public static Bitmap Parse(PPMImage image, ref int maxR, ref int maxG, ref int maxB)
{
DirectBitmap bitMap = new DirectBitmap(image.Columns, image.Rows);
int stringPos = 0;
int length = image.ImageString.Length;
if (image.ImageString.Length / 3 != image.Columns * image.Rows)
{
throw new System.Exception("Bytes doesn't match specified image size!");
}
for (int i = 0; i < image.Rows; i++)
{
for (int j = 0; j < image.Columns; j++)
{
int R = (int)image.ImageString[stringPos];
int G = (int)image.ImageString[stringPos + 1];
int B = (int)image.ImageString[stringPos + 2];
if (R > maxR)
{
maxR = R;
}
if (G > maxG)
{
maxG = G;
}
if (B > maxB)
{
maxB = B;
}
stringPos += 3;
bitMap.Bits[i * image.Columns + j] = Color.FromArgb(R, G, B).ToArgb();
}
}
return(bitMap.Bitmap);
}
public static Bitmap Parse(PPMImage image)
{
if (image.BitsCount / 3 != image.Columns * image.Rows)
{
throw new System.Exception("Bytes doesn't match specified image size!");
}
DirectBitmap bitMap = new DirectBitmap(image.Bits, image.Columns, image.Rows);
return(bitMap.Bitmap);
}
public static Bitmap Scale(PPMImage image)
{
if (image.BitsCount / 3 != image.Columns * image.Rows)
{
throw new System.Exception("Bytes doesn't match specified image size!");
}
DirectBitmap bitMap = new DirectBitmap(image.Columns, image.Rows);
for (int i = 0; i < image.Bits.Length; i++)
{
var color = Color.FromArgb(image.Bits[i]);
var newR = color.R * image.MaxValue / image.MaxR;
var newG = color.G * image.MaxValue / image.MaxG;
var newB = color.B * image.MaxValue / image.MaxB;
bitMap.Bits[i] = Color.FromArgb(newR, newG, newB).ToArgb();
}
return(bitMap.Bitmap);
}
public static Bitmap Scale(PPMImage image)
{
DirectBitmap bitMap = new DirectBitmap(image.Columns, image.Rows);
int stringPos = 0;
int length = image.ImageString.Length;
if (image.ImageString.Length / 3 != image.Columns * image.Rows)
{
throw new System.Exception("Bytes doesn't match specified image size!");
}
for (int i = 0; i < image.Rows; i++)
{
for (int j = 0; j < image.Columns; j++)
{
int R = (int)image.ImageString[stringPos] * image.MaxValue / image.MaxR;
int G = (int)image.ImageString[stringPos + 1] * image.MaxValue / image.MaxG;
int B = (int)image.ImageString[stringPos + 2] * image.MaxValue / image.MaxB;
stringPos += 3;
bitMap.Bits[i * image.Columns + j] = Color.FromArgb(R, G, B).ToArgb();
}
}
return(bitMap.Bitmap);
}
public PPMReader(string fileName)
{
_sr = new StreamReader(File.Open(fileName, FileMode.Open), Encoding.GetEncoding("iso-8859-1"));
_image = new PPMImage();
}
