/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
// this is a no-op as we have processes all as an image, we should be able to pass out of before email apply a skip frames outcome
Draw(this.textRenderer.FillOperations, this.Brush);
Draw(this.textRenderer.OutlineOperations, this.Pen?.StrokeFill);
void Draw(List <DrawingOperation> operations, IBrush brush)
{
if (operations?.Count > 0)
{
using (BrushApplicator <TPixel> app = brush.CreateApplicator(this.Configuration, this.textRenderer.Options, source, this.SourceRectangle))
{
foreach (DrawingOperation operation in operations)
{
Buffer2D <float> buffer = operation.Map;
int startY = operation.Location.Y;
int startX = operation.Location.X;
int offsetSpan = 0;
if (startX + buffer.Height < 0)
{
continue;
}
if (startX + buffer.Width < 0)
{
continue;
}
if (startX < 0)
{
offsetSpan = -startX;
startX = 0;
}
if (startX >= source.Width)
{
continue;
}
int firstRow = 0;
if (startY < 0)
{
firstRow = -startY;
}
int maxHeight = source.Height - startY;
int end = Math.Min(operation.Map.Height, maxHeight);
for (int row = firstRow; row < end; row++)
{
int y = startY + row;
Span <float> span = buffer.GetRowSpan(row).Slice(offsetSpan);
app.Apply(span, startX, y);
}
}
}
}
}
}
public PatternPenApplicator(PixelAccessor <TColor> sourcePixels, IBrush <TColor> brush, RectangleF region, float width, float[] pattern)
{
this.brush = brush.CreateApplicator(sourcePixels, region);
this.halfWidth = width / 2;
this.totalLength = 0;
this.pattern = new float[pattern.Length + 1];
this.pattern[0] = 0;
for (int i = 0; i < pattern.Length; i++)
{
this.totalLength += pattern[i] * width;
this.pattern[i + 1] = this.totalLength;
}
this.RequiredRegion = RectangleF.Outset(region, width);
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
// 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 (var amount = new Buffer <float>(width))
using (BrushApplicator <TPixel> applicator = this.brush.CreateApplicator(source, sourceRectangle, this.options))
{
for (int i = 0; i < width; i++)
{
amount[i] = this.options.BlendPercentage;
}
Parallel.For(
minY,
maxY,
configuration.ParallelOptions,
y =>
{
int offsetY = y - startY;
int offsetX = minX - startX;
applicator.Apply(amount, offsetX, offsetY);
});
}
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
// 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 (IBuffer <float> amount = source.MemoryManager.Allocate <float>(width))
using (BrushApplicator <TPixel> applicator = this.brush.CreateApplicator(
source,
sourceRectangle,
this.options))
{
amount.Span.Fill(1f);
Parallel.For(
minY,
maxY,
configuration.ParallelOptions,
y =>
{
int offsetY = y - startY;
int offsetX = minX - startX;
applicator.Apply(amount.Span, offsetX, offsetY);
});
}
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
var interest = Rectangle.Intersect(this.SourceRectangle, source.Bounds());
if (interest.Width == 0 || interest.Height == 0)
{
return;
}
Configuration configuration = this.Configuration;
IBrush brush = this.definition.Brush;
GraphicsOptions options = this.definition.Options;
// If there's no reason for blending, then avoid it.
if (this.IsSolidBrushWithoutBlending(out SolidBrush solidBrush))
{
ParallelExecutionSettings parallelSettings = ParallelExecutionSettings.FromConfiguration(configuration)
.MultiplyMinimumPixelsPerTask(4);
TPixel colorPixel = solidBrush.Color.ToPixel <TPixel>();
var solidOperation = new SolidBrushRowIntervalOperation(interest, source, colorPixel);
ParallelRowIterator.IterateRowIntervals(
interest,
parallelSettings,
in solidOperation);
return;
}
using IMemoryOwner <float> amount = configuration.MemoryAllocator.Allocate <float>(interest.Width);
using BrushApplicator <TPixel> applicator = brush.CreateApplicator(
configuration,
options,
source,
interest);
amount.Memory.Span.Fill(1F);
var operation = new RowIntervalOperation(interest, applicator, amount.Memory);
ParallelRowIterator.IterateRowIntervals(
configuration,
interest,
in operation);
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
Region region = this.Region;
Rectangle rect = region.Bounds;
// Align start/end positions.
int minX = Math.Max(0, rect.Left);
int maxX = Math.Min(source.Width, rect.Right);
int minY = Math.Max(0, rect.Top);
int maxY = Math.Min(source.Height, rect.Bottom);
if (minX >= maxX)
{
return; // no effect inside image;
}
if (minY >= maxY)
{
return; // no effect inside image;
}
int maxIntersections = region.MaxIntersections;
float subpixelCount = 4;
// we need to offset the pixel grid to account for when we outline a path.
// basically if the line is [1,2] => [3,2] then when outlining at 1 we end up with a region of [0.5,1.5],[1.5, 1.5],[3.5,2.5],[2.5,2.5]
// and this can cause missed fills when not using antialiasing.so we offset the pixel grid by 0.5 in the x & y direction thus causing the#
// region to align with the pixel grid.
float offset = 0.5f;
if (this.Options.Antialias)
{
offset = 0f; // we are antialiasing skip offsetting as real antialiasing should take care of offset.
subpixelCount = this.Options.AntialiasSubpixelDepth;
if (subpixelCount < 4)
{
subpixelCount = 4;
}
}
using (BrushApplicator <TPixel> applicator = this.Brush.CreateApplicator(source, rect, this.Options))
{
int scanlineWidth = maxX - minX;
using (IMemoryOwner <float> bBuffer = source.MemoryAllocator.Allocate <float>(maxIntersections))
using (IMemoryOwner <float> bScanline = source.MemoryAllocator.Allocate <float>(scanlineWidth))
{
bool scanlineDirty = true;
float subpixelFraction = 1f / subpixelCount;
float subpixelFractionPoint = subpixelFraction / subpixelCount;
Span <float> buffer = bBuffer.GetSpan();
Span <float> scanline = bScanline.GetSpan();
bool isSolidBrushWithoutBlending = this.IsSolidBrushWithoutBlending(out SolidBrush <TPixel> solidBrush);
for (int y = minY; y < maxY; y++)
{
if (scanlineDirty)
{
scanline.Clear();
scanlineDirty = false;
}
float yPlusOne = y + 1;
for (float subPixel = (float)y; subPixel < yPlusOne; subPixel += subpixelFraction)
{
int pointsFound = region.Scan(subPixel + offset, buffer, configuration);
if (pointsFound == 0)
{
// nothing on this line, skip
continue;
}
QuickSort.Sort(buffer.Slice(0, pointsFound));
for (int point = 0; point < pointsFound; point += 2)
{
// points will be paired up
float scanStart = buffer[point] - minX;
float scanEnd = buffer[point + 1] - minX;
int startX = (int)MathF.Floor(scanStart + offset);
int endX = (int)MathF.Floor(scanEnd + offset);
if (startX >= 0 && startX < scanline.Length)
{
for (float x = scanStart; x < startX + 1; x += subpixelFraction)
{
scanline[startX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
if (endX >= 0 && endX < scanline.Length)
{
for (float x = endX; x < scanEnd; x += subpixelFraction)
{
scanline[endX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
int nextX = startX + 1;
endX = Math.Min(endX, scanline.Length); // reduce to end to the right edge
nextX = Math.Max(nextX, 0);
for (int x = nextX; x < endX; x++)
{
scanline[x] += subpixelFraction;
scanlineDirty = true;
}
}
}
if (scanlineDirty)
{
if (!this.Options.Antialias)
{
bool hasOnes = false;
bool hasZeros = false;
for (int x = 0; x < scanlineWidth; x++)
{
if (scanline[x] >= 0.5)
{
scanline[x] = 1;
hasOnes = true;
}
else
{
scanline[x] = 0;
hasZeros = true;
}
}
if (isSolidBrushWithoutBlending && hasOnes != hasZeros)
{
if (hasOnes)
{
source.GetPixelRowSpan(y).Slice(minX, scanlineWidth).Fill(solidBrush.Color);
}
continue;
}
}
applicator.Apply(scanline, minX, y);
}
}
}
}
}
public SolidPenApplicator(PixelAccessor <TColor> sourcePixels, IBrush <TColor> brush, RectangleF region, float width)
{
this.brush = brush.CreateApplicator(sourcePixels, region);
this.halfWidth = width / 2;
this.RequiredRegion = RectangleF.Outset(region, width);
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
Rectangle sourceRectangle = this.SourceRectangle;
Configuration configuration = this.Configuration;
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
// 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);
int width = maxX - minX;
var workingRect = Rectangle.FromLTRB(minX, minY, maxX, maxY);
IBrush brush = this.definition.Brush;
GraphicsOptions options = this.definition.Options;
// If there's no reason for blending, then avoid it.
if (this.IsSolidBrushWithoutBlending(out SolidBrush solidBrush))
{
ParallelExecutionSettings parallelSettings = configuration.GetParallelSettings().MultiplyMinimumPixelsPerTask(4);
TPixel colorPixel = solidBrush.Color.ToPixel <TPixel>();
ParallelHelper.IterateRows(
workingRect,
parallelSettings,
rows =>
{
for (int y = rows.Min; y < rows.Max; y++)
{
source.GetPixelRowSpan(y).Slice(minX, width).Fill(colorPixel);
}
});
}
else
{
// Reset offset if necessary.
if (minX > 0)
{
startX = 0;
}
if (minY > 0)
{
startY = 0;
}
using (IMemoryOwner <float> amount = source.MemoryAllocator.Allocate <float>(width))
using (BrushApplicator <TPixel> applicator = brush.CreateApplicator(
source,
sourceRectangle,
options))
{
amount.GetSpan().Fill(1f);
ParallelHelper.IterateRows(
workingRect,
configuration,
rows =>
{
for (int y = rows.Min; y < rows.Max; y++)
{
int offsetY = y - startY;
int offsetX = minX - startX;
applicator.Apply(amount.GetSpan(), offsetX, offsetY);
}
});
}
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
Region region = this.Region;
Rectangle rect = region.Bounds;
// Align start/end positions.
int minX = Math.Max(0, rect.Left);
int maxX = Math.Min(source.Width, rect.Right);
int minY = Math.Max(0, rect.Top);
int maxY = Math.Min(source.Height, rect.Bottom);
if (minX >= maxX)
{
return; // no effect inside image;
}
if (minY >= maxY)
{
return; // no effect inside image;
}
ArrayPool <float> arrayPool = ArrayPool <float> .Shared;
int maxIntersections = region.MaxIntersections;
float subpixelCount = 4;
if (this.Options.Antialias)
{
subpixelCount = this.Options.AntialiasSubpixelDepth;
if (subpixelCount < 4)
{
subpixelCount = 4;
}
}
using (BrushApplicator <TPixel> applicator = this.Brush.CreateApplicator(source, rect, this.Options))
{
float[] buffer = arrayPool.Rent(maxIntersections);
int scanlineWidth = maxX - minX;
using (var scanline = new Buffer <float>(scanlineWidth))
{
try
{
bool scanlineDirty = true;
for (int y = minY; y < maxY; y++)
{
if (scanlineDirty)
{
// clear the buffer
for (int x = 0; x < scanlineWidth; x++)
{
scanline[x] = 0;
}
scanlineDirty = false;
}
float subpixelFraction = 1f / subpixelCount;
float subpixelFractionPoint = subpixelFraction / subpixelCount;
for (float subPixel = (float)y; subPixel < y + 1; subPixel += subpixelFraction)
{
int pointsFound = region.Scan(subPixel, buffer, 0);
if (pointsFound == 0)
{
// nothing on this line skip
continue;
}
QuickSort(new Span <float>(buffer, 0, pointsFound));
for (int point = 0; point < pointsFound; point += 2)
{
// points will be paired up
float scanStart = buffer[point] - minX;
float scanEnd = buffer[point + 1] - minX;
int startX = (int)MathF.Floor(scanStart);
int endX = (int)MathF.Floor(scanEnd);
if (startX >= 0 && startX < scanline.Length)
{
for (float x = scanStart; x < startX + 1; x += subpixelFraction)
{
scanline[startX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
if (endX >= 0 && endX < scanline.Length)
{
for (float x = endX; x < scanEnd; x += subpixelFraction)
{
scanline[endX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
int nextX = startX + 1;
endX = Math.Min(endX, scanline.Length); // reduce to end to the right edge
nextX = Math.Max(nextX, 0);
for (int x = nextX; x < endX; x++)
{
scanline[x] += subpixelFraction;
scanlineDirty = true;
}
}
}
if (scanlineDirty)
{
if (!this.Options.Antialias)
{
for (int x = 0; x < scanlineWidth; x++)
{
if (scanline[x] > 0.5)
{
scanline[x] = 1;
}
else
{
scanline[x] = 0;
}
}
}
applicator.Apply(scanline, minX, y);
}
}
}
finally
{
arrayPool.Return(buffer);
}
}
}
}
public RowIntervalOperation(Rectangle bounds, BrushApplicator <TPixel> applicator, Memory <float> amount)
{
this.bounds = bounds;
this.applicator = applicator;
this.amount = amount;
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
Configuration configuration = this.Configuration;
ShapeOptions shapeOptions = this.definition.Options.ShapeOptions;
GraphicsOptions graphicsOptions = this.definition.Options.GraphicsOptions;
IBrush brush = this.definition.Brush;
Region region = this.definition.Region;
Rectangle rect = region.Bounds;
bool isSolidBrushWithoutBlending = IsSolidBrushWithoutBlending(graphicsOptions, this.definition.Brush, out SolidBrush solidBrush);
TPixel solidBrushColor = isSolidBrushWithoutBlending ? solidBrush.Color.ToPixel <TPixel>() : default;
// Align start/end positions.
int minX = Math.Max(0, rect.Left);
int maxX = Math.Min(source.Width, rect.Right);
int minY = Math.Max(0, rect.Top);
int maxY = Math.Min(source.Height, rect.Bottom);
if (minX >= maxX)
{
return; // no effect inside image;
}
if (minY >= maxY)
{
return; // no effect inside image;
}
int subpixelCount = FillRegionProcessor.MinimumSubpixelCount;
// we need to offset the pixel grid to account for when we outline a path.
// basically if the line is [1,2] => [3,2] then when outlining at 1 we end up with a region of [0.5,1.5],[1.5, 1.5],[3.5,2.5],[2.5,2.5]
// and this can cause missed fills when not using antialiasing.so we offset the pixel grid by 0.5 in the x & y direction thus causing the#
// region to align with the pixel grid.
if (graphicsOptions.Antialias)
{
subpixelCount = Math.Max(subpixelCount, graphicsOptions.AntialiasSubpixelDepth);
}
using BrushApplicator <TPixel> applicator = brush.CreateApplicator(configuration, graphicsOptions, source, rect);
int scanlineWidth = maxX - minX;
MemoryAllocator allocator = this.Configuration.MemoryAllocator;
bool scanlineDirty = true;
var scanner = PolygonScanner.Create(
region.Shape,
minY,
maxY,
subpixelCount,
shapeOptions.IntersectionRule,
configuration.MemoryAllocator);
try
{
using IMemoryOwner <float> bScanline = allocator.Allocate <float>(scanlineWidth);
Span <float> scanline = bScanline.Memory.Span;
while (scanner.MoveToNextPixelLine())
{
if (scanlineDirty)
{
scanline.Clear();
}
scanlineDirty = scanner.ScanCurrentPixelLineInto(minX, 0, scanline);
if (scanlineDirty)
{
int y = scanner.PixelLineY;
if (!graphicsOptions.Antialias)
{
bool hasOnes = false;
bool hasZeros = false;
for (int x = 0; x < scanline.Length; x++)
{
if (scanline[x] >= 0.5)
{
scanline[x] = 1;
hasOnes = true;
}
else
{
scanline[x] = 0;
hasZeros = true;
}
}
if (isSolidBrushWithoutBlending && hasOnes != hasZeros)
{
if (hasOnes)
{
source.GetPixelRowSpan(y).Slice(minX, scanlineWidth).Fill(solidBrushColor);
}
continue;
}
}
applicator.Apply(scanline, minX, y);
}
}
}
finally
{
// ref structs can't implement interfaces so technically PolygonScanner is not IDisposable
scanner.Dispose();
}
}
/// <inheritdoc/>
protected override void OnApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
Region region = this.Region;
Rectangle rect = region.Bounds;
// Align start/end positions.
int minX = Math.Max(0, rect.Left);
int maxX = Math.Min(source.Width, rect.Right);
int minY = Math.Max(0, rect.Top);
int maxY = Math.Min(source.Height, rect.Bottom);
if (minX >= maxX)
{
return; // no effect inside image;
}
if (minY >= maxY)
{
return; // no effect inside image;
}
ArrayPool <float> arrayPool = ArrayPool <float> .Shared;
int maxIntersections = region.MaxIntersections;
float subpixelCount = 4;
// we need to offset the pixel grid to account for when we outline a path.
// basically if the line is [1,2] => [3,2] then when outlining at 1 we end up with a region of [0.5,1.5],[1.5, 1.5],[3.5,2.5],[2.5,2.5]
// and this can cause missed fills when not using antialiasing.so we offset the pixel grid by 0.5 in the x & y direction thus causing the#
// region to alline with the pixel grid.
float offset = 0.5f;
if (this.Options.Antialias)
{
offset = 0f; // we are antialising skip offsetting as real antalising should take care of offset.
subpixelCount = this.Options.AntialiasSubpixelDepth;
if (subpixelCount < 4)
{
subpixelCount = 4;
}
}
using (BrushApplicator <TPixel> applicator = this.Brush.CreateApplicator(source, rect, this.Options))
{
float[] buffer = arrayPool.Rent(maxIntersections);
int scanlineWidth = maxX - minX;
using (var scanline = new Buffer <float>(scanlineWidth))
{
try
{
bool scanlineDirty = true;
for (int y = minY; y < maxY; y++)
{
if (scanlineDirty)
{
// clear the buffer
for (int x = 0; x < scanlineWidth; x++)
{
scanline[x] = 0;
}
scanlineDirty = false;
}
float subpixelFraction = 1f / subpixelCount;
float subpixelFractionPoint = subpixelFraction / subpixelCount;
for (float subPixel = (float)y; subPixel < y + 1; subPixel += subpixelFraction)
{
int pointsFound = region.Scan(subPixel + offset, buffer, 0);
if (pointsFound == 0)
{
// nothing on this line skip
continue;
}
QuickSort(new Span <float>(buffer, 0, pointsFound));
for (int point = 0; point < pointsFound; point += 2)
{
// points will be paired up
float scanStart = buffer[point] - minX;
float scanEnd = buffer[point + 1] - minX;
int startX = (int)MathF.Floor(scanStart + offset);
int endX = (int)MathF.Floor(scanEnd + offset);
if (startX >= 0 && startX < scanline.Length)
{
for (float x = scanStart; x < startX + 1; x += subpixelFraction)
{
scanline[startX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
if (endX >= 0 && endX < scanline.Length)
{
for (float x = endX; x < scanEnd; x += subpixelFraction)
{
scanline[endX] += subpixelFractionPoint;
scanlineDirty = true;
}
}
int nextX = startX + 1;
endX = Math.Min(endX, scanline.Length); // reduce to end to the right edge
nextX = Math.Max(nextX, 0);
for (int x = nextX; x < endX; x++)
{
scanline[x] += subpixelFraction;
scanlineDirty = true;
}
}
}
if (scanlineDirty)
{
if (!this.Options.Antialias)
{
for (int x = 0; x < scanlineWidth; x++)
{
if (scanline[x] >= 0.5)
{
scanline[x] = 1;
}
else
{
scanline[x] = 0;
}
}
}
applicator.Apply(scanline, minX, y);
}
}
}
finally
{
arrayPool.Return(buffer);
}
}
}
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source, Rectangle sourceRectangle, Configuration configuration)
{
int startX = sourceRectangle.X;
int endX = sourceRectangle.Right;
int startY = sourceRectangle.Y;
int endY = sourceRectangle.Bottom;
// 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);
int width = maxX - minX;
// If there's no reason for blending, then avoid it.
if (this.IsSolidBrushWithoutBlending(out SolidBrush <TPixel> solidBrush))
{
Parallel.For(
minY,
maxY,
configuration.ParallelOptions,
y =>
{
source.GetPixelRowSpan(y).Slice(minX, width).Fill(solidBrush.Color);
});
}
else
{
// Reset offset if necessary.
if (minX > 0)
{
startX = 0;
}
if (minY > 0)
{
startY = 0;
}
using (IBuffer <float> amount = source.MemoryManager.Allocate <float>(width))
using (BrushApplicator <TPixel> applicator = this.brush.CreateApplicator(
source,
sourceRectangle,
this.options))
{
amount.Span.Fill(1f);
Parallel.For(
minY,
maxY,
configuration.ParallelOptions,
y =>
{
int offsetY = y - startY;
int offsetX = minX - startX;
applicator.Apply(amount.Span, offsetX, offsetY);
});
}
}
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
// this is a no-op as we have processes all as an image, we should be able to pass out of before email apply a skip frames outcome
Draw(this.textRenderer.FillOperations, this.Brush);
Draw(this.textRenderer.OutlineOperations, this.Pen?.StrokeFill);
void Draw(List <DrawingOperation> operations, IBrush brush)
{
if (operations?.Count > 0)
{
var brushes = new Dictionary <Color, BrushApplicator <TPixel> >();
foreach (DrawingOperation operation in operations)
{
if (operation.Color.HasValue)
{
if (!brushes.TryGetValue(operation.Color.Value, out _))
{
brushes[operation.Color.Value] = new SolidBrush(operation.Color.Value).CreateApplicator(
this.Configuration,
this.textRenderer.Options.GraphicsOptions,
source,
this.SourceRectangle);
}
}
}
using (BrushApplicator <TPixel> app = brush.CreateApplicator(this.Configuration, this.textRenderer.Options.GraphicsOptions, source, this.SourceRectangle))
{
foreach (DrawingOperation operation in operations)
{
var currentApp = app;
if (operation.Color != null)
{
brushes.TryGetValue(operation.Color.Value, out currentApp);
}
Buffer2D <float> buffer = operation.Map;
int startY = operation.Location.Y;
int startX = operation.Location.X;
int offsetSpan = 0;
if (startX + buffer.Height < 0)
{
continue;
}
if (startX + buffer.Width < 0)
{
continue;
}
if (startX < 0)
{
offsetSpan = -startX;
startX = 0;
}
if (startX >= source.Width)
{
continue;
}
int firstRow = 0;
if (startY < 0)
{
firstRow = -startY;
}
int maxHeight = source.Height - startY;
int end = Math.Min(operation.Map.Height, maxHeight);
for (int row = firstRow; row < end; row++)
{
int y = startY + row;
Span <float> span = buffer.GetRowSpan(row).Slice(offsetSpan);
currentApp.Apply(span, startX, y);
}
}
}
foreach (var app in brushes.Values)
{
app.Dispose();
}
}
}
}
/// <inheritdoc/>
protected override void OnFrameApply(ImageFrame <TPixel> source)
{
Configuration configuration = this.Configuration;
ShapeOptions shapeOptions = this.definition.Options.ShapeOptions;
GraphicsOptions graphicsOptions = this.definition.Options.GraphicsOptions;
IBrush brush = this.definition.Brush;
bool isSolidBrushWithoutBlending = IsSolidBrushWithoutBlending(graphicsOptions, brush, out SolidBrush solidBrush);
TPixel solidBrushColor = isSolidBrushWithoutBlending ? solidBrush.Color.ToPixel <TPixel>() : default;
// Align start/end positions.
var interest = Rectangle.Intersect(this.bounds, source.Bounds());
if (interest.Equals(Rectangle.Empty))
{
return; // No effect inside image;
}
int minX = interest.Left;
int subpixelCount = FillPathProcessor.MinimumSubpixelCount;
// We need to offset the pixel grid to account for when we outline a path.
// basically if the line is [1,2] => [3,2] then when outlining at 1 we end up with a region of [0.5,1.5],[1.5, 1.5],[3.5,2.5],[2.5,2.5]
// and this can cause missed fills when not using antialiasing.so we offset the pixel grid by 0.5 in the x & y direction thus causing the#
// region to align with the pixel grid.
if (graphicsOptions.Antialias)
{
subpixelCount = Math.Max(subpixelCount, graphicsOptions.AntialiasSubpixelDepth);
}
using BrushApplicator <TPixel> applicator = brush.CreateApplicator(configuration, graphicsOptions, source, interest);
int scanlineWidth = interest.Width;
MemoryAllocator allocator = this.Configuration.MemoryAllocator;
bool scanlineDirty = true;
var scanner = PolygonScanner.Create(
this.path,
interest.Top,
interest.Bottom,
subpixelCount,
shapeOptions.IntersectionRule,
configuration.MemoryAllocator);
try
{
using IMemoryOwner <float> bScanline = allocator.Allocate <float>(scanlineWidth);
Span <float> scanline = bScanline.Memory.Span;
while (scanner.MoveToNextPixelLine())
{
if (scanlineDirty)
{
scanline.Clear();
}
scanlineDirty = scanner.ScanCurrentPixelLineInto(minX, 0F, scanline);
if (scanlineDirty)
{
int y = scanner.PixelLineY;
if (!graphicsOptions.Antialias)
{
bool hasOnes = false;
bool hasZeros = false;
for (int x = 0; x < scanline.Length; x++)
{
if (scanline[x] >= 0.5F)
{
scanline[x] = 1F;
hasOnes = true;
}
else
{
scanline[x] = 0F;
hasZeros = true;
}
}
if (isSolidBrushWithoutBlending && hasOnes != hasZeros)
{
if (hasOnes)
{
source.PixelBuffer.DangerousGetRowSpan(y).Slice(minX, scanlineWidth).Fill(solidBrushColor);
}
continue;
}
}
applicator.Apply(scanline, minX, y);
}
}
}
finally
{
scanner.Dispose();
}
}
public SolidPenApplicator(PixelAccessor <TPixel> sourcePixels, IBrush <TPixel> brush, RectangleF region, float width, GraphicsOptions options)
{
this.brush = brush.CreateApplicator(sourcePixels, region, options);
this.halfWidth = width / 2;
this.RequiredRegion = RectangleF.Outset(region, width);
}