org.gvsig.fmap.dal.coverage.grid.render

Interface ImageDrawer

All Known Implementing Classes:

ImageDrawerImpl

public interface ImageDrawer

Writes data from a buffer on a Image object. At this level neither bounding box nor rotations nor world coordinates are managed.

Method Summary

Methods

Modifier and Type	Method and Description
Buffer	addEnhanced(Statistics stats) Adds a enhanced filter to the buffer
Buffer	addEnhanced(Statistics stats, boolean tailTrim, double tailTrimValue) Adds a enhanced filter to the buffer
void	addFilters(Statistics stats, List<RasterFilter> filters) Adds a list of filters
void	dispose() Releases the link to the buffer.
Image	drawBufferOverImageObject() Dibuja el buffer sobre un objeto Image de java.awt y devuelve el resultado.
void	setBuffer(Buffer b) Sets the buffer to render
void	setLastTransparency(Transparency t) Assigns the buffer transparency
void	setOutputSize(int width, int height) Sets the size of the output buffer.
void	setSupersamplingOn(double[] step) Sets the shift in pixels from the upper left corner.

Method Detail

setBuffer

void setBuffer(Buffer b)

Sets the buffer to render

setLastTransparency

void setLastTransparency(Transparency t)

Assigns the buffer transparency

Parameters:

t -

setSupersamplingOn

void setSupersamplingOn(double[] step)

Sets the shift in pixels from the upper left corner. It is useful when we need supersampling to render the image. If the step is null then the supersampling is deactivated else the size of the output buffer will be width X height pixels. This size should be set with setOutPutSize method. Exists supersampling when the zoom to draw is greater than 1:1. To draw a pixel will be necessary more than one pixel in the output buffer.

Parameters:

step - Desplazamiento

setOutputSize

void setOutputSize(int width,
                 int height)

Sets the size of the output buffer. This is useful to reescale the output buffer

Parameters:

width - Ancho

h - Alto

dispose

void dispose()

Releases the link to the buffer.

addFilters

void addFilters(Statistics stats,
              List<RasterFilter> filters)
                throws FilterTypeException

Adds a list of filters

Parameters:

stats -

filters -

Throws:

FilterTypeException

addEnhanced

Buffer addEnhanced(Statistics stats)

Adds a enhanced filter to the buffer

Parameters:

stats -

Returns:

addEnhanced

Buffer addEnhanced(Statistics stats,
                 boolean tailTrim,
                 double tailTrimValue)

Adds a enhanced filter to the buffer

Parameters:

stats -

Returns:

drawBufferOverImageObject

Image drawBufferOverImageObject()
                                throws ProcessInterruptedException

Dibuja el buffer sobre un objeto Image de java.awt y devuelve el resultado.

Parameters:

replicateBand - Flag de comportamiento del renderizado. Al renderizar el buffer este obtiene la primera banda del buffer y la asigna al R, la segunda al G y la tercera al B. Este flag no es tomado en cuenta en caso de que existan 3 bandas en el buffer. Si no hay tres bandas, por ejemplo una y el flag es true esta será replicada en R, G y B, en caso de ser false la banda será dibujada en su posición (R, G o B) y en las otras bandas se rellenará con 0.

transparentBand. - Si es true la banda 4 es alpha y si es false no lo es.

Returns:

java.awt.Image con el buffer dibujado.

Throws:

ProcessInterruptedException