// vartika says on 3 august
// public void paintRegion(Graphics2D g, int dx, int dy, long sx, long sy,
public ReturnObject paintRegion(long sx, long sy, int w, int h, double downsample)
throws IOException {
if (downsample < 1.0) {
throw new IllegalArgumentException("downsample (" + downsample + ") must be >= 1.0");
}
// get the level
int level = getBestLevelForDownsample(downsample);
// figure out its downsample
double levelDS = levelDownsamples[level];
// compute the difference
double relativeDS = downsample / levelDS;
// scale source coordinates into level coordinates
long baseX = (long) (downsample * sx);
long baseY = (long) (downsample * sy);
long levelX = (long) (relativeDS * sx);
long levelY = (long) (relativeDS * sy);
// scale width and height by relative downsample
int levelW = (int) Math.round(relativeDS * w);
int levelH = (int) Math.round(relativeDS * h);
// clip to edge of image
levelW = (int) Math.min(levelW, getLevelWidth(level) - levelX);
levelH = (int) Math.min(levelH, getLevelHeight(level) - levelY);
w = (int) Math.round(levelW / relativeDS);
h = (int) Math.round(levelH / relativeDS);
if (debug) {
System.out.println(
"levelW " + levelW + ", levelH " + levelH + ", baseX " + baseX + ", baseY " + baseY);
}
if (levelW <= 0 || levelH <= 0) {
// nothing to draw
return null;
}
BufferedImage img = new BufferedImage(levelW, levelH, BufferedImage.TYPE_INT_ARGB_PRE);
int data[] = ((DataBufferInt) img.getRaster().getDataBuffer()).getData();
paintRegionARGB(data, baseX, baseY, level, img.getWidth(), img.getHeight());
// vartika says on 5 august
System.out.println("data in paintRegion: " + data);
System.out.println("img in paintRegion: " + img);
// from here return the buffered image to client for drawing
// below code should be at client
// vartika says on 2 august
// g.scale(1.0 / relativeDS, 1.0 / relativeDS);
// vartika on 6 august
// trying to convert int data[] to byte [] or String...
ByteBuffer byteBuffer = ByteBuffer.allocate(data.length * 4);
IntBuffer intBuffer = byteBuffer.asIntBuffer();
intBuffer.put(data);
byte[] byteArray = byteBuffer.array();
// vartika on 10 august
// saving buffered image to disk as png
// try {
// vartika on 13 august to for demo
// File outputFile = new File("/home/vartika/humintec/image_files/BufferedImageToPng.png");
// ImageIO.write(img, "png", outputFile);
// } catch(IOException e) {
// e.printStackTrace();
// }
// instead of using int[]data to create bytearray, use the buffered image to create byte []
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(img, "png", baos);
baos.flush();
byte[] byteArrayFromBufferedImage = baos.toByteArray();
baos.close();
ReturnObject tmpobj = createReturnObject(byteArrayFromBufferedImage, img, w, h);
return tmpobj;
// vartika to uncomment later - 10 august
// vartika says on 3 august
/*ReturnObject obj = createReturnObject(byteArray, img, w, h);
return obj;*/
/* g.drawImage(img, dx, dy, w, h, null);
if (debug) {
System.out.println(img);
if (debugThingy == 0) {
g.setColor(new Color(1.0f, 0.0f, 0.0f, 0.4f));
debugThingy = 1;
} else {
g.setColor(new Color(0.0f, 1.0f, 0.0f, 0.4f));
debugThingy = 0;
}
g.fillRect(dx, dy, w, h);
}*/
}
