File Spherical.cu

FileList > src > Spherical.cu

#include "Spherical.h"

Public Functions

Type	Name
__host__ __device__ T	calcCM (T Radius, T delta, T yo, int iy) Calculate the scale factor for the y face length in a spherical model. This function computes the scale factor based on the sphere's radius, grid spacing, origin offset, and index in the y direction. Scale factor for y face length (x face lengh scale is always 1 in spherical model assuming that lat long are entered)
template __host__ __device__ double	calcCM (double Radius, double delta, double yo, int iy)
template __host__ __device__ float	calcCM (float Radius, float delta, float yo, int iy)
__host__ __device__ T	calcFM (T Radius, T delta, T yo, T iy) Calculate the scale factor for the y face length in a spherical model. This function computes the scale factor based on the sphere's radius, grid spacing, origin offset and index in the y direction. Scale factor for y face length (x face lengh scale is always 1 in spherical model assuming that lat long are entered)
template __host__ __device__ double	calcFM (double Radius, double delta, double yo, double iy)
template __host__ __device__ float	calcFM (float Radius, float delta, float yo, float iy)
__host__ __device__ T	haversin (T Radius, T lon1, T lat1, T lon2, T lat2) Classic Haversine formula to calculate great-circle distance between two points on a sphere. The function is too slow to use directly in BG_flood engine but is more usable (i.e. naive) for model setup.
__host__ __device__ T	spharea (T Radius, T lon, T lat, T dx) Calculate the surface area of a spherical cap.
template __host__ __device__ double	spharea (double Radius, double lon, double lat, double dx)
template __host__ __device__ float	spharea (float Radius, float lon, float lat, float dx)

Public Functions Documentation

function calcCM

Calculate the scale factor for the y face length in a spherical model. This function computes the scale factor based on the sphere's radius, grid spacing, origin offset, and index in the y direction. Scale factor for y face length (x face lengh scale is always 1 in spherical model assuming that lat long are entered)

template<class T>
__host__ __device__ T calcCM (
    T Radius,
    T delta,
    T yo,
    int iy
)

Parameters:

Radius Radius of the sphere
delta Grid spacing
yo Origin offset in the y direction
iy Index in the y direction

function calcCM

template __host__ __device__ double calcCM (
    double Radius,
    double delta,
    double yo,
    int iy
)

function calcCM

template __host__ __device__ float calcCM (
    float Radius,
    float delta,
    float yo,
    int iy
)

function calcFM

Calculate the scale factor for the y face length in a spherical model. This function computes the scale factor based on the sphere's radius, grid spacing, origin offset and index in the y direction. Scale factor for y face length (x face lengh scale is always 1 in spherical model assuming that lat long are entered)

template<class T>
__host__ __device__ T calcFM (
    T Radius,
    T delta,
    T yo,
    T iy
)

Parameters:

Radius Radius of the sphere
delta Grid spacing
yo Origin offset in the y direction
iy Index in the y direction

function calcFM

template __host__ __device__ double calcFM (
    double Radius,
    double delta,
    double yo,
    double iy
)

function calcFM

template __host__ __device__ float calcFM (
    float Radius,
    float delta,
    float yo,
    float iy
)

function haversin

Classic Haversine formula to calculate great-circle distance between two points on a sphere. The function is too slow to use directly in BG_flood engine but is more usable (i.e. naive) for model setup.

template<class T>
__host__ __device__ T haversin (
    T Radius,
    T lon1,
    T lat1,
    T lon2,
    T lat2
)

Parameters:

Radius Radius of the sphere
lon1 Longitude of the first point (in degrees)
lat1 Latitude of the first point (in degrees)
lon2 Longitude of the second point (in degrees)
lat2 Latitude of the second point (in degrees)

Returns:

Great-circle distance between the two points

function spharea

Calculate the surface area of a spherical cap.

template<class T>
__host__ __device__ T spharea (
    T Radius,
    T lon,
    T lat,
    T dx
)

Template parameters:

T Data type (float or double)

Parameters:

Radius Radius of the sphere
lon Longitude of the center of the cap (in degrees)
lat Latitude of the center of the cap (in degrees)
dx Grid spacing (in degrees)

Returns:

Surface area of the spherical cap

function spharea

template __host__ __device__ double spharea (
    double Radius,
    double lon,
    double lat,
    double dx
)

function spharea

template __host__ __device__ float spharea (
    float Radius,
    float lon,
    float lat,
    float dx
)

The documentation for this class was generated from the following file src/Spherical.cu