public override void ApplyFilter(int[] pixels, int width, int height, Vector[,] field)
{
double minBrightness = Double.PositiveInfinity;
double maxBrightness = Double.NegativeInfinity;
for (int i = 0; i < pixels.Length; i++)
{
int x = i % width;
int y = i / width;
int argb = pixels[i];
var color = HsbColor.FromArgb(argb);
var brightness = color.Brightness;
if (brightness < minBrightness)
{
minBrightness = brightness;
}
if (brightness > maxBrightness)
{
maxBrightness = brightness;
}
}
for (int i = 0; i < pixels.Length; i++)
{
int argb = pixels[i];
var color = HsbColor.FromArgb(argb);
var brightness = color.Brightness;
double ratio = (brightness - minBrightness) / (maxBrightness - minBrightness);
color.Brightness = ratio;
pixels[i] = color.ToArgb();
}
}
public override int[] ApplyFilter(int[] pixels, int width, int height, Vector[,] field)
{
double maxLength = Double.NegativeInfinity;
double minLength = Double.PositiveInfinity;
// determine min and max length
// this works faster than parallel enumerable version.
for (int ix = 0; ix < width; ix++)
{
for (int iy = 0; iy < height; iy++)
{
var length = field[ix, iy].Length;
if (length > maxLength)
{
maxLength = length;
}
if (length < minLength)
{
minLength = length;
}
}
}
int[] resultPixels = new int[width * height];
pixels.CopyTo(resultPixels, 0);
// attempt to avoid exception on line
// 'HsbColor color = HsbColor.FromArgb(pixels[i]);'
if (pixels.Length == 0)
{
return(pixels);
}
Parallel.For(0, width * height, i =>
{
HsbColor color = HsbColor.FromArgb(pixels[i]);
int ix = i % width;
int iy = i / width;
var length = field[ix, height - 1 - iy].Length;
var ratio = (length - minLength) / (maxLength - minLength);
if (ratio.IsNaN())
{
ratio = 0;
}
var paletteColor = Palette.GetColor(ratio).ToHsbColor();
color.Hue = paletteColor.Hue;
color.Saturation = paletteColor.Saturation;
resultPixels[i] = color.ToArgb();
});
return(resultPixels);
}
public override void ApplyFilter(int[] pixels, int width, int height, Vector[,] field)
{
double maxLength = Double.NegativeInfinity;
double minLength = Double.PositiveInfinity;
for (int ix = 0; ix < width; ix++)
{
for (int iy = 0; iy < height; iy++)
{
var length = field[ix, iy].Length;
if (length > maxLength)
{
maxLength = length;
}
if (length < minLength)
{
minLength = length;
}
}
}
for (int i = 0; i < width * height; i++)
{
HsbColor color = HsbColor.FromArgb(pixels[i]);
int ix = i % width;
int iy = i / width;
var length = field[ix, iy].Length;
var ratio = (length - minLength) / (maxLength - minLength);
if (ratio.IsNaN())
{
ratio = 0;
}
var paletteColor = Palette.GetColor(ratio).ToHsbColor();
color.Hue = paletteColor.Hue;
color.Saturation = paletteColor.Saturation;
pixels[i] = color.ToArgb();
}
}
public override int[] ApplyFilter(int[] pixels, int width, int height, Vector[,] field)
{
double minBrightness = Double.PositiveInfinity;
double maxBrightness = Double.NegativeInfinity;
for (int i = 0; i < pixels.Length; i++)
{
int argb = pixels[i];
var color = HsbColor.FromArgb(argb);
var brightness = color.Brightness;
if (brightness < minBrightness)
{
minBrightness = brightness;
}
if (brightness > maxBrightness)
{
maxBrightness = brightness;
}
}
if (minBrightness == 0 || maxBrightness == 1)
{
return(pixels);
}
Parallel.For(0, pixels.Length, i =>
{
int argb = pixels[i];
var color = HsbColor.FromArgb(argb);
var brightness = color.Brightness;
double ratio = (brightness - minBrightness) / (maxBrightness - minBrightness);
color.Brightness = ratio;
pixels[i] = color.ToArgb();
});
return(pixels);
}