Package org.gvsig.symbology.fmap.mapcontext.rendering.symbol.impl

Class AbstractCartographicSupport

java.lang.Object

org.gvsig.symbology.fmap.mapcontext.rendering.symbol.impl.AbstractCartographicSupport

All Implemented Interfaces:

CartographicSupport

Direct Known Subclasses:

AbstractSymbol

public abstract class AbstractCartographicSupport
extends Object
implements CartographicSupport

Author:

fdiaz

Nested Class Summary

Nested classes/interfaces inherited from interface org.gvsig.fmap.mapcontext.rendering.symbols.CartographicSupport

CartographicSupport.CartographicContext

Field Summary

Fields inherited from interface org.gvsig.fmap.mapcontext.rendering.symbols.CartographicSupport

PAPER, WORLD

Constructor Summary

Constructors

Constructor	Description
AbstractCartographicSupport()

Method Summary

Modifier and Type	Method	Description
void	copyCartographicContext(CartographicSupport element)
CartographicSupport.CartographicContext	getCartographicContext()
int	getReferenceSystem()	Returns the Reference System used to draw the elements of the image.
int	getUnit()	Returns the unit used to express measures.
boolean	isInPixels()
void	setCartographicContext(double dpi)
void	setCartographicContext(org.gvsig.compat.print.PrintAttributes properties)
void	setCartographicContext(CartographicSupport.CartographicContext ctx)
void	setCartographicContext(ViewPort viewPort, double dpi, org.gvsig.fmap.geom.Geometry geom)
void	setCartographicContext(ViewPort viewPort, org.gvsig.compat.print.PrintAttributes properties, org.gvsig.fmap.geom.Geometry geometry)
void	setReferenceSystem(int system)	Sets the Reference System that defines how this units have to be handled.
void	setUnit(int unitIndex)	Defines the unit used to express measures.
double	toCartographicUnits(double value)

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractCartographicSupport

public AbstractCartographicSupport()

Method Details

setCartographicContext

public void setCartographicContext(ViewPort viewPort,
 double dpi,
 org.gvsig.fmap.geom.Geometry geom)

Specified by:

setCartographicContext in interface CartographicSupport

setCartographicContext

public void setCartographicContext(ViewPort viewPort,
 org.gvsig.compat.print.PrintAttributes properties,
 org.gvsig.fmap.geom.Geometry geometry)

Specified by:

setCartographicContext in interface CartographicSupport

setCartographicContext

public void setCartographicContext(double dpi)

Specified by:

setCartographicContext in interface CartographicSupport

setCartographicContext

public void setCartographicContext(org.gvsig.compat.print.PrintAttributes properties)

Specified by:

setCartographicContext in interface CartographicSupport

getCartographicContext

public CartographicSupport.CartographicContext getCartographicContext()

Specified by:

getCartographicContext in interface CartographicSupport

toCartographicUnits

public double toCartographicUnits(double value)

Specified by:

toCartographicUnits in interface CartographicSupport

setCartographicContext

public void setCartographicContext(CartographicSupport.CartographicContext ctx)

Specified by:

setCartographicContext in interface CartographicSupport

copyCartographicContext

public void copyCartographicContext(CartographicSupport element)

Specified by:

copyCartographicContext in interface CartographicSupport

setUnit

public void setUnit(int unitIndex)

Description copied from interface: CartographicSupport

Defines the unit used to express measures. It is the position of the unit in the MapContext.NAMES array.

Specified by:

setUnit in interface CartographicSupport

Parameters:

unitIndex - , the index of the unit in the MapContext.NAMES array

getUnit

public int getUnit()

Description copied from interface: CartographicSupport

Returns the unit used to express measures. It is the position of the unit in the MapContext.NAMES array.

Specified by:

getUnit in interface CartographicSupport

getReferenceSystem

public int getReferenceSystem()

Description copied from interface: CartographicSupport

Returns the Reference System used to draw the elements of the image.

The elements have to be scaled to pixel when the image is bein drawn in order to compose the map. The elements of the map may define its size in other units than pixel.

CartographicSupport enables the elements to define the size in measure units but these units may refer to different reference system. Two kinds of Reference Systems are allowed in this context: CartographicSupport.WORLD, and CartographicSupport.PAPER.

Depending on which Reference System is used the unit used by this element refers to distances in the real world (then they are map's CRS-dependant) or screen or printer output (then they are output DPI-dependant)

In case the unit used is pixel then the reference system does not have any effect since the source unit is the same than the target unit.

Specified by:

getReferenceSystem in interface CartographicSupport

Returns:

setReferenceSystem

public void setReferenceSystem(int system)

Description copied from interface: CartographicSupport

Sets the Reference System that defines how this units have to be handled. Possible values are:

1. CartographySupport.WORLD: Defines that the unit values refer to distances in the world. So, the size of the element displayed depends directly on the scale and CRS used by the map. The size of the elements defined to use CartographicSupport.WORLD will match exactly to their actual size in the real world.
2. CartographySupport.PAPER: Defines that the unit values refer to the length that the element will have regardless where it appears. If ReferenceSystem is CartographySupport.PAPER, and the length is (e.g.) millimeters the element will be displayed with the same amount of millimeters of length whether in the screen or the printer (screen DPI and printer DPI must be correctly configured).

Specified by:

setReferenceSystem in interface CartographicSupport

isInPixels

public boolean isInPixels()