Class defining default implementations for some spherical geometry methods. More...

#include <StelSphereGeometry.hpp>

Public Member Functions
	SphericalPolygon (const QVector< QVector< Vec3d > > &contours)
	Constructor from a list of contours.

	SphericalPolygon (const QVector< Vec3d > &contour)
	Constructor from one contour.

	SphericalPolygon (const OctahedronPolygon &octContour)

	SphericalPolygon (const QList< OctahedronPolygon > &octContours)

virtual SphericalRegionType	getType () const

virtual OctahedronPolygon	getOctahedronPolygon () const
	Return the octahedron contour representation of the polygon. More...

virtual QVariantList	toQVariant () const
	Serialize the region into a QVariant map matching the JSON format. More...

virtual void	serialize (QDataStream &out) const
	Serialize the region. This method must allow as fast as possible serialization and work with deserialize().

virtual SphericalCap	getBoundingCap () const
	Return a bounding SphericalCap. More...

virtual bool	contains (const Vec3d &p) const

virtual bool	contains (const SphericalPolygon &r) const

virtual bool	contains (const SphericalConvexPolygon &r) const

virtual bool	contains (const SphericalCap &r) const

virtual bool	contains (const SphericalPoint &r) const

virtual bool	contains (const AllSkySphericalRegion &r) const

virtual bool	intersects (const SphericalPolygon &r) const

virtual bool	intersects (const SphericalConvexPolygon &r) const

virtual bool	intersects (const SphericalCap &r) const

virtual bool	intersects (const SphericalPoint &r) const

virtual bool	intersects (const AllSkySphericalRegion &) const

virtual SphericalRegionP	getIntersection (const SphericalPoint &r) const

virtual SphericalRegionP	getIntersection (const AllSkySphericalRegion &) const

virtual SphericalRegionP	getUnion (const SphericalPoint &) const

virtual SphericalRegionP	getUnion (const EmptySphericalRegion &) const

virtual SphericalRegionP	getSubtraction (const SphericalPoint &) const

virtual SphericalRegionP	getSubtraction (const EmptySphericalRegion &) const

void	setContours (const QVector< QVector< Vec3d > > &contours)
	Set the contours defining the SphericalPolygon. More...

void	setContour (const QVector< Vec3d > &contour)
	Set a single contour defining the SphericalPolygon. More...

QVector< QVector< Vec3d > >	getClosedOutlineContours () const
	Return the list of closed contours defining the polygon boundaries.

Public Member Functions inherited from SphericalRegion
virtual double	getArea () const
	Return the area of the region in steradians.

virtual bool	isEmpty () const
	Return true if the region is empty.

virtual Vec3d	getPointInside () const
	Return a point located inside the region.

virtual QVector< SphericalCap >	getBoundingSphericalCaps () const
	Return the list of SphericalCap bounding the ConvexPolygon.

virtual SphericalRegionP	getEnlarged (double margin) const
	Return an enlarged version of this SphericalRegion so that any point distant of more than the given margin now lays within the region. More...

virtual StelVertexArray	getFillVertexArray () const
	Return an openGL compatible array to be displayed using vertex arrays.

virtual StelVertexArray	getOutlineVertexArray () const
	Get the outline of the contours defining the SphericalPolygon. More...

virtual QVector< QVector< Vec3d > >	getSimplifiedContours () const
	Get the contours defining the SphericalPolygon when combined using a positive winding rule. More...

QByteArray	toJSON () const
	Output a JSON string representing the polygon. More...

bool	contains (const SphericalRegion *r) const
	Returns whether a SphericalRegion is contained into this region. More...

bool	contains (const SphericalRegionP r) const

bool	contains (const EmptySphericalRegion &) const

bool	intersects (const SphericalRegion *r) const
	Returns whether a SphericalRegion intersects with this region. More...

bool	intersects (const SphericalRegionP r) const

bool	intersects (const Vec3d &p) const

bool	intersects (const EmptySphericalRegion &) const

SphericalRegionP	getIntersection (const SphericalRegion *r) const
	Return a new SphericalRegion consisting of the intersection of this and the given region. More...

SphericalRegionP	getIntersection (const SphericalRegionP r) const

virtual SphericalRegionP	getIntersection (const SphericalPolygon &r) const

virtual SphericalRegionP	getIntersection (const SphericalConvexPolygon &r) const

virtual SphericalRegionP	getIntersection (const SphericalCap &r) const

SphericalRegionP	getIntersection (const EmptySphericalRegion &r) const

SphericalRegionP	getUnion (const SphericalRegion *r) const
	Return a new SphericalRegion consisting of the union of this and the given region. More...

SphericalRegionP	getUnion (const SphericalRegionP r) const

virtual SphericalRegionP	getUnion (const SphericalPolygon &r) const

virtual SphericalRegionP	getUnion (const SphericalConvexPolygon &r) const

virtual SphericalRegionP	getUnion (const SphericalCap &r) const

SphericalRegionP	getUnion (const AllSkySphericalRegion &r) const

SphericalRegionP	getSubtraction (const SphericalRegion *r) const
	Return a new SphericalRegion consisting of the subtraction of the given region from this. More...

SphericalRegionP	getSubtraction (const SphericalRegionP r) const

virtual SphericalRegionP	getSubtraction (const SphericalPolygon &r) const

virtual SphericalRegionP	getSubtraction (const SphericalConvexPolygon &r) const

virtual SphericalRegionP	getSubtraction (const SphericalCap &r) const

SphericalRegionP	getSubtraction (const AllSkySphericalRegion &r) const

Static Public Member Functions
static SphericalRegionP	deserialize (QDataStream &in)
	Deserialize the region. This method must allow as fast as possible deserialization.

static SphericalRegionP	multiUnion (const QList< SphericalRegionP > &regions, bool optimizeByPreGrouping=false)
	Create a new SphericalRegionP which is the union of all the passed ones.

static SphericalRegionP	multiIntersection (const QList< SphericalRegionP > &regions)
	Create a new SphericalRegionP which is the intersection of all the passed ones.

Additional Inherited Members
Public Types inherited from SphericalRegion
enum	SphericalRegionType { Point = 0, Cap = 1, AllSky = 2, Polygon = 3, ConvexPolygon = 4, Empty = 5, Invalid = 6 }
	define types for all supported regions.

Detailed Description

All methods are reentrant.

Member Function Documentation

◆ getBoundingCap()

virtual SphericalCap SphericalPolygon::getBoundingCap ( ) const

virtual

This method is heavily used and therefore needs to be very fast. The returned SphericalCap doesn't have to be the smallest one, but smaller is better.

Reimplemented from SphericalRegion.

◆ getOctahedronPolygon()

virtual OctahedronPolygon SphericalPolygon::getOctahedronPolygon ( ) const

inlinevirtual

It can be used for safe computation of intersection/union in the general case.

Implements SphericalRegion.

◆ setContour()

void SphericalPolygon::setContour ( const QVector< Vec3d > & contour )

inline

Parameters

contour a contour defining the polygon area.

◆ setContours()

void SphericalPolygon::setContours ( const QVector< QVector< Vec3d > > & contours )

inline

Parameters

contours the list of contours defining the polygon area. The contours are combined using the positive winding rule, meaning that the polygon is the union of the positive contours minus the negative ones.

◆ toQVariant()

virtual QVariantList SphericalPolygon::toQVariant ( ) const

virtual

The format is:

[[[ra,dec], [ra,dec], [ra,dec], [ra,dec]], [[ra,dec], [ra,dec], [ra,dec]],[...]]

it is a list of closed contours, with each points defined by ra dec in degree in the ICRS frame.

Implements SphericalRegion.

Reimplemented in SphericalTexturedPolygon.

Public Member Functions

Static Public Member Functions