IlvDefaultRasterRenderer Class Reference

This renderer translates a map feature whose geometry is an IlvMapRaster into an IlvZoomableIcon whose colors indicate the value of the raster. More...

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

Inheritance diagram for IlvDefaultRasterRenderer:

List of all members.

Public Member Functions
	IlvDefaultRasterRenderer (const IlvDefaultRasterRenderer &source)
	Creates a new renderer, copying the specified renderer.
	IlvDefaultRasterRenderer (IlvDisplay *display, IlvMapColorModel *colorModel, IlBoolean ownerOfModel)
	Creates an instance of a renderer to render raster geometries.
virtual IlvFeatureRenderer *	copy () const
	Copies the object.
IlvGraphic *	makeGraphic (const IlvMapFeature &feature, const IlvMapInfo &targetMapInfo, IlvMapsError &status) const
	Translates an IlvMapFeature into a graphic object.
virtual void	write (IlvOutputFile &) const
	Writes the renderer to an IlvOutputStream.
Static Public Member Functions
static IlvMapsError	BitmapError ()
	The error returned when bitmaps cannot be created.

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Detailed Description

This renderer translates a map feature whose geometry is an IlvMapRaster into an IlvZoomableIcon whose colors indicate the value of the raster.

The translation from raster values to colors is performed by an IlvMapColorModel. Library: ilvmaps

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Constructor & Destructor Documentation

IlvDefaultRasterRenderer::IlvDefaultRasterRenderer	(	IlvDisplay *	display,
		IlvMapColorModel *	colorModel,
		IlBoolean	ownerOfModel
	)

Creates an instance of a renderer to render raster geometries.

Parameters:

	display	The display for which graphics are rendered.
	colorModel	The colormodel used to translate raster values into colors.
	ownerOfModel	If IlTrue, the new owner of the colormodel is the renderer. The IlvDefaultRasterRenderer instance will delete the colorModel in its destructor.

IlvDefaultRasterRenderer::IlvDefaultRasterRenderer

(

const IlvDefaultRasterRenderer &

source

)

Creates a new renderer, copying the specified renderer.

Parameters:

source

The object to be copied.

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Member Function Documentation

static IlvMapsError IlvDefaultRasterRenderer::BitmapError

(

)

[static]

The error returned when bitmaps cannot be created.

Returns:

The error returned when bitmaps cannot be created.

virtual IlvFeatureRenderer* IlvDefaultRasterRenderer::copy

(

)

const [virtual]

Copies the object.

Returns:

A copy of this IlvFeatureRenderer.

Implements IlvFeatureRenderer.

IlvGraphic* IlvDefaultRasterRenderer::makeGraphic	(	const IlvMapFeature &	feature,
		const IlvMapInfo &	targetMapInfo,
		IlvMapsError &	status
	)			const [virtual]

Translates an IlvMapFeature into a graphic object.

Warning:

This renderer handles projection conversion.

Parameters:

	feature	The map feature to be translated.
	targetMapInfo	The target map info.
	status	Set to an error code if the renderer cannot process the map feature (often because the renderer does not support the feature geometry, but it can also indicate that a projection error occurred).

Returns:

The IlvGraphic object or a null pointer if a severe error occurred.

Implements IlvFeatureRenderer.

virtual void IlvDefaultRasterRenderer::write

(

IlvOutputFile &

file

)

const [virtual]

Writes the renderer to an IlvOutputStream.

This function must be reimplemented by the subclasses of IlvFeatureRenderer, but it should not be called directly by the application. For more information about subclassing an IlvFeatureRenderer, refer to the User Manual of Rogue Wave Views Maps.

Parameters:

file

The output file.

See also:

save

Implements IlvFeatureRenderer.