gov.nasa.worldwind.render
Class AbstractGeneralShape

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.WWObjectImpl
          gov.nasa.worldwind.render.AbstractShape
              gov.nasa.worldwind.render.AbstractGeneralShape

All Implemented Interfaces:

AVList, MessageListener, Exportable, ExtentHolder, Movable, GeographicExtent, Highlightable, OrderedRenderable, Renderable, Restorable, WWObject, PropertyChangeListener, EventListener

Direct Known Subclasses:

ColladaMeshShape

public abstract class AbstractGeneralShape
extends AbstractShape

A shape that is positioned and oriented independently of its defining geometry. This shape typically represents 3D models imported from COLLADA and other 3D file formats. The model's geometry is defined in its own coordinate system; properties of this shape place and orient the model geographically. Specific model types subclass this class to provide their implementation and any additional properties.

This class also accepts a resource map to independently link resources named in the model definition (the defining model file) to actual resources. Each map entry's key is a resource name as expressed in the model definition. Each map entry's value is the reference to the actual resource. The reference is interpreted by rules specific to the model format, but typically may be a relative or absolute file reference or a URL to a local or remote resource. If the map or an entry referred to by the model definition is not defined, resource references are typically considered relative to the location of the model definition's location.

In the case of a COLLADA file referenced from a KML file, relative references are considered relative to the location of the KML file. If the file is KMZ, relative references are considered references to resources within the KMZ archive.

This class applies ShapeAttributes to the shape, but the effect of some of those attributes, such as ShapeAttributes.isDrawOutline() is dependent on the specific implementation of this AbstractGeneralShape. See the class description of those shapes to determine how shape attributes are applied.

Nested Class Summary

protected static class

AbstractGeneralShape.ShapeData This class holds globe-specific data for this shape.

Nested classes/interfaces inherited from class gov.nasa.worldwind.render.AbstractShape

AbstractShape.AbstractShapeData

Field Summary

protected Angle	heading This shape's heading, positive values are clockwise from north.
protected Position	modelPosition This shape's geographic location.
protected Vec4	modelScale A scale to apply to the model.
protected Angle	pitch This shape's pitch (often called tilt), its rotation about the model's X axis.
protected Map<String,Object>	resourceMap A map indicating the actual location of resources named in the model.
protected Angle	roll This shape's roll, its rotation about the model's Y axis.

Fields inherited from class gov.nasa.worldwind.render.AbstractShape

activeAttributes, altitudeMode, BEogsh, currentData, DEFAULT_ALTITUDE_MODE, DEFAULT_GEOMETRY_GENERATION_INTERVAL, DEFAULT_HIGHLIGHT_MATERIAL, DEFAULT_INTERIOR_MATERIAL, DEFAULT_OUTLINE_MATERIAL, DEFAULT_OUTLINE_PICK_WIDTH, defaultAttributes, delegateOwner, enableBatchPicking, enableBatchRendering, enableDepthOffset, highlightAttrs, highlighted, maxExpiryTime, minExpiryTime, normalAttrs, outlinePickWidth, outlineShapeRenderer, pickLayer, pickSupport, referencePosition, sector, shapeDataCache, VBO_THRESHOLD, viewDistanceExpiration, visible

Fields inherited from interface gov.nasa.worldwind.Exportable

FORMAT_NOT_SUPPORTED, FORMAT_PARTIALLY_SUPPORTED, FORMAT_SUPPORTED

Constructor Summary

AbstractGeneralShape()
Constructs a shape at 0 latitude, longitude and altitude.

Method Summary

protected double	computeEyeDistance(DrawContext dc, AbstractGeneralShape.ShapeData shapeData) Computes the minimum distance between this shape and the eye point.
protected Vec4	computeReferencePoint(Terrain terrain)
protected void	doExportAsKML(XMLStreamWriter xmlWriter) Exports shape-specific fields.
protected AbstractGeneralShape.ShapeData	getCurrent() Returns the current shape data cache entry.
Angle	getHeading() Indicates this shape's heading, its rotation clockwise from north.
Position	getModelPosition() Indicates this shape's geographic position.
Vec4	getModelScale() Indicates this shape's scale, if any.
Angle	getPitch() Indicates this shape's pitch -- often referred to as tilt -- the angle to rotate this shape's model about its X axis.
Position	getReferencePosition() A position associated with the object that indicates its aggregate geographic position.
Map<String,Object>	getResourceMap() Returns this shape's resource map.
Angle	getRoll() Indicates this shape's roll, the angle to rotate this shape's model about its Y axis.
Sector	getSector() Returns the object's geographic extent.
protected void	initialize() Called during construction to establish any subclass-specific state such as different default values than those set by this class.
void	moveTo(Position position) Move the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.
void	setHeading(Angle heading) Specifies this shape's heading, its rotation clockwise from north.
void	setModelPosition(Position modelPosition) Specifies this shape's geographic position.
void	setModelScale(Vec4 modelScale) Specifies this shape's scale.
void	setPitch(Angle pitch) Specifies this shape's pitch -- often referred to as tilt -- the angle to rotate this shape's model about its X axis.
void	setResourceMap(Map<String,Object> resourceMap) Specifies this shape's resource map.
void	setRoll(Angle roll) Specifies this shape's roll, the angle to rotate this shape's model about its Y axis.

Methods inherited from class gov.nasa.worldwind.render.AbstractShape

addOrderedRenderable, beginDrawing, checkViewDistanceExpiration, clearCachedVbos, computeExtentFromPositions, computePoint, countTriangleVertices, createCacheEntry, createPickedObject, determineActiveAttributes, doDrawInterior, doDrawOrderedRenderable, doDrawOutline, doGetRestorableState, doMakeOrderedRenderable, doRestoreState, drawBatched, drawInterior, drawOrderedRenderable, drawOutline, endDrawing, export, exportAsKML, fillVBO, getActiveAttributes, getAltitudeMode, getAttributes, getCurrentData, getDelegateOwner, getDistanceFromEye, getExtent, getExtent, getGeometryRegenerationInterval, getHighlightAttributes, getOutlinePickWidth, getReferencePoint, getRestorableState, getVboIds, intersect, intersectsFrustum, isEnableBatchPicking, isEnableBatchRendering, isEnableDepthOffset, isExportFormatSupported, isHighlighted, isOrderedRenderableValid, isTerrainDependent, isViewDistanceExpiration, isVisible, makeOrderedRenderable, makeTexture, move, mustApplyLighting, mustApplyLighting, mustApplyTexture, mustCreateNormals, mustCreateNormals, mustDrawInterior, mustDrawOutline, mustRegenerateGeometry, pick, prepareToDrawInterior, prepareToDrawOutline, render, reset, restoreState, setAltitudeMode, setAttributes, setDelegateOwner, setEnableBatchPicking, setEnableBatchRendering, setEnableDepthOffset, setGeometryRegenerationInterval, setHighlightAttributes, setHighlighted, setOutlinePickWidth, setReferencePosition, setViewDistanceExpiration, setVisible, shouldUseVBOs

Methods inherited from class gov.nasa.worldwind.WWObjectImpl

onMessage, propertyChange

Methods inherited from class gov.nasa.worldwind.avlist.AVListImpl

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getBooleanValue, getBooleanValue, getChangeSupport, getDoubleValue, getDoubleValue, getEntries, getIntegerValue, getIntegerValue, getLongValue, getLongValue, getRestorableStateForAVPair, getStringValue, getStringValue, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from class java.lang.Object

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

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

Field Detail

heading

protected Angle heading

This shape's heading, positive values are clockwise from north. Null is an allowed value.

modelPosition

protected Position modelPosition

This shape's geographic location. The altitude is relative to this shapes altitude mode.

modelScale

protected Vec4 modelScale

A scale to apply to the model. Null is an allowed value.

pitch

protected Angle pitch

This shape's pitch (often called tilt), its rotation about the model's X axis. Positive values are clockwise. Null is an allowed value.

resourceMap

protected Map<String,Object> resourceMap

A map indicating the actual location of resources named in the model. Null is an allowed value.

roll

protected Angle roll

This shape's roll, its rotation about the model's Y axis. Positive values are clockwise. Null is an allowed Value.

Constructor Detail

AbstractGeneralShape

public AbstractGeneralShape()

Constructs a shape at 0 latitude, longitude and altitude. Because the shape's default altitude mode is ABSOLUTE, the default altitude is relative to mean sea level.

Method Detail

computeEyeDistance

protected double computeEyeDistance(DrawContext dc,
                                    AbstractGeneralShape.ShapeData shapeData)

Computes the minimum distance between this shape and the eye point.

A AbstractShape.AbstractShapeData must be current when this method is called.

Parameters:

dc - the current draw context.

shapeData - the current shape data for this shape.

Returns:

the minimum distance from the shape to the eye point.

computeReferencePoint

protected Vec4 computeReferencePoint(Terrain terrain)

doExportAsKML

protected void doExportAsKML(XMLStreamWriter xmlWriter)
                      throws IOException,
                             XMLStreamException

Description copied from class: AbstractShape

Exports shape-specific fields.

Specified by:

doExportAsKML in class AbstractShape

Parameters:

xmlWriter - the export writer to write to.

Throws:

IOException - if an IO error occurs while writing to the output destination.

XMLStreamException - if an exception occurs converting this shape's fields to XML.

getCurrent

protected AbstractGeneralShape.ShapeData getCurrent()

Returns the current shape data cache entry.

Returns:

the current data cache entry.

getHeading

public Angle getHeading()

Indicates this shape's heading, its rotation clockwise from north.

Returns:

this shape's heading, or null if no heading has been specified.

getModelPosition

public Position getModelPosition()

Indicates this shape's geographic position.

Returns:

this shape's geographic position. The position's altitude is relative to this shape's altitude mode.

getModelScale

public Vec4 getModelScale()

Indicates this shape's scale, if any.

Returns:

this shape's scale, or null if no scale has been specified.

getPitch

public Angle getPitch()

Indicates this shape's pitch -- often referred to as tilt -- the angle to rotate this shape's model about its X axis.

Returns:

this shape's pitch, or null if no pitch has been specified. Positive values are clockwise as observed looking along the model's X axis toward the model's origin.

getReferencePosition

public Position getReferencePosition()

Description copied from interface: Movable

A position associated with the object that indicates its aggregate geographic position. The chosen position varies among implementers of this interface. For objects defined by a list of positions, the reference position is typically the first position in the list. For symmetric objects the reference position is often the center of the object. In many cases the object's reference position may be explicitly specified by the application.

Returns:

the object's reference position, or null if no reference position is available.

getResourceMap

public Map<String,Object> getResourceMap()

Returns this shape's resource map.

Returns:

this shape's resource map, or null if this shape has no resource map.

getRoll

public Angle getRoll()

Indicates this shape's roll, the angle to rotate this shape's model about its Y axis.

Returns:

this shape's roll, or null if no roll has been specified. Positive values are clockwise as observed looking along the model's Y axis toward the origin.

getSector

public Sector getSector()

Returns the object's geographic extent. Not currently supported.

Returns:

the object's geographic extent.

initialize

protected void initialize()

Description copied from class: AbstractShape

Called during construction to establish any subclass-specific state such as different default values than those set by this class.

Specified by:

initialize in class AbstractShape

moveTo

public void moveTo(Position position)

Description copied from interface: Movable

Move the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.

Parameters:

position - the new position of the shape's reference position.

setHeading

public void setHeading(Angle heading)

Specifies this shape's heading, its rotation clockwise from north.

Parameters:

heading - this shape's heading. May be null.

setModelPosition

public void setModelPosition(Position modelPosition)

Specifies this shape's geographic position. The position's altitude is relative to this shape's altitude mode.

Parameters:

modelPosition - this shape's geographic position.

Throws:

IllegalArgumentException - if the position is null.

setModelScale

public void setModelScale(Vec4 modelScale)

Specifies this shape's scale. The scale is applied to the shape's model definition in the model's coordinate system prior to oriented and positioning the model.

Parameters:

modelScale - this shape's scale. May be null, in which case no scaling is applied.

setPitch

public void setPitch(Angle pitch)

Specifies this shape's pitch -- often referred to as tilt -- the angle to rotate this shape's model about its X axis.

Parameters:

pitch - this shape's pitch. Positive values are clockwise as observed looking along the model's X axis toward the model's origin. May be null.

setResourceMap

public void setResourceMap(Map<String,Object> resourceMap)

Specifies this shape's resource map. The resource map is described above in this class' description.

Parameters:

resourceMap - the resource map for this shape. May be null, in which case no resource map is used.

setRoll

public void setRoll(Angle roll)

Specifies this shape's roll, the angle to rotate this shape's model about its Y axis.

Parameters:

roll - this shape's roll. May be null. Positive values are clockwise as observed looking along the model's Y axis toward the origin.