public CoreSize BulkVectorConvert()
{
using (Image <Rgba32> image = new Image <Rgba32>(800, 800))
{
using (IBuffer <float> amounts = Configuration.Default.MemoryManager.Allocate <float>(image.Width))
{
amounts.Span.Fill(1);
using (PixelAccessor <Rgba32> pixels = image.Lock())
{
for (int y = 0; y < image.Height; y++)
{
Span <Rgba32> span = pixels.GetRowSpan(y);
this.BulkVectorConvert(span, span, span, amounts.Span);
}
}
return(new CoreSize(image.Width, image.Height));
}
}
}
public CoreSize BulkPixelConvert()
{
using (Image <Rgba32> image = new Image <Rgba32>(800, 800))
{
Buffer <float> amounts = new Buffer <float>(image.Width);
for (int x = 0; x < image.Width; x++)
{
amounts[x] = 1;
}
using (PixelAccessor <Rgba32> pixels = image.Lock())
{
for (int y = 0; y < image.Height; y++)
{
BufferSpan <Rgba32> span = pixels.GetRowSpan(y);
BulkPixelConvert(span, span, span, amounts);
}
}
return(new CoreSize(image.Width, image.Height));
}
}
/// <summary>
/// Looks up color values and builds the image from de-compressed RLE8 data.
/// Compresssed RLE8 stream is uncompressed by <see cref="UncompressRle8(int, Buffer{byte})"/>
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="pixels">The <see cref="PixelAccessor{TPixel}"/> to assign the palette to.</param>
/// <param name="colors">The <see cref="T:byte[]"/> containing the colors.</param>
/// <param name="width">The width of the bitmap.</param>
/// <param name="height">The height of the bitmap.</param>
/// <param name="inverted">Whether the bitmap is inverted.</param>
private void ReadRle8 <TPixel>(PixelAccessor <TPixel> pixels, byte[] colors, int width, int height, bool inverted)
where TPixel : struct, IPixel <TPixel>
{
var color = default(TPixel);
var rgba = default(Rgba32);
using (var buffer = Buffer <byte> .CreateClean(width * height))
{
this.UncompressRle8(width, buffer);
for (int y = 0; y < height; y++)
{
int newY = Invert(y, height, inverted);
Span <TPixel> pixelRow = pixels.GetRowSpan(newY);
for (int x = 0; x < width; x++)
{
rgba.Bgr = Unsafe.As <byte, Bgr24>(ref colors[buffer[(y * width) + x] * 4]);
color.PackFromRgba32(rgba);
pixelRow[x] = color;
}
}
}
}
/// <summary>
/// Reads the 16 bit color palette from the stream
/// </summary>
/// <typeparam name="TPixel">The pixel format.</typeparam>
/// <param name="pixels">The <see cref="PixelAccessor{TPixel}"/> to assign the palette to.</param>
/// <param name="width">The width of the bitmap.</param>
/// <param name="height">The height of the bitmap.</param>
/// <param name="inverted">Whether the bitmap is inverted.</param>
private void ReadRgb16 <TPixel>(PixelAccessor <TPixel> pixels, int width, int height, bool inverted)
where TPixel : struct, IPixel <TPixel>
{
// We divide here as we will store the colors in our floating point format.
const int ScaleR = 8; // 256/32
const int ScaleG = 4; // 256/64
const int ComponentCount = 2;
TPixel color = default(TPixel);
Rgba32 rgba = new Rgba32(0, 0, 0, 255);
using (PixelArea <TPixel> row = new PixelArea <TPixel>(width, ComponentOrder.Xyz))
{
for (int y = 0; y < height; y++)
{
row.Read(this.currentStream);
int newY = Invert(y, height, inverted);
Span <TPixel> pixelRow = pixels.GetRowSpan(newY);
int offset = 0;
for (int x = 0; x < width; x++)
{
short temp = BitConverter.ToInt16(row.Bytes, offset);
rgba.R = (byte)(((temp & Rgb16RMask) >> 11) * ScaleR);
rgba.G = (byte)(((temp & Rgb16GMask) >> 5) * ScaleG);
rgba.B = (byte)((temp & Rgb16BMask) * ScaleR);
color.PackFromRgba32(rgba);
pixelRow[x] = color;
offset += ComponentCount;
}
}
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
if (this.OptimizedApply(source, configuration))
{
return;
}
int height = this.CanvasRectangle.Height;
int width = this.CanvasRectangle.Width;
Matrix3x2 matrix = this.GetCenteredMatrix(source, this.processMatrix);
Rectangle sourceBounds = source.Bounds();
using (var targetPixels = new PixelAccessor <TPixel>(width, height))
{
Parallel.For(
0,
height,
configuration.ParallelOptions,
y =>
{
Span <TPixel> targetRow = targetPixels.GetRowSpan(y);
for (int x = 0; x < width; x++)
{
var transformedPoint = Point.Rotate(new Point(x, y), matrix);
if (sourceBounds.Contains(transformedPoint.X, transformedPoint.Y))
{
targetRow[x] = source[transformedPoint.X, transformedPoint.Y];
}
}
});
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
int kernelYHeight = this.KernelY.Height;
int kernelYWidth = this.KernelY.Width;
int kernelXHeight = this.KernelX.Height;
int kernelXWidth = this.KernelX.Width;
int radiusY = kernelYHeight >> 1;
int radiusX = kernelXWidth >> 1;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int maxY = endY - 1;
int maxX = endX - 1;
using (var targetPixels = new PixelAccessor <TPixel>(source.Width, source.Height))
{
source.CopyTo(targetPixels);
Parallel.For(
startY,
endY,
configuration.ParallelOptions,
y =>
{
Span <TPixel> sourceRow = source.GetPixelRowSpan(y);
Span <TPixel> targetRow = targetPixels.GetRowSpan(y);
for (int x = startX; x < endX; x++)
{
float rX = 0;
float gX = 0;
float bX = 0;
float rY = 0;
float gY = 0;
float bY = 0;
// Apply each matrix multiplier to the color components for each pixel.
for (int fy = 0; fy < kernelYHeight; fy++)
{
int fyr = fy - radiusY;
int offsetY = y + fyr;
offsetY = offsetY.Clamp(0, maxY);
Span <TPixel> sourceOffsetRow = source.GetPixelRowSpan(offsetY);
for (int fx = 0; fx < kernelXWidth; fx++)
{
int fxr = fx - radiusX;
int offsetX = x + fxr;
offsetX = offsetX.Clamp(0, maxX);
var currentColor = sourceOffsetRow[offsetX].ToVector4();
if (fy < kernelXHeight)
{
Vector4 kx = this.KernelX[fy, fx] * currentColor;
rX += kx.X;
gX += kx.Y;
bX += kx.Z;
}
if (fx < kernelYWidth)
{
Vector4 ky = this.KernelY[fy, fx] * currentColor;
rY += ky.X;
gY += ky.Y;
bY += ky.Z;
}
}
}
float red = MathF.Sqrt((rX * rX) + (rY * rY));
float green = MathF.Sqrt((gX * gX) + (gY * gY));
float blue = MathF.Sqrt((bX * bX) + (bY * bY));
ref TPixel pixel = ref targetRow[x];
pixel.PackFromVector4(new Vector4(red, green, blue, sourceRow[x].ToVector4().W));
}
});
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override void OnApply(ImageBase <TPixel> source, Rectangle sourceRectangle)
{
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
TPixel vignetteColor = this.VignetteColor;
Vector2 centre = Rectangle.Center(sourceRectangle).ToVector2();
float rX = this.RadiusX > 0 ? MathF.Min(this.RadiusX, sourceRectangle.Width * .5F) : sourceRectangle.Width * .5F;
float rY = this.RadiusY > 0 ? MathF.Min(this.RadiusY, sourceRectangle.Height * .5F) : sourceRectangle.Height * .5F;
float maxDistance = MathF.Sqrt((rX * rX) + (rY * rY));
// Align start/end positions.
int minX = Math.Max(0, startX);
int maxX = Math.Min(source.Width, endX);
int minY = Math.Max(0, startY);
int maxY = Math.Min(source.Height, endY);
// Reset offset if necessary.
if (minX > 0)
{
startX = 0;
}
if (minY > 0)
{
startY = 0;
}
int width = maxX - minX;
using (Buffer <TPixel> rowColors = new Buffer <TPixel>(width))
using (PixelAccessor <TPixel> sourcePixels = source.Lock())
{
for (int i = 0; i < width; i++)
{
rowColors[i] = vignetteColor;
}
Parallel.For(
minY,
maxY,
this.ParallelOptions,
y =>
{
using (Buffer <float> amounts = new Buffer <float>(width))
{
int offsetY = y - startY;
int offsetX = minX - startX;
for (int i = 0; i < width; i++)
{
float distance = Vector2.Distance(centre, new Vector2(i + offsetX, offsetY));
amounts[i] = (this.options.BlendPercentage * (.9F * (distance / maxDistance))).Clamp(0, 1);
}
Span <TPixel> destination = sourcePixels.GetRowSpan(offsetY).Slice(offsetX, width);
this.blender.Blend(destination, destination, rowColors, amounts);
}
});
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
int kernelLength = this.KernelXY.Height;
int radius = kernelLength >> 1;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int maxY = endY - 1;
int maxX = endX - 1;
using (var targetPixels = new PixelAccessor <TPixel>(source.Width, source.Height))
{
source.CopyTo(targetPixels);
Parallel.For(
startY,
endY,
configuration.ParallelOptions,
y =>
{
Span <TPixel> sourceRow = source.GetPixelRowSpan(y);
Span <TPixel> targetRow = targetPixels.GetRowSpan(y);
for (int x = startX; x < endX; x++)
{
float red = 0;
float green = 0;
float blue = 0;
// Apply each matrix multiplier to the color components for each pixel.
for (int fy = 0; fy < kernelLength; fy++)
{
int fyr = fy - radius;
int offsetY = y + fyr;
offsetY = offsetY.Clamp(0, maxY);
Span <TPixel> sourceOffsetRow = source.GetPixelRowSpan(offsetY);
for (int fx = 0; fx < kernelLength; fx++)
{
int fxr = fx - radius;
int offsetX = x + fxr;
offsetX = offsetX.Clamp(0, maxX);
var currentColor = sourceOffsetRow[offsetX].ToVector4();
currentColor *= this.KernelXY[fy, fx];
red += currentColor.X;
green += currentColor.Y;
blue += currentColor.Z;
}
}
ref TPixel pixel = ref targetRow[x];
pixel.PackFromVector4(new Vector4(red, green, blue, sourceRow[x].ToVector4().W));
}
});
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override unsafe void OnApply(ImageBase <TColor> source, Rectangle sourceRectangle)
{
// Jump out, we'll deal with that later.
if (source.Width == this.Width && source.Height == this.Height && sourceRectangle == this.ResizeRectangle)
{
return;
}
int width = this.Width;
int height = this.Height;
int sourceX = sourceRectangle.X;
int sourceY = sourceRectangle.Y;
int startY = this.ResizeRectangle.Y;
int endY = this.ResizeRectangle.Bottom;
int startX = this.ResizeRectangle.X;
int endX = this.ResizeRectangle.Right;
int minX = Math.Max(0, startX);
int maxX = Math.Min(width, endX);
int minY = Math.Max(0, startY);
int maxY = Math.Min(height, endY);
if (this.Sampler is NearestNeighborResampler)
{
// Scaling factors
float widthFactor = sourceRectangle.Width / (float)this.ResizeRectangle.Width;
float heightFactor = sourceRectangle.Height / (float)this.ResizeRectangle.Height;
using (PixelAccessor <TColor> targetPixels = new PixelAccessor <TColor>(width, height))
{
using (PixelAccessor <TColor> sourcePixels = source.Lock())
{
Parallel.For(
minY,
maxY,
this.ParallelOptions,
y =>
{
// Y coordinates of source points
int originY = (int)(((y - startY) * heightFactor) + sourceY);
for (int x = minX; x < maxX; x++)
{
// X coordinates of source points
targetPixels[x, y] = sourcePixels[(int)(((x - startX) * widthFactor) + sourceX), originY];
}
});
}
// Break out now.
source.SwapPixelsBuffers(targetPixels);
return;
}
}
// Interpolate the image using the calculated weights.
// A 2-pass 1D algorithm appears to be faster than splitting a 1-pass 2D algorithm
// First process the columns. Since we are not using multiple threads startY and endY
// are the upper and lower bounds of the source rectangle.
// TODO: Using a transposed variant of 'firstPassPixels' could eliminate the need for the WeightsWindow.ComputeWeightedColumnSum() method, and improve speed!
using (PixelAccessor <TColor> targetPixels = new PixelAccessor <TColor>(width, height))
{
using (PixelAccessor <TColor> sourcePixels = source.Lock())
using (Buffer2D <Vector4> firstPassPixels = new Buffer2D <Vector4>(width, source.Height))
{
firstPassPixels.Clear();
Parallel.For(
0,
sourceRectangle.Bottom,
this.ParallelOptions,
y =>
{
// TODO: Without Parallel.For() this buffer object could be reused:
using (Buffer <Vector4> tempRowBuffer = new Buffer <Vector4>(sourcePixels.Width))
{
BufferSpan <TColor> sourceRow = sourcePixels.GetRowSpan(y);
BulkPixelOperations <TColor> .Instance.ToVector4(
sourceRow,
tempRowBuffer,
sourceRow.Length);
if (this.Compand)
{
for (int x = minX; x < maxX; x++)
{
WeightsWindow window = this.HorizontalWeights.Weights[x - startX];
firstPassPixels[x, y] = window.ComputeExpandedWeightedRowSum(tempRowBuffer);
}
}
else
{
for (int x = minX; x < maxX; x++)
{
WeightsWindow window = this.HorizontalWeights.Weights[x - startX];
firstPassPixels[x, y] = window.ComputeWeightedRowSum(tempRowBuffer);
}
}
}
});
// Now process the rows.
Parallel.For(
minY,
maxY,
this.ParallelOptions,
y =>
{
// Ensure offsets are normalised for cropping and padding.
WeightsWindow window = this.VerticalWeights.Weights[y - startY];
if (this.Compand)
{
for (int x = 0; x < width; x++)
{
// Destination color components
Vector4 destination = window.ComputeWeightedColumnSum(firstPassPixels, x);
destination = destination.Compress();
TColor d = default(TColor);
d.PackFromVector4(destination);
targetPixels[x, y] = d;
}
}
else
{
for (int x = 0; x < width; x++)
{
// Destination color components
Vector4 destination = window.ComputeWeightedColumnSum(firstPassPixels, x);
TColor d = default(TColor);
d.PackFromVector4(destination);
targetPixels[x, y] = d;
}
}
});
}
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override void OnApply(ImageBase <TPixel> source, Rectangle sourceRectangle)
{
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int radius = this.BrushSize >> 1;
int levels = this.Levels;
// Align start/end positions.
int minX = Math.Max(0, startX);
int maxX = Math.Min(source.Width, endX);
int minY = Math.Max(0, startY);
int maxY = Math.Min(source.Height, endY);
// Reset offset if necessary.
if (minX > 0)
{
startX = 0;
}
using (var targetPixels = new PixelAccessor <TPixel>(source.Width, source.Height))
{
source.CopyTo(targetPixels);
Parallel.For(
minY,
maxY,
this.ParallelOptions,
y =>
{
Span <TPixel> sourceRow = source.GetRowSpan(y);
Span <TPixel> targetRow = targetPixels.GetRowSpan(y);
for (int x = startX; x < endX; x++)
{
int maxIntensity = 0;
int maxIndex = 0;
int[] intensityBin = new int[levels];
float[] redBin = new float[levels];
float[] blueBin = new float[levels];
float[] greenBin = new float[levels];
for (int fy = 0; fy <= radius; fy++)
{
int fyr = fy - radius;
int offsetY = y + fyr;
offsetY = offsetY.Clamp(0, maxY);
Span <TPixel> sourceOffsetRow = source.GetRowSpan(offsetY);
for (int fx = 0; fx <= radius; fx++)
{
int fxr = fx - radius;
int offsetX = x + fxr;
offsetX = offsetX.Clamp(0, maxX);
var vector = sourceOffsetRow[offsetX].ToVector4();
float sourceRed = vector.X;
float sourceBlue = vector.Z;
float sourceGreen = vector.Y;
int currentIntensity = (int)MathF.Round((sourceBlue + sourceGreen + sourceRed) / 3F * (levels - 1));
intensityBin[currentIntensity] += 1;
blueBin[currentIntensity] += sourceBlue;
greenBin[currentIntensity] += sourceGreen;
redBin[currentIntensity] += sourceRed;
if (intensityBin[currentIntensity] > maxIntensity)
{
maxIntensity = intensityBin[currentIntensity];
maxIndex = currentIntensity;
}
}
float red = MathF.Abs(redBin[maxIndex] / maxIntensity);
float green = MathF.Abs(greenBin[maxIndex] / maxIntensity);
float blue = MathF.Abs(blueBin[maxIndex] / maxIntensity);
ref TPixel pixel = ref targetRow[x];
pixel.PackFromVector4(new Vector4(red, green, blue, sourceRow[x].ToVector4().W));
}
}
});
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
if (this.BrushSize <= 0 || this.BrushSize > source.Height || this.BrushSize > source.Width)
{
throw new ArgumentOutOfRangeException(nameof(this.BrushSize));
}
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int maxY = endY - 1;
int maxX = endX - 1;
int radius = this.BrushSize >> 1;
int levels = this.Levels;
using (var targetPixels = new PixelAccessor <TPixel>(source.Width, source.Height))
{
source.CopyTo(targetPixels);
Parallel.For(
startY,
maxY,
configuration.ParallelOptions,
y =>
{
Span <TPixel> sourceRow = source.GetPixelRowSpan(y);
Span <TPixel> targetRow = targetPixels.GetRowSpan(y);
for (int x = startX; x < endX; x++)
{
int maxIntensity = 0;
int maxIndex = 0;
int[] intensityBin = new int[levels];
float[] redBin = new float[levels];
float[] blueBin = new float[levels];
float[] greenBin = new float[levels];
for (int fy = 0; fy <= radius; fy++)
{
int fyr = fy - radius;
int offsetY = y + fyr;
offsetY = offsetY.Clamp(0, maxY);
Span <TPixel> sourceOffsetRow = source.GetPixelRowSpan(offsetY);
for (int fx = 0; fx <= radius; fx++)
{
int fxr = fx - radius;
int offsetX = x + fxr;
offsetX = offsetX.Clamp(0, maxX);
var vector = sourceOffsetRow[offsetX].ToVector4();
float sourceRed = vector.X;
float sourceBlue = vector.Z;
float sourceGreen = vector.Y;
int currentIntensity = (int)Math.Round((sourceBlue + sourceGreen + sourceRed) / 3F * (levels - 1));
intensityBin[currentIntensity] += 1;
blueBin[currentIntensity] += sourceBlue;
greenBin[currentIntensity] += sourceGreen;
redBin[currentIntensity] += sourceRed;
if (intensityBin[currentIntensity] > maxIntensity)
{
maxIntensity = intensityBin[currentIntensity];
maxIndex = currentIntensity;
}
}
float red = Math.Abs(redBin[maxIndex] / maxIntensity);
float green = Math.Abs(greenBin[maxIndex] / maxIntensity);
float blue = Math.Abs(blueBin[maxIndex] / maxIntensity);
ref TPixel pixel = ref targetRow[x];
pixel.PackFromVector4(new Vector4(red, green, blue, sourceRow[x].ToVector4().W));
}
}
});
source.SwapPixelsBuffers(targetPixels);
}
}
/// <inheritdoc/>
protected override void OnApply(ImageBase <TPixel> source, Rectangle sourceRectangle)
{
using (PixelAccessor <TPixel> sourcePixels = source.Lock())
using (PenApplicator <TPixel> applicator = this.Pen.CreateApplicator(sourcePixels, this.Path.Bounds, this.Options))
{
Rectangle rect = RectangleF.Ceiling(applicator.RequiredRegion);
int polyStartY = rect.Y - PaddingFactor;
int polyEndY = rect.Bottom + PaddingFactor;
int startX = rect.X - PaddingFactor;
int endX = rect.Right + PaddingFactor;
int minX = Math.Max(sourceRectangle.Left, startX);
int maxX = Math.Min(sourceRectangle.Right, endX);
int minY = Math.Max(sourceRectangle.Top, polyStartY);
int maxY = Math.Min(sourceRectangle.Bottom, polyEndY);
// Align start/end positions.
minX = Math.Max(0, minX);
maxX = Math.Min(source.Width, maxX);
minY = Math.Max(0, minY);
maxY = Math.Min(source.Height, maxY);
// Reset offset if necessary.
if (minX > 0)
{
startX = 0;
}
if (minY > 0)
{
polyStartY = 0;
}
int width = maxX - minX;
PixelBlender <TPixel> blender = PixelOperations <TPixel> .Instance.GetPixelBlender(this.Options.BlenderMode);
Parallel.For(
minY,
maxY,
this.ParallelOptions,
y =>
{
int offsetY = y - polyStartY;
using (Buffer <float> amount = new Buffer <float>(width))
using (Buffer <TPixel> colors = new Buffer <TPixel>(width))
{
for (int i = 0; i < width; i++)
{
int x = i + minX;
int offsetX = x - startX;
PointInfo info = this.Path.GetPointInfo(offsetX, offsetY);
ColoredPointInfo <TPixel> color = applicator.GetColor(offsetX, offsetY, info);
amount[i] = (this.Opacity(color.DistanceFromElement) * this.Options.BlendPercentage).Clamp(0, 1);
colors[i] = color.Color;
}
BufferSpan <TPixel> destination = sourcePixels.GetRowSpan(offsetY).Slice(minX - startX, width);
blender.Blend(destination, destination, colors, amount);
}
});
}
}
