Stellarium  0.19.3
Public Member Functions | Static Public Attributes
EmptySphericalRegion Class Reference

Special SphericalRegion for — UMM, WHAT EXACTLY?

#include <StelSphereGeometry.hpp>

Public Member Functions

virtual SphericalRegionType getType () const
virtual OctahedronPolygon getOctahedronPolygon () const
 Return the octahedron contour representation of the polygon. More...
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 SphericalCap getBoundingCap () const
 Return a bounding SphericalCap. More...
virtual QVariantList toQVariant () const
 Serialize the region into a QVariant map matching the JSON format. More...
virtual void serialize (QDataStream &) const
 Serialize the region. This method must allow as fast as possible serialization and work with deserialize().
virtual bool contains (const Vec3d &) const
virtual bool contains (const SphericalPolygon &) const
virtual bool contains (const SphericalConvexPolygon &) const
virtual bool contains (const SphericalCap &) const
virtual bool contains (const SphericalPoint &) const
virtual bool contains (const AllSkySphericalRegion &) const
virtual bool intersects (const SphericalPolygon &) const
virtual bool intersects (const SphericalConvexPolygon &) const
virtual bool intersects (const SphericalCap &) const
virtual bool intersects (const SphericalPoint &) const
virtual bool intersects (const AllSkySphericalRegion &) const
- Public Member Functions inherited from SphericalRegion
virtual QVector< SphericalCapgetBoundingSphericalCaps () 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
virtual SphericalRegionP getIntersection (const SphericalPoint &r) const
virtual SphericalRegionP getIntersection (const AllSkySphericalRegion &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
virtual SphericalRegionP getUnion (const SphericalPoint &r) const
SphericalRegionP getUnion (const AllSkySphericalRegion &r) const
virtual SphericalRegionP getUnion (const EmptySphericalRegion &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
virtual SphericalRegionP getSubtraction (const SphericalPoint &r) const
SphericalRegionP getSubtraction (const AllSkySphericalRegion &r) const
virtual SphericalRegionP getSubtraction (const EmptySphericalRegion &r) const

Static Public Attributes

static const SphericalRegionP staticInstance

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.

Member Function Documentation

◆ getBoundingCap()

virtual SphericalCap EmptySphericalRegion::getBoundingCap ( ) const

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 EmptySphericalRegion::getOctahedronPolygon ( ) const

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

Implements SphericalRegion.

◆ toQVariant()

virtual QVariantList EmptySphericalRegion::toQVariant ( ) const

The format is ["EMPTY"]

Implements SphericalRegion.