Simplify a polygon with a self-intersecting geometry.
Use case
A user may draw a polygon which is self-intersecting or contains incorrect ring orientations. The geometry must be simplified before it can be saved to a geodatabase.
How to use the sample
Click the ‘Simplify’ button to simplify the geometry. Click ‘Reset’ to reset to the original geometry.
How it works
- Check if the polygon geometry needs to be simplified using
GeometryEngine.isSimple(_:). - Simplify the polygon’s geometry using
GeometryEngine.simplify(_:).
Relevant API
- Geometry
- GeometryEngine
Additional information
The concept of topological simplicity is different than geometry generalization, where points are removed from polygons or lines to create a more generalized result while preserving overall shape. See the ‘Densify and Generalize’ sample for comparison.
Tags
geometry, polygon, simplify, spatial operations, topology