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IEllipticArc.FromAngle Property (ArcObjects .NET 10.8 SDK)
 ArcObjects Help for .NET developers > ArcObjects Help for .NET developers > ArcObjects namespaces > Geometry > ESRI.ArcGIS.Geometry > Interfaces > IE > IEllipticArc Interface > IEllipticArc.FromAngle Property
 ArcGIS Developer Help

# IEllipticArc.FromAngle Property

The start angle (measured from a horizontal line through the center point) defining where the arc starts.

```[Visual Basic .NET]
Public Function get_FromAngle ( _
ByVal ellipseStd As Boolean _
) As Double
```
```[Visual Basic .NET]
Public Sub set_FromAngle ( _
ByVal ellipseStd As Boolean, _
ByVal FromAngle As Double _
)
```
```[C#]
public double get_FromAngle (
bool ellipseStd
);
```
```[C#]
public void set_FromAngle (
bool ellipseStd,
double FromAngle
);
```
```[C++]
HRESULT get_FromAngle(
VARIANT_BOOL ellipseStd,
System.Double* FromAngle
);
```
```[C++]
HRESULT put_FromAngle(
VARIANT_BOOL ellipseStd,
double FromAngle
);
```
```[C++]
Parameters
ellipseStd
ellipseStd is a parameter of type bool
FromAngle [out, retval]
FromAngle is a parameter of type double*
ellipseStd
ellipseStd is a parameter of type bool
FromAngle
FromAngle is a parameter of type double
```

#### Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

#### Description

The From Angle is the angle of the Line defined by the Center Point and the From Point of the Elliptic Arc.  Setting the From Angle changes the From Point of the Elliptic Arc without altering the embedded geometry.  The From Angle is measured in radians (there are 2*pi radians in a full ellipse).  If EllipseStd = TRUE, the From Angle is relative to the rotated semi-Major Axis rather than the X-Axis.