public static ArthurImage multiply(ArthurImage one, ArthurImage two) {
BufferedImage image = JavaImageMath.clone(one.bf);
BufferedImage image2 = JavaImageMath.clone(two.bf);
WritableRaster r1 = image.getRaster();
WritableRaster r2 = image2.getRaster();
int newWidth = Math.max(r1.getWidth(), r2.getWidth());
int newHeight = Math.max(r1.getHeight(), r2.getHeight());
BufferedImage collage = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
WritableRaster raster = collage.getRaster();
int[] p1 = new int[3];
int[] p2 = new int[3];
int[] pixelArray = new int[3];
for (int y = 0; y < newHeight; y++) {
for (int x = 0; x < newWidth; x++) {
p1 = null;
p2 = null;
if (x < r1.getWidth() && y < r1.getHeight()) {
p1 = r1.getPixel(x, y, p1);
}
if (x < r2.getWidth() && y < r2.getHeight()) {
p2 = r2.getPixel(x, y, p2);
}
for (int i = 0; i < 3; i++) {
if (p1 == null && p2 == null) {
pixelArray[i] = 0;
} else if (p1 == null && p2 != null) {
pixelArray[i] = p2[i];
} else if (p1 != null && p2 == null) {
pixelArray[i] = p1[i];
} else {
pixelArray[i] = (int) ((p1[i] + p2[i]) / 2);
}
}
raster.setPixel(x, y, pixelArray);
}
}
// save image
String outputFn =
one.filename.substring(0, one.filename.indexOf(".jpg"))
+ "X"
+ // filename can't contain the / or *characters; decide later
two.filename.substring(0, two.filename.indexOf(".jpg"))
+ counter
+ ".jpg";
counter++;
return new ArthurImage(collage, outputFn);
}
public static ArthurImage add(ArthurImage one, ArthurColor two) {
BufferedImage image = JavaImageMath.clone(one.bf);
double r = two.r.val;
double g = two.g.val;
double b = two.g.val;
WritableRaster raster = image.getRaster();
int[] pixelArray = new int[3];
for (int y = 0; y < raster.getHeight(); y++) {
for (int x = 0; x < raster.getWidth(); x++) {
pixelArray = raster.getPixel(x, y, pixelArray);
pixelArray[0] = (int) (3 * pixelArray[0] + r) / 4;
pixelArray[1] = (int) (3 * pixelArray[1] + g) / 4;
pixelArray[2] = (int) (3 * pixelArray[2] + b) / 4;
raster.setPixel(x, y, pixelArray);
}
}
// save image
String outputFn =
one.filename.substring(0, one.filename.indexOf(".jpg"))
+ "+"
+ // filename can't contain the / or *characters; decide later
r
+ g
+ b
+ counter
+ ".jpg";
counter++;
return new ArthurImage(image, outputFn);
}
public static ArthurImage add(ArthurImage one, ArthurNumber two) {
BufferedImage image = JavaImageMath.clone(one.bf);
int num = two.val.intValue();
WritableRaster raster = image.getRaster();
int[] pixelArray = new int[3];
for (int y = 0; y < raster.getHeight(); y++) {
for (int x = 0; x < raster.getWidth(); x++) {
pixelArray = raster.getPixel(x, y, pixelArray);
pixelArray[0] = pixelArray[0] + num;
pixelArray[1] = pixelArray[1] + num;
pixelArray[2] = pixelArray[2] + num;
for (int i = 0; i < 3; i++) {
if (pixelArray[i] > 255) {
pixelArray[i] = 255;
}
}
raster.setPixel(x, y, pixelArray);
}
}
// save image
String outputFn =
one.filename.substring(0, one.filename.indexOf(".jpg"))
+ "+"
+ // filename can't contain the / or *characters; decide later
num
+ counter
+ ".jpg";
counter++;
return new ArthurImage(image, outputFn);
}
public static ArthurImage divide(ArthurImage one, ArthurImage two) {
BufferedImage image = JavaImageMath.clone(one.bf);
BufferedImage image2 = JavaImageMath.clone(two.bf);
WritableRaster r1 = image.getRaster();
int width = r1.getWidth();
int height = r1.getHeight();
BufferedImage r2resize = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = r2resize.createGraphics();
g2d.drawImage(image2, 0, 0, width, height, null);
g2d.dispose();
WritableRaster r2 = r2resize.getRaster();
BufferedImage collage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
WritableRaster raster = collage.getRaster();
int[] p1 = new int[3];
int[] p2 = new int[3];
int[] pixelArray = new int[3];
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
p1 = r1.getPixel(x, y, p1);
p2 = r2.getPixel(x, y, p2);
for (int i = 0; i < 3; i++) {
pixelArray[i] = (int) ((p1[i] + p2[i]) / 2);
}
raster.setPixel(x, y, pixelArray);
}
}
// save image
String outputFn =
one.filename.substring(0, one.filename.indexOf(".jpg"))
+ "D"
+ // filename can't contain the / or *characters; decide later
two.filename.substring(0, two.filename.indexOf(".jpg"))
+ counter
+ ".jpg";
counter++;
return new ArthurImage(collage, outputFn);
}
private void makeNoDataTransparent(
BufferedImage image, short missingDataSignal, short missingDataReplacement) {
WritableRaster raster = null;
if (null != image
&& (image.getType() == BufferedImage.TYPE_4BYTE_ABGR
|| image.getType() == BufferedImage.TYPE_INT_ARGB)
&& null != (raster = image.getRaster())) {
int nodata_r = missingDataSignal & 0xff;
int nodata_g = missingDataSignal & 0xff;
int nodata_b = missingDataSignal & 0xff;
int[] pixel = new int[4];
int[] transparentPixel =
new int[] {
0xFF & missingDataReplacement /* red */,
0xFF & missingDataReplacement /* green */,
0xFF & missingDataReplacement,
0x00 /* alpha */
};
int width = image.getWidth();
int height = image.getHeight();
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
// We know, by the nature of this source, that we are dealing with RGBA rasters...
raster.getPixel(i, j, pixel);
if (pixel[0] == nodata_r && pixel[1] == nodata_g && pixel[2] == nodata_b) {
// pixel[0] = pixel[1] = pixel[2] = 0xFF &
// missingDataReplacement;
// pixel[3] = 0; // transparent
raster.setPixel(i, j, transparentPixel);
} else {
pixel[3] = 0xff; // non-transparent
raster.setPixel(i, j, pixel);
}
}
}
}
}