samplemodel.java

JAVA基本类源代码,大家可以学习学习!

     * @param y 	The Y coordinate of the pixel location.
     * @param dArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified pixel.
     * @see #setPixel(int, int, double[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates are
     * not in bounds, or if dArray is too small to hold the output.
     */
    public double[] getPixel(int x, int y, double dArray[],
			     DataBuffer data) {

	double pixels[];

	if(dArray != null)
	    pixels = dArray;
	else
	    pixels = new double[numBands];

	for (int i=0; i<numBands; i++)
	    pixels[i] = getSampleDouble(x, y, i, data);

	return pixels;
    }

    /**
     * Returns all samples for a rectangle of pixels in an
     * int array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param iArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified region of pixels.
     * @see #setPixels(int, int, int, int, int[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates are
     * not in bounds, or if iArray is too small to hold the output.
     */
    public int[] getPixels(int x, int y, int w, int h,
                           int iArray[], DataBuffer data) {

	int pixels[];
	int Offset=0;

	if (iArray != null)
	    pixels = iArray;
	else
	    pixels = new int[numBands * w * h];

	for (int i=y; i<(h+y); i++) {
	    for (int j=x; j<(w+x); j++) {
		for(int k=0; k<numBands; k++) {
		    pixels[Offset++] = getSample(j, i, k, data);
		}
	    }
	}

	return pixels;
    }

    /**
     * Returns all samples for a rectangle of pixels in a float
     * array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param fArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified region of pixels.
     * @see #setPixels(int, int, int, int, float[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates are
     * not in bounds, or if fArray is too small to hold the output.
     */
    public float[] getPixels(int x, int y, int w, int h,
                             float fArray[], DataBuffer data) {

	float pixels[];
	int Offset = 0;

	if (fArray != null)
	    pixels = fArray;
	else
	    pixels = new float[numBands * w * h];

	for (int i=y; i<(h+y); i++) {
	    for(int j=x; j<(w+x); j++) {
		for(int k=0; k<numBands; k++) {
		    pixels[Offset++] = getSampleFloat(j, i, k, data);
		}
	    }
	}

	return pixels;
    }

    /**
     * Returns all samples for a rectangle of pixels in a double
     * array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param dArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified region of pixels.
     * @see #setPixels(int, int, int, int, double[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates are
     * not in bounds, or if dArray is too small to hold the output.
     */
    public double[] getPixels(int x, int y, int w, int h,
                              double dArray[], DataBuffer data) {
	double pixels[];
	int    Offset = 0;

	if (dArray != null)
	    pixels = dArray;
	else
	    pixels = new double[numBands * w * h];

        // Fix 4217412
	for (int i=y; i<(h+y); i++) {
	    for (int j=x; j<(w+x); j++) {
		for (int k=0; k<numBands; k++) {
		    pixels[Offset++] = getSampleDouble(j, i, k, data);
		}
	    }
	}

	return pixels;
    }


    /**
     * Returns the sample in a specified band for the pixel located
     * at (x,y) as an int.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the pixel location.
     * @param y 	The Y coordinate of the pixel location.
     * @param b 	The band to return.
     * @param data 	The DataBuffer containing the image data.
     * @return the sample in a specified band for the specified pixel.
     * @see #setSample(int, int, int, int, DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public abstract int getSample(int x, int y, int b, DataBuffer data);


    /**
     * Returns the sample in a specified band
     * for the pixel located at (x,y) as a float.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the pixel location.
     * @param y 	The Y coordinate of the pixel location.
     * @param b 	The band to return.
     * @param data 	The DataBuffer containing the image data.
     * @return the sample in a specified band for the specified pixel.
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public float getSampleFloat(int x, int y, int b, DataBuffer data) {

	float sample;
	sample = (float) getSample(x, y, b, data);
	return sample;
    }

    /**
     * Returns the sample in a specified band
     * for a pixel located at (x,y) as a double.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the pixel location.
     * @param y 	The Y coordinate of the pixel location.
     * @param b 	The band to return.
     * @param data 	The DataBuffer containing the image data.
     * @return the sample in a specified band for the specified pixel.
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds.
     */
    public double getSampleDouble(int x, int y, int b, DataBuffer data) {

	double sample;

	sample = (double) getSample(x, y, b, data);
	return sample;
    }

    /**
     * Returns the samples for a specified band for the specified rectangle
     * of pixels in an int array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param b 	The band to return.
     * @param iArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified band for the specified region
     *         of pixels.
     * @see #setSamples(int, int, int, int, int, int[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if iArray is too small to
     * hold the output.
     */
    public int[] getSamples(int x, int y, int w, int h, int b,
                            int iArray[], DataBuffer data) {
	int pixels[];
	int Offset=0;

	if (iArray != null)
	    pixels = iArray;
	else
	    pixels = new int[w * h];

	for(int i=y; i<(h+y); i++) {
	    for (int j=x; j<(w+x); j++) {
		pixels[Offset++] = getSample(j, i, b, data);
	    }
	}

	return pixels;
    }

    /**
     * Returns the samples for a specified band for the specified rectangle
     * of pixels in a float array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param b 	The band to return.
     * @param fArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified band for the specified region
     *         of pixels.
     * @see #setSamples(int, int, int, int, int, float[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if fArray is too small to
     * hold the output.
     */
    public float[] getSamples(int x, int y, int w, int h,
                              int b, float fArray[],
                              DataBuffer data) {
	float pixels[];
	int   Offset=0;

	if (fArray != null)
	    pixels = fArray;
	else
	    pixels = new float[w * h];

	for (int i=y; i<(h+y); i++) {
	    for (int j=x; j<(w+x); j++) {
		pixels[Offset++] = getSampleFloat(j, i, b, data);
	    }
	}

	return pixels;
    }

    /**
     * Returns the samples for a specified band for a specified rectangle
     * of pixels in a double array, one sample per array element.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the upper left pixel location.
     * @param y 	The Y coordinate of the upper left pixel location.
     * @param w 	The width of the pixel rectangle.
     * @param h 	The height of the pixel rectangle.
     * @param b 	The band to return.
     * @param dArray 	If non-null, returns the samples in this array.
     * @param data 	The DataBuffer containing the image data.
     * @return the samples for the specified band for the specified region
     *         of pixels.
     * @see #setSamples(int, int, int, int, int, double[], DataBuffer)
     *
     * @throws NullPointerException if data is null.
     * @throws ArrayIndexOutOfBoundsException if the coordinates or
     * the band index are not in bounds, or if dArray is too small to
     * hold the output.
     */
    public double[] getSamples(int x, int y, int w, int h,
                               int b, double dArray[],
                               DataBuffer data) {
	double pixels[];
	int    Offset=0;

	if (dArray != null)
	    pixels = dArray;
	else
	    pixels = new double[w * h];

	for (int i=y; i<(y+h); i++) {
	    for (int j=x; j<(x+w); j++) {
		pixels[Offset++] = getSampleDouble(j, i, b, data);
	    }
	}

	return pixels;
    }

    /**
     * Sets a pixel in 	the DataBuffer using an int array of samples for input.
     * ArrayIndexOutOfBoundsException may be thrown if the coordinates are
     * not in bounds.
     * @param x 	The X coordinate of the pixel location.
     * @param y 	The Y coordinate of the pixel location.
     * @param iArray 	The input samples in an int array.
     * @param data 	The DataBuffer containing the image data.
     * @see #getPixel(int, int, int[], DataBuffer)