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improved the quality of 3D models from conformal menu

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Zeno Rogue
2018-03-24 15:15:30 +01:00
parent 74cc23f1c2
commit d3c9bfdd92
10 changed files with 72 additions and 27 deletions
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13
hypgraph.cpp
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@@ -129,20 +129,23 @@ void applymodel(hyperpoint H, hyperpoint& ret) {
switch(cgclass) {
case gcHyperbolic: {
ld zl = zlevel(H);
ret = H / H[2];
ret[2] = sqrt(1 - sqhypot2(ret));
ret = ret * (1 + (zl - 1) * ret[2]);
break;
}
case gcEuclid: {
// stereographic projection to a sphere
auto hd = hdist0(H) / H[2];
if(hd == 0) H[2] = -1;
auto hd = hdist0(H) / vid.euclid_to_sphere;
if(hd == 0) ret = hpxyz(0, 0, -1);
else {
ld x = 2 * hd / (1 + hd * hd);
ld y = x / hd;
H = H * x / (hd * H[2]);
H[2] = 1 - y;
ret = H * x / hd / vid.euclid_to_sphere;
ret[2] = (1 - y);
ret = ret * (1 + (H[2]-1) * y / vid.euclid_to_sphere);
}
break;
}
@@ -153,7 +156,7 @@ void applymodel(hyperpoint H, hyperpoint& ret) {
}
}
ret = rotmatrix(0, 2, ball) * ret;
ret = rotmatrix(M_PI/2 + ball, 1, 2) * ret;
ghcheck(ret, H);
return;