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three new projections

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Zeno Rogue
2020-08-20 16:02:34 +02:00
parent c9e0529a88
commit 64cb6772e8
4 changed files with 92 additions and 5 deletions
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hypgraph.cpp
+69
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@@ -343,6 +343,8 @@ hyperpoint compute_hybrid(hyperpoint H, int rootid) {
EX ld signed_sqrt(ld x) { return x > 0 ? sqrt(x) : -sqrt(-x); }
EX int axial_x, axial_y;
EX void applymodel(shiftpoint H_orig, hyperpoint& ret) {
hyperpoint H = H_orig.h;
@@ -486,6 +488,73 @@ EX void applymodel(shiftpoint H_orig, hyperpoint& ret) {
break;
}
case mdAxial: {
models::apply_orientation_yz(H[1], H[2]);
models::apply_orientation(H[0], H[1]);
ld& mt = pconf.model_transition;
ld z = H[LDIM];
if(mt != 1) z += (1-mt) * pconf.alpha;
ret[0] = H[0] / z;
ret[1] = H[1] / z;
if(GDIM == 3) ret[2] = H[2] / z;
else ret[2] = 0;
ret[3] = 1;
if(mt) for(int i=0; i<LDIM; i++) {
if(mt < 1)
ret[i] *= mt;
ret[i] = atan_auto(ret[i]);
if(mt < 1)
ret[i] /= mt;
}
if(sphere) ret[0] += axial_x * M_PI, ret[1] += axial_y * M_PI;
models::apply_orientation(ret[1], ret[0]);
models::apply_orientation_yz(ret[2], ret[1]);
break;
}
case mdAntiAxial: {
models::apply_orientation_yz(H[1], H[2]);
models::apply_orientation(H[0], H[1]);
ret[0] = asin_auto(H[0]);
ret[1] = asin_auto(H[1]);
ret[2] = 0; ret[3] = 1;
models::apply_orientation(ret[1], ret[0]);
models::apply_orientation_yz(ret[2], ret[1]);
break;
}
case mdQuadrant: {
H = space_to_perspective(H);
models::apply_orientation_yz(H[1], H[2]);
models::apply_orientation(H[0], H[1]);
tie(H[0], H[1]) = make_pair((H[0] + H[1]) / sqrt(2), (H[1] - H[0]) / sqrt(2));
H[1] += 1;
double rad = sqhypot_d(GDIM, H);
H /= -rad;
H[1] += .5;
H *= 2;
ld x = exp(-H[0]/2);
ret[0] = -H[1] * x - 1;
ret[1] = H[1] / x + 1;
models::apply_orientation(ret[1], ret[0]);
models::apply_orientation_yz(ret[2], ret[1]);
break;
}
case mdHorocyclic: {
find_zlev(H);