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package imaging.filters;
import java.awt.image.*;
public class EmbossFilter extends SpatialFilter
{
int[] grey_raster_;
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_];
createColorRasters();
int pixel = 0;
int red, green, blue;
int row1, row2, row3, row4, row5;
int new_grey = 0;
int alpha;
for (int x = 1; x < rows_; x++)
{
for (int y = 1; y < columns_; y++)
{
alpha = defaultRGB_.getAlpha(raster_[pixel++]);
row1 = columns_*(x - 1) + y;
row2 = row1 + columns_;
row3 = row2 + columns_;
row4 = row3 + columns_;
row5 = row4 + columns_;
new_grey =
(- grey_raster_[row1 - 1]
- grey_raster_[row1]
- grey_raster_[row2 - 1]
+ grey_raster_[row2 + 1]
+ grey_raster_[row3]
+ grey_raster_[row3 + 1])/6 + 128;
if (new_grey > 255)
new_grey = 255;
pixels[y - 1] = (alpha << 24) | (new_grey << 16) | (new_grey << 8) | new_grey;
}
consumer.setPixels(0, x-1, columns_, 1, defaultRGB_, pixels, 0, columns_);
}
// System.out.println(timer);
consumer.imageComplete(status);
}
protected void createColorRasters()
{
int off = 0;
int index = columns_;
int pixel;
grey_raster_ = new int[(rows_ + 1)*(columns_ + 1)];
for (int x = 1; x < rows_ + 1; x++)
{
for (int y = 1; y < columns_ + 1; y ++)
{
index++;
pixel = raster_[off];
grey_raster_[index] = (int)(((double).212671*(double)defaultRGB_.getRed(pixel))
+ (double)((double).715160*(double)defaultRGB_.getGreen(pixel))
+ (double)((double).072169*(double)defaultRGB_.getBlue(pixel)));
off++;
}
}
}
}
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