SphMapSphMap
-
Map 3-d Cartesian to 2-d spherical coordinates
- Description:
- A SphMap is a MappingMapping which transforms points from a
3-dimensional Cartesian coordinate system into a 2-dimensional
spherical coordinate system (longitude and latitude on a unit
sphere centred at the origin). It works by regarding the input
coordinates as position vectors and finding their intersection
with the sphere surface. The inverse transformation always
produces points which are a unit distance from the origin
(i.e. unit vectors).
- Constructor Function:
- astSphMapastSphMap
-
Inheritance
- The SphMap class inherits from the Mapping class.
-
Attributes
- In addition to those attributes common to all Mappings, every
SphMap also has the following attributes:
- UnitRadiusUnitRadius: SphMap input vectors lie on a unit sphere?
- PolarLongPolarLong: The longitude value to assign to either pole
-
Functions
- The SphMap class does not define any new functions beyond those
which are applicable to all Mappings.