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| LutMap (std::vector< double > const &lut, double start, double inc, std::string const &options="") |
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virtual | ~LutMap () |
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| LutMap (LutMap const &)=default |
| Copy constructor: make a deep copy. More...
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| LutMap (LutMap &&)=default |
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LutMap & | operator= (LutMap const &)=delete |
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LutMap & | operator= (LutMap &&)=default |
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std::shared_ptr< LutMap > | copy () const |
| Return a deep copy of this object. More...
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double | getLutEpsilon () const |
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int | getLutInterp () const |
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virtual | ~Mapping () |
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| Mapping (Mapping const &)=default |
| Copy constructor: make a deep copy. More...
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| Mapping (Mapping &&)=default |
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Mapping & | operator= (Mapping const &)=delete |
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Mapping & | operator= (Mapping &&)=default |
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std::shared_ptr< Mapping > | copy () const |
| Return a deep copy of this object. More...
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int | getNIn () const |
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int | getNOut () const |
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bool | getIsSimple () const |
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bool | isInverted () const |
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bool | getIsLinear () const |
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bool | getReport () const |
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bool | hasForward () const |
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bool | hasInverse () const |
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std::shared_ptr< Mapping > | inverted () const |
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Array2D | linearApprox (PointD const &lbnd, PointD const &ubnd, double tol) const |
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SeriesMap | then (Mapping const &next) const |
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ParallelMap | under (Mapping const &next) const |
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double | rate (PointD const &at, int ax1, int ax2) const |
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void | setReport (bool report) |
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std::shared_ptr< Mapping > | simplified () const |
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void | applyForward (ConstArray2D const &from, Array2D const &to) const |
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Array2D | applyForward (ConstArray2D const &from) const |
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std::vector< double > | applyForward (std::vector< double > const &from) const |
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void | applyInverse (ConstArray2D const &from, Array2D const &to) const |
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Array2D | applyInverse (ConstArray2D const &from) const |
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std::vector< double > | applyInverse (std::vector< double > const &from) const |
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void | tranGridForward (PointI const &lbnd, PointI const &ubnd, double tol, int maxpix, Array2D const &to) const |
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Array2D | tranGridForward (PointI const &lbnd, PointI const &ubnd, double tol, int maxpix, int nPts) const |
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void | tranGridInverse (PointI const &lbnd, PointI const &ubnd, double tol, int maxpix, Array2D const &to) const |
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Array2D | tranGridInverse (PointI const &lbnd, PointI const &ubnd, double tol, int maxpix, int nPts) const |
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virtual | ~Object () |
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| Object (Object const &object) |
| Copy constructor: make a deep copy. More...
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| Object (Object &&)=default |
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Object & | operator= (Object const &)=delete |
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Object & | operator= (Object &&)=default |
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bool | operator== (Object const &rhs) const |
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bool | operator!= (Object const &rhs) const |
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std::shared_ptr< Object > | copy () const |
| Return a deep copy of this object. More...
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void | clear (std::string const &attrib) |
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bool | hasAttribute (std::string const &attrib) const |
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std::string | getClassName () const |
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std::string | getID () const |
| Get ID: object identification string that is not copied. More...
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std::string | getIdent () const |
| Get Ident: object identification string that is copied. More...
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int | getNObject () const |
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int | getObjSize () const |
| Get ObjSize: the in-memory size of the AST object in bytes. More...
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int | getRefCount () const |
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bool | getUseDefs () const |
| Get UseDefs: allow use of default values for Object attributes? More...
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void | lock (bool wait) |
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bool | same (Object const &other) const |
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void | setID (std::string const &id) |
| Set ID: object identification string that is not copied. More...
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void | setIdent (std::string const &ident) |
| Set Ident: object identification string that is copied. More...
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void | setUseDefs (bool usedefs) |
| Set UseDefs: allow use of default values for Object attributes? More...
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void | show (std::ostream &os, bool showComments=true) const |
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std::string | show (bool showComments=true) const |
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bool | test (std::string const &attrib) const |
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void | unlock (bool report=false) |
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AstObject const * | getRawPtr () const |
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AstObject * | getRawPtr () |
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virtual std::shared_ptr< Object > | copyPolymorphic () const override |
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| LutMap (AstLutMap *rawptr) |
| Construct an LutMap from a raw AST pointer. More...
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| Mapping (AstMapping *rawMap) |
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template<typename Class > |
std::shared_ptr< Class > | decompose (int i, bool copy) const |
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| Object (AstObject *object) |
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template<typename T , typename AstT > |
std::shared_ptr< T > | copyImpl () const |
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bool | getB (std::string const &attrib) const |
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std::string const | getC (std::string const &attrib) const |
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double | getD (std::string const &attrib) const |
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float | getF (std::string const &attrib) const |
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int | getI (std::string const &attrib) const |
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long int | getL (std::string const &attrib) const |
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void | set (std::string const &setting) |
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void | setB (std::string const &attrib, bool value) |
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void | setC (std::string const &attrib, std::string const &value) |
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void | setD (std::string const &attrib, double value) |
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void | setF (std::string const &attrib, float value) |
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void | setI (std::string const &attrib, int value) |
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void | setL (std::string const &attrib, long int value) |
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LutMap is a specialised form of Mapping which transforms 1-dimensional coordinates by using linear interpolation in a lookup table. Each input coordinate value is first scaled to give the index of an entry in the table by subtracting a starting value (the input coordinate corresponding to the first table entry) and dividing by an increment (the difference in input coordinate value between adjacent table entries).
The resulting index will usually contain a fractional part, so the output coordinate value is then generated by interpolating linearly between the appropriate entries in the table. If the index lies outside the range of the table, linear extrapolation is used based on the two nearest entries (i.e. the two entries at the start or end of the table, as appropriate).
If the lookup table entries increase or decrease monotonically, then the inverse transformation may also be performed.
Attributes
In addition to those attributes provided by Mapping and Object, LutMap has the following attributes:
- LutEpsilon: The relative error of the values in the table.
- LutInterp: The interpolation method to use between table entries.
Notes
- If the entries in the lookup table increase or decrease monotonically, then the LutMap will have an inverse transformation; otherwise it will not.