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class QgsGeometryEngine
{
%TypeHeaderCode
#include <qgsgeometryengine.h>
%End
public:
QgsGeometryEngine( const QgsAbstractGeometryV2* geometry );
virtual ~QgsGeometryEngine();
virtual void geometryChanged() = 0;
virtual void prepareGeometry() = 0;
virtual QgsAbstractGeometryV2* intersection( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* difference( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* combine( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* combine( const QList< QgsAbstractGeometryV2* >&, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* symDifference( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* buffer( double distance, int segments, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* buffer( double distance, int segments, int endCapStyle, int joinStyle, double mitreLimit, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* simplify( double tolerance, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* interpolate( double distance, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* envelope( QString* errorMsg = 0 ) const = 0;
virtual bool centroid( QgsPointV2& pt, QString* errorMsg = 0 ) const = 0;
virtual bool pointOnSurface( QgsPointV2& pt, QString* errorMsg = 0 ) const = 0;
virtual QgsAbstractGeometryV2* convexHull( QString* errorMsg = 0 ) const = 0;
virtual double distance( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool intersects( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool touches( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool crosses( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool within( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool overlaps( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool contains( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool disjoint( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
/** Returns the Dimensional Extended 9 Intersection Model (DE-9IM) representation of the
* relationship between the geometries.
* @param geom geometry to relate to
* @param errorMsg destination storage for any error message
* @returns DE-9IM string for relationship, or an empty string if an error occurred
* @note added in QGIS 2.12
*/
virtual QString relate( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
/** Tests whether two geometries are related by a specified Dimensional Extended 9 Intersection Model (DE-9IM)
* pattern.
* @param geom geometry to relate to
* @param pattern DE-9IM pattern for match
* @param errorMsg destination storage for any error message
* @returns true if geometry relationship matches with pattern
* @note added in QGIS 2.14
*/
virtual bool relatePattern( const QgsAbstractGeometryV2& geom, const QString& pattern, QString* errorMsg = 0 ) const = 0;
virtual double area( QString* errorMsg = 0 ) const = 0;
virtual double length( QString* errorMsg = 0 ) const = 0;
virtual bool isValid( QString* errorMsg = 0 ) const = 0;
virtual bool isEqual( const QgsAbstractGeometryV2& geom, QString* errorMsg = 0 ) const = 0;
virtual bool isEmpty( QString* errorMsg = 0 ) const = 0;
virtual int splitGeometry( const QgsLineStringV2& splitLine,
QList<QgsAbstractGeometryV2*>& newGeometries,
bool topological,
QList<QgsPointV2> &topologyTestPoints, QString* errorMsg = nullptr ) const;
virtual QgsAbstractGeometryV2* offsetCurve( double distance, int segments, int joinStyle, double mitreLimit, QString* errorMsg = 0 ) const = 0;
};
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