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factored out build_regular_spins, and fixed a crash while doing fake in 434

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Zeno Rogue 2025-06-22 19:02:05 +02:00
parent b1cb5ce8b1
commit 6a324fedfd
2 changed files with 56 additions and 45 deletions
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5
euclid.cpp
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@ -1439,6 +1439,11 @@ EX void generate() {
} }
hsh.compute_hept(); hsh.compute_hept();
if(geometry == gCubeTiling) {
cgi.loop = 4;
reg3::build_regular_spins(1, 90._deg);
}
#endif #endif
} }

96
reg3.cpp
View File

@ -195,6 +195,56 @@ EX namespace reg3 {
} }
} }
EX void build_regular_spins(ld between_centers, ld angle_between_faces) {
auto& spins = cgi.spins;
int& face = cgi.face;
if(S7 == 20) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
spins[2] = spins[1] * cspin(1, 2, -TAU/face) * spins[1];
spins[3] = spins[1] * cspin(1, 2, +TAU/face) * spins[1];
for(int a=4; a<10; a++) spins[a] = cspin(1, 2, TAU/face) * spins[a-3];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * spin180();
}
if(S7 == 12 || S7 == 8) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, TAU*(a-1)/face) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = cspin180(0, 1) * spins[a-S7/2];
if(S7 == 8) swap(spins[6], spins[7]);
if(S7 == 12) swap(spins[8], spins[11]);
if(S7 == 12) swap(spins[9], spins[10]);
}
if(S7 == 6) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
spins[2] = cspin90(1, 2) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * cspin180(0, 1);
}
if(S7 == 4) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, TAU*(a-1)/face) * spins[1];
}
cgi.adjmoves[0] = cpush(0, between_centers) * cspin180(0, 2);
for(int i=1; i<S7; i++) cgi.adjmoves[i] = spins[i] * cgi.adjmoves[0];
for(int a=0; a<S7; a++)
DEBB(DF_GEOM, ("center of ", a, " is ", kz(tC0(cgi.adjmoves[a]))));
DEBB(DF_GEOM, ("doublemove = ", kz(tC0(cgi.adjmoves[0] * cgi.adjmoves[0]))));
cgi.adjcheck = hdist(tC0(cgi.adjmoves[0]), tC0(cgi.adjmoves[1])) * 1.0001;
if(cgi.loop == 4) cgi.strafedist = cgi.adjcheck;
else cgi.strafedist = hdist(cgi.adjmoves[0] * C0, cgi.adjmoves[1] * C0);
}
EX void generate() { EX void generate() {
if(fake::in()) { if(fake::in()) {
@ -208,7 +258,6 @@ EX namespace reg3 {
int& face = cgi.face; int& face = cgi.face;
auto& spins = cgi.spins; auto& spins = cgi.spins;
auto& cellshape = hsh.faces; auto& cellshape = hsh.faces;
auto& adjcheck = cgi.adjcheck;
int& mid = cgi.schmid; int& mid = cgi.schmid;
mid = 3; mid = 3;
@ -293,38 +342,8 @@ EX namespace reg3 {
midface = normalize(midface); midface = normalize(midface);
ld between_centers = 2 * hdist0(midface); ld between_centers = 2 * hdist0(midface);
DEBB(DF_GEOM, ("between_centers = ", between_centers)); DEBB(DF_GEOM, ("between_centers = ", between_centers));
if(S7 == 20) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
spins[2] = spins[1] * cspin(1, 2, -TAU/face) * spins[1];
spins[3] = spins[1] * cspin(1, 2, +TAU/face) * spins[1];
for(int a=4; a<10; a++) spins[a] = cspin(1, 2, TAU/face) * spins[a-3];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * spin180();
}
if(S7 == 12 || S7 == 8) { build_regular_spins(between_centers, angle_between_faces);
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, TAU*(a-1)/face) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = cspin180(0, 1) * spins[a-S7/2];
if(S7 == 8) swap(spins[6], spins[7]);
if(S7 == 12) swap(spins[8], spins[11]);
if(S7 == 12) swap(spins[9], spins[10]);
}
if(S7 == 6) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
spins[2] = cspin90(1, 2) * spins[1];
for(int a=S7/2; a<S7; a++) spins[a] = spins[a-S7/2] * cspin180(0, 1);
}
if(S7 == 4) {
spins[0] = Id;
spins[1] = cspin(0, 1, angle_between_faces) * cspin180(1, 2);
for(int a=2; a<face+1; a++) spins[a] = cspin(1, 2, TAU*(a-1)/face) * spins[1];
}
cellshape.clear(); cellshape.clear();
cellshape.resize(S7); cellshape.resize(S7);
@ -333,19 +352,6 @@ EX namespace reg3 {
cellshape[a].push_back(spins[a] * cspin(1, 2, TAU*b/face) * v2); cellshape[a].push_back(spins[a] * cspin(1, 2, TAU*b/face) * v2);
} }
cgi.adjmoves[0] = cpush(0, between_centers) * cspin180(0, 2);
for(int i=1; i<S7; i++) cgi.adjmoves[i] = spins[i] * cgi.adjmoves[0];
for(int a=0; a<S7; a++)
DEBB(DF_GEOM, ("center of ", a, " is ", kz(tC0(cgi.adjmoves[a]))));
DEBB(DF_GEOM, ("doublemove = ", kz(tC0(cgi.adjmoves[0] * cgi.adjmoves[0]))));
adjcheck = hdist(tC0(cgi.adjmoves[0]), tC0(cgi.adjmoves[1])) * 1.0001;
if(loop == 4) cgi.strafedist = adjcheck;
else cgi.strafedist = hdist(cgi.adjmoves[0] * C0, cgi.adjmoves[1] * C0);
if(stretch::applicable()) { if(stretch::applicable()) {
transmatrix T = cspin90(0, 2); transmatrix T = cspin90(0, 2);
transmatrix iT = inverse(T); transmatrix iT = inverse(T);