Method Offset
Offset(Geometry, Double, OffsetType, Double, Double)
Returns offset version of the input geometry.
Declaration
public static Geometry Offset(this Geometry geometry, double distance, OffsetType offsetType, double bevelRatio, double flattenError)Parameters
| Type | Name | Description |
|---|---|---|
| Geometry | geometry | The geometry to calculate offset for. MapPoint and Multipoint are not supported. |
| System.Double | distance | The offset distance for the geometry. |
| OffsetType | offsetType | The offset type of the offset geometry. |
| System.Double | bevelRatio | The ratio used to produce a bevel join instead of a miter join (used only when joins is miter) |
| System.Double | flattenError | The maximum distance of the resulting segments compared to the true
circular arc (used only when joins is round). When |
Returns
| Type | Description |
|---|---|
| Geometry | The result of the offset operation. |
Remarks
The offset operation creates a geometry that is a constant distance from an input polyline
or polygon. It is similar to buffering, but produces a one sided result. If distance
is greater than 0, then the offset geometry is constructed to the right of the oriented input geometry,
otherwise it is constructed to the left. For a simple polygon, the orientation of outer rings
is clockwise and for inner rings it is counterclockwise. So the "right side" of a simple
polygon is always its inside. The bevelRatio is multiplied by the offset distance and the
result determines how far a mitered offset intersection can be from the input curve before
it is beveled.
Supports true curves as input, producing a densified curve as output where applicable.
Applies to
Platforms and versions
| Target | Versions |
|---|---|
| .NET Standard 2.0 | 100.3 - 200.7 |
| .NET | 100.13 - 200.7 |
| .NET Windows | 100.13 - 200.7 |
| .NET Android | 200.0 - 200.7 |
| .NET iOS | 200.0 - 200.7 |
| .NET Framework | 100.0 - 200.7 |
| Xamarin.Android | 100.0 - 100.15 |
| Xamarin.iOS | 100.0 - 100.15 |
| UWP | 100.0 - 200.7 |