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class QgsCircularStringV2: public QgsCurveV2
{
%TypeHeaderCode
#include <qgscircularstringv2.h>
%End
public:
QgsCircularStringV2();
~QgsCircularStringV2();
virtual bool operator==( const QgsCurveV2& other ) const;
virtual bool operator!=( const QgsCurveV2& other ) const;
virtual QString geometryType() const;
virtual int dimension() const;
virtual QgsCircularStringV2* clone() const /Factory/;
virtual void clear();
virtual bool fromWkb( QgsConstWkbPtr wkb );
virtual bool fromWkt( const QString& wkt );
int wkbSize() const;
unsigned char* asWkb( int& binarySize ) 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;
int numPoints() const;
/** Returns the point at index i within the circular string.
*/
QgsPointV2 pointN( int i ) const;
/**
* @copydoc QgsCurveV2::points()
*/
void points( QList<QgsPointV2>& pts ) const;
/** Sets the circular string's points
*/
void setPoints( const QList<QgsPointV2>& points );
/**
* @copydoc QgsAbstractGeometryV2::length()
*/
virtual double length() const;
/**
* @copydoc QgsCurveV2::startPoint()
*/
virtual QgsPointV2 startPoint() const;
/**
* @copydoc QgsCurveV2::endPoint()
*/
virtual QgsPointV2 endPoint() 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 QgsLineStringV2* curveToLine( double tolerance = M_PI_2 / 90, SegmentationToleranceType toleranceType = MaximumAngle ) const /Factory/;
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;
/**
* @copydoc QgsCurveV2::drawAsPolygon()
*/
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 );
double closestSegment( const QgsPointV2& pt, QgsPointV2& segmentPt, QgsVertexId& vertexAfter, bool* leftOf, double epsilon ) const;
/**
* @copydoc QgsCurveV2::pointAt()
*/
bool pointAt( int node, QgsPointV2& point, QgsVertexId::VertexType& type ) const;
/**
* @copydoc QgsCurveV2::sumUpArea()
*/
void sumUpArea( double& sum ) const;
/**
* @copydoc QgsAbstractGeometryV2::hasCurvedSegments()
*/
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 QgsCircularStringV2* reversed() const /Factory/;
virtual bool addZValue( double zValue = 0 );
virtual bool addMValue( double mValue = 0 );
virtual bool dropZValue();
virtual bool dropMValue();
protected:
virtual QgsRectangle calculateBoundingBox() const;
private:
//helper methods for curveToLine
void segmentize( const QgsPointV2& p1, const QgsPointV2& p2, const QgsPointV2& p3, QList<QgsPointV2>& points ) const;
};
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