de.micromata.opengis.kml.v_2_2_0

Class Lod

java.lang.Object

de.micromata.opengis.kml.v_2_2_0.AbstractObject

de.micromata.opengis.kml.v_2_2_0.Lod

All Implemented Interfaces:

Cloneable

public class Lod
extends AbstractObject
implements Cloneable

(required) Measurement in screen pixels that represents the minimum limit of the visibility range for a given Region. Google Earth calculates the size of the Region when projected onto screen space. Then it computes the square root of the Region's area (if, for example, the Region is square and the viewpoint is directly above the Region, and the Region is not tilted, this measurement is equal to the width of the projected Region). If this measurement falls within the limits defined by and (and if the is in view), the Region is active. If this limit is not reached, the associated geometry is considered to be too far from the user's viewpoint to be drawn. Measurement in screen pixels that represents the maximum limit of the visibility range for a given Region. A value of −1, the default, indicates "active to infinite size." Distance over which the geometry fades, from fully opaque to fully transparent. This ramp value, expressed in screen pixels, is applied at the minimum end of the LOD (visibility) limits. Distance over which the geometry fades, from fully transparent to fully opaque. This ramp value, expressed in screen pixels, is applied at the maximum end of the LOD (visibility) limits.

Field Summary

Fields

Modifier and Type	Field and Description
protected List<AbstractObject>	lodObjectExtension
protected List<Object>	lodSimpleExtension
protected double	maxFadeExtent Distance over which the geometry fades, from fully transparent to fully opaque.
protected double	maxLodPixels Measurement in screen pixels that represents the maximum limit of the visibility range for a given Region.
protected double	minFadeExtent Distance over which the geometry fades, from fully opaque to fully transparent.
protected double	minLodPixels (required) Measurement in screen pixels that represents the minimum limit of the visibility range for a given Region.

Fields inherited from class de.micromata.opengis.kml.v_2_2_0.AbstractObject

id, objectSimpleExtension, targetId

Constructor Summary

Constructors

Constructor and Description
Lod()

Method Summary

Methods

Modifier and Type	Method and Description
Lod	addToLodObjectExtension(AbstractObject lodObjectExtension) add a value to the lodObjectExtension property collection
Lod	addToLodSimpleExtension(Object lodSimpleExtension) add a value to the lodSimpleExtension property collection
Lod	addToObjectSimpleExtension(Object objectSimpleExtension) add a value to the objectSimpleExtension property collection
Lod	clone()
boolean	equals(Object obj)
List<AbstractObject>	getLodObjectExtension()
List<Object>	getLodSimpleExtension()
double	getMaxFadeExtent()
double	getMaxLodPixels()
double	getMinFadeExtent()
double	getMinLodPixels()
int	hashCode()
void	setLodObjectExtension(List<AbstractObject> lodObjectExtension)
void	setLodSimpleExtension(List<Object> lodSimpleExtension)
void	setMaxFadeExtent(double value)
void	setMaxLodPixels(double value)
void	setMinFadeExtent(double value)
void	setMinLodPixels(double value)
void	setObjectSimpleExtension(List<Object> objectSimpleExtension)
Lod	withId(String id) fluent setter
Lod	withLodObjectExtension(List<AbstractObject> lodObjectExtension) fluent setter
Lod	withLodSimpleExtension(List<Object> lodSimpleExtension) fluent setter
Lod	withMaxFadeExtent(double maxFadeExtent) fluent setter
Lod	withMaxLodPixels(double maxLodPixels) fluent setter
Lod	withMinFadeExtent(double minFadeExtent) fluent setter
Lod	withMinLodPixels(double minLodPixels) fluent setter
Lod	withObjectSimpleExtension(List<Object> objectSimpleExtension) fluent setter
Lod	withTargetId(String targetId) fluent setter

Methods inherited from class de.micromata.opengis.kml.v_2_2_0.AbstractObject

getId, getObjectSimpleExtension, getTargetId, setId, setTargetId

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

minLodPixels

protected double minLodPixels

(required)

Measurement in screen pixels that represents the minimum limit of the visibility range for a given Region. Google Earth calculates the size of the Region when projected onto screen space. Then it computes the square root of the Region's area (if, for example, the Region is square and the viewpoint is directly above the Region, and the Region is not tilted, this measurement is equal to the width of the projected Region). If this measurement falls within the limits defined by and (and if the is in view), the Region is active. If this limit is not reached, the associated geometry is considered to be too far from the user's viewpoint to be drawn.

maxLodPixels

protected double maxLodPixels

Measurement in screen pixels that represents the maximum limit of the visibility range for a given Region. A value of −1, the default, indicates "active to infinite size."

minFadeExtent

protected double minFadeExtent

Distance over which the geometry fades, from fully opaque to fully transparent. This ramp value, expressed in screen pixels, is applied at the minimum end of the LOD (visibility) limits.

maxFadeExtent

protected double maxFadeExtent

Distance over which the geometry fades, from fully transparent to fully opaque. This ramp value, expressed in screen pixels, is applied at the maximum end of the LOD (visibility) limits.

In the following diagram, if P=the calculated projected pixel size, the circled numbers indicate the following: if (P < minLodPixels) opacity=0 //#1 in diagram else if(P < minLodPixels + minFadeExtent) opacity=(P - minLodPixels)/minFadeExtent //#2 in diagram else if (P < maxLodPixels - maxFadeExtent) opacity=1 //#3 in diagram else if (P < maxLodPixels) opacity=(maxLodPixels-P)/maxFadeExtent //#4 in diagram else opacity=0 //#5 in diagram

lodSimpleExtension

protected List<Object> lodSimpleExtension

lodObjectExtension

protected List<AbstractObject> lodObjectExtension