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The SKIRT project
advanced radiative transfer for astrophysics
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The SKIRT project
advanced radiative transfer for astrophysics
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#include <Sphere3DSpatialGrid.hpp>
Public Member Functions | |
| std::unique_ptr< PathSegmentGenerator > | createPathSegmentGenerator () const override |
| Public Member Functions inherited from StructuredSphereSpatialGrid | |
| int | cellIndex (Position bfr) const override |
| Position | centralPositionInCell (int m) const override |
| double | diagonal (int m) const override |
| int | dimension () const override |
| Mesh * | meshAzimuthal () const |
| Mesh * | meshPolar () const |
| Mesh * | meshRadial () const |
| int | numCells () const override |
| Position | randomPositionInCell (int m) const override |
| void | setupSelfAfter () override |
| double | volume (int m) const override |
| Public Member Functions inherited from SphereSpatialGrid | |
| Box | boundingBox () const override |
| double | maxRadius () const |
| double | minRadius () const |
| Public Member Functions inherited from SpatialGrid | |
| virtual void | writeGridPlotFiles (const SimulationItem *probe) const |
| Public Member Functions inherited from SimulationItem | |
| template<class T> | |
| T * | find (bool setup=true) const |
| template<class T> | |
| T * | interface (int levels=-999999, bool setup=true) const |
| virtual string | itemName () const |
| void | setup () |
| string | typeAndName () const |
| Public Member Functions inherited from Item | |
| Item (const Item &)=delete | |
| virtual | ~Item () |
| void | addChild (Item *child) |
| const vector< Item * > & | children () const |
| virtual void | clearItemListProperty (const PropertyDef *property) |
| void | destroyChild (Item *child) |
| virtual bool | getBoolProperty (const PropertyDef *property) const |
| virtual vector< double > | getDoubleListProperty (const PropertyDef *property) const |
| virtual double | getDoubleProperty (const PropertyDef *property) const |
| virtual string | getEnumProperty (const PropertyDef *property) const |
| virtual int | getIntProperty (const PropertyDef *property) const |
| virtual vector< Item * > | getItemListProperty (const PropertyDef *property) const |
| virtual Item * | getItemProperty (const PropertyDef *property) const |
| virtual string | getStringProperty (const PropertyDef *property) const |
| int | getUtilityProperty (string name) const |
| virtual void | insertIntoItemListProperty (const PropertyDef *property, int index, Item *item) |
| Item & | operator= (const Item &)=delete |
| Item * | parent () const |
| virtual void | removeFromItemListProperty (const PropertyDef *property, int index) |
| virtual void | setBoolProperty (const PropertyDef *property, bool value) |
| virtual void | setDoubleListProperty (const PropertyDef *property, vector< double > value) |
| virtual void | setDoubleProperty (const PropertyDef *property, double value) |
| virtual void | setEnumProperty (const PropertyDef *property, string value) |
| virtual void | setIntProperty (const PropertyDef *property, int value) |
| virtual void | setItemProperty (const PropertyDef *property, Item *item) |
| virtual void | setStringProperty (const PropertyDef *property, string value) |
| void | setUtilityProperty (string name, int value) |
| virtual string | type () const |
Protected Member Functions | |
| Sphere3DSpatialGrid () | |
| Protected Member Functions inherited from StructuredSphereSpatialGrid | |
| StructuredSphereSpatialGrid () | |
| bool | getCoords (int m, double &rmin, double &thetamin, double &phimin, double &rmax, double &thetamax, double &phimax) const |
| int | index (int i, int j, int k) const |
| virtual double | meshEpsilonScale () const |
| void | write_xy (SpatialGridPlotFile *outfile) const override |
| void | write_xyz (SpatialGridPlotFile *outfile) const override |
| void | write_xz (SpatialGridPlotFile *outfile) const override |
| void | write_yz (SpatialGridPlotFile *outfile) const override |
| void | writeMeridionalStructure (SpatialGridPlotFile *outfile) const |
| Protected Member Functions inherited from SphereSpatialGrid | |
| SphereSpatialGrid () | |
| void | setupSelfBefore () override |
| Protected Member Functions inherited from SpatialGrid | |
| SpatialGrid () | |
| Random * | random () const |
| Protected Member Functions inherited from SimulationItem | |
| SimulationItem () | |
| virtual bool | offersInterface (const std::type_info &interfaceTypeInfo) const |
| Protected Member Functions inherited from Item | |
| Item () | |
Private Types | |
| using | BaseType |
| using | ItemType |
Friends | |
| class | ItemRegistry |
| class | MySegmentGenerator |
Additional Inherited Members | |
| Static Protected Member Functions inherited from SphereSpatialGrid | |
| static int | initPolarGrid (Array &thetav, Array &cosv, const Mesh *mesh) |
| Protected Attributes inherited from StructuredSphereSpatialGrid | |
| vector< double > | _cellVolume |
| Array | _cosv |
| Array | _cv |
| double | _eps |
| int | _Ncells |
| int | _Nphi |
| int | _Nr |
| int | _Ntheta |
| Array | _phiv |
| Array | _rv |
| Array | _sinv |
| Array | _thetav |
The Sphere3DSpatialGrid class is a trivial concrete subclass of the StructuredSphereSpatialGrid class, adding nothing beyond the structured grid itself – see the StructuredSphereSpatialGrid class for a description of the grid's geometry. This class provides the path segment generator appropriate for a plain structured grid (i.e. one without any additional embedded geometry).
This item type is displayed only if the Boolean expression "Level2" evaluates to true after replacing the names by true or false depending on their presence.
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inlineprotected |
Default constructor for concrete Item subclass Sphere3DSpatialGrid: "a 3D spatial grid in spherical coordinates".
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overridevirtual |
This function creates and hands over ownership of a path segment generator (an instance of a PathSegmentGenerator subclass) appropriate for a 3D spherical grid, implemented as a private PathSegmentGenerator subclass.
We represent the path by its parameter equation \({\bf{x}}={\bf{r}}+s\,{\bf{k}}\), and we assume that \({\bf{k}}\) is a unit vector. The two intersection points with a radial boundary sphere \({\bf{x}}^2=r_*^2\) are obtained by solving the quadratic equation \(s^2 + 2\,({\bf{r}}\cdot{\bf{k}})\,s + ({\bf{r}}^2-r_*^2)=0\) for \(s\).
The two intersection points with an angular boundary cone \(x_z^2=c^2\,{\bf{x}}^2\) (with \(c=\cos\theta_*\)) are obtained by solving the quadratic equation \((c^2-k_z^2)\,s^2 + 2\,(c^2\,{\bf{r}}\cdot{\bf{k}}-r_z k_z)\,s + (c^2\,{\bf{r}}^2-r_z^2)=0\) for \(s\). The intersection points with the reflected cone are always more distant than the other cell boundaries (the requirement to include the xy-plane \(\theta=\pi/2\) in the grid ensures that this is true) and thus these phantom points are automatically ignored.
The intersection point with a meriodonal plane \(\sin\varphi_* x = \cos\varphi_* y\) is obtained by
\[ s = -\;\frac{r_\text{x}\sin\varphi_* - r_\text{y}\cos\varphi_*} {k_\text{x}\sin\varphi_* - k_\text{y}\cos\varphi_*} \]
The requirement that \(\varphi_{j+1}-\varphi_j\le2\pi/3\) ensures that the intersection point with the reflected half-plane is always more distant than the other cell boundaries thus that phantom point is automatically ignored.
The segment generator progresses the starting point of the path through the grid along the path's direction. For each step along the way, it calculates the distances to the intersections with all candidate borders of the current cell, and then selects the nearest intersection point.
Implements SpatialGrid.