IlvIntervalColorModel Class Reference

This class implements a color model that performs a linear interpolation to compute the pixel colors with intervals specified by the user. More...

#include <ilviews/maps/rendering/cmodel.h>

Inheritance diagram for IlvIntervalColorModel:

Public Member Functions
	IlvIntervalColorModel (const IlUChar *redMap, const IlUChar *greenMap, const IlUChar *blueMap, IlUInt colorCount, const IlInt *limits, IlUInt limitCount)
	Creates an instance of IlvIntervalColorModel. More...
	IlvIntervalColorModel (const IlvIntervalColorModel &model)
	Creates a new instance of IlvIntervalColorModel by copying the specified color model. More...
virtual IlvMapColorModel *	copy () const
	Returns a copy of the object. More...
virtual IlUChar	getAlpha (IlInt pixel) const
	Returns the Alpha component for the specified pixel value. More...
virtual IlUChar	getBlue (IlInt pixel) const
	Returns the Blue component for the specified pixel value. More...
IlUInt	getColors (IlUChar *&redmap, IlUChar *&greenmap, IlUChar *&bluemap) const
	Returns the color array. More...
virtual IlUChar	getGreen (IlInt pixel) const
	Returns the Green component for the specified pixel value. More...
IlUInt	getLimits (IlInt *&limits) const
	Returns the limit array. More...
virtual IlUChar	getRed (IlInt pixel) const
	Returns the Red component for the specified pixel value. More...
IlBoolean	isPersistent () const
	Returns IlTrue if this color model is persistent. More...
Public Member Functions inherited from IlvMapColorModel
virtual void	getRGBA (IlInt pixel, IlUChar &red, IlUChar &green, IlUChar &blue, IlUChar &alpha) const
	Returns the RGBA component for this pixel value. More...
void	save (IlvOutputFile &file) const
	Saves the object to an IlvOutputFile. More...
virtual void	write (IlvOutputFile &file) const =0
	Writes the color model to an IlvOutputFile. More...

Static Public Member Functions
static IlvIntervalColorModel *	MakeElevationColorModel ()
	Returns a predefined interval color model with values adapted to renderer elevation rasters. More...

Additional Inherited Members
Protected Member Functions inherited from IlvMapColorModel
	IlvMapColorModel ()
	Creates an instance of the color model. More...

Detailed Description

This class implements a color model that performs a linear interpolation to compute the pixel colors with intervals specified by the user.

This color model can be used to create images from an IlvMapRaster.

See also

IlvDefaultRasterRenderer Library: ilvmaps

Constructor & Destructor Documentation

IlvIntervalColorModel::IlvIntervalColorModel	(	const IlUChar *	redMap,
		const IlUChar *	greenMap,
		const IlUChar *	blueMap,
		IlUInt	colorCount,
		const IlInt *	limits,
		IlUInt	limitCount
	)

Creates an instance of IlvIntervalColorModel.

Parameters

redMap	The value of chars indicating the red component of the colors for the interval limits. The value can be between 0 and 255. The first value of the array is for MinInt and the last value is for MaxInt. Intermediate limits are specified in the limits array.
greenMap	The value of chars indicating the green component of the colors for the interval limits. The value can be between 0 and 255. The first value of the array is for MinInt and the last value is for MaxInt. Intermediate limits are specified in the limits array.
blueMap	The value of chars indicating the blue component of the colors for the interval limits. The value can be between 0 and 255. The first value of the array is for MinInt and the last value is for MaxInt. Intermediate limits are specified in the limits array.
colorCount	The size of the arrays redMap, greenMap and blueMap.
limits	The values of the interval limits.
limitCount	The size of the array limits.

Note

The number of limits must be colorCount - 2.

IlvIntervalColorModel::IlvIntervalColorModel

(

const IlvIntervalColorModel &

model

)

Creates a new instance of IlvIntervalColorModel by copying the specified color model.

Parameters

model

The model to be copied.

Member Function Documentation

virtual IlvMapColorModel* IlvIntervalColorModel::copy ( ) const

virtual

Returns a copy of the object.

Returns

The copy of the object.

Implements IlvMapColorModel.

virtual IlUChar IlvIntervalColorModel::getAlpha ( IlInt  pixel ) const

virtual

Returns the Alpha component for the specified pixel value.

Parameters

pixel

The pixel value.

Returns

The Alpha component for the specified pixel value.

Implements IlvMapColorModel.

virtual IlUChar IlvIntervalColorModel::getBlue ( IlInt  pixel ) const

virtual

Returns the Blue component for the specified pixel value.

Parameters

pixel

The pixel value.

Returns

The Blue component for the specified pixel value.

Implements IlvMapColorModel.

IlUInt IlvIntervalColorModel::getColors	(	IlUChar *&	redmap,
		IlUChar *&	greenmap,
		IlUChar *&	bluemap
	)		const

Returns the color array.

Parameters

redmap	Returns a pointer to the internal array of red map.
greenmap	Returns a pointer to the internal array of green map.
bluemap	Returns a pointer to the internal array of blue map.

Returns

The number of colors.

virtual IlUChar IlvIntervalColorModel::getGreen ( IlInt  pixel ) const

virtual

Returns the Green component for the specified pixel value.

Parameters

pixel

The pixel value.

Returns

The Green component for the specified pixel value.

Implements IlvMapColorModel.

IlUInt IlvIntervalColorModel::getLimits

(

IlInt *&

limits

)

const

Returns the limit array.

Parameters

limits

Returns a pointer to the internal array of limits.

Returns

The number of limits.

virtual IlUChar IlvIntervalColorModel::getRed ( IlInt  pixel ) const

virtual

Returns the Red component for the specified pixel value.

Parameters

pixel

The pixel value.

Returns

The Red component for the specified pixel value.

Implements IlvMapColorModel.

IlBoolean IlvIntervalColorModel::isPersistent ( ) const

virtual

Returns IlTrue if this color model is persistent.

Returns

IlTrue.

Reimplemented from IlvMapColorModel.

static IlvIntervalColorModel* IlvIntervalColorModel::MakeElevationColorModel ( )

static

Returns a predefined interval color model with values adapted to renderer elevation rasters.

Returns

An IlvIntervalColorModel object that must be deleted by the user.