gov.nasa.worldwind.terrain

Interface Tessellator

All Superinterfaces:

AVList, java.util.EventListener, MessageListener, java.beans.PropertyChangeListener, WWObject

All Known Implementing Classes:

RectangularTessellator

public interface Tessellator
extends WWObject

Method Summary

Modifier and Type	Method and Description
long	getUpdateFrequency() Indicates the maximum amount of time that may elapse between re-tessellation.
boolean	isMakeTileSkirts() Indicates whether the tessellator creates "skirts" around the tiles in order to hide gaps between adjacent tiles with differing tessellations.
void	setMakeTileSkirts(boolean makeTileSkirts) Specifies whether the tessellator creates "skirts" around the tiles in order to hide gaps between adjacent tiles with differing tessellations.
void	setUpdateFrequency(long updateFrequency) Indicates the maximum amount of time that may elapse between re-tessellation.
SectorGeometryList	tessellate(DrawContext dc) Tessellate a globe for the currently visible region.

Methods inherited from interface gov.nasa.worldwind.avlist.AVList

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getEntries, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from interface java.beans.PropertyChangeListener

propertyChange

Methods inherited from interface gov.nasa.worldwind.event.MessageListener

onMessage

Method Detail

getUpdateFrequency

long getUpdateFrequency()

Indicates the maximum amount of time that may elapse between re-tessellation. Re-tessellation is performed to synchronize the terrain's resolution into with the current viewing state and availability of elevations.

Returns:

the update frequency, in milliseconds.

isMakeTileSkirts

boolean isMakeTileSkirts()

Indicates whether the tessellator creates "skirts" around the tiles in order to hide gaps between adjacent tiles with differing tessellations.

Returns:

true if skirts are created, otherwise false.

setMakeTileSkirts

void setMakeTileSkirts(boolean makeTileSkirts)

Specifies whether the tessellator creates "skirts" around the tiles in order to hide gaps between adjacent tiles with differing tessellations.

Parameters:

makeTileSkirts - true if skirts are created, otherwise false.

setUpdateFrequency

void setUpdateFrequency(long updateFrequency)

Indicates the maximum amount of time that may elapse between re-tessellation. Re-tessellation is performed to synchronize the terrain's resolution into with the current viewing state and availability of elevations.

Parameters:

updateFrequency - the update frequency, in milliseconds.

tessellate

SectorGeometryList tessellate(DrawContext dc)

Tessellate a globe for the currently visible region.

Parameters:

dc - the current draw context.

Returns:

the tessellation, or null if the tessellation failed or the draw context identifies no visible region.

Throws:

java.lang.IllegalStateException - if the globe has no tessellator and a default tessellator cannot be created.