Supports creating a new Geometry which is a modification of an existing one. Geometry objects are intended to be treated as immutable. This class allows you to "modify" a Geometry by traversing it and creating a new Geometry with the same overall structure but possibly modified components.
The following kinds of modifications can be made:
- the values of the coordinates may be changed. Changing coordinate values may make the result Geometry invalid; this is not checked by the GeometryEditor
- the coordinate lists may be changed (e.g. by adding or deleting coordinates). The modifed coordinate lists must be consistent with their original parent component (e.g. a LinearRing must always have at least 4 coordinates, and the first and last coordinate must be equal)
- components of the original geometry may be deleted (e.g. holes may be removed from a Polygon, or LineStrings removed from a MultiLineString). Deletions will be propagated up the component tree appropriately.
Note that all changes must be consistent with the original Geometry's structure (e.g. a Polygon cannot be collapsed into a LineString).
The resulting Geometry is not checked for validity. If validity needs to be enforced, the new Geometry's isValid should be checked.
- See also
- Geometry::isValid
Definition at line 79 of file GeometryEditor.h.
