private void LoadImage(WriteableBitmap bitmap)
{
if (bitmap.PixelWidth != 0 && bitmap.PixelHeight != 0)
{
this.loadedBitmap = bitmap;
PixelateGenTaskData task_data = new PixelateGenTaskData();
task_data.pix_denom = this.pixDenom;
task_data.width = bitmap.PixelWidth;
task_data.height = bitmap.PixelHeight;
task_data.pixels = bitmap.Pixels;
this.pixelateGeneratorWorker.RunWorkerAsync(task_data);
this.GenerationProgressIndicator.IsVisible = true;
}
}
private void StartPixelateGenerator()
{
if (this.scaledBitmap != null)
{
try
{
PixelateGenTaskData task_data = new PixelateGenTaskData();
task_data.pix_denom = this.pixDenom;
task_data.width = this.scaledBitmap.PixelWidth;
task_data.height = this.scaledBitmap.PixelHeight;
task_data.pixels = this.scaledBitmap.Pixels;
this.pixelateGeneratorWorker.RunWorkerAsync(task_data);
this.GenerationProgressIndicator.IsVisible = true;
}
catch (Exception)
{
// Ignore
}
}
}
private void pixelateGeneratorWorker_DoWork(object sender, DoWorkEventArgs e)
{
int pix_denom = (e.Argument as PixelateGenTaskData).pix_denom;
int width = (e.Argument as PixelateGenTaskData).width;
int height = (e.Argument as PixelateGenTaskData).height;
int[] pixels = (e.Argument as PixelateGenTaskData).pixels;
int[] pixelated_pixels = pixels.Clone() as int[];
int pix_size = width > height ? width / pix_denom : height / pix_denom;
if (pix_size != 0)
{
for (int i = 0; i < width / pix_size + 1; i++)
{
for (int j = 0; j < height / pix_size + 1; j++)
{
int avg_r = 0;
int avg_g = 0;
int avg_b = 0;
int pixcnt = 0;
for (int x = i * pix_size; x < (i + 1) * pix_size && x < width; x++)
{
for (int y = j * pix_size; y < (j + 1) * pix_size && y < height; y++)
{
byte[] color = BitConverter.GetBytes(pixelated_pixels[y * width + x]);
avg_r += color[0];
avg_g += color[1];
avg_b += color[2];
pixcnt++;
}
}
if (pixcnt != 0)
{
avg_r = avg_r / pixcnt;
avg_g = avg_g / pixcnt;
avg_b = avg_b / pixcnt;
for (int x = i * pix_size; x < (i + 1) * pix_size && x < width; x++)
{
for (int y = j * pix_size; y < (j + 1) * pix_size && y < height; y++)
{
byte[] color = BitConverter.GetBytes(pixelated_pixels[y * width + x]);
pixelated_pixels[y * width + x] = (color[3] << 24) | (avg_b << 16) | (avg_g << 8) | avg_r;
}
}
}
}
}
}
PixelateGenTaskData task_data = new PixelateGenTaskData();
task_data.pix_denom = pix_denom;
task_data.width = width;
task_data.height = height;
task_data.pixels = pixelated_pixels;
e.Result = task_data;
}
