader.
virtual bool	checkIntersect (const Segment &) const
	Check whether this Shader has any effect on the given Segment.
virtual void	shade (Surface &) const
	Populate a Surface with data.
Private Attributes
Shaderstore	m_subShaders
	Store of shaders which are agregated by this shader.

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Detailed Description

Shader agregating surface data.

Some applications require the terrain surface data be stored in a single buffer so specific locations can be queried to determine the type. Typically this is used on a server, where lots of surface data optimised for rendering is not required, but fast cheap queries about the surface at a specific point are required.

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Member Function Documentation

bool Mercator::TileShader::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.

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

• TileShader.h
• TileShader.cpp