private static ConvolutionColor GetColor(DataSource dataSource, int[] pixels, IntPoint coordinate, Point point)
{
int x = coordinate.X;
int y = coordinate.Y;
var x0 = dataSource.XCoordinates[x];
var x1 = dataSource.XCoordinates[x + 1];
var y0 = dataSource.YCoordinates[y];
var y1 = dataSource.YCoordinates[y + 1];
double xRatio = GetRatio(x0, x1, point.X);
double yRatio = GetRatio(y0, y1, point.Y);
int width = dataSource.Width;
var v00 = pixels[x + y * width];
var v01 = pixels[x + 1 + y * width];
var v10 = pixels[x + (y + 1) * width];
var v11 = pixels[x + 1 + (y + 1) * width];
//var result = (int)(((1 - xRatio) * v00 + xRatio * v10 +
// (1 - xRatio) * v01 + xRatio * v11 +
// (1 - yRatio) * v00 + yRatio * v01 +
// (1 - yRatio) * v10 + yRatio * v11) * 0.25);
var result = v00;
return(ConvolutionColor.FromArgb(result));
}
private int[] CreateConvolutionArray(int width, int height, int[] pixels)
{
var dataSource = DataSource;
const int L = 20;
int[] effectivePixels = new int[width * height];
Parallel.For(0, width * height, i =>
{
int ix = i % width;
int iy = i / width;
double sum = 1;
double positiveDistance = 0;
Point position = dataSource.Grid[ix, iy];
ConvolutionColor color = ConvolutionColor.FromArgb(pixels[ix + width * iy]);
int counter = 0;
do
{
counter++;
var vector = dataSource.Data[ix, iy];
vector.Normalize();
position += vector;
positiveDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
ix = coordinate.X;
iy = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[ix + iy * width]); // *1 / Math.Sqrt(counter);
color += currentColor;
sum += 1;
}
else
{
break;
}
}while (positiveDistance < L || counter < 50);
var negativeDistance = 0.0;
counter = 0;
do
{
counter++;
var vector = dataSource.Data[ix, iy];
vector.Normalize();
position -= vector;
negativeDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
ix = coordinate.X;
iy = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[ix + iy * width]); // * 1 / Math.Sqrt(counter);
color += currentColor;
sum += 1;
}
else
{
break;
}
}while (negativeDistance < L || counter < 50);
color /= sum;
effectivePixels[i] = color.ToArgb();
});
return(effectivePixels);
}
private int[] CreateConvolutionArray(int width, int height, int[] pixels)
{
var dataSource = this.GetValueSync <DataSource>(DataSourceProperty);;
const int Length = 20;
const int maxIterations = 20;
int pixelsCount = width * height;
int[] effectivePixels = new int[pixelsCount];
pixels.CopyTo(effectivePixels, 0);
System.Threading.Tasks.Parallel.For(0, pixelsCount, i =>
{
if (i % 1000 == 0)
{
UpdateBitmap(effectivePixels);
}
int ix = i % width;
int iy = i / width;
double sumDistance = 1;
double positiveDistance = 0;
Point position = dataSource.Grid[ix, iy];
ConvolutionColor color = ConvolutionColor.FromArgb(pixels[ix + width * iy]);
int iterationsCounter = 0;
do
{
int i_x = ix;
int i_y = iy;
iterationsCounter++;
Vector vector =
//GetVector(dataSource, new IntPoint(i_x, i_y), position);
dataSource.Data[i_x, i_y];
if (vector.Length > 0)
{
vector.Normalize();
}
position += vector;
positiveDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
i_x = coordinate.X;
i_y = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[i_x + i_y * width]);
color += currentColor;
sumDistance += 1;
}
else
{
break;
}
}while (positiveDistance < Length && iterationsCounter < maxIterations);
var negativeDistance = 0.0;
iterationsCounter = 0;
do
{
int i_x = ix;
int i_y = iy;
iterationsCounter++;
Vector vector =
//GetVector(dataSource, new IntPoint(i_x, i_y), position);
dataSource.Data[i_x, i_y];
if (vector.Length > 0)
{
vector.Normalize();
}
position -= vector;
negativeDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
i_x = coordinate.X;
i_y = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[i_x + i_y * width]);
color += currentColor;
sumDistance += 1;
}
else
{
break;
}
}while (negativeDistance < Length && iterationsCounter < maxIterations);
color /= sumDistance;
effectivePixels[i] = color.ToArgb();
});
return(effectivePixels);
}
private int[] CreateConvolutionArray(int width, int height, int[] pixels, ParallelOptions parallelOptions, out bool cancelled)
{
cancelled = false;
var dataSource = this.GetValueSync<DataSource>(DataSourceProperty);
if (dataSource == null)
{
return new int[0];
}
const int Length = 20;
const int maxIterations = 20;
int pixelsCount = width * height;
int[] effectivePixels = new int[pixelsCount];
if (parallelOptions.CancellationToken.IsCancellationRequested)
{
cancelled = true;
return null;
}
pixels.CopyTo(effectivePixels, 0);
var bounds = dataSource.GetGridBounds();
try
{
#if p
Parallel.For(0, pixelsCount, parallelOptions, (i, loopState) =>
{
if (i % 1000 == 0 && parallelOptions.CancellationToken.IsCancellationRequested)
{
loopState.Break();
}
#else
for (int i = 0; i < pixelsCount; i++)
{
#endif
if (i % 2000 == 0)
UpdateBitmap(effectivePixels);
int ix = i % width;
int iy = i / width;
double sumDistance = 1;
double positiveDistance = 0;
Point position = dataSource.Grid[ix, iy];
int intColor = Colors.Transparent.ToArgb();
Vector v = dataSource.Data[ix, iy];
if (v != missingvalue)
{
ConvolutionColor color = ConvolutionColor.FromArgb(pixels[ix + width * iy]);
int iterationsCounter = 0;
do
{
int i_x = ix;
int i_y = iy;
iterationsCounter++;
Vector vector =
//GetVector(dataSource, new IntPoint(i_x, i_y), position);
dataSource.Data[i_x, i_y];
if (vector.Length > 0)
vector.Normalize();
vector = vector.ChangeLength(bounds.Width, bounds.Height, width, height);
position += vector;
positiveDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
i_x = coordinate.X;
i_y = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[i_x + i_y * width]);
color += currentColor;
sumDistance += 1;
}
else
break;
}
while (positiveDistance < Length && iterationsCounter < maxIterations);
var negativeDistance = 0.0;
iterationsCounter = 0;
do
{
int i_x = ix;
int i_y = iy;
iterationsCounter++;
Vector vector =
//GetVector(dataSource, new IntPoint(i_x, i_y), position);
dataSource.Data[i_x, i_y];
if (vector.Length > 0)
vector.Normalize();
position -= vector;
negativeDistance += vector.Length;
IntPoint coordinate;
bool found = GetCoordinate(dataSource, position, out coordinate);
if (found)
{
i_x = coordinate.X;
i_y = coordinate.Y;
var currentColor = ConvolutionColor.FromArgb(pixels[i_x + i_y * width]);
color += currentColor;
sumDistance += 1;
}
else
break;
}
while (negativeDistance < Length && iterationsCounter < maxIterations);
color /= sumDistance;
intColor = color.ToArgb();
}
effectivePixels[(height - 1 - iy) * width + ix] = intColor;
}
#if p
);
#endif
}
catch (OperationCanceledException)
{
cancelled = true;
}
return effectivePixels;
}
