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PathGradientBrush.SetSigmaBellShape Method (Single)

Creates a gradient brush that changes color starting from the center of the path outward to the path's boundary. The transition from one color to another is based on a bell-shaped curve.

Namespace:  System.Drawing.Drawing2D
Assembly:  System.Drawing (in System.Drawing.dll)

public void SetSigmaBellShape(
	float focus


Type: System.Single

A value from 0 through 1 that specifies where, along any radial from the center of the path to the path's boundary, the center color will be at its highest intensity. A value of 1 (the default) places the highest intensity at the center of the path.

If there is more than one color in the SurroundColors array, the first color in the array is used for the ending color. The colors specified in this array are colors used for discrete points on the brush's boundary path.

By default, as you move from the boundary of a path gradient to the center point, the color changes gradually from the boundary color to the center color. You can customize the positioning and blending of the boundary and center colors by calling this method.

For an example, see SetSigmaBellShape.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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