DataBuffer and stores data internally
+ * in float form.
+ *
+ *
+ * Note that some implementations may function more efficiently
+ * if they can maintain control over how the data for an image is
+ * stored.
+ * For example, optimizations such as caching an image in video
+ * memory require that the implementation track all modifications
+ * to that data.
+ * Other implementations may operate better if they can store the
+ * data in locations other than a Java array.
+ * To maintain optimum compatibility with various optimizations
+ * it is best to avoid constructors and methods which expose the
+ * underlying storage as a Java array as noted below in the
+ * documentation for those methods.
+ *
+ *
+ * @since 1.4
+ */
+
+public final class DataBufferFloat extends DataBuffer {
+
+ /** The array of data banks. */
+ float bankdata[][];
+
+ /** A reference to the default data bank. */
+ float data[];
+
+ /**
+ * Constructs a float-based DataBuffer
+ * with a specified size.
+ *
+ * @param size The number of elements in the DataBuffer.
+ */
+ public DataBufferFloat(int size) {
+ super(STABLE, TYPE_FLOAT, size);
+ data = new float[size];
+ bankdata = new float[1][];
+ bankdata[0] = data;
+ }
+
+ /**
+ * Constructs a float-based DataBuffer
+ * 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
+ * DataBuffer.
+ * @param numBanks The number of banks in the
+ * DataBuffer.
+ */
+ public DataBufferFloat(int size, int numBanks) {
+ super(STABLE, TYPE_FLOAT, size, numBanks);
+ bankdata = new float[numBanks][];
+ for (int i= 0; i < numBanks; i++) {
+ bankdata[i] = new float[size];
+ }
+ data = bankdata[0];
+ }
+
+ /**
+ * Constructs a float-based DataBuffer
+ * with the specified data array. Only the first
+ * size elements are available for use by this
+ * DataBuffer. The array must be large enough to
+ * hold size elements.
+ *
+ * Note that {@code DataBuffer} objects created by this constructor
+ * may be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @param dataArray An array of floats to be used as the
+ * first and only bank of this DataBuffer.
+ * @param size The number of elements of the array to be used.
+ */
+ public DataBufferFloat(float dataArray[], int size) {
+ super(UNTRACKABLE, TYPE_FLOAT, size);
+ data = dataArray;
+ bankdata = new float[1][];
+ bankdata[0] = data;
+ }
+
+ /**
+ * Constructs a float-based DataBuffer
+ * with the specified data array. Only the elements between
+ * offset and offset + size - 1 are
+ * available for use by this DataBuffer. The array
+ * must be large enough to hold offset + size
+ * elements.
+ *
+ * Note that {@code DataBuffer} objects created by this constructor
+ * may be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @param dataArray An array of floats to be used as the
+ * first and only bank of this DataBuffer.
+ * @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 DataBufferFloat(float dataArray[], int size, int offset) {
+ super(UNTRACKABLE, TYPE_FLOAT, size, 1, offset);
+ data = dataArray;
+ bankdata = new float[1][];
+ bankdata[0] = data;
+ }
+
+ /**
+ * Constructs a float-based DataBuffer
+ * with the specified data arrays. Only the first
+ * size elements of each array are available for use
+ * by this DataBuffer. The number of banks will be
+ * equal to dataArray.length.
+ *
+ * Note that {@code DataBuffer} objects created by this constructor
+ * may be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @param dataArray An array of arrays of floats to be
+ * used as the banks of this DataBuffer.
+ * @param size The number of elements of each array to be used.
+ */
+ public DataBufferFloat(float dataArray[][], int size) {
+ super(UNTRACKABLE, TYPE_FLOAT, size, dataArray.length);
+ bankdata = (float[][]) dataArray.clone();
+ data = bankdata[0];
+ }
+
+ /**
+ * Constructs a float-based DataBuffer
+ * 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 size plus the
+ * corresponding offset. There must be an entry in the offsets
+ * array for each data array.
+ *
+ * Note that {@code DataBuffer} objects created by this constructor
+ * may be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @param dataArray An array of arrays of floats to be
+ * used as the banks of this DataBuffer.
+ * @param size The number of elements of each array to be used.
+ * @param offsets An array of integer offsets, one for each bank.
+ */
+ public DataBufferFloat(float dataArray[][], int size, int offsets[]) {
+ super(UNTRACKABLE, TYPE_FLOAT, size,dataArray.length, offsets);
+ bankdata = (float[][]) dataArray.clone();
+ data = bankdata[0];
+ }
+
+ /**
+ * Returns the default (first) float data array.
+ *
+ * Note that calling this method may cause this {@code DataBuffer} + * object to be incompatible with performance + * optimizations used by some implementations (such as caching + * an associated image in video memory). + * + * @return the first float data array. + */ + public float[] getData() { + theTrackable.setUntrackable(); + return data; + } + + /** + * Returns the data array for the specified bank. + *
+ * Note that calling this method may cause this {@code DataBuffer}
+ * object to be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @param bank the data array
+ * @return the data array specified by bank.
+ */
+ public float[] getData(int bank) {
+ theTrackable.setUntrackable();
+ return bankdata[bank];
+ }
+
+ /**
+ * Returns the data array for all banks.
+ *
+ * Note that calling this method may cause this {@code DataBuffer}
+ * object to be incompatible with performance
+ * optimizations used by some implementations (such as caching
+ * an associated image in video memory).
+ *
+ * @return all data arrays for this data buffer.
+ */
+ public float[][] getBankData() {
+ theTrackable.setUntrackable();
+ return (float[][]) bankdata.clone();
+ }
+
+ /**
+ * Returns the requested data array element from the first
+ * (default) bank as an int.
+ *
+ * @param i The desired data array element.
+ *
+ * @return The data entry as an int.
+ * @see #setElem(int, int)
+ * @see #setElem(int, int, int)
+ */
+ public int getElem(int i) {
+ return (int)(data[i+offset]);
+ }
+
+ /**
+ * Returns the requested data array element from the specified
+ * bank as an int.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ *
+ * @return The data entry as an int.
+ * @see #setElem(int, int)
+ * @see #setElem(int, int, int)
+ */
+ 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 int.
+ *
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElem(int)
+ * @see #getElem(int, int)
+ */
+ public void setElem(int i, int val) {
+ data[i+offset] = (float)val;
+ theTrackable.markDirty();
+ }
+
+ /**
+ * Sets the requested data array element in the specified bank to
+ * the given int.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElem(int)
+ * @see #getElem(int, int)
+ */
+ public void setElem(int bank, int i, int val) {
+ bankdata[bank][i+offsets[bank]] = (float)val;
+ theTrackable.markDirty();
+ }
+
+ /**
+ * Returns the requested data array element from the first
+ * (default) bank as a float.
+ *
+ * @param i The desired data array element.
+ *
+ * @return The data entry as a float.
+ * @see #setElemFloat(int, float)
+ * @see #setElemFloat(int, int, float)
+ */
+ public float getElemFloat(int i) {
+ return data[i+offset];
+ }
+
+ /**
+ * Returns the requested data array element from the specified
+ * bank as a float.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ *
+ * @return The data entry as a float.
+ * @see #setElemFloat(int, float)
+ * @see #setElemFloat(int, int, float)
+ */
+ public float getElemFloat(int bank, int i) {
+ return bankdata[bank][i+offsets[bank]];
+ }
+
+ /**
+ * Sets the requested data array element in the first (default)
+ * bank to the given float.
+ *
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElemFloat(int)
+ * @see #getElemFloat(int, int)
+ */
+ public void setElemFloat(int i, float val) {
+ data[i+offset] = val;
+ theTrackable.markDirty();
+ }
+
+ /**
+ * Sets the requested data array element in the specified bank to
+ * the given float.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElemFloat(int)
+ * @see #getElemFloat(int, int)
+ */
+ public void setElemFloat(int bank, int i, float val) {
+ bankdata[bank][i+offsets[bank]] = val;
+ theTrackable.markDirty();
+ }
+
+ /**
+ * Returns the requested data array element from the first
+ * (default) bank as a double.
+ *
+ * @param i The desired data array element.
+ *
+ * @return The data entry as a double.
+ * @see #setElemDouble(int, double)
+ * @see #setElemDouble(int, int, double)
+ */
+ public double getElemDouble(int i) {
+ return (double)data[i+offset];
+ }
+
+ /**
+ * Returns the requested data array element from the specified
+ * bank as a double.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ *
+ * @return The data entry as a double.
+ * @see #setElemDouble(int, double)
+ * @see #setElemDouble(int, int, double)
+ */
+ public double getElemDouble(int bank, int i) {
+ return (double)bankdata[bank][i+offsets[bank]];
+ }
+
+ /**
+ * Sets the requested data array element in the first (default)
+ * bank to the given double.
+ *
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElemDouble(int)
+ * @see #getElemDouble(int, int)
+ */
+ public void setElemDouble(int i, double val) {
+ data[i+offset] = (float)val;
+ theTrackable.markDirty();
+ }
+
+ /**
+ * Sets the requested data array element in the specified bank to
+ * the given double.
+ *
+ * @param bank The bank number.
+ * @param i The desired data array element.
+ * @param val The value to be set.
+ * @see #getElemDouble(int)
+ * @see #getElemDouble(int, int)
+ */
+ public void setElemDouble(int bank, int i, double val) {
+ bankdata[bank][i+offsets[bank]] = (float)val;
+ theTrackable.markDirty();
+ }
+}