TerrainTextureOverlay Class Reference

Base class for texture-based terrain overlays, with an arbitrary number of texels per terrain tile, intended for debugging purposes. More...

#include <TerrainOverlay.h>

Inheritance diagram for TerrainTextureOverlay:

Collaboration diagram for TerrainTextureOverlay:

Public Member Functions
	TerrainTextureOverlay (float texelsPerTile, int priority=100)
virtual	~TerrainTextureOverlay ()
Public Member Functions inherited from ITerrainOverlay
virtual	~ITerrainOverlay ()
virtual void	RenderBeforeWater ()

Protected Member Functions
virtual void	BuildTextureRGBA (u8 *data, size_t w, size_t h)=0
	Called each frame to generate the texture to render on the terrain. More...
SColor4ub	GetColor (size_t idx, u8 alpha) const
	Returns an arbitrary color, for subclasses that want to distinguish different integers visually. More...
Protected Member Functions inherited from ITerrainOverlay
	ITerrainOverlay (int priority)

Private Member Functions
void	RenderAfterWater (int cullGroup)

Private Attributes
float	m_TexelsPerTile
GLuint	m_Texture
GLsizei	m_TextureW
GLsizei	m_TextureH

Additional Inherited Members
Static Public Member Functions inherited from ITerrainOverlay
static void	RenderOverlaysBeforeWater ()
	Draw all ITerrainOverlay objects that exist and that should be drawn before water. More...
static void	RenderOverlaysAfterWater (int cullGroup)
	Draw all ITerrainOverlay objects that exist and that should be drawn after water. More...

Detailed Description

Base class for texture-based terrain overlays, with an arbitrary number of texels per terrain tile, intended for debugging purposes.

Subclasses must implement BuildTextureRGBA which will be called each frame.

Constructor & Destructor Documentation

TerrainTextureOverlay::TerrainTextureOverlay	(	float	texelsPerTile,
		int	priority = 100
	)

TerrainTextureOverlay::~TerrainTextureOverlay ( )

virtual

Member Function Documentation

virtual void TerrainTextureOverlay::BuildTextureRGBA ( u8 *  data, size_t  w, size_t  h  )

protectedpure virtual

Called each frame to generate the texture to render on the terrain.

data is w*h*4 bytes, where w and h are the terrain size multiplied by texelsPerTile. data defaults to fully transparent, and should be filled with data in RGBA order.

Implemented in LongOverlay, AtlasOverlay, HierarchicalOverlay, and TerritoryOverlay.

SColor4ub TerrainTextureOverlay::GetColor ( size_t  idx, u8  alpha  ) const

protected

Returns an arbitrary color, for subclasses that want to distinguish different integers visually.

void TerrainTextureOverlay::RenderAfterWater ( int  cullGroup )

privatevirtual

Reimplemented from ITerrainOverlay.

Member Data Documentation

float TerrainTextureOverlay::m_TexelsPerTile

private

GLuint TerrainTextureOverlay::m_Texture

private

GLsizei TerrainTextureOverlay::m_TextureH

private

GLsizei TerrainTextureOverlay::m_TextureW

private

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

• /var/svn/checkout/source/renderer/TerrainOverlay.h
• /var/svn/checkout/source/renderer/TerrainOverlay.cpp