org.deegree_impl.graphics.displayelements
Class LineStringDisplayElement_Impl

java.lang.Object
  org.deegree_impl.graphics.displayelements.DisplayElement_Impl
      org.deegree_impl.graphics.displayelements.GeometryDisplayElement_Impl
          org.deegree_impl.graphics.displayelements.LineStringDisplayElement_Impl

All Implemented Interfaces:

DisplayElement, GeometryDisplayElement, LineStringDisplayElement, java.io.Serializable

class LineStringDisplayElement_Impl

extends GeometryDisplayElement_Impl

implements LineStringDisplayElement, java.io.Serializable

DisplayElement that encapsulates a linestring (GM_Curve) or multi-linestring geometry (GM_MultiCurve) and a LineStringSymbolizer.

It can be rendered using a solid stroke or a graphics stroke.

Version:

$Revision: 1.20 $ $Date: 2004/05/11 13:10:46 $

Author:

Andreas Poth, Markus Schneider

Field Summary

protected Feature	feature
protected GM_Object	geometry
protected Symbolizer	highlightSymbolizer
protected java.lang.Object	placement
protected Symbolizer	selectedSymbolizer
private static long	serialVersionUID Use serialVersionUID for interoperability.
protected Symbolizer	symbolizer

Constructor Summary

protected	LineStringDisplayElement_Impl(Feature feature, GM_Curve geometry) Creates a new LineStringDisplayElement_Impl object.
protected	LineStringDisplayElement_Impl(Feature feature, GM_Curve geometry, LineSymbolizer symbolizer) Creates a new LineStringDisplayElement_Impl object.
protected	LineStringDisplayElement_Impl(Feature feature, GM_MultiCurve geometry) Creates a new LineStringDisplayElement_Impl object.
protected	LineStringDisplayElement_Impl(Feature feature, GM_MultiCurve geometry, LineSymbolizer symbolizer) Creates a new LineStringDisplayElement_Impl object.

Method Summary

private int[][]	calcTargetCoordinates(GeoTransform projection, GM_Curve curve) Calculates the screen coordinates of the curve.
private double	distance(double x1, double y1, double x2, double y2)
boolean	doesScaleConstraintApply(double scale) Returns if the DisplayElement should be painted at the current scale or not.
private void	drawLine(java.awt.Graphics g, int[][] pos, Stroke stroke) Renders a curve to the submitted graphic context.
java.lang.String	getAssociateFeatureId() returns the id of the feature that's associated with the DisplayElement
double	getDistance(double x1, double y1, double x2, double y2)
Feature	getFeature() Returns the associated Feature.
GM_Object	getGeometry() returns the geometry that determines the position the DisplayElement will be rendered to
Symbolizer	getHighlightSymbolizer() returns the symbolizer that determines how the geometry will be rendered if it's highlighted
Symbolizer	getSelectedSymbolizer() returns the symbolizer that determines how the geometry will be rendered if it's selected
Symbolizer	getSymbolizer() Returns the symbolizer that determines how the geometry will be rendered.
boolean	isHighlighted() returns if the DisplayElement is highlighted or not.
boolean	isSelected() returns if the DisplayElement is selected or not
void	paint(java.awt.Graphics g, GeoTransform projection) renders the DisplayElement to the submitted graphic context
void	paintImage(java.awt.Image image, java.awt.Graphics2D g, int x, int y, double rotation)
private java.awt.Graphics2D	setColor(java.awt.Graphics2D g2, java.awt.Color color, double opacity)
void	setGeometry(GM_Object geometry) sets the geometry that determines the position the DisplayElement will be rendered to
void	setHighlighted(boolean highlighted) marks the DisplayElement as highlighted or not
void	setHighlightSymbolizer(Symbolizer rule) sets the rule that determines how the geometry will be rendered when it's highlighted
void	setPlacement(java.lang.Object o) Overwrites the default placement of the DisplayElement.
void	setSelected(boolean selected) marks a DisplayElement as selected or not
void	setSelectedSymbolizer(Symbolizer rule) sets the rule that determines how the geometry will be rendered when it's selected
void	setSymbolizer(Symbolizer symbolizer) sets the rules that determines how the geometry will be rendered

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.graphics.displayelements.GeometryDisplayElement

getGeometry, getHighlightSymbolizer, getSelectedSymbolizer, getSymbolizer, setGeometry, setHighlightSymbolizer, setPlacement, setSelectedSymbolizer, setSymbolizer

Methods inherited from interface org.deegree.graphics.displayelements.DisplayElement

doesScaleConstraintApply, getAssociateFeatureId, getFeature, isHighlighted, isSelected, setHighlighted, setSelected

Field Detail

serialVersionUID

private static final long serialVersionUID

Use serialVersionUID for interoperability.

See Also:

Constant Field Values

geometry

protected GM_Object geometry

symbolizer

protected Symbolizer symbolizer

highlightSymbolizer

protected Symbolizer highlightSymbolizer

selectedSymbolizer

protected Symbolizer selectedSymbolizer

placement

protected java.lang.Object placement

feature

protected Feature feature

Constructor Detail

LineStringDisplayElement_Impl

protected LineStringDisplayElement_Impl(Feature feature,
                                        GM_Curve geometry)

Creates a new LineStringDisplayElement_Impl object.

Parameters:

feature -

geometry -

LineStringDisplayElement_Impl

protected LineStringDisplayElement_Impl(Feature feature,
                                        GM_Curve geometry,
                                        LineSymbolizer symbolizer)

Creates a new LineStringDisplayElement_Impl object.

Parameters:

feature -

geometry -

symbolizer -

LineStringDisplayElement_Impl

protected LineStringDisplayElement_Impl(Feature feature,
                                        GM_MultiCurve geometry)

Creates a new LineStringDisplayElement_Impl object.

Parameters:

feature -

geometry -

LineStringDisplayElement_Impl

protected LineStringDisplayElement_Impl(Feature feature,
                                        GM_MultiCurve geometry,
                                        LineSymbolizer symbolizer)

Creates a new LineStringDisplayElement_Impl object.

Parameters:

feature -

geometry -

symbolizer -

Method Detail

paintImage

public void paintImage(java.awt.Image image,
                       java.awt.Graphics2D g,
                       int x,
                       int y,
                       double rotation)

paint

public void paint(java.awt.Graphics g,
                  GeoTransform projection)

renders the DisplayElement to the submitted graphic context

Specified by:

paint in interface DisplayElement

Specified by:

paint in class DisplayElement_Impl

getDistance

public double getDistance(double x1,
                          double y1,
                          double x2,
                          double y2)

calcTargetCoordinates

private int[][] calcTargetCoordinates(GeoTransform projection,
                                      GM_Curve curve)
                               throws java.lang.Exception

Calculates the screen coordinates of the curve.

Throws:

java.lang.Exception

drawLine

private void drawLine(java.awt.Graphics g,
                      int[][] pos,
                      Stroke stroke)
               throws FilterEvaluationException

Renders a curve to the submitted graphic context. TODO: Calculate miterlimit.

Throws:

FilterEvaluationException

distance

private double distance(double x1,
                        double y1,
                        double x2,
                        double y2)

setColor

private java.awt.Graphics2D setColor(java.awt.Graphics2D g2,
                                     java.awt.Color color,
                                     double opacity)

Parameters:

g2 -

color -

opacity -

Returns:

setPlacement

public void setPlacement(java.lang.Object o)

Overwrites the default placement of the DisplayElement. This method is used by the PlacementOptimizer to minimize the overlapping of labels, for example.

Specified by:

setPlacement in interface GeometryDisplayElement

Parameters:

o - the placement to be used

setGeometry

public void setGeometry(GM_Object geometry)

sets the geometry that determines the position the DisplayElement will be rendered to

Specified by:

setGeometry in interface GeometryDisplayElement

getGeometry

public GM_Object getGeometry()

returns the geometry that determines the position the DisplayElement will be rendered to

Specified by:

getGeometry in interface GeometryDisplayElement

setSymbolizer

public void setSymbolizer(Symbolizer symbolizer)

sets the rules that determines how the geometry will be rendered

Specified by:

setSymbolizer in interface GeometryDisplayElement

Parameters:

symbolizer - symbolizer defining rendering style

getSymbolizer

public Symbolizer getSymbolizer()

Returns the symbolizer that determines how the geometry will be rendered.

Specified by:

getSymbolizer in interface GeometryDisplayElement

setHighlightSymbolizer

public void setHighlightSymbolizer(Symbolizer rule)

sets the rule that determines how the geometry will be rendered when it's highlighted

Specified by:

setHighlightSymbolizer in interface GeometryDisplayElement

Parameters:

rule - symbolizer defining rendering style

getHighlightSymbolizer

public Symbolizer getHighlightSymbolizer()

returns the symbolizer that determines how the geometry will be rendered if it's highlighted

Specified by:

getHighlightSymbolizer in interface GeometryDisplayElement

setSelectedSymbolizer

public void setSelectedSymbolizer(Symbolizer rule)

sets the rule that determines how the geometry will be rendered when it's selected

Specified by:

setSelectedSymbolizer in interface GeometryDisplayElement

Parameters:

rule - symbolizer defining rendering style

getSelectedSymbolizer

public Symbolizer getSelectedSymbolizer()

returns the symbolizer that determines how the geometry will be rendered if it's selected

Specified by:

getSelectedSymbolizer in interface GeometryDisplayElement

doesScaleConstraintApply

public boolean doesScaleConstraintApply(double scale)

Returns if the DisplayElement should be painted at the current scale or not.

Specified by:

doesScaleConstraintApply in interface DisplayElement

Overrides:

doesScaleConstraintApply in class DisplayElement_Impl

getFeature

public Feature getFeature()

Returns the associated Feature.

Specified by:

getFeature in interface DisplayElement

getAssociateFeatureId

public java.lang.String getAssociateFeatureId()

returns the id of the feature that's associated with the DisplayElement

Specified by:

getAssociateFeatureId in interface DisplayElement

setSelected

public void setSelected(boolean selected)

marks a DisplayElement as selected or not

Specified by:

setSelected in interface DisplayElement

isSelected

public boolean isSelected()

returns if the DisplayElement is selected or not

Specified by:

isSelected in interface DisplayElement

setHighlighted

public void setHighlighted(boolean highlighted)

marks the DisplayElement as highlighted or not

Specified by:

setHighlighted in interface DisplayElement

isHighlighted

public boolean isHighlighted()

returns if the DisplayElement is highlighted or not.

Specified by:

isHighlighted in interface DisplayElement