BitmapDataExtensionsBeginFillPie(IReadWriteBitmapData, Color32, Rectangle, Single, Single, DrawingOptions, AsyncConfig) Method

Begins to fill a pie shape with the specified color asynchronously.

Definition

Namespace: KGySoft.Drawing.Shapes
Assembly: KGySoft.Drawing.Core (in KGySoft.Drawing.Core.dll) Version: 9.1.1
C#
public static IAsyncResult BeginFillPie(
	this IReadWriteBitmapData bitmapData,
	Color32 color,
	Rectangle bounds,
	float startAngle,
	float sweepAngle,
	DrawingOptions? drawingOptions = null,
	AsyncConfig? asyncConfig = null
)

Parameters

bitmapData  IReadWriteBitmapData
The IReadWriteBitmapData instance to draw on.
color  Color32
The color of the pie to fill.
bounds  Rectangle
The bounding rectangle that defines the ellipse from which the pie shape comes.
startAngle  Single
The starting angle of the pie shape, measured in degrees clockwise from the x-axis.
sweepAngle  Single
The sweep angle of the pie shape, measured in degrees clockwise from startAngle.
drawingOptions  DrawingOptions  (Optional)
A DrawingOptions instance that specifies the drawing options to use. If , then the default options are used. This parameter is optional.
Default value: .
asyncConfig  AsyncConfig  (Optional)
The configuration of the asynchronous operation such as parallelization, cancellation, reporting progress, etc. When Progress is set in this parameter, then this library always passes a DrawingOperation instance to the generic methods of the IAsyncProgress interface. This parameter is optional.
Default value: .

Return Value

IAsyncResult
An IAsyncResult that represents the asynchronous operation, which could still be pending.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IReadWriteBitmapData. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

The pie shape is defined by an arc of an ellipse and the two radial lines that intersect with the endpoints of the arc.

This method does not use optimized shortcuts. If the same pie shape is filled repeatedly, creating a Path with PreferCaching enabled and adding the pie to it can provide a better performance.

In .NET Framework 4.0 and above you can use also the FillPieAsync methods.

To finish the operation and to get the exception that occurred during the operation you have to call the EndFillPie method.

This method is not a blocking call even if the MaxDegreeOfParallelism property of the asyncConfig parameter is 1.

Exceptions

ArgumentNullExceptionbitmapData is .
OverflowExceptionThe coordinates (after a possible transformation specified in drawingOptions) are outside the bounds of an int value.

See Also