mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-25 00:58:06 -05:00
af0d68b882
Faster than QgsGeometry::isGeosEmpty() because it avoids the conversion to GEOS geometries and just uses the QgsAbstractGeometry subclasses directly. Also implements faster isEmpty() overrides for specific QgsAbstractGeometry subclasses.
107 lines
3.7 KiB
Plaintext
107 lines
3.7 KiB
Plaintext
class QgsCompoundCurve: public QgsCurve
|
|
{
|
|
%TypeHeaderCode
|
|
#include <qgscompoundcurve.h>
|
|
%End
|
|
|
|
public:
|
|
QgsCompoundCurve();
|
|
QgsCompoundCurve( const QgsCompoundCurve& curve );
|
|
//QgsCompoundCurve &operator=( const QgsCompoundCurve & curve );
|
|
~QgsCompoundCurve();
|
|
|
|
virtual bool operator==( const QgsCurve& other ) const;
|
|
virtual bool operator!=( const QgsCurve& other ) const;
|
|
|
|
virtual QString geometryType() const;
|
|
virtual int dimension() const;
|
|
virtual QgsCompoundCurve* clone() const /Factory/;
|
|
virtual void clear();
|
|
|
|
virtual bool fromWkb( QgsConstWkbPtr& wkb );
|
|
virtual bool fromWkt( const QString& wkt );
|
|
|
|
QByteArray asWkb() const;
|
|
QString asWkt( int precision = 17 ) const;
|
|
QDomElement asGML2( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
|
|
QDomElement asGML3( QDomDocument& doc, int precision = 17, const QString& ns = "gml" ) const;
|
|
QString asJSON( int precision = 17 ) const;
|
|
|
|
//curve interface
|
|
virtual double length() const;
|
|
virtual QgsPointV2 startPoint() const;
|
|
virtual QgsPointV2 endPoint() const;
|
|
virtual void points( QList<QgsPointV2>& pts ) const;
|
|
virtual int numPoints() const;
|
|
bool isEmpty() const;
|
|
|
|
/** Returns a new line string geometry corresponding to a segmentized approximation
|
|
* of the curve.
|
|
* @param tolerance segmentation tolerance
|
|
* @param toleranceType maximum segmentation angle or maximum difference between approximation and curve*/
|
|
virtual QgsLineString* curveToLine( double tolerance = M_PI_2 / 90, SegmentationToleranceType toleranceType = MaximumAngle ) const /Factory/;
|
|
|
|
/** Returns the number of curves in the geometry.
|
|
*/
|
|
int nCurves() const;
|
|
|
|
/** Returns the curve at the specified index.
|
|
*/
|
|
const QgsCurve* curveAt( int i ) const;
|
|
|
|
/** Adds a curve to the geometr (takes ownership)
|
|
*/
|
|
void addCurve( QgsCurve* c /Transfer/ );
|
|
|
|
/** Removes a curve from the geometry.
|
|
* @param i index of curve to remove
|
|
*/
|
|
void removeCurve( int i );
|
|
|
|
/** Adds a vertex to the end of the geometry.
|
|
*/
|
|
void addVertex( const QgsPointV2& pt );
|
|
|
|
void draw( QPainter& p ) const;
|
|
void transform( const QgsCoordinateTransform& ct, QgsCoordinateTransform::TransformDirection d = QgsCoordinateTransform::ForwardTransform,
|
|
bool transformZ = false );
|
|
void transform( const QTransform& t );
|
|
void addToPainterPath( QPainterPath& path ) const;
|
|
void drawAsPolygon( QPainter& p ) const;
|
|
|
|
virtual bool insertVertex( QgsVertexId position, const QgsPointV2& vertex );
|
|
virtual bool moveVertex( QgsVertexId position, const QgsPointV2& newPos );
|
|
virtual bool deleteVertex( QgsVertexId position );
|
|
|
|
virtual double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const;
|
|
bool pointAt( int node, QgsPointV2& point, QgsVertexId::VertexType& type ) const;
|
|
|
|
void sumUpArea( double& sum ) const;
|
|
|
|
/** Appends first point if not already closed.*/
|
|
void close();
|
|
|
|
bool hasCurvedSegments() const;
|
|
|
|
/** Returns approximate rotation angle for a vertex. Usually average angle between adjacent segments.
|
|
@param vertex the vertex id
|
|
@return rotation in radians, clockwise from north*/
|
|
double vertexAngle( QgsVertexId vertex ) const;
|
|
|
|
virtual QgsCompoundCurve* reversed() const /Factory/;
|
|
|
|
virtual bool addZValue( double zValue = 0 );
|
|
virtual bool addMValue( double mValue = 0 );
|
|
|
|
virtual bool dropZValue();
|
|
virtual bool dropMValue();
|
|
|
|
virtual double xAt( int index ) const;
|
|
virtual double yAt( int index ) const;
|
|
|
|
protected:
|
|
|
|
virtual QgsRectangle calculateBoundingBox() const;
|
|
|
|
};
|