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Code Issues Releases Wiki Activity

nisot:: nicer precision setting

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Zeno Rogue
2020-04-11 15:08:24 +02:00
parent c5d7479d00
commit e4a8b73819
11 changed files with 81 additions and 67 deletions
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46
nonisotropic.cpp
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@@ -552,7 +552,7 @@ EX namespace sn {
}
}
EX hyperpoint get_inverse_exp_symsol(hyperpoint h, bool lazy, bool just_direction) {
EX hyperpoint get_inverse_exp_symsol(hyperpoint h, flagtype flags) {
auto& s = get_tabled();
s.load();
@@ -562,18 +562,17 @@ EX namespace sn {
if(h[2] < 0.) { iz = -iz; swap(ix, iy); }
hyperpoint res = s.get(ix, iy, iz, lazy);
hyperpoint res = s.get(ix, iy, iz, flags & pfNO_INTERPOLATION);
if(h[2] < 0.) { swap(res[0], res[1]); res[2] = -res[2]; }
if(h[0] < 0.) res[0] = -res[0];
if(h[1] < 0.) res[1] = -res[1];
if(!just_direction) return table_to_azeq(res);
return res;
if(flags & pfNO_DISTANCE) return res;
return table_to_azeq(res);
}
EX hyperpoint get_inverse_exp_nsym(hyperpoint h, bool lazy, bool just_direction) {
EX hyperpoint get_inverse_exp_nsym(hyperpoint h, flagtype flags) {
auto& s = get_tabled();
s.load();
@@ -581,14 +580,13 @@ EX namespace sn {
ld iy = h[1] >= 0. ? sn::x_to_ix(h[1]) : sn::x_to_ix(-h[1]);
ld iz = sn::z_to_iz(h[2]);
hyperpoint res = s.get(ix, iy, iz, lazy);
hyperpoint res = s.get(ix, iy, iz, flags & pfNO_INTERPOLATION);
if(h[0] < 0.) res[0] = -res[0];
if(h[1] < 0.) res[1] = -res[1];
if(!just_direction) return table_to_azeq(res);
return res;
if(flags & pfNO_DISTANCE) return res;
return table_to_azeq(res);
}
EX string shader_symsol = sn::common +
@@ -745,7 +743,7 @@ EX namespace nilv {
);
}
EX hyperpoint get_inverse_exp(hyperpoint h, int iterations) {
EX hyperpoint get_inverse_exp(hyperpoint h, flagtype prec IS(pNORMAL)) {
ld wmin, wmax;
ld side = h[2] - h[0] * h[1] / 2;
@@ -769,11 +767,13 @@ EX namespace nilv {
ld s = sin(2 * alpha_total);
int max_iter = (prec & pfLOW_BS_ITER) ? 5 : 20;
for(int it=0;; it++) {
ld w = (wmin + wmax) / 2;
ld z = b * b * (s + (sin(w) - w)/(cos(w) - 1)) + w;
if(it == iterations) {
if(it == max_iter) {
ld alpha = alpha_total - w/2;
ld c = b / sin(w/2);
return point3(c * w * cos(alpha), c * w * sin(alpha), w);
@@ -967,7 +967,7 @@ EX namespace nilv {
EX hyperpoint on_geodesic(hyperpoint s0, hyperpoint s1, ld x) {
hyperpoint local = inverse(nisot::translate(s0)) * s1;
hyperpoint h = get_inverse_exp(local, 100);
hyperpoint h = get_inverse_exp(local);
return nisot::translate(s0) * formula_exp(h * x);
}
@@ -1822,7 +1822,7 @@ EX namespace rots {
hybrid::in_underlying_geometry([&] {
hyperpoint h = tC0(T);
Spin = inverse(gpushxto0(h) * T);
d = hr::inverse_exp(h, iTable);
d = hr::inverse_exp(h);
alpha = atan2(Spin[0][1], Spin[0][0]);
distance = hdist0(h);
beta = atan2(h[1], h[0]);
@@ -1986,11 +1986,14 @@ EX namespace nisot {
vel += (acc1+2*acc2+2*acc3+acc4)/6;
}
EX hyperpoint numerical_exp(hyperpoint v, int steps) {
EX int rk_steps = 20;
EX int pt_steps = 100;
EX hyperpoint numerical_exp(hyperpoint v) {
hyperpoint at = point31(0, 0, 0);
v /= steps;
v /= rk_steps;
v[3] = 0;
for(int i=0; i<steps; i++) geodesic_step(at, v);
for(int i=0; i<rk_steps; i++) geodesic_step(at, v);
return at;
}
@@ -2045,12 +2048,12 @@ EX namespace nisot {
return parallel_transport_bare(P, direction);
}
EX transmatrix spin_towards(const transmatrix Position, const hyperpoint goal) {
EX transmatrix spin_towards(const transmatrix Position, const hyperpoint goal, flagtype prec IS(pNORMAL)) {
hyperpoint at = tC0(Position);
transmatrix push_back = inverse(translate(at));
hyperpoint back_goal = push_back * goal;
back_goal = inverse_exp(back_goal, iTable);
back_goal = inverse_exp(back_goal, prec);
transmatrix back_Position = push_back * Position;
@@ -2133,6 +2136,11 @@ EX namespace nisot {
shift_arg_formula(nilv::nilwidth);
return 0;
}
else if(argis("-rk-steps")) {
PHASEFROM(2);
shift(); rk_steps = argi();
return 0;
}
else if(argis("-nilv")) {
PHASEFROM(2);
if(nil) stop_game();