mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-31 00:06:02 -04:00
103 lines
3.8 KiB
Plaintext
103 lines
3.8 KiB
Plaintext
class QgsVectorLayerEditUtils
|
|
{
|
|
%TypeHeaderCode
|
|
#include <qgsvectorlayereditutils.h>
|
|
%End
|
|
public:
|
|
QgsVectorLayerEditUtils( QgsVectorLayer* layer );
|
|
|
|
QgsGeometryCache* cache();
|
|
|
|
|
|
/** Insert a new vertex before the given vertex number,
|
|
* in the given ring, item (first number is index 0), and feature
|
|
* Not meaningful for Point geometries
|
|
*/
|
|
bool insertVertex( double x, double y, QgsFeatureId atFeatureId, int beforeVertex );
|
|
|
|
/** Moves the vertex at the given position number,
|
|
* ring and item (first number is index 0), and feature
|
|
* to the given coordinates
|
|
*/
|
|
bool moveVertex( double x, double y, QgsFeatureId atFeatureId, int atVertex );
|
|
|
|
/** Deletes a vertex from a feature
|
|
*/
|
|
bool deleteVertex( QgsFeatureId atFeatureId, int atVertex );
|
|
|
|
/** Adds a ring to polygon/multipolygon features
|
|
@return
|
|
0 in case of success,
|
|
1 problem with feature type,
|
|
2 ring not closed,
|
|
3 ring not valid,
|
|
4 ring crosses existing rings,
|
|
5 no feature found where ring can be inserted*/
|
|
int addRing( const QList<QgsPoint>& ring );
|
|
|
|
/** Adds a new part polygon to a multipart feature
|
|
@return
|
|
0 in case of success,
|
|
1 if selected feature is not multipart,
|
|
2 if ring is not a valid geometry,
|
|
3 if new polygon ring not disjoint with existing rings,
|
|
4 if no feature was selected,
|
|
5 if several features are selected,
|
|
6 if selected geometry not found*/
|
|
int addPart( const QList<QgsPoint>& ring, QgsFeatureId featureId );
|
|
|
|
/** Translates feature by dx, dy
|
|
@param featureId id of the feature to translate
|
|
@param dx translation of x-coordinate
|
|
@param dy translation of y-coordinate
|
|
@return 0 in case of success*/
|
|
int translateFeature( QgsFeatureId featureId, double dx, double dy );
|
|
|
|
/** Splits parts cut by the given line
|
|
* @param splitLine line that splits the layer feature parts
|
|
* @param topologicalEditing true if topological editing is enabled
|
|
* @return
|
|
* 0 in case of success,
|
|
* 4 if there is a selection but no feature split
|
|
*/
|
|
int splitParts( const QList<QgsPoint>& splitLine, bool topologicalEditing = false );
|
|
|
|
/** Splits features cut by the given line
|
|
* @param splitLine line that splits the layer features
|
|
* @param topologicalEditing true if topological editing is enabled
|
|
* @return
|
|
* 0 in case of success,
|
|
* 4 if there is a selection but no feature split
|
|
*/
|
|
int splitFeatures( const QList<QgsPoint>& splitLine, bool topologicalEditing = false );
|
|
|
|
/** Adds topological points for every vertex of the geometry.
|
|
* @param geom the geometry where each vertex is added to segments of other features
|
|
* @note geom is not going to be modified by the function
|
|
* @return 0 in case of success
|
|
*/
|
|
int addTopologicalPoints( QgsGeometry* geom );
|
|
|
|
/** Adds a vertex to segments which intersect point p but don't
|
|
* already have a vertex there. If a feature already has a vertex at position p,
|
|
* no additional vertex is inserted. This method is useful for topological
|
|
* editing.
|
|
* @param p position of the vertex
|
|
* @return 0 in case of success
|
|
*/
|
|
int addTopologicalPoints( const QgsPoint& p );
|
|
|
|
/** Inserts vertices to the snapped segments.
|
|
* This is useful for topological editing if snap to segment is enabled.
|
|
* @param snapResults results collected from the snapping operation
|
|
* @return 0 in case of success
|
|
*/
|
|
int insertSegmentVerticesForSnap( const QList<QgsSnappingResult>& snapResults );
|
|
|
|
protected:
|
|
|
|
/** Little helper function that gives bounding box from a list of points.
|
|
@return 0 in case of success */
|
|
int boundingBoxFromPointList( const QList<QgsPoint>& list, double& xmin, double& ymin, double& xmax, double& ymax ) const;
|
|
};
|