Map Tools

The map tools module provides some basic abstractions for handling spatial data in the form of a map. More...

Files
file	Utils.h
	Utility functions for MapTools module.

Classes
class	te::map::AbstractLayer
	This is the base class for layers. More...
class	te::map::AbstractLayerRenderer
	It renders the objects associated to an abstract layer. i.e. a generic renderer. More...
class	te::map::AbstractLayerRendererFactory
	This is the concrete factory for renderers of a AbstractLayer. i.e. builds a generic renderer. More...
class	te::map::AbstractMapDisplay
	It defines the concept of a map display responsible for controlling how a set of layers are displayed. More...
class	te::map::AbstractRenderer
	It renders the objects associated to a layer. More...
class	te::map::Canvas
	A canvas is an abstraction of a drawing area. More...
class	te::map::CanvasConfigurer
	A Symbology Enconding visitor that configures a given canvas based on symbolizers elements. If you want to use this visitor, use a command like: te::map::CanvasConfigurer cc(canvas); cc.config(symbolizer); More...
class	te::map::Chart
	This class represents the informations needed to build map charts. More...
class	te::map::DataSetLayer
	A layer with reference to a dataset. More...
class	te::map::FolderLayer
	A layer that can be used as a container for other kind of layers. More...
class	te::map::Grouping
	This class contains the parameters needed for grouping the values of a Property. More...
class	te::map::MapDisplay
	This class controls how a set of layers are displayed. More...
class	te::map::QueryLayer
	A layer resulting from a query. More...
class	te::map::RasterContrast
	This class contains the parameters needed to apply dynamic contrast over a raster. More...
class	te::map::RasterLayer
	A layer with reference to a raster. More...
class	te::map::RendererFactory
	This is the abstract factory for layer renderers. More...
class	te::map::WorldDeviceTransformer
	This class implements the logic for transforming from device coordinate to world coordinate and vice-versa. More...

Detailed Description

The map tools module provides some basic abstractions for handling spatial data in the form of a map.

The TerraLib Map Tools module provides a basic set of tools for dealing with maps. You can extend this basic framework in order to have your own way of rendering and representing the concept of a map.

In this module you will find some useful concepts like:

• Canvas: an abstraction of a drawing area;
• Layer: a base class designed to support applications that handle information as layers. A layer is just a reference to the data (not the data itself) and can be used to logically organize it. The information about a layer can be stored in different medias (a XML file or a DBMS table) depending on the type of persistence choosed;
• Renderer: a set of classes for rendering layers, geographical objects and other stuffs;
• MapDisplay: a helper class to control the display of a set of layers;
• etc.

The main classes/concepts in this module are listed here. The namespace associated to the Map Tools module is te::map. To know more about it, see the te::map namespace documentation.