src/core/math/igmcore_spherical_trigonometry.f90 File Reference

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Modules
module	igmcore_spherical_trigonometry
	This module provides some subroutines for performing the operations associated with spherical trigonometry.
Functions/Subroutines
real(DP), public	igmcore_spherical_trigonometry::geodesic_arc_length (radius, p1, p2)
	Calculates the geodesic distance between point A and point B on a sphere.
real(DP), public	igmcore_spherical_trigonometry::spherical_tri_area (radius, orth_p1, orth_p2, orth_p3)
	Calculates the area of a spherical triangle which consist of three points(point P1, P2 and P3) on a sphere.
real(DP), public	igmcore_spherical_trigonometry::spherical_penta_area (radius, orth_p1, orth_p2, orth_p3, orth_p4, orth_p5)
	Calculates the area of a spherical pentagon which consist of five points(point P1, P2, P3, P4 and P5) on a sphere.
real(DP), public	igmcore_spherical_trigonometry::spherical_hex_area (radius, orth_p1, orth_p2, orth_p3, orth_p4, orth_p5, orth_p6)
	Calculates the area of a spherical hexagon which consist of five points(point P1, P2, P3, P4, P5 and P6) on a sphere.
real(DP)	igmcore_spherical_trigonometry::geodesic_arc_length_angle (radius, p1, p2)
	球面上における 2 点間の距離を単位球の中心に対する角度として計算する.
real(DP)	igmcore_spherical_trigonometry::calc_angle (coresp_arc, arc1, arc2)
	球面三角形 ABC の一角である角 BAC を 3 辺の弧の長さ(この弧の長さは単位球の中心に対する角度を使って表す)から求める.