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*) added 2 filters: blur and antialiasing (which in fact is nothing more than a mild blur) to ymageMatrix

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*) antialiasing is used for logo in banner


git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4256 6c8d7289-2bf4-0310-a012-ef5d649a1542
pull/1/head
low012 17 years ago
parent aeb1cf83a6
commit 4eb40c4f61
2 changed files with 202 additions and 17 deletions
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2
source/de/anomic/plasma/plasmaGrafics.java
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@ -396,7 +396,7 @@ public class plasmaGrafics {
if (logo != null) { if (logo != null) {
int x = (int)(100/2 - logo.getWidth()/2); int x = (int)(100/2 - logo.getWidth()/2);
int y = (int)(height/2 - logo.getHeight()/2); int y = (int)(height/2 - logo.getHeight()/2);
bannerPicture.insertBitmap(logo, x, y, 0, 0); bannerPicture.insertBitmap(logo, x, y, 0, 0, ymageMatrix.FILTER_ANTIALIASING);
} }
if (!bordercolor.equals("")) { if (!bordercolor.equals("")) {

217
source/de/anomic/ymage/ymageMatrix.java
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@ -59,6 +59,9 @@ public class ymageMatrix {
public static final byte MODE_ADD = 1; public static final byte MODE_ADD = 1;
public static final byte MODE_SUB = 2; public static final byte MODE_SUB = 2;
public static final byte FILTER_ANTIALIASING = 0;
public static final byte FILTER_BLUR = 1;
protected int width, height; protected int width, height;
private BufferedImage image; private BufferedImage image;
private WritableRaster grid; private WritableRaster grid;
@ -268,16 +271,27 @@ public class ymageMatrix {
} }
/** /**
* inserts an image into the ymageMatrix * inserts an image into the ymageMatrix
* @param bitmap the bitmap to be inserted * @param bitmap the bitmap to be inserted
* @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed * @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed * @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* * @author Marc Nause
* @author Marc Nause
*/ */
public void insertBitmap(BufferedImage bitmap, int x, int y) { public void insertBitmap(BufferedImage bitmap, int x, int y) {
insertBitmap(bitmap, x, y, -1); insertBitmap(bitmap, x, y, -1);
} }
/**
* inserts an image into the ymageMatrix
* @param bitmap the bitmap to be inserted
* @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param filter chooses filter
* @author Marc Nause
*/
public void insertBitmap(BufferedImage bitmap, int x, int y, byte filter) {
insertBitmap(bitmap, x, y, -1, filter);
}
/** /**
* inserts an image into the ymageMatrix where all pixels that have the same RGB value as the * inserts an image into the ymageMatrix where all pixels that have the same RGB value as the
@ -294,19 +308,34 @@ public class ymageMatrix {
} }
/** /**
* inserts an image into the ymageMatrix where all pixels that have a special RGB value * inserts an image into the ymageMatrix where all pixels that have the same RGB value as the
* pixel at (xx, yy) are transparent * pixel at (xx, yy) are transparent
* @param bitmap the bitmap to be inserted * @param bitmap the bitmap to be inserted
* @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed * @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed * @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param rgb the RGB value that will be transparent * @param xx the x value of the pixel that determines which color is transparent
* @author Marc Nause * @param yy the y value of the pixel that determines which color is transparent
* @param filter chooses filter
* @author Marc Nause
*/
public void insertBitmap(BufferedImage bitmap, int x, int y, int xx, int yy, byte filter) {
insertBitmap(bitmap, x, y, bitmap.getRGB(xx, yy), filter);
}
/**
* inserts an image into the ymageMatrix where all pixels that have a special RGB value
* pixel at (xx, yy) are transparent
* @param bitmap the bitmap to be inserted
* @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param rgb the RGB value that will be transparent
* @author Marc Nause
*/ */
public void insertBitmap(BufferedImage bitmap, int x, int y, int transRGB) { public void insertBitmap(BufferedImage bitmap, int x, int y, int transRGB) {
int heightSrc = bitmap.getHeight(); int heightSrc = bitmap.getHeight();
int widthSrc = bitmap.getWidth(); int widthSrc = bitmap.getWidth();
int heightTgt = image.getHeight(); int heightTgt = height;
int widthTgt = image.getWidth(); int widthTgt = width;
int rgb; int rgb;
for (int i = 0; i < heightSrc; i++) { for (int i = 0; i < heightSrc; i++) {
@ -320,7 +349,163 @@ public class ymageMatrix {
} }
} }
} }
} }
/**
* inserts an image into the ymageMatrix where all pixels that have a special RGB value
* pixel at (xx, yy) are transparent
* @param bitmap the bitmap to be inserted
* @param x the x value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param y the y value of the upper left coordinate in the ymageMatrix where the bitmap will be placed
* @param rgb the RGB value that will be transparent
* @param filter chooses filter
* @author Marc Nause
*/
public void insertBitmap(BufferedImage bitmap, int x, int y, int transRGB, byte filter) {
insertBitmap(bitmap, x, y, transRGB);
filter(x-1, y-1, x + bitmap.getWidth(), y + bitmap.getHeight(), filter);
}
/**
* antialiasing filter for a square part of the ymageMatrix
* @param lox x value for left upper coordinate
* @param loy y value for left upper coordinate
* @param rux x value for right lower coordinate
* @param ruy y value for right lower coordinate
* @author Marc Nause
*/
public void antialiasing(int lox, int loy, int rux, int ruy) {
filter(lox, loy, rux, ruy, FILTER_ANTIALIASING);
}
/**
* blur filter for a square part of the ymageMatrix
* @param lox x value for left upper coordinate
* @param loy y value for left upper coordinate
* @param rux x value for right lower coordinate
* @param ruy y value for right lower coordinate
* @author Marc Nause
*/
public void blur(int lox, int loy, int rux, int ruy) {
filter(lox, loy, rux, ruy, FILTER_BLUR);
}
/**
* filter for a square part of the ymageMatrix
* @param lox x value for left upper coordinate
* @param loy y value for left upper coordinate
* @param rux x value for right lower coordinate
* @param ruy y value for right lower coordinate
* @param filter chooses filter
* @author Marc Nause
*/
private void filter(int lox, int loy, int rux, int ruy, byte filter) {
// taking care that all values are legal
if (lox < 0) { lox = 0; }
if (loy < 0) { loy = 0; }
if (rux < 0) { rux = 0; }
if (ruy < 0) { ruy = 0; }
if (lox > width) { lox = width - 1; }
if (loy > height){ loy = height - 1; }
if (rux > width) { rux = width - 1; }
if (ruy > height){ ruy = width - 1; }
if (lox > rux) {
int tmp = lox;
lox = rux;
rux = tmp;
}
if (loy > ruy) {
int tmp = loy;
loy = ruy;
ruy = tmp;
}
int numberOfNeighbours = 0;
int rgbR = 0;
int rgbG = 0;
int rgbB = 0;
int rgb = 0;
int width2 = rux - lox + 1;
int height2 = ruy - loy + 1;
BufferedImage image2 = new BufferedImage(width2, height2, BufferedImage.TYPE_INT_RGB);
for (int i = lox; i < rux + 1; i++) {
for (int j = loy; j < ruy + 1; j++) {
numberOfNeighbours = 0;
rgbR = 0;
rgbG = 0;
rgbB = 0;
// taking samples from neighbours of pixel
if (i > lox) {
rgb = image.getRGB(i-1, j);
rgbR += rgb >> 16 & 0xff;
rgbG += rgb >> 8& 0xff;
rgbB += rgb & 0xff;
numberOfNeighbours++;
}
if (j > loy) {
rgb = image.getRGB(i, j-1);
rgbR += rgb >> 16 & 0xff;
rgbG += rgb >> 8& 0xff;
rgbB += rgb & 0xff;
numberOfNeighbours++;
}
if (i < width- 1) {
rgb = image.getRGB(i+1, j);
rgbR += rgb >> 16 & 0xff;
rgbG += rgb >> 8& 0xff;
rgbB += rgb & 0xff;
numberOfNeighbours++;
}
if (i < height - 1) {
rgb = image.getRGB(i, j+1);
rgbR += rgb >> 16 & 0xff;
rgbG += rgb >> 8& 0xff;
rgbB += rgb & 0xff;
numberOfNeighbours++;
}
rgb = image.getRGB(i, j);
// put more weight on pixle than on neighbours
if (filter == FILTER_ANTIALIASING) {
if (numberOfNeighbours == 0) {
numberOfNeighbours = 1;
}
rgbR += (rgb >> 16 & 0xff) * numberOfNeighbours;
rgbG += (rgb >> 8 & 0xff) * numberOfNeighbours;
rgbB += (rgb & 0xff) * numberOfNeighbours;
if (numberOfNeighbours > 1) {
numberOfNeighbours += numberOfNeighbours;
}
}
// put same weight in neighbours as on pixel
if (filter == FILTER_BLUR) {
rgbR += (rgb >> 16 & 0xff);
rgbG += (rgb >> 8 & 0xff);
rgbB += (rgb & 0xff);
numberOfNeighbours++;
}
// calculatinc the average
rgbR = (int) (rgbR / numberOfNeighbours);
rgbG = (int) (rgbG / numberOfNeighbours);
rgbB = (int) (rgbB / numberOfNeighbours);
rgb = (rgbR << 16) | (rgbG << 8) | rgbB;
image2.setRGB(i-lox, j-loy, rgb);
}
}
// insert new version of area into image
insertBitmap(image2, lox, loy);
}
public static void demoPaint(ymageMatrix m) { public static void demoPaint(ymageMatrix m) {
m.setColor(GREY); m.setColor(GREY);

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