gvsig-raster / org.gvsig.raster.cache / trunk / org.gvsig.raster.cache / org.gvsig.raster.cache.lib.impl / src / main / java / org / gvsig / raster / cache / buffer / impl / RasterBuffer.java @ 1001
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package org.gvsig.raster.cache.buffer.impl; |
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import java.awt.geom.Rectangle2D; |
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import java.io.IOException; |
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import org.gvsig.raster.cache.buffer.Band; |
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import org.gvsig.raster.cache.buffer.Buffer; |
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import org.gvsig.raster.cache.buffer.BufferStats; |
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import org.gvsig.raster.cache.buffer.exception.BandNotCompatibleException; |
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import org.gvsig.raster.cache.buffer.exception.HistogramException; |
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import org.gvsig.raster.cache.buffer.exception.OperationNotSupportedException; |
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import org.gvsig.raster.cache.buffer.exception.WrongParameterException; |
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import org.gvsig.raster.cache.buffer.histogram.HistogramComputer; |
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import org.gvsig.raster.cache.buffer.impl.histogram.BufferHistogramComputer; |
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/**
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* Base class for a raster buffer.
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public abstract class RasterBuffer extends RasterBase implements Buffer { |
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private BufferStats statistics = null; |
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private Rectangle2D dataExtent = null; |
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private HistogramComputer histogramComputer = null; |
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private Object store = null; |
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/**
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* Valor con el que se rellena una banda no valida del buffer. Una banda no valida es la que
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* no tiene datos asignados y tampoco puede ser null. Todas las bandas no validas de un buffer
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* apuntan por referencia a la misma banda.
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*/
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protected double notValidValue = 0D; |
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/**
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* Sets size and position values
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* @param x
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* Upper left X position
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* @param y
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* Upper left X position
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* @param w
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* Width
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* @param h
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* Height
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*/
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public RasterBuffer(int x, int y, int w, int h) { |
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super(x, y, w, h);
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} |
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/**
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* Sets size and position values
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* @param x
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* Upper left X position
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* @param y
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* Upper left X position
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* @param w
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* Width
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* @param h
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* Height
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*/
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public RasterBuffer(int x, int y, int w, int h, int dataType, int nBands) { |
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super(x, y, w, h, dataType, nBands);
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} |
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public static int getBytesFromRasterBufType(int rasterBufType) { |
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switch (rasterBufType) {
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case TYPE_BYTE: return 1; |
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case TYPE_USHORT:
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case TYPE_SHORT: return 2; |
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case TYPE_INT:
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case TYPE_FLOAT:
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case TYPE_DOUBLE: return 8; |
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} |
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return 0; // TYPE_UNDEFINED |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#setStore(java.lang.Object)
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*/
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public void setStore(Object store) { |
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this.store = store;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#getStore()
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*/
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public Object getStore() { |
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return store;
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} |
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/**
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* Gets a bouding box of this buffer
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* @return
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*/
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public Rectangle2D getDataExtent() { |
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return dataExtent;
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} |
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/**
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* Sets a bounding box of this buffer
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* @param r
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*/
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public void setDataExtent(Rectangle2D r) { |
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this.dataExtent = r;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#addDrawableBands(int[])
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*/
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public void addDrawableBands(int[] bands) { |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#copyBand(int, org.gvsig.raster.cache.buffer.Band)
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*/
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public void copyBand(int iBand, Band band) throws BandNotCompatibleException, OperationNotSupportedException { |
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if(band.getDataType() != this.getDataType()) |
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throw new BandNotCompatibleException("Diferent data types"); |
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if(band.getWidth() != this.getWidth()) |
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throw new BandNotCompatibleException("Diferent sizes"); |
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if(band.getHeight() != this.getHeight()) |
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throw new BandNotCompatibleException("Diferent sizes"); |
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if(iBand < 0 || iBand > getBandCount() - 1) |
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throw new BandNotCompatibleException("Wrong position"); |
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switch (getDataType()) {
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case RasterBuffer.TYPE_BYTE:
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for (int row = 0; row < getHeight(); row++) |
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for (int col = 0; col < getWidth(); col++) |
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setElem(row, col, iBand, band.getElemByte(row, col)); |
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break;
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case RasterBuffer.TYPE_SHORT:
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for (int row = 0; row < getHeight(); row++) |
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for (int col = 0; col < getWidth(); col++) |
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setElem(row, col, iBand, band.getElemShort(row, col)); |
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break;
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case RasterBuffer.TYPE_INT:
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for (int row = 0; row < getHeight(); row++) |
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for (int col = 0; col < getWidth(); col++) |
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setElem(row, col, iBand, band.getElemInt(row, col)); |
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break;
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case RasterBuffer.TYPE_FLOAT:
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for (int row = 0; row < getHeight(); row++) |
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for (int col = 0; col < getWidth(); col++) |
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setElem(row, col, iBand, band.getElemFloat(row, col)); |
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break;
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case RasterBuffer.TYPE_DOUBLE:
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for (int row = 0; row < getHeight(); row++) |
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for (int col = 0; col < getWidth(); col++) |
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setElem(row, col, iBand, band.getElemDouble(row, col)); |
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break;
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} |
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} |
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/**
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* Cambia bandas de posici?n. Las posiciones deben existir como bandas del raster.
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* Cada elemento del array representa una banda existente en el buffer (de longitud
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* rasterBuf.length) y el valor contenido dentro la banda que le corresponde. Por ejemplo
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* si pasamos un array {1, 0, 3, 2} significa que el buffer tiene cuatro bandas y que
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* cambiamos la 0 por la 1 y la 2 por la 3. Un array {0, 1, 2, 3} en el mismo
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* caso no producir?a nig?n cambio.
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*
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* Si quisieramos asignar en un buffer monobanda su banda a la segunda posici?n habria
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* que insertar una vacia, por ejemplo con addBandFloat(0, null) se insertaria una
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* banda nula en la posici?n 0 y la banda que estaba en la 0 pasar?a a la segunda.
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* @throws WrongParameterException
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* @throws IOException
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*
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*/
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public void swapBands(int[] bandPosition) throws WrongParameterException, IOException { |
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if(bandPosition.length != getBandCount())
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throw new WrongParameterException("Number of elements not valid"); |
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for (int i = 0; i < bandPosition.length; i++) { |
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if(bandPosition[i] < 0 || bandPosition[i] > getBandCount()) |
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throw new WrongParameterException("Array not valid"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#swapBands(int, int)
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*/
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public void swapBands(int band1, int band2) throws WrongParameterException, IOException { |
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if(band1 < 0 || band1 > getBandCount() - 1 || band2 < 0 || band2 > getBandCount() - 1) |
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throw new WrongParameterException("Wrong band number"); |
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} |
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/**
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* Convierte un tipo de dato a cadena
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* @param type Tipo de dato
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* @return cadena que representa el tipo de dato
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*/
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public static String typesToString(int type) { |
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switch (type) {
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case RasterBuffer.TYPE_BYTE:
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return new String("Byte"); |
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case RasterBuffer.TYPE_DOUBLE:
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return new String("Double"); |
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case RasterBuffer.TYPE_FLOAT:
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return new String("Float"); |
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case RasterBuffer.TYPE_INT:
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return new String("Integer"); |
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case RasterBuffer.TYPE_USHORT:
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case RasterBuffer.TYPE_SHORT:
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return new String("Short"); |
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} |
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return null; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#isInside(int, int)
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*/
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public boolean isInside(int x, int y) { |
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if (x < 0 || y < 0 || x >= getWidth() || y >= getHeight()) |
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return false; |
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return true; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#getNotValidValue()
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*/
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public double getNotValidValue(){ |
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return notValidValue;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#setNotValidValue(double)
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*/
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public void setNotValidValue(double value){ |
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this.notValidValue = value;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#cloneBuffer()
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*/
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public abstract Buffer cloneBuffer(); |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#getAdjustedWindow(int, int, int)
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*/
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public Buffer getAdjustedWindow(int w, int h, int interpolationMethod) throws InterruptedException { |
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BufferInterpolationImpl interp = new BufferInterpolationImpl(this); |
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if (w == getWidth() && h == getHeight())
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return this; |
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Buffer rasterBuf = null; |
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switch (interpolationMethod) {
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case BufferInterpolationImpl.INTERPOLATION_NearestNeighbour:
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rasterBuf = interp.adjustRasterNearestNeighbourInterpolation(w, h); |
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break;
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case BufferInterpolationImpl.INTERPOLATION_Bilinear:
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rasterBuf = interp.adjustRasterBilinearInterpolation(w, h); |
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break;
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case BufferInterpolationImpl.INTERPOLATION_InverseDistance:
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rasterBuf = interp.adjustRasterInverseDistanceInterpolation(w, h); |
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break;
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case BufferInterpolationImpl.INTERPOLATION_Bicubic:
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rasterBuf = interp.adjustRasterBicubicSplineInterpolation(w, h); |
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break;
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case BufferInterpolationImpl.INTERPOLATION_BSpline:
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rasterBuf = interp.adjustRasterBSplineInterpolation(w, h); |
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break;
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} |
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if (rasterBuf != null) |
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return rasterBuf;
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else
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return this; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.Buffer#getStatistics()
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*/
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public BufferStats getStatistics() {
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if(statistics == null) |
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statistics = new BufferStatsImpl(this); |
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return statistics;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.cache.buffer.histogram.Histogramable#getHistogramComputer()
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*/
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public HistogramComputer getHistogramComputer() throws HistogramException, InterruptedException { |
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if(histogramComputer == null) |
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histogramComputer = new BufferHistogramComputer(this); |
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return histogramComputer;
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} |
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} |