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hemisphere in spherical

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This commit is contained in:
Zeno Rogue 2023-08-15 14:21:19 +02:00
parent b018582f44
commit e22c34b343
2 changed files with 65 additions and 45 deletions
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5
drawing.cpp
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@ -2445,6 +2445,11 @@ EX void draw_main() {
ptd->draw();
}
for(auto& ptd: ptds) if(ptd->prio == PPR::OUTCIRCLE) {
auto c = dynamic_cast<dqi_poly*> (&*ptd);
if(c) { c->color = 0; c->outline = 0; }
}
hemi_side *= -1;
draw_main();
hemi_side = 0;

105
hypgraph.cpp
View File

@ -602,6 +602,13 @@ hyperpoint to_square(hyperpoint H) {
return res;
}
EX hyperpoint hyperboloid_form(hyperpoint ret) {
ret = cspin90(2, 1) * ret / 3;
if(hyperbolic) ret[1] += 1/3.;
ret = pconf.ball() * ret;
return ret;
}
EX void apply_other_model(shiftpoint H_orig, hyperpoint& ret, eModel md) {
hyperpoint H = H_orig.h;
@ -1027,9 +1034,7 @@ EX void apply_other_model(shiftpoint H_orig, hyperpoint& ret, eModel md) {
if(sphere) ret[2] = -ret[2];
}
ret = cspin90(2, 1) * ret / 3;
if(hyperbolic) ret[1] += 1/3.;
ret = pconf.ball() * ret;
ret = hyperboloid_form(ret);
break;
}
@ -2873,58 +2878,68 @@ EX void draw_boundary(int w) {
as_hyperboloid:
auto d = deconstruct_ball();
ld& tz = pconf.top_z;
ld mz = sphere ? atan(sqrt(tz*tz-1)) : acosh(tz);
ld mz = acosh(tz);
for(int it=0; it < (sphere ? 2 : 1); it++) {
auto fc1 = fc;
auto p1 = p;
if(abs(d.sin_beta) <= abs(d.cos_beta) + 1e-5) {
ld step = .01 / (1 << vid.linequality);
hyperpoint a;
for(ld t=-1; t<=1; t += step) {
a = xpush0(t * mz);
if(t != 0) {
a[1] = d.sin_beta * a[2] / -d.cos_beta;
ld v = -1 + a[2] * a[2] - a[1] * a[1];
if(v < 0) continue;
a[0] = sqrt(v);
if(t < 0) a[0] = -a[0];
if(abs(d.sin_beta) <= abs(d.cos_beta) + 1e-5) {
queuereset(mdPixel, p1);
int steps = 100 << vid.linequality;
hyperpoint a;
auto hpolar = [] (ld phi, ld r) {
ld s = sinh(r);
return point3(cos(phi) * s, -sin(phi) * s, cosh(r));
};
auto hform = [&] (hyperpoint h) {
h = hyperboloid_form(d.igamma * h);
h[0] *= current_display->radius; h[1] *= current_display->radius; h[2] = 0;
if(it) h[0] *= -1, h[1] *= -1;
return h;
};
for(int ts=-steps; ts<=steps; ts++) {
ld t = ts * 1. / steps;
a = hpolar(0, t * mz);
if(t != 0) {
a[1] = d.sin_beta * a[2] / -d.cos_beta;
ld v = -1 + a[2] * a[2] - a[1] * a[1];
if(v < 0) continue;
a[0] = sqrt(v);
if(t < 0) a[0] = -a[0];
}
curvepoint(hform(a));
}
curvepoint(a);
}
if((d.sin_beta > 0) ^ (d.cos_beta < 0)) {
ld alpha = M_PI - atan2(a[0], -a[1]);
if((d.sin_beta > 0) ^ (d.cos_beta < 0)) {
ld alpha = (M_PI - atan2(a[0], -a[1])) / steps;
for(int ts=-steps; ts<=steps; ts++)
curvepoint(hform(hpolar(-90._deg - ts * alpha, mz)));
}
else {
ld alpha = - atan2(a[0], -a[1]) / steps;
for(int ts=-steps; ts<=steps; ts++)
curvepoint(hform(hpolar(+90._deg - ts * alpha, mz)));
}
for(ld t=-1; t<=1; t += step)
curvepoint(xspinpush0(-90._deg - t * alpha, mz));
queuecurve(shiftless(Id), lc, fc1, p1);
queuereset(pmodel, p1);
fc1 = 0; p1 = PPR::CIRCLE;
}
else {
ld alpha = - atan2(a[0], -a[1]);
for(ld t=-1; t<=1; t += step)
curvepoint(xspinpush0(+90._deg - t * alpha, mz));
}
queuecurve(shiftless(d.igamma), lc, fc, p);
fc = 0; p = PPR::CIRCLE;
}
for(ld t=0; t<=360; t ++)
curvepoint(xspinpush0(t * degree, mz));
queuecurve(shiftless(Id), lc, fc, p);
if(sphere) {
for(ld t=0; t<=360; t ++)
curvepoint(xspinpush0(t * degree, M_PI-mz));
curvepoint(xspinpush0(t * degree, it ? M_PI - mz : mz));
queuecurve(shiftless(Id), lc, fc, p);
queuecurve(shiftless(Id), lc, fc1, p1);
}
}
if(sphere) {
else if(sphere) {
queuereset(mdPixel, p);
for(int i=0; i<=360; i++) {
curvepoint(point3(current_display->radius * cos(i * degree)/3, current_display->radius * sin(i * degree)/3, 0));