Clipper
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Wrapper class for third-order (cubic) interpolation fns. More...
#include <map_interp.h>
Static Public Member Functions | |
template<class M > | |
static bool | can_interp (const M &map, const Coord_map &pos) |
Test if we can interpolate in map M at coord. More... | |
template<class T , class M > | |
static void | interp (const M &map, const Coord_map &pos, T &val) |
Interpolate map M using type T at coord. More... | |
template<class T , class M > | |
static void | interp_grad (const M &map, const Coord_map &pos, T &val, Grad_map< T > &grad) |
template<class T , class M > | |
static void | interp_curv (const M &map, const Coord_map &pos, T &val, Grad_map< T > &grad, Curv_map< T > &curv) |
static int | order () |
Order of interpolant. | |
Wrapper class for third-order (cubic) interpolation fns.
These can be used through the built-in methods in Xmap/NXmap, or passed to methods to allow a choice of interpolation methods, or directly by providing the map as an argument. For example:
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Test if we can interpolate in map M at coord.
The map is queried to see if interpolation is possible at the given coord. For a crystallographic map, this is always true. For a non-crystallographic map, this depends if the point and enough neighbours are in the grid.
map | The map on which to perform the calculation. |
pos | The map coord at which the density is to be calcuated. |
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Interpolate map M using type T at coord.
The value of the map at the supplied map coordinate is calculated by third order (cubic) interpolation based on the surrounding 64 points.
pos | The fractional coord at which the density is to be calcuated. |
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The value of the map at the supplied map coordinate and its gradient are calculated by third order (cubic) interpolation based on the surrounding 64 points.
pos | The fractional coord at which the density is to be calcuated. |
val | The value of the density at that point. |
grad | The interpolated value as a gradient vector with respect to the fractional coordinates (see Cell::coord_orth). |
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The value of the map at the supplied map coordinate and its gradient are calculated by third order (cubic) interpolation based on the surrounding 64 points.
pos | The fractional coord at which the density is to be calcuated. |
val | The value of the density at that point. |
grad | The interpolated value as a gradient vector with respect to the fractional coordinates (see Cell::coord_orth). |