gov.nasa.worldwind.render
Class FramebufferTexture

java.lang.Object
  gov.nasa.worldwind.render.FramebufferTexture

All Implemented Interfaces:

WWTexture

Direct Known Subclasses:

FBOTexture

public class FramebufferTexture
extends Object
implements WWTexture

Field Summary

protected List<LatLon>	corners
protected static int	DEFAULT_TESSELLATION_DENSITY The default density of texture coordinates to specify for the quadrilateral the texture's applied to.
protected int	height
protected Sector	sector
protected WWTexture	sourceTexture
protected int	tessellationDensity The density of explicit texture coordinates to specify for the quadrilateral the texture's applied to.
protected TextureCoords	textureCoords
protected int	width

Constructor Summary

FramebufferTexture(WWTexture imageSource, Sector sector, List<LatLon> corners)

Method Summary

void	applyInternalTransform(DrawContext dc) Applies any necessary transformations to the texture prior to its being rendered.
boolean	bind(DrawContext dc) Makes this texture the current texture for rendering.
protected Matrix	computeGeographicToCartesianTransform(Sector sector)
protected void	drawQuad(DrawContext dc, BilinearInterpolator interp, int slices, int stacks)
protected void	drawQuad(DrawContext dc, Matrix geoToCartesian, int slices, int stacks)
protected boolean	generateTexture(DrawContext dc, int width, int height)
List<LatLon>	getCorners()
int	getHeight(DrawContext dc) Returns the texture's height
Object	getImageSource() Returns the texture's image source.
Sector	getSector()
protected int	getTessellationDensity()
TextureCoords	getTexCoords() Returns the texture's texture coordinates, which may be other than [0,0],[1,1] if the texture size is not a power of two or the texture must be flipped when rendered.
int	getWidth(DrawContext dc) Returns the texture's width.
protected Texture	initializeTexture(DrawContext dc)
boolean	isTextureCurrent(DrawContext dc) Indicates whether the texture is currently available for use without regenerating it from its image source.
boolean	isTextureInitializationFailed() Indicates whether an attempt to initialize the texture failed, which occurs when the image source is a non-existent image file or for other reasons specific to the image source.
protected Vec4	transformToQuadCoordinates(Matrix geoToCartesian, LatLon latLon)

Methods inherited from class java.lang.Object

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

Field Detail

corners

protected List<LatLon> corners

DEFAULT_TESSELLATION_DENSITY

protected static final int DEFAULT_TESSELLATION_DENSITY

The default density of texture coordinates to specify for the quadrilateral the texture's applied to.

See Also:

Constant Field Values

height

protected int height

sector

protected Sector sector

sourceTexture

protected WWTexture sourceTexture

tessellationDensity

protected int tessellationDensity

The density of explicit texture coordinates to specify for the quadrilateral the texture's applied to.

textureCoords

protected TextureCoords textureCoords

width

protected int width

Constructor Detail

FramebufferTexture

public FramebufferTexture(WWTexture imageSource,
                          Sector sector,
                          List<LatLon> corners)

Method Detail

applyInternalTransform

public void applyInternalTransform(DrawContext dc)

Description copied from interface: WWTexture

Applies any necessary transformations to the texture prior to its being rendered. A common transformation is mapping texture coordinates from a flipped or non-square state to conventionally oriented OpenGL values.

Specified by:

applyInternalTransform in interface WWTexture

Parameters:

dc - the current draw context.

bind

public boolean bind(DrawContext dc)

Description copied from interface: WWTexture

Makes this texture the current texture for rendering.

If the implementing instance's internal texture has not been created from its image source, the implementing class determines when the texture is retrieved and available.

If a texture cannot be created from its image source it cannot be bound. This method returns an indication of whether the texture was bound or was not bound due to a failure during creation.

Specified by:

bind in interface WWTexture

Parameters:

dc - the current draw context.

Returns:

true if the texture was bound, otherwise false.

computeGeographicToCartesianTransform

protected Matrix computeGeographicToCartesianTransform(Sector sector)

drawQuad

protected void drawQuad(DrawContext dc,
                        BilinearInterpolator interp,
                        int slices,
                        int stacks)

drawQuad

protected void drawQuad(DrawContext dc,
                        Matrix geoToCartesian,
                        int slices,
                        int stacks)

generateTexture

protected boolean generateTexture(DrawContext dc,
                                  int width,
                                  int height)

getCorners

public List<LatLon> getCorners()

getHeight

public int getHeight(DrawContext dc)

Description copied from interface: WWTexture

Returns the texture's height

Specified by:

getHeight in interface WWTexture

Parameters:

dc - the current draw context

Returns:

the texture's height, or 0 if the texture's size is currently unknown.

getImageSource

public Object getImageSource()

Description copied from interface: WWTexture

Returns the texture's image source.

Specified by:

getImageSource in interface WWTexture

Returns:

the texture's image source.

getSector

public Sector getSector()

getTessellationDensity

protected int getTessellationDensity()

getTexCoords

public TextureCoords getTexCoords()

Description copied from interface: WWTexture

Returns the texture's texture coordinates, which may be other than [0,0],[1,1] if the texture size is not a power of two or the texture must be flipped when rendered.

Specified by:

getTexCoords in interface WWTexture

Returns:

returns the texture's texture coordinates.

getWidth

public int getWidth(DrawContext dc)

Description copied from interface: WWTexture

Returns the texture's width.

Specified by:

getWidth in interface WWTexture

Parameters:

dc - the current draw context

Returns:

the texture's width, or 0 if the texture's size is currently unknown.

initializeTexture

protected Texture initializeTexture(DrawContext dc)

isTextureCurrent

public boolean isTextureCurrent(DrawContext dc)

Description copied from interface: WWTexture

Indicates whether the texture is currently available for use without regenerating it from its image source.

Specified by:

isTextureCurrent in interface WWTexture

Parameters:

dc - the current draw context

Returns:

true if the texture is available and consistent with its image source, otherwise false.

isTextureInitializationFailed

public boolean isTextureInitializationFailed()

Description copied from interface: WWTexture

Indicates whether an attempt to initialize the texture failed, which occurs when the image source is a non-existent image file or for other reasons specific to the image source.

Specified by:

isTextureInitializationFailed in interface WWTexture

Returns:

true if texture initialization failed, otherwise false.

transformToQuadCoordinates

protected Vec4 transformToQuadCoordinates(Matrix geoToCartesian,
                                          LatLon latLon)