Struct MaskBlur

Namespace

Egami.Drawing

Assembly

Egami.Drawing.dll

A Gaussian blur of a shape's coverage before the paint is applied, as Skia's blur mask filter: Sigma is in device pixels, so it does not scale with the canvas transform. Set it as Blur. Egami blurs with its fast blur; an axis-aligned rectangle with Normal is computed exactly from the error function, which is faster still.

public readonly record struct MaskBlur : IEquatable<MaskBlur>

Implements

IEquatable<MaskBlur>

Inherited Members

ValueType.Equals(object)

ValueType.GetHashCode()

ValueType.ToString()

object.Equals(object, object)

object.GetType()

object.ReferenceEquals(object, object)

Examples

using (RasterCanvas<Rgba8> canvas = raster.CreateCanvas())
{
    // A soft-edged card (exact, from the error function) and a neon outline: the stroke's outer blur only, then the stroke.
    canvas.FillRoundRect(new RoundRect(new RectF(20, 20, 110, 80), 12), new SolidPaint(new Rgba8(30, 30, 30, 255)) { Blur = new MaskBlur(6) });
    Path ring = Path.Circle(new Vector2(220, 60), 40);
    canvas.StrokePath(ring, new Stroke(4), new SolidPaint(new Rgba8(255, 40, 200, 255)) { Blur = new MaskBlur(8, BlurStyle.Outer) });
    canvas.StrokePath(ring, new Stroke(4), new Rgba8(255, 200, 250, 255));
}

Constructors

MaskBlur(float, BlurStyle)

Initializes a new instance of the MaskBlur struct.

public MaskBlur(float sigma, BlurStyle style = BlurStyle.Normal)

Parameters

sigma float

The blur's standard deviation in device pixels, from 0 (no blur) to 1000.

style BlurStyle

What of the blur is kept.

Exceptions

ArgumentOutOfRangeException

sigma is outside 0 to 1000, or style is not defined.

Fields

MaxSigma

The largest sigma, as for Egami's blurs.

public const float MaxSigma = 1000

Field Value

float

Properties

Sigma

Gets the blur's standard deviation in device pixels.

public float Sigma { get; }

Property Value

float

Style

Gets what of the blur is kept.

public BlurStyle Style { get; }

Property Value

BlurStyle