/// <summary>
/// Returns a bitmap with a gradient colored DistributionArray with the given size.
/// </summary>
/// <param name="heatMapBmp">Bitmap to save the heatmap to.</param>
/// <param name="gradientBmp">Bitmap with gradient colors</param>
/// <param name="size">new bitmap size</param>
/// <param name="distributionArray">fixation distributions array</param>
/// <returns>heat map bitmap</returns>
internal static Bitmap CreateHeatMap(
PaletteBitmap heatMapBmp,
PaletteBitmap gradientBmp,
Size size,
float[,] distributionArray)
{
// get image size
int width = size.Width;
int height = size.Height;
// for each line
for (int y = 0; y < height; y++)
{
// for each pixel
for (int x = 0; x < width; x++)
{
heatMapBmp.SetPixel(x, y, gradientBmp.GetPixel((int)distributionArray[x, y], 0));
}
}
return((Bitmap)heatMapBmp.Image.Clone());
}
/// <summary>
/// This static method creates a heatmap
/// from the brightness of the given b/w image where the colors are
/// set using the given gradient colored bitmap.
/// </summary>
/// <param name="heatMapBmp">A <see cref="PaletteBitmap"/> thats
/// contents should be overwritten with new heatmap</param>
/// <param name="gradientBmp">A <see cref="PaletteBitmap"/> which is gradient
/// colored.</param>
/// <param name="size">The <see cref="Size"/> of the heatmap.</param>
/// <param name="channelFilename">The filename with the b/w image.</param>
/// <returns>A <see cref="Bitmap"/> with the new heat map</returns>
internal static Bitmap CreateHeatMapFromBWImage(
PaletteBitmap heatMapBmp,
PaletteBitmap gradientBmp,
Size size,
string channelFilename)
{
// get heat map size
int newWidth = size.Width;
int newHeight = size.Height;
if (!System.IO.File.Exists(channelFilename))
{
throw new System.IO.FileNotFoundException();
}
// Rescale source image to heat map size.
Bitmap srcImage = (Bitmap)Images.GetImageOfFile(channelFilename);
Bitmap rescaledSrcImage = Images.RescaleImage(new Size(newWidth, newHeight), srcImage, true);
PaletteBitmap output = new PaletteBitmap(rescaledSrcImage);
// for each line
for (int y = 0; y < newHeight; y++)
{
// for each pixel
for (int x = 0; x < newWidth; x++)
{
heatMapBmp.SetPixel(
x,
y,
gradientBmp.GetPixel((int)(output.GetPixel(x, y).GetBrightness() * (NUMCOLORS - 1)), 0));
}
}
return(heatMapBmp.Image);
}
/// <summary>
/// Returns a bitmap with a gradient colored DistributionArray with the given size.
/// </summary>
/// <param name="heatMapBmp">Bitmap to save the heatmap to.</param>
/// <param name="gradientBmp">Bitmap with gradient colors</param>
/// <param name="size">new bitmap size</param>
/// <param name="distributionArray">fixation distributions array</param>
/// <returns>heat map bitmap</returns>
internal static Bitmap CreateHeatMap(
PaletteBitmap heatMapBmp,
PaletteBitmap gradientBmp,
Size size,
float[,] distributionArray)
{
// get image size
int width = size.Width;
int height = size.Height;
// for each line
for (int y = 0; y < height; y++)
{
// for each pixel
for (int x = 0; x < width; x++)
{
heatMapBmp.SetPixel(x, y, gradientBmp.GetPixel((int)distributionArray[x, y], 0));
}
}
return (Bitmap)heatMapBmp.Image.Clone();
}
/// <summary>
/// This static method creates a heatmap
/// from the brightness of the given b/w image where the colors are
/// set using the given gradient colored bitmap.
/// </summary>
/// <param name="heatMapBmp">A <see cref="PaletteBitmap"/> thats
/// contents should be overwritten with new heatmap</param>
/// <param name="gradientBmp">A <see cref="PaletteBitmap"/> which is gradient
/// colored.</param>
/// <param name="size">The <see cref="Size"/> of the heatmap.</param>
/// <param name="channelFilename">The filename with the b/w image.</param>
/// <returns>A <see cref="Bitmap"/> with the new heat map</returns>
internal static Bitmap CreateHeatMapFromBWImage(
PaletteBitmap heatMapBmp,
PaletteBitmap gradientBmp,
Size size,
string channelFilename)
{
// get heat map size
int newWidth = size.Width;
int newHeight = size.Height;
if (!System.IO.File.Exists(channelFilename))
{
throw new System.IO.FileNotFoundException();
}
// Rescale source image to heat map size.
Bitmap srcImage = (Bitmap)Images.GetImageOfFile(channelFilename);
Bitmap rescaledSrcImage = Images.RescaleImage(new Size(newWidth, newHeight), srcImage, true);
PaletteBitmap output = new PaletteBitmap(rescaledSrcImage);
// for each line
for (int y = 0; y < newHeight; y++)
{
// for each pixel
for (int x = 0; x < newWidth; x++)
{
heatMapBmp.SetPixel(
x,
y,
gradientBmp.GetPixel((int)(output.GetPixel(x, y).GetBrightness() * (NUMCOLORS - 1)), 0));
}
}
return heatMapBmp.Image;
}
