void createImage() {
if (imageSource == null) {
rgbCM = new DirectColorModel(32, 0xff0000, 0xff00, 0xff);
imageSource = new MemoryImageSource(width, height, rgbCM, rgbPixels, 0, width);
imageSource.setAnimated(true);
imageSource.setFullBufferUpdates(true);
awtImage = Toolkit.getDefaultToolkit().createImage(imageSource);
newPixels = false;
} else if (newPixels) {
imageSource.newPixels(rgbPixels, rgbCM, 0, width);
newPixels = false;
} else imageSource.newPixels();
}
/**
* Changes to a new int array to hold the pixels for this image. If the animation flag has been
* turned on through the setAnimated() method, then the new pixels will be immediately delivered
* to any ImageConsumers that are currently interested in the data for this image.
*
* @param newpix the new pixel array
* @param newmodel the specified <code>ColorModel</code>
* @param offset the offset into the array
* @param scansize the distance from one row of pixels to the next in the array
* @see #newPixels(int, int, int, int, boolean)
* @see #setAnimated
*/
public synchronized void newPixels(int[] newpix, ColorModel newmodel, int offset, int scansize) {
this.pixels = newpix;
this.model = newmodel;
this.pixeloffset = offset;
this.pixelscan = scansize;
newPixels();
}
public void putRegion(
int viewWidth,
int viewHeight,
int regWidth,
int regHeight,
int regOffX,
int regOffY,
int[] regBuffer) {
if (image == null) {
setPreferredSize(new Dimension(viewWidth, viewHeight));
imageBuffer = new int[viewWidth * viewHeight];
imageSource = new MemoryImageSource(viewWidth, viewHeight, imageBuffer, 0, viewWidth);
imageSource.setAnimated(true);
image = createImage(imageSource);
}
int destIndex = regOffX + regOffY * viewWidth;
int srcIndex = 0;
int extraRowGap = viewWidth - regWidth;
for (int j = 0; j < regHeight; j++, destIndex += extraRowGap)
for (int i = 0; i < regWidth; i++, srcIndex++, destIndex++)
imageBuffer[destIndex] = regBuffer[srcIndex];
imageSource.newPixels(regOffX, regOffY, regWidth, regHeight);
repaint(regOffX, regOffY, regWidth, regHeight);
}
public void notifyMoreDataReady(float[] bins) { // an array of floats
if (recursion) System.err.println(" RECURSION ");
nBins = bins.length;
if (nBins == 0) return;
recursion = true;
if (size == null || nBins != size.height || nChunks != size.width) // || this is the or operator
createGraphics(); // Returns a Graphics2D object for rendering into the specified
// BufferedImage.
int width = size.width;
for (int i = 0;
i < nBins;
i++) { // this is recursing over all the rows (nbins is the number of rows)
int bin = nBins - i - 1; // I think this makes it start from the top
float val = mapper.eval(bins[bin]); //
if (val < 0) val = 0.0f;
if (val > 1.0) // I think this next section colours the pixels in the spectrum
val = 1.0f; // display
int c_r = (int) (255 * val);
int c_g = c_r;
int c_b = 255 - c_r;
int color =
(c_b)
+ (c_g << 8)
+ (c_r << 16)
+ (0xFF
<< 24); // << operator means signed left shift-- it shifts the bits in the binary
// code to the left creating a bigger number the operand on the right
// specifies the amount of shift
screenBuffer[i * width + ptr] =
(255 << 24)
+ color; // I think loads the screenBuffer array. the index[i*width+ptr] is filled
// with the right operand
// rgbarray[i] = color;
}
if (ptr % 1 == 0) { // ptr remainder(%) 1
screenConverter.newPixels(
ptr, 0, 1,
nBins); // newPixels is method inside the MemoryImageSource i think it does this----Sends
// a rectangular region of the buffer of pixels to any ImageConsumers that are
// currently interested in the data for this image and notify them that an
// animation frame is complete.
screenRepaint = true;
repaint();
}
ptr =
(ptr + 1)
% size.width; // i think this may help in changing the co-ordinates ptr may be the x
// coordinate
recursion = false;
}
public void shuffle(int p) {
for (int i = 0; i < picWidth * picHeight; ++i) {
m_Pix[i] = compPix(m_Img1Pix[i], m_Img2Pix[i], p);
}
m_ImgSrc.newPixels();
revalidate();
}
/** Processes the data and renders it to a component */
public synchronized int process(Buffer buffer) {
if (component == null) return BUFFER_PROCESSED_FAILED;
Format inf = buffer.getFormat();
if (inf == null) return BUFFER_PROCESSED_FAILED;
if (inf != inputFormat || !buffer.getFormat().equals(inputFormat)) {
if (setInputFormat(inf) != null) return BUFFER_PROCESSED_FAILED;
}
Object data = buffer.getData();
if (!(data instanceof int[])) return BUFFER_PROCESSED_FAILED;
if (lastBuffer != buffer) {
lastBuffer = buffer;
newImage(buffer);
}
sourceImage.newPixels(0, 0, inWidth, inHeight);
Graphics g = component.getGraphics();
if (g != null) {
if (reqBounds == null) {
bounds = component.getBounds();
bounds.x = 0;
bounds.y = 0;
} else bounds = reqBounds;
g.drawImage(
destImage,
bounds.x,
bounds.y,
bounds.width,
bounds.height,
0,
0,
inWidth,
inHeight,
component);
}
return BUFFER_PROCESSED_OK;
}
public Image getSection(int x, int y, int width, int height) {
if (width > imgWidth || height > imgHeight) {
// create new image source and pixel array
size = width * height;
pixels = new int[size];
imageSource = new MemoryImageSource(width, height, pixels, 0, width);
imageSource.setAnimated(true);
// imageSource.setFullBufferUpdates(true);
image = Toolkit.getDefaultToolkit().createImage(imageSource);
}
if (width > imgWidth || height > imgHeight || x != oldX || y != oldY) {
// recreate pixel array
int skipWidth = 0;
if (width < imgWidth && height <= imgHeight) {
skipWidth = imgWidth - width;
}
int index = 0;
for (int aY = 0; aY < height; aY++) {
for (int aX = 0; aX < width; aX++) {
if (index >= size) {
System.out.println("oops...");
}
// pixels[index] = encodeColor(stats.getValueAt(x + aX, y +
// aY));
pixels[index] = mapColor(stats.getValueAt(x + aX, y + aY));
index++;
}
index += skipWidth; // skip pixels to the right of clip area
}
oldX = x;
oldY = y;
imageSource.newPixels(0, 0, width, height);
// imageSource.newPixels();
}
if (width > imgWidth || height > imgHeight) {
imgWidth = width;
imgHeight = height;
}
return image;
}
/**
* Sends a rectangular region of the buffer of pixels to any ImageConsumers that are currently
* interested in the data for this image and notify them that an animation frame is complete. This
* method only has effect if the animation flag has been turned on through the setAnimated()
* method. If the full buffer update flag was turned on with the setFullBufferUpdates() method
* then the rectangle parameters will be ignored and the entire buffer will always be sent.
*
* @param x the x coordinate of the upper left corner of the rectangle of pixels to be sent
* @param y the y coordinate of the upper left corner of the rectangle of pixels to be sent
* @param w the width of the rectangle of pixels to be sent
* @param h the height of the rectangle of pixels to be sent
* @see #newPixels(int, int, int, int, boolean)
* @see ImageConsumer
* @see #setAnimated
* @see #setFullBufferUpdates
*/
public synchronized void newPixels(int x, int y, int w, int h) {
newPixels(x, y, w, h, true);
}
/**
* Sends a whole new buffer of pixels to any ImageConsumers that are currently interested in the
* data for this image and notify them that an animation frame is complete. This method only has
* effect if the animation flag has been turned on through the setAnimated() method.
*
* @see #newPixels(int, int, int, int, boolean)
* @see ImageConsumer
* @see #setAnimated
*/
public void newPixels() {
newPixels(0, 0, width, height, true);
}
