/// <summary>
/// Converts a list of KeyValuePairs into an image using a ColorMapper.
/// </summary>
/// <param name="rg">Specifies a KeyValuePair where the Value is converted to a color.</param>
/// <param name="sz">Specifies the size of the image.</param>
/// <param name="clrMap">Specifies a color mapper to use when converting each value into a color.</param>
/// <returns>The Image of the data is returned.</returns>
public static Bitmap GetImage(List <Result> rg, Size sz, ColorMapper clrMap)
{
Bitmap bmp = new Bitmap(sz.Width, sz.Height);
int nSize = (int)Math.Ceiling(Math.Sqrt(rg.Count));
float fX = 0;
float fY = 0;
float fIncX = (float)sz.Width / (float)nSize;
float fIncY = (float)sz.Height / (float)nSize;
using (Graphics g = Graphics.FromImage(bmp))
{
g.FillRectangle(Brushes.Black, new RectangleF(0, 0, bmp.Width, bmp.Height));
for (int i = 0; i < rg.Count; i++)
{
Brush br = new SolidBrush(clrMap.GetColor(rg[i].Score));
g.FillRectangle(br, fX, fY, fIncX, fIncY);
br.Dispose();
fX += fIncX;
if (fX >= bmp.Width)
{
fX = 0;
fY += fIncY;
}
}
}
return(bmp);
}
/// <summary>
/// Converts a SimplDatum (or Datum) into an image, optionally using a ColorMapper.
/// </summary>
/// <param name="d">Specifies the Datum to use.</param>
/// <param name="clrMap">Optionally, specifies a color mapper to use when converting each value into a color (default = null, not used).</param>
/// <param name="rgClrOrder">Optionally, specifies the color ordering. Note, this list must have the same number of elements as there are channels.</param>
/// <returns>The Image of the data is returned.</returns>
public static Bitmap GetImage(SimpleDatum d, ColorMapper clrMap = null, List <int> rgClrOrder = null)
{
if (d.Channels != 1 && d.Channels != 3)
{
throw new Exception("Standard images only support either 1 or 3 channels.");
}
Bitmap bmp = new Bitmap(d.Width, d.Height);
List <byte>[] rgrgByteData = new List <byte> [d.Channels];
List <double>[] rgrgRealData = new List <double> [d.Channels];
int nOffset = 0;
int nCount = d.Height * d.Width;
bool bDataIsReal = d.HasRealData;
double dfMin = 1;
double dfMax = 0;
for (int i = 0; i < d.Channels; i++)
{
List <byte> rgByteData = new List <byte>();
List <double> rgRealData = new List <double>();
int nChIdx = i;
if (rgClrOrder != null)
{
nChIdx = rgClrOrder[i];
}
if (bDataIsReal)
{
for (int j = 0; j < nCount; j++)
{
double dfVal = d.GetDataAtD(nOffset + j);
dfMin = Math.Min(dfMin, dfVal);
dfMax = Math.Max(dfMax, dfVal);
rgRealData.Add(dfVal);
}
rgrgRealData[nChIdx] = rgRealData;
}
else
{
for (int j = 0; j < nCount; j++)
{
rgByteData.Add(d.ByteData[nOffset + j]);
}
rgrgByteData[nChIdx] = rgByteData;
}
nOffset += nCount;
}
LockBitmap bmp1 = new LockBitmap(bmp);
try
{
bmp1.LockBits();
for (int y = 0; y < bmp1.Height; y++)
{
for (int x = 0; x < bmp1.Width; x++)
{
Color clr;
int nIdx = (y * bmp1.Width) + x;
if (d.Channels == 1)
{
if (bDataIsReal)
{
if (dfMin >= 0 && dfMax <= 1.0)
{
int nG = clip((int)(rgrgRealData[0][nIdx] * 255.0), 0, 255);
clr = Color.FromArgb(nG, nG, nG);
}
else
{
clr = Color.FromArgb((int)rgrgRealData[0][nIdx]);
}
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
int nR = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nG = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nB = clip((int)rgrgByteData[0][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
}
}
else
{
if (bDataIsReal)
{
int nR = clip((int)rgrgRealData[0][nIdx], 0, 255);
int nG = clip((int)rgrgRealData[1][nIdx], 0, 255);
int nB = clip((int)rgrgRealData[2][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
int nR = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nG = clip((int)rgrgByteData[1][nIdx], 0, 255);
int nB = clip((int)rgrgByteData[2][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
}
}
bmp1.SetPixel(x, y, clr);
}
}
}
catch (Exception excpt)
{
throw excpt;
}
finally
{
bmp1.UnlockBits();
}
return(bmp);
}
/// <summary>
/// Converts a Datum into an image, optionally using a ColorMapper.
/// </summary>
/// <param name="d">Specifies the Datum to use.</param>
/// <param name="clrMap">Optionally, specifies a color mapper to use when converting each value into a color (default = null, not used).</param>
/// <param name="rgClrOrder">Optionally, specifies the color ordering. Note, this list must have the same number of elements as there are channels.</param>
/// <returns>The Image of the data is returned.</returns>
public static Image GetImage(Datum d, ColorMapper clrMap = null, List <int> rgClrOrder = null)
{
if (d.channels != 1 && d.channels != 3)
{
throw new Exception("Standard images only support either 1 or 3 channels.");
}
Bitmap bmp = new Bitmap(d.width, d.height);
List <byte>[] rgrgByteData = new List <byte> [d.channels];
List <double>[] rgrgRealData = new List <double> [d.channels];
int nOffset = 0;
int nCount = d.height * d.width;
bool bDataIsReal = (d.float_data != null && d.float_data.Length > 0) ? true : false;
for (int i = 0; i < d.channels; i++)
{
List <byte> rgByteData = new List <byte>();
List <double> rgRealData = new List <double>();
int nChIdx = i;
if (rgClrOrder != null)
{
nChIdx = rgClrOrder[i];
}
if (bDataIsReal)
{
for (int j = 0; j < nCount; j++)
{
rgRealData.Add(d.float_data[nOffset + j]);
}
rgrgRealData[nChIdx] = rgRealData;
}
else
{
for (int j = 0; j < nCount; j++)
{
rgByteData.Add(d.data[nOffset + j]);
}
rgrgByteData[nChIdx] = rgByteData;
}
nOffset += nCount;
}
for (int y = 0; y < bmp.Height; y++)
{
for (int x = 0; x < bmp.Width; x++)
{
Color clr;
int nIdx = (y * bmp.Width) + x;
if (d.channels == 1)
{
if (bDataIsReal)
{
clr = Color.FromArgb((int)rgrgRealData[0][nIdx]);
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
clr = Color.FromArgb((int)rgrgByteData[0][nIdx], (int)rgrgByteData[0][nIdx], (int)rgrgByteData[0][nIdx]);
}
}
else
{
if (bDataIsReal)
{
clr = Color.FromArgb((int)rgrgRealData[0][nIdx], (int)rgrgRealData[1][nIdx], (int)rgrgRealData[2][nIdx]);
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
clr = Color.FromArgb((int)rgrgByteData[0][nIdx], (int)rgrgByteData[1][nIdx], (int)rgrgByteData[2][nIdx]);
}
}
bmp.SetPixel(x, y, clr);
}
}
return(bmp);
}
