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Rogue Wave Views 5.5.1

Rogue Wave Views
Maps Package API Reference Guide

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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:
IlvFeatureRenderer

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 IlvFeatureRenderercopy () const
 Copies the object.
IlvGraphicmakeGraphic (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.

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


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.

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.


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