private void floydSteinbergToolStripMenuItem_Click(object sender, EventArgs e)
{
int[,] palletteColor = new int[, ] {
{ 0, 0, 0 }, { 255, 0, 0, }, { 0, 255, 0 }, { 0, 0, 255 },
{ 255, 255, 0 }, { 0, 255, 255 }, { 255, 0, 255 }, { 255, 255, 255 }
};
Bitmap b = new Bitmap((Bitmap)this.pbInput.Image);
int merah, hijau, biru;
int errorR, errorG, errorB;
int[] warnaTerdekat;
int[] errorColor = new int[3];
progressBar1.Visible = true;
for (int i = 1; i <= b.Width - 2; i++)
{
for (int j = 0; j <= b.Height - 2; j++)
{
merah = b.GetPixel(i, j).R;
hijau = b.GetPixel(i, j).G;
biru = b.GetPixel(i, j).B;
warnaTerdekat = OlahCitra.warnaTerdekat(merah, hijau, biru);
errorR = merah - warnaTerdekat[0];
errorG = hijau - warnaTerdekat[1];
errorB = biru - warnaTerdekat[2];
errorColor[0] = OlahCitra.truncate(errorR);
errorColor[1] = OlahCitra.truncate(errorG);
errorColor[2] = OlahCitra.truncate(errorB);
//hitung pixel koordinat i+1, j
merah = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j).R + (7.0 / 16.0) * errorColor[0]));
hijau = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j).G + (7.0 / 16.0) * errorColor[1]));
biru = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j).B + (7.0 / 16.0) * errorColor[2]));
b.SetPixel(i + 1, j, Color.FromArgb(merah, hijau, biru));
//hitung pixel koordinat i-1, j+1
merah = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i - 1, j + 1).R + (3.0 / 16.0) * errorColor[0]));
hijau = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i - 1, j + 1).G + (3.0 / 16.0) * errorColor[1]));
biru = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i - 1, j + 1).B + (3.0 / 16.0) * errorColor[2]));
b.SetPixel(i - 1, j + 1, Color.FromArgb(merah, hijau, biru));
//hitung pixel koordinat i, j+1
merah = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i, j + 1).R + (5.0 / 16.0) * errorColor[0]));
hijau = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i, j + 1).G + (5.0 / 16.0) * errorColor[1]));
biru = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i, j + 1).B + (5.0 / 16.0) * errorColor[2]));
b.SetPixel(i, j + 1, Color.FromArgb(merah, hijau, biru));
//hitung pixel koordinat i+1, j+1
merah = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j + 1).R + (1.0 / 16.0) * errorColor[0]));
hijau = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j + 1).G + (1.0 / 16.0) * errorColor[1]));
biru = OlahCitra.truncate(Convert.ToInt32(b.GetPixel(i + 1, j + 1).B + (1.0 / 16.0) * errorColor[2]));
b.SetPixel(i + 1, j + 1, Color.FromArgb(merah, hijau, biru));
}
progressBar1.Value = Convert.ToInt16(100 * (i + 1) / b.Width);
}
pbOutput.Image = b;
progressBar1.Visible = false;
}
private void nearest8ColorsToolStripMenuItem_Click(object sender, EventArgs e)
{
int [] baru;
Bitmap b = new Bitmap((Bitmap)this.pbInput.Image);
this.pbOutput.Image = b;
progressBar1.Visible = true;
for (int i = 0; i < b.Width; i++)
{
for (int j = 0; j < b.Height; j++)
{
Color c1 = b.GetPixel(i, j);
baru = OlahCitra.warnaTerdekat(c1.R, c1.G, c1.B);
b.SetPixel(i, j, Color.FromArgb(baru[0], baru[1], baru[2]));
}
progressBar1.Value = Convert.ToInt16(100 * (i + 1) / b.Width);
}
progressBar1.Visible = false;
this.pbOutput.Image = b;
}
