Returns the angular extent (in radians) and direction of the annulus section. For example, a value of π specifies a section that is one half of the full annulus. A value of -π specifies the other half.
Sets AngleSpan.
Assembly: Cognex.Vision.Core.Net (in Cognex.Vision.Core.Net.dll) Version: 9.22.2.0
Property Value
Type: DoubleDefault Value: π/2
| Exception | Condition |
|---|---|
| ArgumentException | Value is zero. |
Gets the angle span of the start arc of this elliptical annulus section in radians. The angle can be any positive or negative value, but not exactly 0; the sign determines the direction of the arc. If the absolute value of the angle span is greater than 2π, the arc wraps around on itself. It is not normalized to the range −2π to 2π For example, an AngleSpan of +π is an arc that describes half of a full ellipse, and a span of −π describes the other half in the opposite direction. To simply reverse the direction of an arc, you can use the following:
Changed Raised when the value of this property changes. The following state flag may be affected: