api:dk11:activex:tatukgis_xdk11.itgis_shape.symmetricaldifference_itgis_shape
Table of Contents
ITGIS_Shape.SymmetricalDifference method
DK for ActiveX | TatukGIS_XDK11.ITGIS_Shape.SymmetricalDifference | Methods | Properties
Computes the symmetrical difference between this shape and another shape.
Syntax
// C# public ITGIS_Shape SymmetricalDifference( ITGIS_Shape _shape );
' VisualBasic Public Function SymmetricalDifference( ByVal _shape As ITGIS_Shape ) As ITGIS_Shape
// Oxygene public function SymmetricalDifference( _shape : ITGIS_Shape ) : ITGIS_Shape;
Parameters
| Name | Type | Description |
|---|---|---|
| _shape | ITGIS_Shape | Shape to compute the symmetrical difference with. Must have valid geometry. |
Result
| Type | Description |
|---|---|
| ITGIS_Shape | Newly created shape containing geometry that belongs to either shape but not to both. |
Remarks
PURPOSE: Extract non-common geometry for change detection, XOR-style processing, and comparison of vector features.
BEHAVIOR: Performs the symmetrical difference operation, equivalent to points in this shape or _shape, excluding points shared by both shapes.
CONSTRAINTS: Caller owns the returned shape. Both shapes must have valid geometry suitable for topology processing.
2026/07/05 01:25