/** Main method used to build the image based on a large number of tiles. */
public void buildImage(
BufferedImage toReturn,
int x,
int y,
int w,
int h,
int zoom,
int cachedZoom,
GMapListener listener) {
// validate
// if(x < 0 || y < 0 || w <= 0 || h <= 0) return getDefaultImage(w,h);
// if(toReturn != null) Graphics2D g = toReturn.createGraphics();
// find index of point
int xIndex = x / GDataSource.sourceSize.width;
int yIndex = y / GDataSource.sourceSize.height;
// find coord of our starting point
int xCoord = x % GDataSource.sourceSize.width;
int yCoord = y % GDataSource.sourceSize.height;
// Checks for invalid xCoord and yCoord
if (xCoord < 0) {
xCoord = 0;
}
if (yCoord < 0) {
yCoord = 0;
}
// load this index
BufferedImage image = getIndexedImage(xIndex, yIndex, zoom, cachedZoom, listener);
// get info about the image
// Dimension imageSize = new Dimension(image.getWidth(),image.getHeight());
// Holds number of row and column images needed
int rowImages;
int colImages;
// find the width of what we CAN paint
int paintWidth = GDataSource.sourceSize.width - xCoord;
int paintHeight = GDataSource.sourceSize.height - yCoord;
// Calculate number of row images
if ((h - paintHeight) % 256 == 0) {
rowImages = 1 + (h - paintHeight) / 256;
} else {
rowImages = 2 + (h - paintHeight) / 256;
}
// Calculate number of column images
if ((w - paintWidth) % 256 == 0) {
colImages = 1 + (w - paintWidth) / 256;
} else {
colImages = 2 + (w - paintWidth) / 256;
}
// Overal Image coordinates
int xImage = 0;
int yImage = 0;
// DEBUG
// System.out.println(x + " " + y + " " + w + " " + h + " " + rowImages + " " + colImages);
// System.out.println();
// set listener
if (listener != null) listener.updateGMapTaskSize(rowImages * colImages);
// a counter for the listener
int completed = 0;
// Iteratively loops through all CACHED images and paints them
for (int row = 0; row < rowImages; row++) {
for (int col = 0; col < colImages; col++) {
int thisXIndex = x / GDataSource.sourceSize.width + col;
int thisYIndex = y / GDataSource.sourceSize.height + row;
getSpecificImage(x, y, w, h, col, row, toReturn, zoom, cachedZoom, listener, true);
if (getGDataSource().isCached(thisXIndex, thisYIndex, zoom)) {
if (listener != null) {
listener.updateGMapCompleted(completed);
completed++;
}
}
if (listener.asynchronousGMapStopFlag()) return;
}
}
// do the UNCACHED IMAGES NEXT
for (int row = 0; row < rowImages; row++) {
for (int col = 0; col < colImages; col++) {
int thisXIndex = x / GDataSource.sourceSize.width + col;
int thisYIndex = y / GDataSource.sourceSize.height + row;
if (!getGDataSource().isCached(thisXIndex, thisYIndex, zoom)) {
getSpecificImage(x, y, w, h, col, row, toReturn, zoom, cachedZoom, listener, false);
if (listener != null) {
listener.updateGMapCompleted(completed);
completed++;
if (listener.asynchronousGMapStopFlag()) return;
}
}
}
}
// the dispatch to GDraw object
gDraw.draw(toReturn, new GPhysicalPoint(x, y, zoom), zoom);
}