protected void AnalyzePixels()
{
int len = pixels.Length;
int nPix = len / 3;
indexedPixels = new byte[nPix];
NeuQuant nq = new NeuQuant(pixels, len, sample);
// initialize quantizer
colorTab = nq.Process(); // create reduced palette
int k = 0;
for (int i = 0; i < nPix; i++)
{
int index =
nq.Map(pixels[k++] & 0xff,
pixels[k++] & 0xff,
pixels[k++] & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte)index;
}
pixels = null;
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent != Color.Empty)
{
transIndex = FindClosest(transparent);
}
}
/**
* Analyzes image colors and creates color map.
*/
protected void AnalyzePixels()
{
int len = pixels.Length;
int nPix = len / 3;
indexedPixels = new byte[nPix];
NeuQuant nq = new NeuQuant(pixels, len, sample);
// initialize quantizer
colorTab = nq.Process(); // create reduced palette
// convert map from BGR to RGB
// for (int i = 0; i < colorTab.Length; i += 3)
// {
// byte temp = colorTab[i];
// colorTab[i] = colorTab[i + 2];
// colorTab[i + 2] = temp;
// usedEntry[i / 3] = false;
// }
// map image pixels to new palette
int k = 0;
for (int i = 0; i < nPix; i++)
{
int index =
nq.Map(pixels[k++] & 0xff,
pixels[k++] & 0xff,
pixels[k++] & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte)index;
}
pixels = null;
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent != Color.Empty)
{
transIndex = FindClosest(transparent);
}
}
/**
* Analyzes image colors and creates color map.
*/
protected void AnalyzePixels()
{
int len = pixels.Length;
int nPix = len / 3;
indexedPixels = new byte[nPix];
NeuQuant nq = new NeuQuant(pixels, len, sample);
// initialize quantizer
if (perfectColours)
{
List <Color> cols = new List <Color>();
for (int i = 0; i < nPix; i++)
{
Color c = Color.FromArgb(0xFF, pixels[i * 3], pixels[(i * 3) + 1], pixels[(i * 3) + 2]);
if (!cols.Contains(c))
{
cols.Add(c);
}
}
colorTab = new byte[cols.Count * 3];
for (int i = 0; i < cols.Count; i++)
{
colorTab[(i * 3)] = cols[i].R;
colorTab[(i * 3) + 1] = cols[i].G;
colorTab[(i * 3) + 2] = cols[i].B;
}
//map image pixels to new palette
for (int i = 0; i < nPix; i++)
{
foreach (Color c in cols)
{
if (pixels[i * 3] == c.R && pixels[(i * 3) + 1] == c.G && pixels[(i * 3) + 2] == c.B)
{
usedEntry[cols.IndexOf(c)] = true;
indexedPixels[i] = (byte)cols.IndexOf(c);
break;
}
}
}
}
else
{
colorTab = nq.Process(); // create reduced palette
// map image pixels to new palette
int k = 0;
for (int i = 0; i < nPix; i++)
{
int index =
nq.Map(pixels[k++] & 0xff,
pixels[k++] & 0xff,
pixels[k++] & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte)index;
}
}
pixels = null;
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent != Color.Empty)
{
transIndex = FindClosest(transparent);
}
}
/**
* Analyzes image colors and creates color map.
*/
protected void AnalyzePixels()
{
int len = pixels.Length;
int nPix = len / 3;
indexedPixels = new byte[nPix];
NeuQuant nq = new NeuQuant(pixels, len, sample);
// initialize quantizer
colorTab = nq.Process(); // create reduced palette
// convert map from BGR to RGB
// for (int i = 0; i < colorTab.Length; i += 3)
// {
// byte temp = colorTab[i];
// colorTab[i] = colorTab[i + 2];
// colorTab[i + 2] = temp;
// usedEntry[i / 3] = false;
// }
// map image pixels to new palette
int k = 0;
for (int i = 0; i < nPix; i++)
{
int index =
nq.Map(pixels[k++] & 0xff,
pixels[k++] & 0xff,
pixels[k++] & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte)index;
}
pixels = null;
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent != Colors.Transparent)
{
transIndex = FindClosest(transparent);
}
}
protected void AnalyzePixels()
{
int len = pixels.Length;
int nPix = len / 3;
indexedPixels = new byte[nPix];
NeuQuant nq = new NeuQuant(pixels, len, sample);
// initialize quantizer
colorTab = nq.Process(); // create reduced palette
int k = 0;
for (int i = 0; i < nPix; i++)
{
int index =
nq.Map(pixels[k++] & 0xff,
pixels[k++] & 0xff,
pixels[k++] & 0xff);
usedEntry[index] = true;
indexedPixels[i] = (byte) index;
}
pixels = null;
colorDepth = 8;
palSize = 7;
// get closest match to transparent color if specified
if (transparent != Color.Empty )
{
transIndex = FindClosest(transparent);
}
}
