DropShadowPrimitive Class

Namespace: Meziantou.Framework.Imaging.Drawing
Assembly: Meziantou.Framework.Imaging.dll
Package: Meziantou.Framework.Imaging 1.2.11
Source: DropShadowPrimitive.cs
Available in package assets: net10.0net11.0

A primitive that draws its input over its shadow: feDropShadow of SVG.

public sealed class DropShadowPrimitive : FilterPrimitive

Remarks

The shadow is the one of DropShadowFilter, with a standard deviation per axis: the alpha of the input, moved by DropShadowPrimitive.Offset, blurred (transparent beyond the subregion of the input), painted with DropShadowPrimitive.Color in the colors of the primitive; the input is drawn over it.

Inheritance: FilterPrimitive DropShadowPrimitive

Constructors

Name	Description
DropShadowPrimitive(Rgba64, PointD, double, double)	Initializes a new instance of the `DropShadowPrimitive` class.

DropShadowPrimitive(Rgba64, PointD, double, double)

DropShadowPrimitive.cs

Initializes a new instance of the DropShadowPrimitive class.

public DropShadowPrimitive(Rgba64 color, PointD offset, double sigmaX, double sigmaY)

Parameters

color Rgba64: The color of the shadow, with straight alpha: flood-color and flood-opacity. An Rgba32 converts implicitly.
offset PointD: The distance from the input to its shadow, in units of the drawing: dx and dy.
sigmaX double: The standard deviation of the blur along x, in units of the drawing. Must be between 0 and 10000.
sigmaY double: The standard deviation of the blur along y, in units of the drawing. Must be between 0 and 10000.

Exceptions

ArgumentException: A coordinate of offset, or a standard deviation, is not a finite number.
ArgumentOutOfRangeException: The magnitude of a coordinate of offset exceeds 16777216, or a standard deviation is negative or exceeds 10000.

Properties

Name	Description
Color	Gets the color of the shadow.
Input	Gets the input: `in`.
Offset	Gets the distance from the input to its shadow.
SigmaX	Gets the standard deviation of the blur along x.
SigmaY	Gets the standard deviation of the blur along y.