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twist:: fixes

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This commit is contained in:
Zeno Rogue 2024-06-16 23:00:19 +02:00
parent bbc0c10741
commit 07fe59f3e1
1 changed files with 9 additions and 3 deletions
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12
nonisotropic.cpp
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@ -1622,7 +1622,7 @@ EX namespace hybrid {
tf = hdist0(hm)/2;
alpha = atan2(hm[1], hm[0]);
});
if(nil) return spin(alpha) * xpush(tf*2) * ypush(he*2) * zpush(lev) * C0;
if(nil) return spin(-alpha) * xpush(tf*2) * ypush(-he*2) * zpush(lev) * C0;
return spin(alpha) * twist::uxpush(tf) * twist::uypush(he) * twist::uzpush(lev) * C0;
#else
throw hr_exception();
@ -2363,8 +2363,14 @@ EX namespace twist {
EX transmatrix lift_matrix(const transmatrix& T) {
if(nil) {
hyperpoint h(T[0][2], T[1][2], 0, 0); /* todo take rotate into account */
return nisot::translate(h);
ld alpha;
hybrid::in_underlying_geometry([&] {
hyperpoint h = tC0(T);
transmatrix Spin = iso_inverse(gpushxto0(h) * T);
alpha = atan2(Spin[0][1], Spin[0][0]);
});
hyperpoint h(T[0][2], T[1][2], 0, 1);
return nisot::translate(h) * spin(-alpha);
}
hyperpoint d;
ld alpha, beta, distance;