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preliminary S2xE

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Zeno Rogue
2019-08-18 16:58:44 +02:00
parent 081bb55202
commit e636d3f40c
4 changed files with 45 additions and 11 deletions
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10
nonisotropic.cpp
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@@ -640,18 +640,22 @@ EX namespace product {
dynamicval<geometry_information*> gc(cgip, underlying_cgip);
return mscale(get_corner_position(c, i), exp(plevel * z/2));
}
EX bool product_sphere() { return ginf[underlying].cclass == gcSphere; }
EX hyperpoint inverse_exp(hyperpoint h) {
EX hyperpoint inverse_exp(hyperpoint h, int gen IS(0)) {
hyperpoint res;
res[2] = zlevel(h);
h = zshift(h, -res[2]);
ld r = hypot_d(2, h);
if(r < 1e-6 || h[2] < 1) {
if(r < 1e-6) {
res[0] = h[0];
res[1] = h[1];
}
else {
r = acosh(h[2]) / r;
auto c = acos_auto_clamp(h[2]);
c += 2 * M_PI * gen;
r = c / r;
res[0] = h[0] * r;
res[1] = h[1] * r;
}