DataBufferDouble.java
上传用户:btjssb159
上传日期:2018-01-04
资源大小:241k
文件大小:11k
- /*
- * Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * -Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * -Redistribution in binary form must reproduct the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of Sun Microsystems, Inc. or the names of contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
- * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
- * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
- * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
- * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
- * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
- * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
- * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
- * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- * You acknowledge that Software is not designed,licensed or intended for use in
- * the design, construction, operation or maintenance of any nuclear facility.
- */
- import java.awt.image.DataBuffer;
- /**
- * An extension of <code>DataBuffer</code> that stores data internally
- * in <code>double</code> form.
- *
- * @see java.awt.image.DataBuffer
- */
- public class DataBufferDouble extends DataBuffer {
- /** The array of data banks. */
- protected double bankdata[][];
- /** A reference to the default data bank. */
- protected double data[];
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with a specified size.
- *
- * @param size The number of elements in the <code>DataBuffer</code>.
- */
- public DataBufferDouble(int size) {
- super(TYPE_DOUBLE, size);
- data = new double[size];
- bankdata = new double[1][];
- bankdata[0] = data;
- }
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with a specified number of banks, all of which are of a
- * specified size.
- *
- * @param size The number of elements in each bank of the
- * <code>DataBuffer</code>.
- * @param numBanks The number of banks in the <code>DataBuffer</code>.
- */
- public DataBufferDouble(int size, int numBanks) {
- super(TYPE_DOUBLE, size, numBanks);
- bankdata = new double[numBanks][];
- for (int i= 0; i < numBanks; i++) {
- bankdata[i] = new double[size];
- }
- data = bankdata[0];
- }
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with the specified data array. Only the first
- * <code>size</code> elements are available for use by this
- * <code>DataBuffer</code>. The array must be large enough to
- * hold <code>size</code> elements.
- *
- * @param dataArray An array of <code>double</code>s to be used as the
- * first and only bank of this <code>DataBuffer</code>.
- * @param size The number of elements of the array to be used.
- */
- public DataBufferDouble(double dataArray[], int size) {
- super(TYPE_DOUBLE, size);
- if (dataArray.length < size)
- throw new RuntimeException(JaiI18N.getString("DataBuffer0"));
- data = dataArray;
- bankdata = new double[1][];
- bankdata[0] = data;
- }
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with the specified data array. Only the elements between
- * <code>offset</code> and <code>offset + size - 1</code> are
- * available for use by this <code>DataBuffer</code>. The array
- * must be large enough to hold <code>offset + size</code> elements.
- *
- * @param dataArray An array of <code>double</code>s to be used as the
- * first and only bank of this <code>DataBuffer</code>.
- * @param size The number of elements of the array to be used.
- * @param offset The offset of the first element of the array
- * that will be used.
- */
- public DataBufferDouble(double dataArray[], int size, int offset) {
- super(TYPE_DOUBLE, size, 1, offset);
- if (dataArray.length < size)
- throw new RuntimeException(JaiI18N.getString("DataBuffer1"));
- data = dataArray;
- bankdata = new double[1][];
- bankdata[0] = data;
- }
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with the specified data arrays. Only the first
- * <code>size</code> elements of each array are available for use
- * by this <code>DataBuffer</code>. The number of banks will be
- * equal <code>to dataArray.length</code>.
- *
- * @param dataArray An array of arrays of <code>double</code>s to be
- * used as the banks of this <code>DataBuffer</code>.
- * @param size The number of elements of each array to be used.
- */
- public DataBufferDouble(double dataArray[][], int size) {
- super(TYPE_DOUBLE, size, dataArray.length);
- bankdata = dataArray;
- data = bankdata[0];
- }
- /**
- * Constructs a <code>double</code>-based <code>DataBuffer</code>
- * with the specified data arrays, size, and per-bank offsets.
- * The number of banks is equal to dataArray.length. Each array
- * must be at least as large as <code>size plus the corresponding
- * offset. There must be an entry in the <code>offsets</code>
- * array for each data array.
- *
- * @param dataArray An array of arrays of <code>double</code>s to be
- * used as the banks of this <code>DataBuffer</code>.
- * @param size The number of elements of each array to be used.
- * @param offsets An array of integer offsets, one for each bank.
- */
- public DataBufferDouble(double dataArray[][], int size, int offsets[]) {
- super(TYPE_DOUBLE, size, dataArray.length, offsets);
- bankdata = dataArray;
- data = bankdata[0];
- }
- /** Returns the <code>double</code> data array of the default(first) bank. */
- public double[] getData() {
- return data;
- }
- /** Returns the data array for the specified bank. */
- public double[] getData(int bank) {
- return bankdata[bank];
- }
- /** Returns the data array for all banks. */
- public double[][] getBankData() {
- return bankdata;
- }
-
- /**
- * Returns the requested data array element from the first
- * (default) bank as an <code>int</code>.
- *
- * @param i The desired data array element.
- *
- * @return The data entry as an <code>int</code>.
- */
- public int getElem(int i) {
- return (int)(data[i+offset]);
- }
- /**
- * Returns the requested data array element from the specified
- * bank as an <code>int</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- *
- * @return The data entry as an <code>int</code>.
- */
- public int getElem(int bank, int i) {
- return (int)(bankdata[bank][i+offsets[bank]]);
- }
- /**
- * Sets the requested data array element in the first (default)
- * bank to the given <code>int</code>.
- *
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElem(int i, int val) {
- data[i+offset] = (double)val;
- }
- /**
- * Sets the requested data array element in the specified bank
- * to the given <code>int</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElem(int bank, int i, int val) {
- bankdata[bank][i+offsets[bank]] = (double)val;
- }
- /**
- * Returns the requested data array element from the first
- * (default) bank as a <code>float</code>.
- *
- * @param i The desired data array element.
- *
- * @return The data entry as a <code>float</code>.
- */
- public float getElemFloat(int i) {
- return (float)data[i+offset];
- }
-
- /**
- * Returns the requested data array element from the specified
- * bank as a <code>float</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- *
- * @return The data entry as a <code>float</code>.
- */
- public float getElemFloat(int bank, int i) {
- return (float)bankdata[bank][i+offsets[bank]];
- }
-
- /**
- * Sets the requested data array element in the first (default)
- * bank to the given <code>float</code>.
- *
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElemFloat(int i, float val) {
- data[i+offset] = (double)val;
- }
-
- /**
- * Sets the requested data array element in the specified bank to
- * the given <code>float</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElemFloat(int bank, int i, float val) {
- bankdata[bank][i+offsets[bank]] = (double)val;
- }
- /**
- * Returns the requested data array element from the first
- * (default) bank as a <code>double</code>.
- *
- * @param i The desired data array element.
- *
- * @return The data entry as a <code>double</code>.
- */
- public double getElemDouble(int i) {
- return data[i+offset];
- }
-
- /**
- * Returns the requested data array element from the specified
- * bank as a <code>double</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- *
- * @return The data entry as a <code>double</code>.
- */
- public double getElemDouble(int bank, int i) {
- return bankdata[bank][i+offsets[bank]];
- }
-
- /**
- * Sets the requested data array element in the first (default)
- * bank to the given <code>double</code>.
- *
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElemDouble(int i, double val) {
- data[i+offset] = val;
- }
-
- /**
- * Sets the requested data array element in the specified bank to
- * the given <code>double</code>.
- *
- * @param bank The bank number.
- * @param i The desired data array element.
- * @param val The value to be set.
- */
- public void setElemDouble(int bank, int i, double val) {
- bankdata[bank][i+offsets[bank]] = val;
- }
- }