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

Class CartographicSupportToolkit

java.lang.Object

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

public class CartographicSupportToolkit
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	DefaultMeasureUnit The unit that will be used when creating new symbols.
static int	DefaultReferenceSystem The reference system that will be used when creating new symbols.

Constructor Summary

Constructors

Constructor and Description
CartographicSupportToolkit()

Method Summary

Modifier and Type	Method and Description
static CartographicSupport.CartographicContext	createCartographicContext(ViewPort viewPort, double dpi, Geometry geom)
static double	getCartographicLength(CartographicSupport cartographicElement, double length, CartographicSupport.CartographicContext ctx)
static double	getCartographicLength(CartographicSupport cartographicElement, double length, double dist1Pixel, int mapUnits, double dpi) Calculates the distance in pixels corresponding to the provided length, according to the current rendering context (output dpi, map scale, map units) and the symbol cartographic settings (unit, size, and unit reference system).
static double	getCartographicLength(CartographicSupport cartographicElement, double length, ViewPort viewPort, double dpi)
static double	getScreenDpi()
static void	setScreenDpi(double dpi)

Methods inherited from class java.lang.Object

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

Field Detail

DefaultMeasureUnit

public static int DefaultMeasureUnit

The unit that will be used when creating new symbols.
Factory defaults to pixel.

DefaultReferenceSystem

public static int DefaultReferenceSystem

The reference system that will be used when creating new symbols.
Factory defaults to pixel.

Constructor Detail

CartographicSupportToolkit

public CartographicSupportToolkit()

Method Detail

createCartographicContext

public static CartographicSupport.CartographicContext createCartographicContext(ViewPort viewPort,
                                                                                double dpi,
                                                                                Geometry geom)

getCartographicLength

public static double getCartographicLength(CartographicSupport cartographicElement,
                                           double length,
                                           double dist1Pixel,
                                           int mapUnits,
                                           double dpi)

Calculates the distance in pixels corresponding to the provided length, according to the current rendering context (output dpi, map scale, map units) and the symbol cartographic settings (unit, size, and unit reference system).

Parameters:

cartographicElement - CartographicSupport object which contains the reference system and the measuring units for the provided length

length - The length to be computed in pixels. The length is supposed to be provided in the units defined in the cartographicElement

viewPort - The viewport, which defines the relationship between pixels and maps units

dpi - The resolution (dots per inch) of the target display device (printer, screen, etc)

Returns:

The distance in pixels corresponding to the provided length

getCartographicLength

public static double getCartographicLength(CartographicSupport cartographicElement,
                                           double length,
                                           ViewPort viewPort,
                                           double dpi)

getCartographicLength

public static double getCartographicLength(CartographicSupport cartographicElement,
                                           double length,
                                           CartographicSupport.CartographicContext ctx)

setScreenDpi

public static void setScreenDpi(double dpi)

getScreenDpi

public static double getScreenDpi()