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slr::lift_matrix as a separate function

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This commit is contained in:
Zeno Rogue 2020-04-01 11:26:58 +02:00
parent 9b014ab824
commit c60714f145
1 changed files with 17 additions and 19 deletions
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36
nonisotropic.cpp
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@ -1815,6 +1815,22 @@ EX namespace rots {
return cspin(3, 2, -z) * cspin(0, 1, -z); return cspin(3, 2, -z) * cspin(0, 1, -z);
} }
EX transmatrix lift_matrix(const transmatrix& T) {
hyperpoint d;
ld alpha, beta, distance;
transmatrix Spin;
hybrid::in_underlying_geometry([&] {
hyperpoint h = tC0(T);
Spin = inverse(gpushxto0(h) * T);
d = hr::inverse_exp(h, iTable);
alpha = atan2(Spin[0][1], Spin[0][0]);
distance = hdist0(h);
beta = atan2(h[1], h[0]);
});
for(int k=0; k<3; k++) Spin[3][k] = Spin[k][3] = 0; Spin[3][3] = 1;
return spin(beta) * uxpush(distance/2) * spin(-beta+alpha);
}
struct hrmap_rotation_space : hybrid::hrmap_hybrid { struct hrmap_rotation_space : hybrid::hrmap_hybrid {
std::unordered_map<int, transmatrix> saved_matrices; std::unordered_map<int, transmatrix> saved_matrices;
@ -1830,26 +1846,8 @@ EX namespace rots {
auto &M = saved_matrices[id]; auto &M = saved_matrices[id];
if(M[3][3]) return M; if(M[3][3]) return M;
/*if(PURE && hybrid::underlying != gArchimedean) {
ld A = master_to_c7_angle();
transmatrix Q = spin(-A + 2 * M_PI * i / S7) * uxpush(cgi.tessf) * spin(M_PI - 2 * M_PI * j / S7 + A);
return Q;
} */
hyperpoint d;
ld alpha, beta, distance;
transmatrix Spin;
cell *cw = where[c1].first; cell *cw = where[c1].first;
in_underlying([&] { return M = lift_matrix(PIU(currentmap->adj(cw, i)));
transmatrix T = currentmap->adj(cw, i);
hyperpoint h = tC0(T);
Spin = inverse(gpushxto0(h) * T);
d = hr::inverse_exp(h, iTable);
alpha = atan2(Spin[0][1], Spin[0][0]);
distance = hdist0(h);
beta = atan2(h[1], h[0]);
});
for(int k=0; k<3; k++) Spin[3][k] = Spin[k][3] = 0; Spin[3][3] = 1;
return M = spin(beta) * uxpush(distance/2) * spin(-beta+alpha);
} }
virtual transmatrix relative_matrix(cell *c2, cell *c1, const hyperpoint& hint) override { virtual transmatrix relative_matrix(cell *c2, cell *c1, const hyperpoint& hint) override {