31 return equals( *otherCurve );
50 if (
is3D() && closed )
51 closed &=
qgsDoubleNear( start.
z(), end.
z(), 1E-8 ) || ( std::isnan( start.
z() ) && std::isnan( end.
z() ) );
65 points( sequence.back().back() );
92 return pointAt(
id.vertex, vertex,
id.type );
113 if ( vertex.
vertex == n - 1 )
125 if (
id.part != 0 ||
id.ring != 0 )
127 if (
id.vertex < 0 || id.vertex >=
numPoints() )
184 if ( mBoundingBox.
isNull() )
195 points.reserve( nb );
196 for (
int i = 0; i < nb; ++i )
198 points << QPointF(
xAt( i ),
yAt( i ) );
218 bool res =
pointAt( index, point, type );
225 const QVector<double> &srcX,
const QVector<double> &srcY,
const QVector<double> &srcZ,
const QVector<double> &srcM,
226 QVector<double> &outX, QVector<double> &outY, QVector<double> &outZ, QVector<double> &outM )
const 237 auto roundVertex = [hSpacing, vSpacing, dSpacing, mSpacing, hasZ, hasM, &srcX, &srcY, &srcZ, &srcM](
QgsPoint & out,
int i )
240 out.setX( std::round( srcX.at( i ) / hSpacing ) * hSpacing );
242 out.setX( srcX.at( i ) );
245 out.setY( std::round( srcY.at( i ) / vSpacing ) * vSpacing );
247 out.setY( srcY.at( i ) );
252 out.setZ( std::round( srcZ.at( i ) / dSpacing ) * dSpacing );
254 out.setZ( srcZ.at( i ) );
260 out.setM( std::round( srcM.at( i ) / mSpacing ) * mSpacing );
262 out.setM( srcM.at( i ) );
267 auto append = [hasZ, hasM, &outX, &outY, &outM, &outZ](
QgsPoint const & point )
269 outX.append( point.x() );
271 outY.append( point.y() );
274 outZ.append( point.z() );
277 outM.append( point.m() );
280 auto isPointEqual = [dSpacing, mSpacing, hasZ, hasM](
const QgsPoint & a,
const QgsPoint & b )
282 return ( a.x() == b.x() )
283 && ( a.y() == b.y() )
284 && ( !hasZ || dSpacing <= 0 || a.z() == b.z() )
285 && ( !hasM || mSpacing <= 0 || a.m() == b.m() );
294 roundVertex( last, 0 );
297 for (
int i = 1; i <
length; ++i )
299 roundVertex( current, i );
300 if ( !isPointEqual( current, last ) )
309 if ( outX.length() < 2 || (
isClosed() && outX.length() < 4 ) )
bool isMeasure() const
Returns true if the geometry contains m values.
A rectangle specified with double values.
virtual bool isEmpty() const
Returns true if the geometry is empty.
int partCount() const override
Returns count of parts contained in the geometry.
bool operator==(const QgsAbstractGeometry &other) const override
Multi point geometry collection.
QVector< QgsRingSequence > QgsCoordinateSequence
bool nextVertex(QgsVertexId &id, QgsPoint &vertex) const override
Returns next vertex id and coordinates.
virtual bool isRing() const
Returns true if the curve is a ring.
void clearCache() const override
Clears any cached parameters associated with the geometry, e.g., bounding boxes.
SegmentationToleranceType
Segmentation tolerance as maximum angle or maximum difference between approximation and circle...
virtual bool pointAt(int node, QgsPoint &point, QgsVertexId::VertexType &type) const =0
Returns the point and vertex id of a point within the curve.
virtual bool equals(const QgsCurve &other) const =0
Checks whether this curve exactly equals another curve.
QgsPoint childPoint(int index) const override
Returns point at index (for geometries without child geometries - i.e.
bool qgsDoubleNear(double a, double b, double epsilon=4 *DBL_EPSILON)
Compare two doubles (but allow some difference)
int childCount() const override
Returns number of child geometries (for geometries with child geometries) or child points (for geomet...
virtual QgsPoint endPoint() const =0
Returns the end point of the curve.
QPolygonF asQPolygonF() const
Returns a QPolygonF representing the points.
virtual double length() const
Returns the length of the geometry.
Type
The WKB type describes the number of dimensions a geometry has.
virtual void clearCache() const
Clears any cached parameters associated with the geometry, e.g., bounding boxes.
Utility class for identifying a unique vertex within a geometry.
int vertexCount(int part=0, int ring=0) const override
Returns the number of vertices of which this geometry is built.
T qgsgeometry_cast(const QgsAbstractGeometry *geom)
virtual double xAt(int index) const =0
Returns the x-coordinate of the specified node in the line string.
Abstract base class for curved geometry type.
Abstract base class for all geometries.
QgsPoint vertexAt(QgsVertexId id) const override
Returns the point corresponding to a specified vertex id.
Point geometry type, with support for z-dimension and m-values.
int vertexNumberFromVertexId(QgsVertexId id) const override
Returns the vertex number corresponding to a vertex id.
QgsAbstractGeometry * boundary() const override
Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the...
virtual bool isClosed() const
Returns true if the curve is closed.
bool snapToGridPrivate(double hSpacing, double vSpacing, double dSpacing, double mSpacing, const QVector< double > &srcX, const QVector< double > &srcY, const QVector< double > &srcZ, const QVector< double > &srcM, QVector< double > &outX, QVector< double > &outY, QVector< double > &outZ, QVector< double > &outM) const
Helper function for QgsCurve subclasses to snap to grids.
QgsCoordinateSequence coordinateSequence() const override
Retrieves the sequence of geometries, rings and nodes.
QVector< QgsPoint > QgsPointSequence
QgsCurve * segmentize(double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const override
Returns a geometry without curves.
bool addGeometry(QgsAbstractGeometry *g) override
Adds a geometry and takes ownership. Returns true in case of success.
QVector< QgsPointSequence > QgsRingSequence
QgsCurve * toCurveType() const override
Returns the geometry converted to the more generic curve type.
QgsRectangle boundingBox() const override
Returns the minimal bounding box for the geometry.
int ringCount(int part=0) const override
Returns the number of rings of which this geometry is built.
void adjacentVertices(QgsVertexId vertex, QgsVertexId &previousVertex, QgsVertexId &nextVertex) const override
Returns the vertices adjacent to a specified vertex within a geometry.
QgsCurve * clone() const override=0
Clones the geometry by performing a deep copy.
virtual QgsLineString * curveToLine(double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const =0
Returns a new line string geometry corresponding to a segmentized approximation of the curve...
bool isNull() const
Test if the rectangle is null (all coordinates zero or after call to setMinimal()).
virtual QgsRectangle calculateBoundingBox() const
Default calculator for the minimal bounding box for the geometry.
virtual double yAt(int index) const =0
Returns the y-coordinate of the specified node in the line string.
static Type zmType(Type type, bool hasZ, bool hasM)
Returns the modified input geometry type according to hasZ / hasM.
virtual QgsPoint startPoint() const =0
Returns the starting point of the curve.
bool operator!=(const QgsAbstractGeometry &other) const override
virtual int numPoints() const =0
Returns the number of points in the curve.
bool is3D() const
Returns true if the geometry is 3D and contains a z-value.
virtual void points(QgsPointSequence &pt) const =0
Returns a list of points within the curve.