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greg |
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/* |
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** Author: Christian Reetz ([email protected]) |
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*/ |
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#ifndef __G3SPHERE_H |
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#define __G3SPHERE_H |
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#ifndef M_PI |
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#define M_PI 3.14159265358979323846 |
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#endif |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "gbasic.h" |
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#include "g3vector.h" |
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/** |
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*** Functions for doing some geometry on spheres. |
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*** Subscripts in names indicates: "cc" cartesian coords,"sph" spherical |
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*** coords, normalization on cart. coords ist done, "chk" checks are made. |
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*** If the function name contains no subsript |
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*** no checks are made and normalized cartesian coordinates are expected. |
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*** All functions allow for "res" to be equivalent to some other param. |
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*/ |
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#define G3S_RAD 0 |
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#define G3S_THETA 1 |
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#define G3S_PHI 2 |
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#define G3S_MY 1 |
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#define G3S_MZ 2 |
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#define G3S_RESCOPY(res,co) int copy = 0; \ |
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if (res == co) { \ |
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res = g3v_create(); \ |
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copy = 1; \ |
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} |
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#define G3S_RESFREE(res,co) if (copy) { \ |
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g3v_copy(co,res); \ |
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g3v_free(res); \ |
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res = co; \ |
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} |
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/* |
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** Some transformation between coord. systems: |
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** cc: Cartesian |
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** sph: spherical |
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** mtr: metrical spherical |
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** tr: transversal spherical |
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*/ |
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g3Vec g3s_sphtocc(g3Vec res,g3Vec sph); |
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g3Vec g3s_cctosph(g3Vec res,g3Vec cc); |
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g3Vec g3s_sphwrap(g3Vec sph); |
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g3Vec g3s_trwrap(g3Vec tr); |
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g3Vec g3s_mtrtocc(g3Vec res,g3Vec mtr); |
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g3Vec g3s_cctomtr(g3Vec res,g3Vec cc); |
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g3Vec g3s_trtocc(g3Vec res,g3Vec mtr); |
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g3Vec g3s_cctotr(g3Vec res,g3Vec cc); |
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g3Vec g3s_sphtotr(g3Vec res,g3Vec sph); |
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g3Vec g3s_trtosph(g3Vec res,g3Vec tr); |
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g3Float g3s_dist(const g3Vec cc1,const g3Vec cc2); |
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g3Float g3s_dist_norm(const g3Vec cc1,const g3Vec cc2); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif |
