Package org.geotools.api.style

Interface LineSymbolizer

All Superinterfaces:

Symbolizer

All Known Implementing Classes:

LineSymbolizerImpl

public interface LineSymbolizer
extends Symbolizer

Gives directions for how to draw lines on a map.

Since:

GeoAPI 2.2

Author:

Open Geospatial Consortium, Johann Sorel (Geomatys), Chris Dillard (SYS Technologies)

Method Summary

Modifier and Type	Method	Description
Object	accept(TraversingStyleVisitor visitor, Object extraData)	Calls the visit method of a StyleVisitor
Expression	getPerpendicularOffset()	PerpendicularOffset allows to draw lines in parallel to the original geometry.
Stroke	getStroke()	Returns the object containing all the information necessary to draw styled lines.
void	setPerpendicularOffset(Expression offset)	Define an offset to draw lines in parallel to the original geometry.
void	setStroke(Stroke stroke)	Provides the graphical-symbolization parameter to use for the linear geometry.

Methods inherited from interface Symbolizer

accept, getDescription, getGeometry, getGeometryPropertyName, getName, getOptions, getUnitOfMeasure, hasOption, setDescription, setGeometry, setGeometryPropertyName, setName, setUnitOfMeasure

Method Detail

getStroke

Stroke getStroke()

Returns the object containing all the information necessary to draw styled lines.

Returns:

Stroke object, contain information about how to draw lines

getPerpendicularOffset

Expression getPerpendicularOffset()

PerpendicularOffset allows to draw lines in parallel to the original geometry. For complex line strings these parallel lines have to be constructed so that the distance between original geometry and drawn line stays equal. This construction can result in drawn lines that are actually smaller or longer than the original geometry.

The distance is in uoms and is positive to the left-hand side of the line string. Negative numbers mean right. The default offset is 0.

Returns:

Expression

accept

Object accept(TraversingStyleVisitor visitor,
              Object extraData)

Calls the visit method of a StyleVisitor

Specified by:

accept in interface Symbolizer

Parameters:

visitor - the style visitor

Returns:

value produced

setStroke

void setStroke(Stroke stroke)

Provides the graphical-symbolization parameter to use for the linear geometry.

Parameters:

stroke - The Stroke style to use when rendering lines.

setPerpendicularOffset

void setPerpendicularOffset(Expression offset)

Define an offset to draw lines in parallel to the original geometry.

Parameters:

offset - Distance in UOMs to offset line; left-hand side is positive; right-hand side is negative; the default value is 0