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deparabolic13 in hyperpoint

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Zeno Rogue
2021-10-07 12:41:29 +02:00
parent ac54fe909d
commit 4ff08f3f3e
1 changed files with 10 additions and 0 deletions
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10
hyperpoint.cpp
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@@ -753,6 +753,16 @@ EX hyperpoint deparabolic10(const hyperpoint h) {
return point31(x, h[1] * exp(x), h[2] * exp(x));
}
/** this looks correct */
EX hyperpoint deparabolic13(hyperpoint h) {
h /= (1 + h[3]);
hyperpoint one = point3(1,0,0);
h -= one;
h /= sqhypot_d(3, h);
h[0] += .5;
return point3(log(2) + log(-h[0]), h[1] * 2, h[2] * 2);
}
EX transmatrix spintoc(const hyperpoint& H, int t, int f) {
transmatrix T = Id;
ld R = hypot(H[f], H[t]);