32 return QStringLiteral(
"Polygon" );
37 auto result = qgis::make_unique< QgsPolygon >();
39 return result.release();
90 for (
int i = 0; i < nRings; ++i )
93 line->fromWkbPoints( ringType, wkbPtr );
114 int binarySize =
sizeof( char ) +
sizeof( quint32 ) +
sizeof( quint32 );
123 binarySize +=
sizeof( quint32 ) + curve->numPoints() * ( 2 + curve->is3D() + curve->isMeasure() ) *
sizeof(
double );
127 wkbArray.resize( binarySize );
130 wkb << static_cast<quint32>(
wkbType() );
131 wkb << static_cast<quint32>( (
nullptr !=
mExteriorRing ) + mInteriorRings.size() );
138 for (
const QgsCurve *curve : mInteriorRings )
141 curve->points( pts );
162 if ( lineString && !lineString->
isClosed() )
195 if ( lineString && !lineString->
isClosed() )
228 for (
int i = 0; i < nInteriorRings; ++i )
239 return std::numeric_limits< double >::quiet_NaN();
242 double minimumDistance = DBL_MAX;
243 double minDistX = 0.0;
244 double minDistY = 0.0;
247 for (
int ringIndex = 0; ringIndex < numRings; ++ringIndex )
252 for (
int i = 0, j = len - 1; i < len; j = i++ )
254 double aX = ring->
xAt( i );
255 double aY = ring->
yAt( i );
256 double bX = ring->
xAt( j );
257 double bY = ring->
yAt( j );
259 if ( ( ( aY > y ) != ( bY > y ) ) &&
260 ( x < ( bX - aX ) * ( y - aY ) / ( bY - aY ) + aX ) )
267 return ( inside ? 1 : -1 ) * std::sqrt( minimumDistance );
280 for (
int i = 0; i < nInteriorRings; ++i )
virtual void setExteriorRing(QgsCurve *ring)
Sets the exterior ring of the polygon.
void clearCache() const override
Clears any cached parameters associated with the geometry, e.g., bounding boxes.
QgsPolygon * surfaceToPolygon() const override
Get a polygon representation of this surface.
virtual void addInteriorRing(QgsCurve *ring)
Adds an interior ring to the geometry (takes ownership)
Multi line string geometry collection.
Curve polygon geometry type.
void clear() override
Clears the geometry, ie reset it to a null geometry.
double pointDistanceToBoundary(double x, double y) const
Returns the distance from a point to the boundary of the polygon (either the exterior ring or any clo...
static endian_t endian()
Returns whether this machine uses big or little endian.
QgsAbstractGeometry * boundary() const override
Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the...
QgsWkbTypes::Type mWkbType
int numPoints() const override
Returns the number of points in the curve.
QVector< QgsCurve * > mInteriorRings
void addInteriorRing(QgsCurve *ring) override
Adds an interior ring to the geometry (takes ownership)
Type
The WKB type describes the number of dimensions a geometry has.
void clear() override
Clears the geometry, ie reset it to a null geometry.
double yAt(int index) const override
Returns the y-coordinate of the specified node in the line string.
void setZMTypeFromSubGeometry(const QgsAbstractGeometry *subggeom, QgsWkbTypes::Type baseGeomType)
Updates the geometry type based on whether sub geometries contain z or m values.
T qgsgeometry_cast(const QgsAbstractGeometry *geom)
void close()
Closes the line string by appending the first point to the end of the line, if it is not already clos...
bool fromWkb(QgsConstWkbPtr &wkb) override
Sets the geometry from a WKB string.
QgsCurvePolygon * toCurveType() const override
Returns the geometry converted to the more generic curve type QgsCurvePolygon.
Abstract base class for curved geometry type.
QString geometryType() const override
Returns a unique string representing the geometry type.
Abstract base class for all geometries.
QgsPolygon * createEmptyWithSameType() const override
Creates a new geometry with the same class and same WKB type as the original and transfers ownership...
QgsWkbTypes::Type wkbType() const
Returns the WKB type of the geometry.
bool addGeometry(QgsAbstractGeometry *g) override
Adds a geometry and takes ownership. Returns true in case of success.
virtual bool isClosed() const
Returns true if the curve is closed.
QVector< QgsPoint > QgsPointSequence
QgsCurve * segmentize(double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const override
Returns a geometry without curves.
void setExteriorRing(QgsCurve *ring) override
Sets the exterior ring of the polygon.
Line string geometry type, with support for z-dimension and m-values.
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...
QByteArray asWkb() const override
Returns a WKB representation of the geometry.
QgsPolygon * clone() const override
Clones the geometry by performing a deep copy.
static void pointsToWKB(QgsWkbPtr &wkb, const QgsPointSequence &points, bool is3D, bool isMeasure)
Returns a LinearRing { uint32 numPoints; Point points[numPoints]; }.
double xAt(int index) const override
Returns the x-coordinate of the specified node in the line string.
static double sqrDistToLine(double ptX, double ptY, double x1, double y1, double x2, double y2, double &minDistX, double &minDistY, double epsilon)
Returns the squared distance between a point and a line.
virtual bool convertTo(QgsWkbTypes::Type type)
Converts the geometry to a specified type.
std::unique_ptr< QgsCurve > mExteriorRing
static Type flatType(Type type)
Returns the flat type for a WKB type.
QgsWkbTypes::Type readHeader() const
readHeader
virtual bool hasCurvedSegments() const
Returns true if the geometry contains curved segments.