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revert hyperbolic qtm

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Zeno Rogue 2020-05-09 00:57:59 +02:00
parent a30f4a89f7
commit 83c0ade9d6
1 changed files with 11 additions and 0 deletions
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nonisotropic.cpp
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@ -1931,6 +1931,17 @@ EX namespace rots {
/** reinterpret the given point of rotspace as a rotation matrix in the underlying geometry */
EX transmatrix qtm(hyperpoint h) {
if(hyperbolic) {
hyperpoint k = slr::to_phigans(h);
ld z = k[2]; k[2] = 0;
ld r = hypot_d(2, k);
// k[1] = -k[1];
k[0] = -k[0];
if(r) k = tangent_length(k, asinh(r) * 2);
return spin(-z * 2) * rgpushxto0(direct_exp(k));
}
ld& x = h[0];
ld& y = h[1];
ld& z = h[2];