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package imaging.filters;
import java.awt.image.*;
public class EmbossFilter extends SpatialFilter
{
public EmbossFilter()
{
}
public String info ()
{
return "Embosses an image.";
}
public void imageComplete(int status)
{
Timer timer = new Timer();
if (status == IMAGEERROR || status == IMAGEABORTED)
{
consumer.imageComplete(status);
System.out.println("Image Error: " + status);
return;
}
int[] pixels = new int[columns_];
int pixel = 0;
int red, green, blue;
int row1, row2, row3, ul, um, ml, mr, lm, lr;
int new_grey = 0;
int alpha;
for (int x = 1; x < rows_ - 1; x++)
{
for (int y = 1; y < columns_ - 1; y++)
{
row1 = columns_*(x - 1) + y;
row2 = row1 + columns_;
row3 = row2 + columns_;
ul = raster_[row1 - 1];
um = raster_[row1];
ml = raster_[row2 - 1];
mr = raster_[row2 + 1];
lm = raster_[row3];
lr = raster_[row3 + 1];
alpha = (raster_[row2] >> 24) & 0xff;
red = ((- (((ul >> 16) & 0xff) << 1) - ((um >> 16) & 0xff) -
((ml >> 16) & 0xff) + ((mr >> 16) & 0xff) +
((lm >> 16) & 0xff) + (((lr >> 16) & 0xff) << 1)) >> 3) + 128;
green = ((- (((ul >> 8) & 0xff) << 1) - ((um >> 8) & 0xff) -
((ml >> 8) & 0xff) + ((mr >> 8) & 0xff) +
((lm >> 8) & 0xff) + (((lr >> 8) & 0xff) << 1)) >> 3) + 128;
blue = ((- ((ul & 0xff) << 1) - (um & 0xff) -
(ml & 0xff) + (mr & 0xff) +
(lm & 0xff) + ((lr & 0xff) << 1)) >> 3) + 128;
new_grey = (((int)(red)*11 + ((int)(green) << 4) + (int)(blue)*5) >> 5);
pixels[y] = (alpha << 24) | (new_grey << 16) | (new_grey << 8) | new_grey;
}
consumer.setPixels(0, x, columns_, 1, defaultRGB_, pixels, 0, columns_);
}
// System.out.println(timer);
consumer.imageComplete(status);
}
}
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