gov.nasa.worldwind.render
Class Path.PathData

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.cache.ShapeDataCache.ShapeDataCacheEntry
          gov.nasa.worldwind.render.AbstractShape.AbstractShapeData
              gov.nasa.worldwind.render.Path.PathData

All Implemented Interfaces:

AVList

Direct Known Subclasses:

MultiResolutionPath.MultiResolutionPathData

Enclosing class:

Path

protected static class Path.PathData
extends AbstractShape.AbstractShapeData

Maintains globe-dependent computed data such as Cartesian vertices and extents. One entry exists for each distinct globe that this shape encounters in calls to AbstractShape.render(DrawContext). See AbstractShape.

Field Summary

protected int	colorOffset Indicates the offset in number of floats to the first RGBA color tuple in renderedPath.
protected boolean	hasExtrusionPoints Indicates whether the rendered path has extrusion points in addition to path points.
protected IntBuffer	polePositions Indices to the renderedPath identifying the vertices of the originally specified boundary positions and their corresponding terrain point.
protected IntBuffer	positionPoints Indices to the renderedPath identifying the vertices of the originally specified boundary positions.
protected FloatBuffer	renderedPath The model coordinate vertices to render, all relative to this shape data's reference center.
protected ArrayList<Color>	tessellatedColors The colors corresponding to each tessellated position, or null if the path's positionColors is null.
protected ArrayList<Position>	tessellatedPositions The positions formed from applying path type and terrain conformance.
protected int	vertexCount Indicates the number of vertices represented by renderedPath.
protected int	vertexStride Indicates the stride in number of floats between the first element of consecutive vertices in renderedPath.

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

frameNumber, referenceDistance, referencePoint, vboCacheKey

Fields inherited from class gov.nasa.worldwind.cache.ShapeDataCache.ShapeDataCacheEntry

extent, eyeDistance, globeStateKey, lastUsed, timer, verticalExaggeration

Constructor Summary

Path.PathData(DrawContext dc, Path shape)

Method Summary

int	getColorOffset() Indicates the offset in number of floats to the first RGBA color tuple in renderedPath.
IntBuffer	getPolePositions() Returns a buffer of indices into the rendered path (renderedPath that identify the top and bottom vertices of this path's vertical line segments.
IntBuffer	getPositionPoints() Returns a buffer of indices into the rendered path (renderedPath that identify the originally specified positions that remain after tessellation.
FloatBuffer	getRenderedPath() The Cartesian coordinates of the tessellated positions.
List<Color>	getTessellatedColors() Indicates the colors corresponding to each position in tessellatedPositions, or null if the path does not have per-position colors.
List<Position>	getTessellatedPositions() The positions resulting from tessellating this path.
int	getVertexCount() Indicates the number of vertices in renderedPath.
int	getVertexStride() Indicates the stride in number of floats between the first element of consecutive vertices in renderedPath.
boolean	isHasExtrusionPoints() Indicates whether this path is extruded and the extrusion points have been computed.
void	setColorOffset(int offset) Specifies the offset in number of floats to the first RGBA color tuple in renderedPath.
void	setHasExtrusionPoints(boolean hasExtrusionPoints)
void	setPolePositions(IntBuffer polePositions)
void	setPositionPoints(IntBuffer posPoints)
void	setRenderedPath(FloatBuffer renderedPath)
void	setTessellatedColors(ArrayList<Color> tessellatedColors) Specifies the colors corresponding to each position in tessellatedPositions, or null to specify that the path does not have per-position colors.
void	setTessellatedPositions(ArrayList<Position> tessellatedPositions)
void	setVertexCount(int count) Specifies the number of vertices in renderedPath.
void	setVertexStride(int stride) Specifies the stride in number of floats between the first element of consecutive vertices in renderedPath.

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

getFrameNumber, getReferenceDistance, getReferencePoint, getVboCacheKey, setFrameNumber, setReferenceDistance, setReferencePoint, setVboCacheKey

Methods inherited from class gov.nasa.worldwind.cache.ShapeDataCache.ShapeDataCacheEntry

getExtent, getEyeDistance, getGlobeStateKey, getTimer, getVerticalExaggeration, isExpired, isValid, restartTimer, setExpired, setExtent, setEyeDistance, setGlobeStateKey, setTimer, setVerticalExaggeration

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

Field Detail

colorOffset

protected int colorOffset

Indicates the offset in number of floats to the first RGBA color tuple in renderedPath. This is 0 if renderedPath has no RGBA color tuples.

hasExtrusionPoints

protected boolean hasExtrusionPoints

Indicates whether the rendered path has extrusion points in addition to path points.

polePositions

protected IntBuffer polePositions

Indices to the renderedPath identifying the vertices of the originally specified boundary positions and their corresponding terrain point. This is used to draw vertical lines at those positions when the path is extruded.

positionPoints

protected IntBuffer positionPoints

Indices to the renderedPath identifying the vertices of the originally specified boundary positions. (Not their terrain points as well, as polePositions does.)

renderedPath

protected FloatBuffer renderedPath

The model coordinate vertices to render, all relative to this shape data's reference center. If the path is extruded, the base vertices are interleaved: Vcap, Vbase, Vcap, Vbase, ...

tessellatedColors

protected ArrayList<Color> tessellatedColors

The colors corresponding to each tessellated position, or null if the path's positionColors is null.

tessellatedPositions

protected ArrayList<Position> tessellatedPositions

The positions formed from applying path type and terrain conformance.

vertexCount

protected int vertexCount

Indicates the number of vertices represented by renderedPath.

vertexStride

protected int vertexStride

Indicates the stride in number of floats between the first element of consecutive vertices in renderedPath.

Constructor Detail

Path.PathData

public Path.PathData(DrawContext dc,
                     Path shape)

Method Detail

getColorOffset

public int getColorOffset()

Indicates the offset in number of floats to the first RGBA color tuple in renderedPath. This returns 0 if renderedPath has no RGBA color tuples.

Returns:

the offset in number of floats to the first RGBA color tuple in renderedPath.

getPolePositions

public IntBuffer getPolePositions()

Returns a buffer of indices into the rendered path (renderedPath that identify the top and bottom vertices of this path's vertical line segments.

Returns:

the path's pole positions.

getPositionPoints

public IntBuffer getPositionPoints()

Returns a buffer of indices into the rendered path (renderedPath that identify the originally specified positions that remain after tessellation. These positions are those of the position dots, if drawn.

Returns:

the path's originally specified positions that survived tessellation.

getRenderedPath

public FloatBuffer getRenderedPath()

The Cartesian coordinates of the tessellated positions. If path verticals are enabled, this path also contains the ground points corresponding to the path positions.

Returns:

the Cartesian coordinates of the tessellated positions.

getTessellatedColors

public List<Color> getTessellatedColors()

Indicates the colors corresponding to each position in tessellatedPositions, or null if the path does not have per-position colors.

Returns:

the colors corresponding to each path position, or null if the path does not have per-position colors.

getTessellatedPositions

public List<Position> getTessellatedPositions()

The positions resulting from tessellating this path. If the path's attributes don't cause tessellation, then the positions returned are those originally specified.

Returns:

the positions computed by path tessellation.

getVertexCount

public int getVertexCount()

Indicates the number of vertices in renderedPath.

Returns:

the the number of verices in renderedPath.

getVertexStride

public int getVertexStride()

Indicates the stride in number of floats between the first element of consecutive vertices in renderedPath.

Returns:

the stride in number of floats between vertices in in renderedPath.

isHasExtrusionPoints

public boolean isHasExtrusionPoints()

Indicates whether this path is extruded and the extrusion points have been computed.

Returns:

true if the path is extruded and the extrusion points are computed, otherwise false.

setColorOffset

public void setColorOffset(int offset)

Specifies the offset in number of floats to the first RGBA color tuple in renderedPath. Specify 0 if renderedPath has no RGBA color tuples.

Parameters:

offset - the offset in number of floats to the first RGBA color tuple in renderedPath.

setHasExtrusionPoints

public void setHasExtrusionPoints(boolean hasExtrusionPoints)

setPolePositions

public void setPolePositions(IntBuffer polePositions)

setPositionPoints

public void setPositionPoints(IntBuffer posPoints)

setRenderedPath

public void setRenderedPath(FloatBuffer renderedPath)

setTessellatedColors

public void setTessellatedColors(ArrayList<Color> tessellatedColors)

Specifies the colors corresponding to each position in tessellatedPositions, or null to specify that the path does not have per-position colors. The entries in the specified list must have a one-to-one correspondence with the entries in tessellatedPositions.

Parameters:

tessellatedColors - the colors corresponding to each path position, or null if the path does not have per-position colors.

setTessellatedPositions

public void setTessellatedPositions(ArrayList<Position> tessellatedPositions)

setVertexCount

public void setVertexCount(int count)

Specifies the number of vertices in renderedPath. Specify 0 if renderedPath contains no vertices.

Parameters:

count - the the number of verices in renderedPath.

setVertexStride

public void setVertexStride(int stride)

Specifies the stride in number of floats between the first element of consecutive vertices in renderedPath.

Parameters:

stride - the stride in number of floats between vertices in in renderedPath.