ColorMap Class Reference

Public Member Functions
bool	Save (const char *fname) const
bool	Load (const char *fname)
void	Add (float elev, const RGBi &color)
float	Elev (int index) const
const RGBi &	Color (int index) const
void	SetColor (int index, const RGBi &rgb)
void	RemoveAt (int num)
void	Clear ()
int	Num () const
void	GenerateColorTable (int iTableSize, float fMin, float fMax)
const RGBi &	ColorFromTable (float fElev) const

Public Attributes
std::vector< RGBi >	m_table
float	m_fMin
float	m_fMax
float	m_fRange
int	m_iTableSize
bool	m_bBlend
bool	m_bRelative

Protected Attributes
std::vector< float >	m_elev
std::vector< RGBi >	m_color

Detailed Description

This small class describes how to map elevation (as from a heightfield) onto a set of colors.

Member Function Documentation

void ColorMap::Add	(	float	elev,
		const RGBi &	color
	)

Add a color entry, keeping the elevation values sorted.

void ColorMap::GenerateColorTable	(	int	iTableSize,
		float	fMin,
		float	fMax
	)

Tell this ColorMap to generate an internal table of interpolated colors. This sets it up to use ColorFromTable().

Parameters

iTableSize	The desired number of elements in the table.
fMin,fMax	The elevation range to interpolate over.