@Override
protected BufferedImage crop(BufferedImage image, int iteration) {
float ratio = HearthstoneAnalyser.getRatio(image);
int x = (int) (8 * ratio);
int y = (int) (53 * ratio);
int width = (int) (236 * ratio);
int height = (int) (30 * ratio);
return image.getSubimage(x, y, width, height);
}
/**
* Saves a PNG image in the temp/extraction folder, cropped as specified. Ths image is saved on a
* background thread so that detection isn't held up.
*
* <p>The code assumes that it has been given a full-size Hearthstone screenshot, and so the
* position of the crop is adjusted to the relative position for the actual screen in the image.
* In other words, if the screenshot is higher resolution or lower resolution than the reference
* 1600x1200 size then the crop is moved accordingly.
*
* @param image The image to save. You should not make any further changes to this image on the
* main thread after submitting it to this method, otherwise the save file will have
* unpredictable contents.
* @param filename The name of the file to save. Do not include the extension (.png is added
* automatically)
* @param x the X coordinate of the upper-left corner of the crop, relative to a 1600-pixel wide
* screen
* @param y the Y coordinate of the upper-left corner of the crop, relative to a 1200-pixel high
* screen
* @param w the width of the specified rectangular region, relative to a 1600-pixel wide screen
* @param h the height of the specified rectangular region, relative to a 1200-pixel high screen
*/
public static void saveCroppedPngImage(
final BufferedImage image, final String filename, int x, int y, int w, int h) {
float ratio = HearthstoneAnalyser.getRatio(image);
int xOffset = HearthstoneAnalyser.getXOffset(image, ratio);
int relativeX = (int) (x * ratio + xOffset);
int relativeY = (int) (y * ratio);
int relativeWidth = (int) (w * ratio);
int relativeHeight = (int) (h * ratio);
debugLog.debug(
"Cropping image to x={} y={} width={} height={}",
relativeX,
relativeY,
relativeWidth,
relativeHeight);
BufferedImage croppedImage =
image.getSubimage(relativeX, relativeY, relativeWidth, relativeHeight);
savePngImage(croppedImage, filename);
}