Revision 24170 trunk/libraries/libRaster/src/org/gvsig/raster/grid/render/Rendering.java
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import java.util.ArrayList; |
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import org.gvsig.raster.buffer.BufferFactory; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.datastruct.ViewPortData; |
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import org.gvsig.raster.grid.Grid; |
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import org.gvsig.raster.grid.GridTransparency; |
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import org.gvsig.raster.grid.filter.FilterListChangeEvent; |
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import org.gvsig.raster.grid.filter.FilterListChangeListener; |
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import org.gvsig.raster.grid.filter.RasterFilter; |
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import org.gvsig.raster.grid.filter.RasterFilterList; |
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import org.gvsig.raster.grid.filter.bands.ColorTableFilter; |
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import org.gvsig.raster.util.PropertyEvent; |
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import org.gvsig.raster.util.PropertyListener; |
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import org.gvsig.raster.util.RasterUtilities; |
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/** |
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* Esta clase se encarga de la gesti?n del dibujado de datos le?dos desde la capa |
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* |
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* @author Nacho Brodin (nachobrodin@gmail.com) |
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*/ |
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public class Rendering {
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public class Rendering implements PropertyListener, FilterListChangeListener {
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/** |
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* Grid para la gesti?n del buffer |
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*/ |
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private Grid grid = null; |
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private Grid grid = null;
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/** |
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* Fuente de datos para el renderizado |
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*/ |
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private BufferFactory bufferFactory = null; |
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private BufferFactory bufferFactory = null;
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/** |
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* Objeto sobre el cual se hace el renderizado |
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*/ |
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private Image geoImage = null; |
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private Image geoImage = null;
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/** |
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* N?mero de bandas a renderizar y en el orden que se har?. Esto es asignado |
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* por el usuario de la renderizaci?n. |
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*/ |
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private int[] renderBands = { 0, 1, 2 };
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private int[] renderBands = { 0, 1, 2 };
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/** |
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* Tiene el comportamiento cuando se tiene un raster con una. Dice si en las |
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* otras bandas a renderizar se replica la banda existente o se ponen a 0. |
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*/ |
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private boolean replicateBand = false; |
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private boolean replicateBand = false;
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private ImageDrawer drawer = null; |
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private ImageDrawer drawer = null;
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/** |
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* Ultima transparencia aplicada en la visualizaci?n que es obtenida desde el |
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* grid |
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*/ |
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private GridTransparency lastTransparency = null; |
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private GridTransparency lastTransparency = null;
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/** |
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* Lista de filtros aplicada en la renderizaci?n |
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*/ |
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private RasterFilterList filterList = null; |
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private RasterFilterList filterList = null;
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private IBuffer lastRenderBuffer = null; |
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private IBuffer lastRenderBuffer = null;
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/** |
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* Ancho y alto del objeto Image en una petici?n de dibujado a un raster |
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private double widthImage, heightImage; |
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private Point2D ulPxRequest, lrPxRequest; |
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/** |
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* Array de listeners que ser?n informados cuando cambia una propiedad en la visualizaci?n |
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*/ |
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private ArrayList visualPropertyListener = new ArrayList(); |
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/** |
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* Constructor |
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} |
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} |
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} |
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/** |
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* Asigna un listener a la lista que ser? informado cuando cambie una |
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* propiedad visual en la renderizaci?n. |
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* @param listener VisualPropertyListener |
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*/ |
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public void addVisualPropertyListener(VisualPropertyListener listener) {
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visualPropertyListener.add(listener); |
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} |
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/** |
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* M?todo llamado cuando hay un cambio en una propiedad de visualizaci?n |
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*/ |
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private void callVisualPropertyChanged(Object obj) {
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for (int i = 0; i < visualPropertyListener.size(); i++) {
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VisualPropertyEvent ev = new VisualPropertyEvent(obj); |
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((VisualPropertyListener)visualPropertyListener.get(i)).visualPropertyValueChanged(ev); |
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} |
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} |
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/** |
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* Dibuja el raster sobre el Graphics. Para ello debemos de pasar el viewPort que corresponde a la |
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double[] step = null; |
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if (bufferFactory != null) {
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if (lastTransparency == null) |
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if (lastTransparency == null) {
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lastTransparency = new GridTransparency(bufferFactory.getDataSource().getTransparencyFilesStatus()); |
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lastTransparency.addPropertyListener(this); |
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} |
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// Asignamos la banda de transparencia si existe esta |
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if (bufferFactory.getDataSource().getTransparencyFilesStatus().getAlphaBandNumber() != -1) {
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bufferFactory.setSupersamplingLoadingBuffer(false); // Desactivamos el supersampleo en la carga del buffer. |
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* @param renderBands: bandas y su posici?n |
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*/ |
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public void setRenderBands(int[] renderBands) {
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if( renderBands[0] != this.renderBands[0] || |
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renderBands[1] != this.renderBands[1] || |
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renderBands[2] != this.renderBands[2]) |
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callVisualPropertyChanged(renderBands); |
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this.renderBands = renderBands; |
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if (filterList != null) {
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for (int i = 0; i < filterList.lenght(); i++) |
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*/ |
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public void setLastTransparency(GridTransparency lastTransparency) {
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this.lastTransparency = lastTransparency; |
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this.lastTransparency.addPropertyListener(this); |
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if (getFilterList() != null) |
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getFilterList().addEnvParam("Transparency", lastTransparency);
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} |
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*/ |
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public void setFilterList(RasterFilterList filterList) {
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this.filterList = filterList; |
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this.filterList.addFilterListListener(this); |
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} |
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/** |
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public void setBufferFactory(BufferFactory bf) {
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this.bufferFactory = bf; |
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} |
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/** |
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* Evento activado cuando cambia una propiedad de transparencia. |
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*/ |
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public void actionValueChanged(PropertyEvent e) {
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callVisualPropertyChanged(new VisualPropertyEvent(e.getSource())); |
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} |
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/** |
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* Evento activado cuando cambia la lista de filtros. |
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*/ |
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public void filterListChanged(FilterListChangeEvent e) {
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callVisualPropertyChanged(new VisualPropertyEvent(e.getSource())); |
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} |
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} |
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