Java Code Examples for java.awt.image.Raster#getHeight()

/**
 * Took this cacheRaster code from GradientPaint. It appears to recycle
 * rasters for use by any other instance, as long as they are sufficiently
 * large.
 */
private static synchronized Raster getCachedRaster(ColorModel cm,
                                                   int w, int h)
{
    if (cm == cachedModel) {
        if (cached != null) {
            Raster ras = (Raster) cached.get();
            if (ras != null &&
                ras.getWidth() >= w &&
                ras.getHeight() >= h)
            {
                cached = null;
                return ras;
            }
        }
    }
    return cm.createCompatibleWritableRaster(w, h);
}
 

/** Set source */
private void setDefaults(Raster raster) {
    // override the params in the super class
    setSuperProperties();

    if (raster != null) {
        this.raster = raster;
        tileGridXOffset = raster.getMinX();
        tileGridYOffset = raster.getMinY();
        tileWidth = raster.getWidth();
        tileHeight = raster.getHeight();
        tilingSet = true;

        numTiles = 1;
        numComponents = raster.getSampleModel().getNumBands();
    }
    setDefaults();
}
 

static synchronized void putCachedRaster(ColorModel cm, Raster ras) {
    if (cached != null) {
        Raster cras = (Raster) cached.get();
        if (cras != null) {
            int cw = cras.getWidth();
            int ch = cras.getHeight();
            int iw = ras.getWidth();
            int ih = ras.getHeight();
            if (cw >= iw && ch >= ih) {
                return;
            }
            if (cw * ch >= iw * ih) {
                return;
            }
        }
    }
    cachedModel = cm;
    cached = new WeakReference<>(ras);
}
 

/**
 * Encodes and writes raster data, together with alpha (transparency) data, as a 32-bit bitmap.
 * @param raster the source raster data
 * @param alpha the source alpha data
 * @param out the output to which the bitmap will be written
 * @throws java.io.IOException if an error occurs
 */
public static void write32(Raster raster, Raster alpha, net.sf.image4j.io.LittleEndianOutputStream out) throws IOException {
  
  int width = raster.getWidth();
  int height = raster.getHeight();
  
  // write lines
  for (int y = height - 1; y >= 0; y--) {
    
    // write pixel data for each line
    for (int x = 0; x < width; x++) {
      
      // get RGBA values
      int r = raster.getSample(x, y, 0);
      int g = raster.getSample(x, y, 1);
      int b = raster.getSample(x, y, 2);
      int a = alpha.getSample(x, y, 0);
      
      // write RGBA values
      out.writeByte(b);
      out.writeByte(g);
      out.writeByte(r);
      out.writeByte(a);
    }
  }
}
 

/**
 * Create datasets from a Raster
 * @param r raster
 * @param data array to output datasets
 * @param dtype dataset type
 */
static public void createDatasets(Raster r, Dataset[] data, final int dtype) {
	final int bands = data.length;
	final int height = r.getHeight();
	final int width = r.getWidth();
	Dataset tmp;

	for (int i = 0; i < bands; i++) {
		if (dtype == Dataset.FLOAT32) {
			tmp =  DatasetFactory.createFromObject(r.getSamples(0, 0, width, height, i, (float[]) null), height, width);
		} else if (dtype == Dataset.FLOAT64) {
			tmp = DatasetFactory.createFromObject(r.getSamples(0, 0, width, height, i, (double[]) null), height, width);
		} else if (dtype == Dataset.INT32) {
			tmp = DatasetFactory.createFromObject(r.getSamples(0, 0, width, height, i, (int[]) null), height, width);
		} else {
			tmp = DatasetFactory.createFromObject(dtype, r.getSamples(0, 0, width, height, i, (int[]) null), height, width);
		}
		data[i] = tmp;
	}
}
 

/**
 * Stores the Raster data at the specified location.
 * An ArrayIndexOutOfBounds exception will be thrown at runtime
 * if the pixel coordinates are out of bounds.
 * @param x          The X coordinate of the pixel location.
 * @param y          The Y coordinate of the pixel location.
 * @param inRaster   Raster of data to place at x,y location.
 */
public void setDataElements(int x, int y, Raster inRaster) {
    int srcOffX = inRaster.getMinX();
    int srcOffY = inRaster.getMinY();
    int dstOffX = x + srcOffX;
    int dstOffY = y + srcOffY;
    int width  = inRaster.getWidth();
    int height = inRaster.getHeight();
    if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
        (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
        throw new ArrayIndexOutOfBoundsException
            ("Coordinate out of bounds!");
    }

    setDataElements(dstOffX, dstOffY, srcOffX, srcOffY,
                    width, height, inRaster);
}
 

/**
 * Took this cacheRaster code from GradientPaint. It appears to recycle
 * rasters for use by any other instance, as long as they are sufficiently
 * large.
 */
private static synchronized void putCachedRaster(ColorModel cm,
                                                 Raster ras)
{
    if (cached != null) {
        Raster cras = (Raster) cached.get();
        if (cras != null) {
            int cw = cras.getWidth();
            int ch = cras.getHeight();
            int iw = ras.getWidth();
            int ih = ras.getHeight();
            if (cw >= iw && ch >= ih) {
                return;
            }
            if (cw * ch >= iw * ih) {
                return;
            }
        }
    }
    cachedModel = cm;
    cached = new WeakReference<Raster>(ras);
}
 

public void setRect(int dx, int dy, Raster srcRaster) {
    if (!(srcRaster instanceof ByteInterleavedRaster)) {
        super.setRect(dx, dy, srcRaster);
        return;
    }

    int width  = srcRaster.getWidth();
    int height = srcRaster.getHeight();
    int srcOffX = srcRaster.getMinX();
    int srcOffY = srcRaster.getMinY();
    int dstOffX = dx+srcOffX;
    int dstOffY = dy+srcOffY;

    // Clip to this raster
    if (dstOffX < this.minX) {
        int skipX = minX - dstOffX;
        width -= skipX;
        srcOffX += skipX;
        dstOffX = this.minX;
    }
    if (dstOffY < this.minY) {
        int skipY = this.minY - dstOffY;
        height -= skipY;
        srcOffY += skipY;
        dstOffY = this.minY;
    }
    if (dstOffX+width > this.maxX) {
        width = this.maxX - dstOffX;
    }
    if (dstOffY+height > this.maxY) {
        height = this.maxY - dstOffY;
    }

    setDataElements(dstOffX, dstOffY,
                    srcOffX, srcOffY,
                    width, height, srcRaster);
}
 

static synchronized Raster getCachedRaster(ColorModel cm, int w, int h) {
    if (cm == cachedModel) {
        if (cached != null) {
            Raster ras = (Raster) cached.get();
            if (ras != null &&
                ras.getWidth() >= w &&
                ras.getHeight() >= h)
            {
                cached = null;
                return ras;
            }
        }
    }
    return cm.createCompatibleWritableRaster(w, h);
}
 

/**
 * Stores the Raster data at the specified location.
 * An ArrayIndexOutOfBounds exception will be thrown at runtime
 * if the pixel coordinates are out of bounds.
 * @param x          The X coordinate of the pixel location.
 * @param y          The Y coordinate of the pixel location.
 * @param inRaster   Raster of data to place at x,y location.
 */
public void setDataElements(int x, int y, Raster inRaster) {
    int dstOffX = x + inRaster.getMinX();
    int dstOffY = y + inRaster.getMinY();
    int width  = inRaster.getWidth();
    int height = inRaster.getHeight();
    if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
        (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
        throw new ArrayIndexOutOfBoundsException
            ("Coordinate out of bounds!");
    }

    setDataElements(dstOffX, dstOffY, width, height, inRaster);
}
 

private BufferedImage toGrayScale (Raster in, PixelCorrection c, 
    boolean invertColors, double lowerBound, double upperBound)
 {
    double offset = - lowerBound;
    double scaleFactor = 256. / (upperBound - lowerBound);
    int width = in.getWidth();
    int height = in.getHeight();

    // generate
    BufferedImage out = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    for(int j = 0; j < height; j++)
    {
       for(int i = 0; i < width; i++)
       {
          int pixel = checkAndApplyCorrection(in.getSample(i, j, 0), c);
          if(pixel == c.nodata)
          {
             if(invertColors)
                out.setRGB(i, j, new Color(255, 255, 255).getRGB());
             else
                out.setRGB(i, j, new Color(0, 0, 0).getRGB());
             continue;
         }
         
         double normalized = (pixel + offset)*scaleFactor;
         int gray = (int)(Math.max(0, Math.min(255, normalized)));
         if(invertColors)
            gray = 255 - gray;
         out.setRGB(i, j, new Color(gray, gray, gray).getRGB());
       }
    }
    return out;
}
 

/**
 * Stores the Raster data at the specified location.
 * An ArrayIndexOutOfBounds exception will be thrown at runtime
 * if the pixel coordinates are out of bounds.
 * @param x          The X coordinate of the pixel location.
 * @param y          The Y coordinate of the pixel location.
 * @param inRaster   Raster of data to place at x,y location.
 */
public void setDataElements(int x, int y, Raster inRaster) {
    int dstOffX = x + inRaster.getMinX();
    int dstOffY = y + inRaster.getMinY();
    int width  = inRaster.getWidth();
    int height = inRaster.getHeight();
    if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
        (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
        throw new ArrayIndexOutOfBoundsException
            ("Coordinate out of bounds!");
    }

    setDataElements(dstOffX, dstOffY, width, height, inRaster);
}
 

/**
 * Stores the Raster data at the specified location.
 * An ArrayIndexOutOfBounds exception will be thrown at runtime
 * if the pixel coordinates are out of bounds.
 * @param x          The X coordinate of the pixel location.
 * @param y          The Y coordinate of the pixel location.
 * @param inRaster   Raster of data to place at x,y location.
 */
public void setDataElements(int x, int y, Raster inRaster) {
    int dstOffX = x + inRaster.getMinX();
    int dstOffY = y + inRaster.getMinY();
    int width  = inRaster.getWidth();
    int height = inRaster.getHeight();
    if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
        (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
        throw new ArrayIndexOutOfBoundsException
            ("Coordinate out of bounds!");
    }

    setDataElements(dstOffX, dstOffY, width, height, inRaster);
}
 

/**
 * Stores the Raster data at the specified location.
 * An ArrayIndexOutOfBounds exception will be thrown at runtime
 * if the pixel coordinates are out of bounds.
 * @param x          The X coordinate of the pixel location.
 * @param y          The Y coordinate of the pixel location.
 * @param inRaster   Raster of data to place at x,y location.
 */
public void setDataElements(int x, int y, Raster inRaster) {
    int dstOffX = x + inRaster.getMinX();
    int dstOffY = y + inRaster.getMinY();
    int width  = inRaster.getWidth();
    int height = inRaster.getHeight();
    if ((dstOffX < this.minX) || (dstOffY < this.minY) ||
        (dstOffX + width > this.maxX) || (dstOffY + height > this.maxY)) {
        throw new ArrayIndexOutOfBoundsException
            ("Coordinate out of bounds!");
    }

    setDataElements(dstOffX, dstOffY, width, height, inRaster);
}
 

static synchronized Raster getCachedRaster(ColorModel cm, int w, int h) {
    if (cm == cachedModel) {
        if (cached != null) {
            Raster ras = (Raster) cached.get();
            if (ras != null &&
                ras.getWidth() >= w &&
                ras.getHeight() >= h)
            {
                cached = null;
                return ras;
            }
        }
    }
    return cm.createCompatibleWritableRaster(w, h);
}
 

public void compose(Raster src, Raster dstIn, WritableRaster dstOut) {
    int w = src.getWidth();
    int h = src.getHeight();

    DataBufferInt srcDB = (DataBufferInt) src.getDataBuffer();
    DataBufferInt dstOutDB = (DataBufferInt) dstOut.getDataBuffer();
    int srcRGB[] = srcDB.getBankData()[0];
    int dstOutRGB[] = dstOutDB.getBankData()[0];
    int srcOffset = srcDB.getOffset();
    int dstOutOffset = dstOutDB.getOffset();
    int srcScanStride = ((SinglePixelPackedSampleModel) src.getSampleModel()).getScanlineStride();
    int dstOutScanStride = ((SinglePixelPackedSampleModel) dstOut.getSampleModel()).getScanlineStride();
    int srcAdjust = srcScanStride - w;
    int dstOutAdjust = dstOutScanStride - w;

    int si = srcOffset;
    int doi = dstOutOffset;

    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            dstOutRGB[doi] = srcRGB[si] ^ 0x00ffffff;
            si++;
            doi++;
        }

        si += srcAdjust;
        doi += dstOutAdjust;
    }
}
 

/**
 * Compose src onto dst using the alpha of sel to interpolate between the two.
 * I can't think of a way to do this using AlphaComposite.
    * @param src the source raster
    * @param dst the destination raster
    * @param sel the mask raster
 */
public static void composeThroughMask(Raster src, WritableRaster dst, Raster sel) {
	int x = src.getMinX();
	int y = src.getMinY();
	int w = src.getWidth();
	int h = src.getHeight();

	int srcRGB[] = null;
	int selRGB[] = null;
	int dstRGB[] = null;

	for ( int i = 0; i < h; i++ ) {
		srcRGB = src.getPixels(x, y, w, 1, srcRGB);
		selRGB = sel.getPixels(x, y, w, 1, selRGB);
		dstRGB = dst.getPixels(x, y, w, 1, dstRGB);

		int k = x;
		for ( int j = 0; j < w; j++ ) {
			int sr = srcRGB[k];
			int dir = dstRGB[k];
			int sg = srcRGB[k+1];
			int dig = dstRGB[k+1];
			int sb = srcRGB[k+2];
			int dib = dstRGB[k+2];
			int sa = srcRGB[k+3];
			int dia = dstRGB[k+3];

			float a = selRGB[k+3]/255f;
			float ac = 1-a;

			dstRGB[k] = (int)(a*sr + ac*dir); 
			dstRGB[k+1] = (int)(a*sg + ac*dig); 
			dstRGB[k+2] = (int)(a*sb + ac*dib); 
			dstRGB[k+3] = (int)(a*sa + ac*dia);
			k += 4;
		}

		dst.setPixels(x, y, w, 1, dstRGB);
		y++;
	}
}
 

/**
 * The runnable method for this class. This will produce an image using
 * the current RenderableImage and RenderContext and send it to all the
 * ImageConsumer currently registered with this class.
 */
public void run() {
    // First get the rendered image
    RenderedImage rdrdImage;
    if (rc != null) {
        rdrdImage = rdblImage.createRendering(rc);
    } else {
        rdrdImage = rdblImage.createDefaultRendering();
    }

    // And its ColorModel
    ColorModel colorModel = rdrdImage.getColorModel();
    Raster raster = rdrdImage.getData();
    SampleModel sampleModel = raster.getSampleModel();
    DataBuffer dataBuffer = raster.getDataBuffer();

    if (colorModel == null) {
        colorModel = ColorModel.getRGBdefault();
    }
    int minX = raster.getMinX();
    int minY = raster.getMinY();
    int width = raster.getWidth();
    int height = raster.getHeight();

    Enumeration<ImageConsumer> icList;
    ImageConsumer ic;
    // Set up the ImageConsumers
    icList = ics.elements();
    while (icList.hasMoreElements()) {
        ic = icList.nextElement();
        ic.setDimensions(width,height);
        ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT |
                    ImageConsumer.COMPLETESCANLINES |
                    ImageConsumer.SINGLEPASS |
                    ImageConsumer.SINGLEFRAME);
    }

    // Get RGB pixels from the raster scanline by scanline and
    // send to consumers.
    int pix[] = new int[width];
    int i,j;
    int numBands = sampleModel.getNumBands();
    int tmpPixel[] = new int[numBands];
    for (j = 0; j < height; j++) {
        for(i = 0; i < width; i++) {
            sampleModel.getPixel(i, j, tmpPixel, dataBuffer);
            pix[i] = colorModel.getDataElement(tmpPixel, 0);
        }
        // Now send the scanline to the Consumers
        icList = ics.elements();
        while (icList.hasMoreElements()) {
            ic = icList.nextElement();
            ic.setPixels(0, j, width, 1, colorModel, pix, 0, width);
        }
    }

    // Now tell the consumers we're done.
    icList = ics.elements();
    while (icList.hasMoreElements()) {
        ic = icList.nextElement();
        ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
    }
}
 

/**
 * Copies pixels from Raster srcRaster to this WritableRaster.
 * For each (x, y) address in srcRaster, the corresponding pixel
 * is copied to address (x+dx, y+dy) in this WritableRaster,
 * unless (x+dx, y+dy) falls outside the bounds of this raster.
 * srcRaster must have the same number of bands as this WritableRaster.
 * The copy is a simple copy of source samples to the corresponding
 * destination samples.  For details, see
 * {@link WritableRaster#setRect(Raster)}.
 *
 * @param dx        The X translation factor from src space to dst space
 *                  of the copy.
 * @param dy        The Y translation factor from src space to dst space
 *                  of the copy.
 * @param srcRaster The Raster from which to copy pixels.
 */
public void setRect(int dx, int dy, Raster srcRaster) {
    // Check if we can use fast code
    if (!(srcRaster instanceof BytePackedRaster) ||
        ((BytePackedRaster)srcRaster).pixelBitStride != pixelBitStride) {
        super.setRect(dx, dy, srcRaster);
        return;
    }

    int width  = srcRaster.getWidth();
    int height = srcRaster.getHeight();
    int srcOffX = srcRaster.getMinX();
    int srcOffY = srcRaster.getMinY();
    int dstOffX = dx+srcOffX;
    int dstOffY = dy+srcOffY;

    // Clip to this raster
    if (dstOffX < this.minX) {
        int skipX = this.minX - dstOffX;
        width -= skipX;
        srcOffX += skipX;
        dstOffX = this.minX;
    }
    if (dstOffY < this.minY) {
        int skipY = this.minY - dstOffY;
        height -= skipY;
        srcOffY += skipY;
        dstOffY = this.minY;
    }
    if (dstOffX+width > this.maxX) {
        width = this.maxX - dstOffX;
    }
    if (dstOffY+height > this.maxY) {
        height = this.maxY - dstOffY;
    }

    setDataElements(dstOffX, dstOffY,
                    srcOffX, srcOffY,
                    width, height,
                    (BytePackedRaster)srcRaster);
}
 

/**
 * Copies pixels from Raster srcRaster to this WritableRaster.
 * For each (x, y) address in srcRaster, the corresponding pixel
 * is copied to address (x+dx, y+dy) in this WritableRaster,
 * unless (x+dx, y+dy) falls outside the bounds of this raster.
 * srcRaster must have the same number of bands as this WritableRaster.
 * The copy is a simple copy of source samples to the corresponding
 * destination samples.  For details, see
 * {@link WritableRaster#setRect(Raster)}.
 *
 * @param dx        The X translation factor from src space to dst space
 *                  of the copy.
 * @param dy        The Y translation factor from src space to dst space
 *                  of the copy.
 * @param srcRaster The Raster from which to copy pixels.
 */
public void setRect(int dx, int dy, Raster srcRaster) {
    // Check if we can use fast code
    if (!(srcRaster instanceof BytePackedRaster) ||
        ((BytePackedRaster)srcRaster).pixelBitStride != pixelBitStride) {
        super.setRect(dx, dy, srcRaster);
        return;
    }

    int width  = srcRaster.getWidth();
    int height = srcRaster.getHeight();
    int srcOffX = srcRaster.getMinX();
    int srcOffY = srcRaster.getMinY();
    int dstOffX = dx+srcOffX;
    int dstOffY = dy+srcOffY;

    // Clip to this raster
    if (dstOffX < this.minX) {
        int skipX = this.minX - dstOffX;
        width -= skipX;
        srcOffX += skipX;
        dstOffX = this.minX;
    }
    if (dstOffY < this.minY) {
        int skipY = this.minY - dstOffY;
        height -= skipY;
        srcOffY += skipY;
        dstOffY = this.minY;
    }
    if (dstOffX+width > this.maxX) {
        width = this.maxX - dstOffX;
    }
    if (dstOffY+height > this.maxY) {
        height = this.maxY - dstOffY;
    }

    setDataElements(dstOffX, dstOffY,
                    srcOffX, srcOffY,
                    width, height,
                    (BytePackedRaster)srcRaster);
}