Package org.tinfour.voronoi

Class BoundedVoronoiStylerAdapter

java.lang.Object

org.tinfour.voronoi.BoundedVoronoiStylerAdapter

All Implemented Interfaces:

IBoundedVoronoiStyler

public class BoundedVoronoiStylerAdapter
extends Object
implements IBoundedVoronoiStyler

A base implementation of the styler interface provided as a convenience.

Constructor Summary

Constructors

Constructor	Description
BoundedVoronoiStylerAdapter()	Constructs an instance that implements default behavior.

Method Summary

Modifier and Type	Method	Description
void	applyStylingForAreaFill(Graphics2D g2d, ThiessenPolygon polygon)	Applies styling for area fill operations.
void	applyStylingForLineDrawing(Graphics2D g2d, ThiessenPolygon polygon)	Applies styling for line drawing operations.
IBoundedVoronoiVertexSymbol	getVertexSymbol(ThiessenPolygon polygon)	Tests to see if the polygon is enabled for rendering a symbol at the vertex position and, if it is, returns a vertex symbol that can be used for rendering
void	initializeRendering(Graphics2D g2d)	Called once at the beginning of rendering to set up the Graphics2D surface for rendering.
boolean	isFeatureTypeEnabled(BoundedVoronoiRenderingType type)	Indicates whether features of the specified type are enabled for rendering.
boolean	isRenderingEnabled(ThiessenPolygon polygon, BoundedVoronoiRenderingType type)	Indicates whether the specified type of rendering is enabled for the specified polygon object.
void	setAreaFillEnabled(boolean enabled)	Sets the option for enabling area fill operations

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BoundedVoronoiStylerAdapter

public BoundedVoronoiStylerAdapter()

Constructs an instance that implements default behavior.

Method Detail

isFeatureTypeEnabled

public boolean isFeatureTypeEnabled(BoundedVoronoiRenderingType type)

Description copied from interface: IBoundedVoronoiStyler

Indicates whether features of the specified type are enabled for rendering.

This method is useful in cases where an application is required to control whether broad classes of feature types are rendered. For example, an application might be configured to draw line features, while suppressing area-fill features.

Specified by:

isFeatureTypeEnabled in interface IBoundedVoronoiStyler

Parameters:

type - a valid instance of a feature type enumeration

Returns:

true if the type is enabled for rendering; otherwise, false.

isRenderingEnabled

public boolean isRenderingEnabled(ThiessenPolygon polygon,
                                  BoundedVoronoiRenderingType type)

Description copied from interface: IBoundedVoronoiStyler

Indicates whether the specified type of rendering is enabled for the specified polygon object.

This method is useful in cases where rendering of one type to be enabled for a specific polygon while rendering of another type is not. For example, an application may be configured to draw line features for most polygons while area-filling a specific polygon.

Specified by:

isRenderingEnabled in interface IBoundedVoronoiStyler

Parameters:

polygon - a valid polygon

type - a valid instance of a feature type enumeration

Returns:

true if the polygon is enabled for the specified rendering type; otherwise, false.

initializeRendering

public void initializeRendering(Graphics2D g2d)

Description copied from interface: IBoundedVoronoiStyler

Called once at the beginning of rendering to set up the Graphics2D surface for rendering. One common use of this routine is to ensure that anti-aliasing is activated, though other settings may also be applied.

Specified by:

initializeRendering in interface IBoundedVoronoiStyler

Parameters:

g2d - the graphics surface for rendering

applyStylingForAreaFill

public void applyStylingForAreaFill(Graphics2D g2d,
                                    ThiessenPolygon polygon)

Description copied from interface: IBoundedVoronoiStyler

Applies styling for area fill operations. Styling may include setting a Java Color or Paint, a Composite, clipping, etc.

Specified by:

applyStylingForAreaFill in interface IBoundedVoronoiStyler

Parameters:

g2d - the graphics surface for rendering

polygon - a valid polygon instance

applyStylingForLineDrawing

public void applyStylingForLineDrawing(Graphics2D g2d,
                                       ThiessenPolygon polygon)

Description copied from interface: IBoundedVoronoiStyler

Applies styling for line drawing operations. Styling may include setting a Java Color or Paint, a Stroke, a Composite, clipping, etc.

Specified by:

applyStylingForLineDrawing in interface IBoundedVoronoiStyler

Parameters:

g2d - the graphics surface for rendering

polygon - a valid polygon instance

getVertexSymbol

public IBoundedVoronoiVertexSymbol getVertexSymbol(ThiessenPolygon polygon)

Description copied from interface: IBoundedVoronoiStyler

Tests to see if the polygon is enabled for rendering a symbol at the vertex position and, if it is, returns a vertex symbol that can be used for rendering

Specified by:

getVertexSymbol in interface IBoundedVoronoiStyler

Parameters:

polygon - a valid polygon

Returns:

if rendering is enabled, a valid symbol instance; otherwise, a null.

setAreaFillEnabled

public void setAreaFillEnabled(boolean enabled)

Description copied from interface: IBoundedVoronoiStyler

Sets the option for enabling area fill operations

Specified by:

setAreaFillEnabled in interface IBoundedVoronoiStyler

Parameters:

enabled - true if the Theissen polygons (Voronoi cells) are to be area-filled; otherwise, false.