mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-12-21 08:00:25 +00:00
1212 lines
36 KiB
C++
1212 lines
36 KiB
C++
namespace hr {
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namespace arcm {
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#define SDEBUG(x) if(debug_geometry) { doindent(); x; fflush(stdout); }
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static const int sfPH = 1;
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static const int sfLINE = 2;
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static const int sfCHESS = 4;
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static const int sfTHREE = 8;
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static const int sfSEMILINE = 16;
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archimedean_tiling current;
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// id of vertex in the archimedean tiling
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// odd numbers = reflected tiles
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// 0, 2, ..., 2(N-1) = as in the symbol
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// 2N = bitruncated tile
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short& id_of(heptagon *h) {
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return h->zebraval;
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}
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// which index in id_of's neighbor list does h->move[0] have
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short& parent_index_of(heptagon *h) {
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return h->emeraldval;
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}
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// total number of neighbors
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int neighbors_of(heptagon *h) {
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return isize(current.triangles[id_of(h)]);
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}
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int gcd(int x, int y) { return x ? gcd(y%x, x) : y < 0 ? -y : y; }
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void archimedean_tiling::make_match(int a, int i, int b, int j) {
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if(isize(adjacent[a]) != isize(adjacent[b])) {
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SDEBUG(printf("(error here)"));
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errormsg = XLAT("polygons match incorrectly");
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errors++;
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}
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if(matches[a][b] == -1)
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matches[a][b] = j - i, matches[b][a] = i - j;
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else
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periods[a] = periods[b] = gcd(matches[a][b] - (j-i), periods[a]);
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}
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void archimedean_tiling::prepare() {
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euclidean_angle_sum = 0;
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for(int f: faces) euclidean_angle_sum += (f-2.) / f;
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for(int i: faces) if(i > MAX_EDGE) {
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errormsg = XLAT("currently no more than %1 edges", its(MAX_EDGE));
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errors++;
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return;
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}
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if(isize(faces) > MAX_EDGE/2) {
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errormsg = XLAT("currently no more than %1 faces in vertex", its(MAX_EDGE));
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errors++;
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return;
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}
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if(isize(faces) < 2) {
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errormsg = XLAT("not enough faces");
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errors++;
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return;
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}
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for(int i: faces) if(i < 2) {
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errormsg = XLAT("not enough edges");
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errors++;
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return;
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}
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real_faces = 0, real_face_type = 0;
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for(int i=0; i<N; i++) if(faces[i] > 2) real_faces++, real_face_type += faces[i];
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real_face_type /= 2;
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if(real_faces) {
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for(int i=1; i<isize(faces); i++) if(faces[i] == 2 && faces[i-1] == 2) {
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errormsg = XLAT("Not implemented.");
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errors++;
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return;
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}
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if(faces[0] == 2 && faces[isize(faces)-1] == 2) {
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errormsg = XLAT("Not implemented.");
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errors++;
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return;
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}
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}
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if(real_faces == 2) {
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for(int i: faces) if(i != real_face_type) {
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errormsg = XLAT("polygons match incorrectly");
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errors++;
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}
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}
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errors = 0;
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/* build the 'adjacent' table */
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N = isize(faces);
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int M = 2 * N + 2;
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adjacent.clear();
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adjacent.resize(M);
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have_symmetry = false;
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for(int i=0; i<N; i++) if(invert[i]) have_symmetry = true;
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for(int i=0; i<M; i++) for(int j=0; j<M; j++) matches[i][j] = i==j ? 0 : -1;
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for(int i=0; i<M; i++) periods[i] = i<2*N ? faces[i/2] : N;
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for(int i=0; i<N; i++) {
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for(int oi=0; oi<1; oi++) {
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int at = (i+oi)%N;
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int inv = oi;
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SDEBUG(printf("vertex ");)
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for(int z=0; z<faces[i]; z++) {
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SDEBUG(printf("[%d %d] " , at, inv);)
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adjacent[2*i+oi].emplace_back(2*N+int(inv), inv ? (2*at+2*N-2) % (2*N) : 2*at);
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if(invert[at]) inv ^= 1;
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at = adj[at];
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if(inv) at = (at+1) % N;
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else at = (at+N-1) % N;
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}
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if(!inv) make_match(2*i, 0, inv ? (2*at+2*N-1) % 2*N : 2*at, 0);
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SDEBUG(printf("-> [%d %d]\n", at, inv);)
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}
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}
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for(int i=0; i<N; i++) {
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adjacent[2*N].emplace_back(2*i, 0);
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int ai = (i+1) % N;
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adjacent[2*N].emplace_back(2*N+int(invert[ai]), (2*adj[ai]+2*N-1) % (2*N));
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}
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for(int d=0; d<=2*N; d+=2) {
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int s = isize(adjacent[d]);
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for(int i=0; i<s; i++) {
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auto& orig = adjacent[d][s-1-i];
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adjacent[d+1].emplace_back(orig.first ^ 1, orig.second);
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}
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}
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for(int d=0; d<M; d++) {
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int s = isize(adjacent[d]);
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for(int i=0; i<s; i++) {
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auto& orig = adjacent[d][i];
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if(orig.first & 1) orig.second = isize(adjacent[orig.first]) - 1 - orig.second;
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}
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}
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SDEBUG(
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for(int i=0; i<M; i++) {
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printf("adjacent %2d:", i);
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for(int j=0; j<isize(adjacent[i]); j++) {
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auto p = adjacent[i][j];
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printf(" (%d,%d)", p.first, p.second);
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}
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printf("\n");
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} )
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for(int i=0; i<M; i++) {
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for(int j=0; j<isize(adjacent[i]); j++) {
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auto p = adjacent[i][j];
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auto q = adjacent[p.first][p.second];
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make_match(i, j, q.first, q.second);
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}
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}
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/* verify all the triangles */
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for(int i=0; i<M; i++) {
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for(int j=0; j<isize(adjacent[i]); j++) {
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int ai = i, aj = j;
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SDEBUG( printf("triangle "); )
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for(int s=0; s<3; s++) {
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SDEBUG( printf("[%d %d] ", ai, aj); fflush(stdout); )
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tie(ai, aj) = adjacent[ai][aj];
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aj++; if(aj >= isize(adjacent[ai])) aj = 0;
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}
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SDEBUG( printf("-> [%d %d]\n", ai, aj); )
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make_match(i, j, ai, aj);
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}
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}
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for(int i=0; i<2*N; i++) {
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for(int j=0; j<isize(adjacent[i]); j++) {
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auto aa = make_pair(i, j);
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aa = get_adj(aa, 1);
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aa = get_adj(aa, 2);
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aa = get_adj(aa, 1);
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aa = get_adj(aa, 2);
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make_match(i, j, aa.first, aa.second);
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}
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}
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regroup();
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}
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void archimedean_tiling::regroup() {
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int M = 2 * N + 2;
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for(int i=0; i<M; i++) for(int j=0; j<M; j++) if(matches[i][j] != -1)
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for(int l=0; l<M; l++) for(int k=0; k<M; k++) if(matches[j][k] != -1) {
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make_match(i, 0, k, matches[i][j] + matches[j][k]);
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make_match(i, 0, k, matches[i][j] + matches[j][k] + gcd(periods[i], periods[j]));
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}
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for(int i=0; i<M; i++) tilegroup[i] = -1;
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tilegroups = 0;
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for(int i=0; i<M; i+=(have_symmetry?1:2)) if(tilegroup[i] == -1) {
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if(periods[i] < 0) periods[i] = -periods[i];
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for(int j=0; j<M; j++) if(matches[i][j] != -1)
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tilegroup[j] = tilegroups, groupoffset[j] = matches[i][j] % periods[i];
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tilegroups++;
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}
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flags.clear();
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flags.resize(M);
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for(int i=0; i<M; i++)
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for(int j=0; j<M; j++) {
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if(tilegroup[i] == tilegroup[j]) {
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flags[i] |= nflags[j/2];
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if(j%2 == 1 && (nflags[j/2] & sfSEMILINE))
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flags[i] |= sfLINE;
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}
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}
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if(!have_ph) {
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for(int i=0; i<M; i++) if(tilegroup[i] == 0) flags[i] |= sfPH;
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}
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SDEBUG( for(int i=0; i<M; i+=(have_symmetry?1:2)) {
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printf("tiling group of %2d: [%2d]%2d+Z%2d\n", i, tilegroup[i], groupoffset[i], periods[i]);
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printf("\n");
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} )
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}
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eGeometryClass archimedean_tiling::get_class() {
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if(euclidean_angle_sum < 1.999999) return gcSphere;
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else if(euclidean_angle_sum > 2.000001) return gcHyperbolic;
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else return gcEuclid;
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}
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void archimedean_tiling::compute_geometry() {
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ginf[gArchimedean].cclass = get_class();
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SDEBUG( printf("euclidean_angle_sum = %f\n", float(euclidean_angle_sum)); )
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dynamicval<eGeometry> dv(geometry, gArchimedean);
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/* compute the geometry */
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inradius.resize(N);
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circumradius.resize(N);
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alphas.resize(N);
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ld elmin = 0, elmax = hyperbolic ? 10 : sphere ? M_PI : 1;
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if(real_faces == 2) {
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/* standard methods fail for dihedra, but the answer is easy */
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edgelength = 2 * M_PI / faces[0];
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for(int i=0; i<N; i++)
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if(faces[i] == 2)
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alphas[i] = 0,
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circumradius[i] = M_PI / real_face_type,
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inradius[i] = 0;
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else
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alphas[i] = M_PI/2,
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circumradius[i] = inradius[i] = M_PI/2;
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}
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else if(real_faces == 0) {
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// these are called hosohedra
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edgelength = M_PI;
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for(int i=0; i<N; i++)
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alphas[i] = M_PI / N,
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circumradius[i] = M_PI/2,
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inradius[i] = 0;
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}
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else for(int p=0; p<100; p++) {
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edgelength = (elmin + elmax) / 2;
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ld alpha_total = 0;
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for(int i=0; i<N; i++) {
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ld crmin = 0, crmax = sphere ? M_PI/2 : 10;
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ld el = 0;
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for(int q=0; q<100; q++) {
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circumradius[i] = (crmin + crmax) / 2;
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hyperpoint p1 = xpush0(circumradius[i]);
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hyperpoint p2 = spin(2 * M_PI / faces[i]) * p1;
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inradius[i] = hdist0(mid(p1, p2));
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el = hdist(p1, p2);
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if(el > edgelength) crmax = circumradius[i];
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else crmin = circumradius[i];
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}
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if(el < edgelength - 1e-3) alpha_total += 100; // could not make an edge that long
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hyperpoint h = xpush(edgelength/2) * xspinpush0(M_PI/2, inradius[i]);
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ld a = atan2(-h[1], h[0]);
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if(a < 0) a += 2 * M_PI;
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alphas[i] = a;
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// printf(" H = %s alp = %f\n", display(h), (float) atan2(-h[1], h[0]));
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alpha_total += alphas[i];
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}
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// printf("el = %f alpha = %f\n", float(edgelength), float(alpha_total));
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if(sphere ^ (alpha_total > M_PI)) elmin = edgelength;
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else elmax = edgelength;
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if(euclid) break;
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}
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SDEBUG( printf("computed edgelength = %f\n", float(edgelength)); )
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triangles.clear();
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triangles.resize(2*N+2);
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for(int i=0; i<N; i++) for(int j=0; j<2; j++)
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for(int k=0; k<faces[i]; k++)
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triangles[2*i+j].emplace_back(2*M_PI/faces[i], circumradius[i]);
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for(int k=0; k<N; k++) {
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triangles[2*N].emplace_back(alphas[k], circumradius[k]);
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triangles[2*N].emplace_back(alphas[(k+1)%N], edgelength);
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triangles[2*N+1].emplace_back(alphas[N-1-k], edgelength);
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triangles[2*N+1].emplace_back(alphas[N-1-k], circumradius[N-1-k]);
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}
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for(auto& ts: triangles) {
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ld total = 0;
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for(auto& t: ts) tie(t.first, total) = make_pair(total, total + t.first);
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// printf("total = %lf\n", double(total));
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}
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SDEBUG( for(auto& ts: triangles) {
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printf("T");
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for(auto& t: ts) printf(" %f@%f", float(t.first), float(t.second));
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printf("\n");
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} )
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}
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ld archimedean_tiling::scale() {
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if(real_faces == 0 && N == 2) return M_PI / 2;
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if(real_faces == 2) return M_PI / 2;
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if(real_faces == 0) return 2 * M_PI / N;
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return edgelength;
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}
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map<heptagon*, vector<pair<heptagon*, transmatrix> > > altmap;
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map<heptagon*, pair<heptagon*, transmatrix>> archimedean_gmatrix;
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hrmap *current_altmap;
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heptagon *build_child(heptspin p, pair<int, int> adj);
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struct hrmap_archimedean : hrmap {
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heptagon *origin;
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heptagon *getOrigin() { return origin; }
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hrmap_archimedean() {
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int id = DUAL ? current.N * 2 : 0;;
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int N0 = isize(current.adjacent[id]);
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origin = tailored_alloc<heptagon> (N0);
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origin->s = hsOrigin;
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origin->emeraldval = 0;
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origin->zebraval = 0;
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origin->fiftyval = 0;
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origin->fieldval = 0;
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origin->rval0 = origin->rval1 = 0;
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origin->cdata = NULL;
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origin->alt = NULL;
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origin->distance = 0;
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parent_index_of(origin) = DUAL ? 1 : 0;
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id_of(origin) = id;
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origin->c7 = newCell(N0/DUALMUL, origin);
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heptagon *alt = NULL;
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if(hyperbolic) {
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dynamicval<eGeometry> g(geometry, gNormal);
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alt = tailored_alloc<heptagon> (S7);
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alt->s = hsOrigin;
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alt->emeraldval = 0;
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alt->zebraval = 0;
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alt->distance = 0;
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alt->c7 = NULL;
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alt->alt = alt;
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alt->cdata = NULL;
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current_altmap = newAltMap(alt);
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}
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transmatrix T = xpush(.01241) * spin(1.4117) * xpush(0.1241) * Id;
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archimedean_gmatrix[origin] = make_pair(alt, T);
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altmap[alt].emplace_back(origin, T);
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if(current.real_faces == 0 && DUAL) {
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heptspin hs(origin, 0);
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heptagon *hnew = build_child(hs, current.get_adj(hs));
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for(int s=1; s<2*current.N; s++)
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origin->c.connect(s, hnew, s, false);
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}
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else if(current.real_faces == 0) {
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create_adjacent(origin, 0);
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heptagon *o0 = origin->move(0);
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create_adjacent(origin, 1);
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heptagon *o1 = origin->move(1);
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for(int s=1; s<2*current.N; s+=2)
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o0->c.connect(s, o1, 2*current.N-s, false);
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for(int s=2; s<2*current.N; s+=2) {
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heptspin hs(o0, s);
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heptagon *hnew = build_child(hs, current.get_adj(hs));
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// no need to specify archimedean_gmatrix and altmap
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hnew->c.connect(1, heptspin(o1, 2*current.N-s));
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}
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o1->c.connect(1, o0, 2*current.N-1, false);
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}
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else if(origin->degree() == 2) {
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create_adjacent(origin, 0);
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create_adjacent(origin, 1);
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origin->move(0)->c.connect(1, origin->move(1), 2*current.N-1, false);
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origin->move(1)->c.connect(1, origin->move(0), 2*current.N-1, false);
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}
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base_distlimit = 0;
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celllister cl(origin->c7, 1000, 200, NULL);
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base_distlimit = cl.dists.back();
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if(sphere) base_distlimit = SEE_ALL;
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}
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~hrmap_archimedean() {
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clearfrom(origin);
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altmap.clear();
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archimedean_gmatrix.clear();
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if(current_altmap) {
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dynamicval<eGeometry> g(geometry, gNormal);
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delete current_altmap;
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current_altmap = NULL;
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}
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}
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void verify() { }
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};
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hrmap *new_map() { return new hrmap_archimedean; }
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transmatrix adjcell_matrix(heptagon *h, int d);
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heptagon *build_child(heptspin p, pair<int, int> adj) {
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indenter ind;
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auto h = buildHeptagon1(tailored_alloc<heptagon> (isize(current.adjacent[adj.first])), p.at, p.spin, hstate(1), 0);
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SDEBUG( printf("NEW %p.%d ~ %p.0\n", p.at, p.spin, h); )
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id_of(h) = adj.first;
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parent_index_of(h) = adj.second;
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int nei = neighbors_of(h);
|
|
h->c7 = newCell(nei/DUALMUL, h);
|
|
h->distance = p.at->distance + 1;
|
|
if(adj.first < 2*current.N && !DUAL) {
|
|
int s = 0;
|
|
heptspin hs(p);
|
|
while(id_of(hs.at->move(0)) >= 2 * current.N) {
|
|
s += hs.spin / 2 - 1;
|
|
hs = hs - hs.spin + wstep - 1;
|
|
}
|
|
h->fieldval = hs.at->move(0)->fieldval + s + hs.spin/2;
|
|
}
|
|
else
|
|
h->fieldval = -100;
|
|
h->fiftyval = isize(archimedean_gmatrix);
|
|
if(p.at->s == hsOrigin)
|
|
h->rval1 = 1 + (p.spin % 2);
|
|
else {
|
|
if(p.spin % 2 == 0)
|
|
h->rval1 = p.at->move(0)->rval1;
|
|
else
|
|
h->rval1 = 3 - p.at->move(0)->rval1 - p.at->rval1;
|
|
}
|
|
h->rval0 = hrand(256);
|
|
heptspin hs(h, 0);
|
|
return h;
|
|
}
|
|
|
|
bool skip_digons(heptspin hs, int step) {
|
|
return
|
|
isize(current.adjacent[current.get_adj(hs).first]) == 2 ||
|
|
isize(current.adjacent[current.get_adj(hs+step).first]) == 2;
|
|
}
|
|
|
|
void connect_digons_too(heptspin h1, heptspin h2) {
|
|
if(skip_digons(h1, -1)) {
|
|
h1--, h2++;
|
|
heptagon *hnew = build_child(h1, current.get_adj(h1));
|
|
// no need to specify archimedean_gmatrix and altmap
|
|
hnew->c.connect(1, h2);
|
|
h1--, h2++;
|
|
SDEBUG( printf("OL2 %p.%d ~ %p.%d\n", h1.at, h1.spin, h2.at, h2.spin); )
|
|
h1.at->c.connect(h1.spin, h2);
|
|
}
|
|
}
|
|
|
|
void connectHeptagons(heptspin hi, heptspin hs) {
|
|
SDEBUG( printf("OLD %p.%d ~ %p.%d\n", hi.at, hi.spin, hs.at, hs.spin); )
|
|
if(hi.at->move(hi.spin) == hs.at && hi.at->c.spin(hi.spin) == hs.spin) {
|
|
SDEBUG( printf("WARNING: already connected\n"); )
|
|
return;
|
|
}
|
|
if(hi.peek()) {
|
|
SDEBUG( printf("ERROR: already connected left\n"); )
|
|
exit(1);
|
|
}
|
|
if(hs.peek()) {
|
|
SDEBUG( printf("ERROR: already connected right\n"); )
|
|
exit(1);
|
|
}
|
|
hi.at->c.connect(hi.spin, hs);
|
|
|
|
auto p = current.get_adj(hi);
|
|
if(current.tilegroup[p.first] != current.tilegroup[id_of(hs.at)]) {
|
|
printf("should merge %d %d\n", p.first, id_of(hs.at));
|
|
current.make_match(p.first, p.second, id_of(hs.at), hs.spin + parent_index_of(hs.at));
|
|
current.regroup();
|
|
}
|
|
// heptagon *hnew = build_child(h, d, get_adj(h, d).first, get_adj(h, d).second);
|
|
}
|
|
|
|
// T and X are supposed to be equal -- move T so that it is closer to X
|
|
void fixup_matrix(transmatrix& T, const transmatrix& X, ld step) {
|
|
for(int i=0; i<3; i++)
|
|
for(int j=0; j<3; j++)
|
|
T[i][j] = (T[i][j] * (1-step) + X[i][j] * step);
|
|
|
|
/*
|
|
for(int i=0; i<3; i++)
|
|
for(int j=0; j<3; j++)
|
|
if(T[i][j] - X[i][j] > 1e-3) exit(1);
|
|
*/
|
|
fixmatrix(T);
|
|
}
|
|
|
|
void create_adjacent(heptagon *h, int d) {
|
|
|
|
SDEBUG( printf("%p.%d ~ ?\n", h, d); )
|
|
|
|
heptspin hi(h, d);
|
|
|
|
while(skip_digons(hi, 1)) hi++;
|
|
|
|
auto& t1 = current.get_triangle(hi);
|
|
|
|
// * spin(-tri[id][pi+i].first) * xpush(t.second) * pispin * spin(tri[id'][p'+d'].first)
|
|
|
|
auto& p1 = archimedean_gmatrix[h];
|
|
|
|
heptagon *alt = p1.first;
|
|
|
|
transmatrix T = p1.second * spin(-t1.first) * xpush(t1.second);
|
|
transmatrix U = Id;
|
|
|
|
if(hyperbolic) {
|
|
dynamicval<eGeometry> g(geometry, gNormal);
|
|
U = T;
|
|
virtualRebaseSimple(alt, T);
|
|
U = U * inverse(T);
|
|
}
|
|
|
|
if(euclid)
|
|
alt = encodeId(pair_to_vec(int(T[0][2]), int(T[1][2])));
|
|
|
|
SDEBUG( printf("look for: %p / %s\n", alt, display(T * C0)); )
|
|
|
|
for(auto& p2: altmap[alt]) if(intval(p2.second * C0, T * C0) < 1e-4) {
|
|
SDEBUG( printf("cell found: %p\n", p2.first); )
|
|
for(int d2=0; d2<p2.first->degree(); d2++) {
|
|
heptspin hs(p2.first, d2);
|
|
auto& t2 = current.get_triangle(p2.first, d2);
|
|
transmatrix T1 = T * spin(M_PI + t2.first);
|
|
SDEBUG( printf("compare: %s", display(T1 * xpush0(1))); )
|
|
SDEBUG( printf(":: %s\n", display(p2.second * xpush0(1))); )
|
|
if(intval(T1 * xpush0(1), p2.second * xpush0(1)) < 1e-4) {
|
|
|
|
// T1 = p2.second
|
|
// T * spin(pi+t2.first) == p2.second
|
|
// p1.second * spinm(-t1.first) * xpush(t1.second) * spin(pi+t2.first) == p2.second
|
|
|
|
// bring p1 and p2 closer, to prevent floating point errors
|
|
if(hyperbolic) {
|
|
fixup_matrix(p1.second, U * p2.second * spin(-M_PI - t2.first) * xpush(-t1.second) * spin(t1.first), 0.25);
|
|
fixup_matrix(p2.second, T1, 0.25);
|
|
}
|
|
|
|
while(skip_digons(hs, -1)) hs--;
|
|
connectHeptagons(hi, hs);
|
|
connect_digons_too(hi, hs);
|
|
return;
|
|
}
|
|
}
|
|
SDEBUG( printf("but rotation not found\n"));
|
|
}
|
|
|
|
auto& t2 = current.get_triangle(current.get_adj(hi));
|
|
transmatrix T1 = T * spin(M_PI + t2.first);
|
|
fixmatrix(T1);
|
|
|
|
heptagon *hnew = build_child(hi, current.get_adj(hi));
|
|
altmap[alt].emplace_back(hnew, T1);
|
|
archimedean_gmatrix[hnew] = make_pair(alt, T1);
|
|
connect_digons_too(hi, heptspin(hnew, 0));
|
|
}
|
|
|
|
pair<ld, ld>& archimedean_tiling::get_triangle(heptagon *h, int cid) {
|
|
return triangles[id_of(h)][(parent_index_of(h) + cid + MODFIXER) % neighbors_of(h)];
|
|
}
|
|
|
|
pair<int, int>& archimedean_tiling::get_adj(heptagon *h, int cid) {
|
|
return adjacent[id_of(h)][(parent_index_of(h) + cid + MODFIXER) % neighbors_of(h)];
|
|
}
|
|
|
|
pair<int, int>& archimedean_tiling::get_adj(const pair<int, int>& p, int delta) {
|
|
return adjacent[p.first][(p.second + delta + MODFIXER) % isize(adjacent[p.first])];
|
|
}
|
|
|
|
pair<ld, ld>& archimedean_tiling::get_triangle(const pair<int, int>& p, int delta) {
|
|
return triangles[p.first][(p.second + delta + MODFIXER) % isize(adjacent[p.first])];
|
|
}
|
|
|
|
transmatrix adjcell_matrix(heptagon *h, int d) {
|
|
auto& t1 = current.get_triangle(h, d);
|
|
|
|
heptagon *h2 = h->move(d);
|
|
|
|
int d2 = h->c.spin(d);
|
|
auto& t2 = current.get_triangle(h2, d2);
|
|
|
|
return spin(-t1.first) * xpush(t1.second) * spin(M_PI + t2.first);
|
|
}
|
|
|
|
void draw() {
|
|
dq::visited.clear();
|
|
dq::enqueue(viewctr.at, cview());
|
|
|
|
while(!dq::drawqueue.empty()) {
|
|
auto& p = dq::drawqueue.front();
|
|
heptagon *h = get<0>(p);
|
|
transmatrix V = get<1>(p);
|
|
dynamicval<ld> b(band_shift, get<2>(p));
|
|
dq::drawqueue.pop();
|
|
|
|
int id = id_of(h);
|
|
int S = isize(current.triangles[id]);
|
|
|
|
if(id < 2*current.N ? !DUAL : !PURE) {
|
|
if(!do_draw(h->c7, V)) continue;
|
|
drawcell(h->c7, V, 0, false);
|
|
}
|
|
|
|
for(int i=0; i<S; i++) {
|
|
if(DUAL && (i&1)) continue;
|
|
h->cmove(i);
|
|
if(PURE && id >= 2*current.N && h->move(i) && id_of(h->move(i)) >= 2*current.N) continue;
|
|
transmatrix V1 = V * adjcell_matrix(h, i);
|
|
bandfixer bf(V1);
|
|
dq::enqueue(h->move(i), V1);
|
|
}
|
|
}
|
|
}
|
|
|
|
transmatrix relative_matrix(heptagon *h2, heptagon *h1) {
|
|
if(gmatrix0.count(h2->c7) && gmatrix0.count(h1->c7))
|
|
return inverse(gmatrix0[h1->c7]) * gmatrix0[h2->c7];
|
|
transmatrix gm = Id, where = Id;
|
|
while(h1 != h2) {
|
|
for(int i=0; i<neighbors_of(h1); i++) {
|
|
if(h1->move(i) == h2) {
|
|
return gm * adjcell_matrix(h1, i) * where;
|
|
}
|
|
}
|
|
if(h1->distance > h2->distance) {
|
|
gm = gm * adjcell_matrix(h1, 0);
|
|
h1 = h1->move(0);
|
|
}
|
|
else {
|
|
where = inverse(adjcell_matrix(h2, 0)) * where;
|
|
h2 = h2->move(0);
|
|
}
|
|
}
|
|
return gm * where;
|
|
}
|
|
|
|
int fix(heptagon *h, int spin) {
|
|
int type = isize(current.adjacent[id_of(h)]);
|
|
spin %= type;
|
|
if(spin < 0) spin += type;
|
|
return spin;
|
|
}
|
|
|
|
void archimedean_tiling::parse() {
|
|
int at = 0;
|
|
|
|
auto peek = [&] () { if(at == isize(symbol)) return char(0); else return symbol[at]; };
|
|
auto is_number = [&] () { char p = peek(); return p >= '0' && p <= '9'; };
|
|
auto read_number = [&] () { int result = 0; while(is_number()) result = 10 * result + peek() - '0', at++; return result; };
|
|
|
|
faces.clear(); nflags.clear();
|
|
have_line = false;
|
|
have_ph = false;
|
|
int nflags0;
|
|
auto nfback = [this, &nflags0] () -> int& { if(nflags.empty()) return nflags0; else return nflags.back(); };
|
|
while(true) {
|
|
if(peek() == ')' || (peek() == '(' && isize(faces)) || peek() == 0) break;
|
|
else if((peek() == 'L') && faces.size()) {
|
|
if(!nflags.empty()) nfback() |= sfLINE;
|
|
have_line = true, at++;
|
|
}
|
|
else if((peek() == 'l') && faces.size()) {
|
|
if(!nflags.empty()) nfback() |= sfSEMILINE;
|
|
have_line = true, at++;
|
|
}
|
|
else if((peek() == 'H' || peek() == 'h') && faces.size()) {
|
|
if(!nflags.empty()) nfback() |= sfPH;
|
|
have_ph = true, at++;
|
|
}
|
|
else if(is_number()) faces.push_back(read_number()), nflags.push_back(0);
|
|
else if(peek() == '^' && !faces.empty()) {
|
|
at++;
|
|
int rep = read_number();
|
|
if(rep == 0) nflags.pop_back(), faces.pop_back();
|
|
for(int i=1; i<rep; i++) nflags.push_back(nfback()), faces.push_back(faces.back());
|
|
}
|
|
else at++;
|
|
}
|
|
nflags.push_back(nflags0);
|
|
repetition = 1;
|
|
N = isize(faces);
|
|
invert.clear(); invert.resize(N, true);
|
|
adj.clear(); adj.resize(N, 0); for(int i=0; i<N; i++) adj[i] = i;
|
|
while(peek() != 0) {
|
|
if(peek() == '^') at++, repetition = read_number();
|
|
else if(peek() == '(') {
|
|
at++; int a = read_number(); while(!is_number() && !among(peek(), '(', '[', ')',']', 0)) at++;
|
|
if(is_number()) { int b = read_number(); adj[a] = b; adj[b] = a; invert[a] = invert[b] = false; }
|
|
else { invert[a] = false; }
|
|
}
|
|
else if(peek() == '[') {
|
|
at++; int a = read_number(); while(!is_number() && !among(peek(), '(', '[', ')',']', 0)) at++;
|
|
if(is_number()) { int b = read_number(); adj[a] = b; adj[b] = a; invert[a] = invert[b] = true; }
|
|
else { invert[a] = true; }
|
|
}
|
|
else at++;
|
|
}
|
|
for(int i=0; i<N * (repetition-1); i++)
|
|
faces.push_back(faces[i]),
|
|
nflags.push_back(nflags[i]),
|
|
invert.push_back(invert[i]),
|
|
adj.push_back(adj[i] + N);
|
|
N *= repetition;
|
|
prepare();
|
|
}
|
|
|
|
#if CAP_COMMANDLINE
|
|
void show();
|
|
|
|
int readArgs() {
|
|
using namespace arg;
|
|
|
|
if(0) ;
|
|
else if(argis("-symbol")) {
|
|
PHASEFROM(2);
|
|
archimedean_tiling at;
|
|
shift(); at.parse(args());
|
|
if(at.errors) {
|
|
printf("error: %s\n", at.errormsg.c_str());
|
|
}
|
|
else {
|
|
set_geometry(gArchimedean);
|
|
need_reset_geometry = true;
|
|
current = at;
|
|
showstartmenu = false;
|
|
}
|
|
}
|
|
else if(argis("-dgeom")) debug_geometry = true;
|
|
else if(argis("-dual")) { PHASEFROM(2); set_variation(eVariation::dual); }
|
|
else if(argis("-d:arcm"))
|
|
launch_dialog(show);
|
|
else return 1;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if CAP_COMMANDLINE
|
|
auto hook =
|
|
addHook(hooks_args, 100, readArgs);
|
|
#endif
|
|
|
|
int archimedean_tiling::support_threecolor() {
|
|
return (isize(faces) == 3 && invert[0] && invert[1] && invert[2] && faces[0] % 2 == 0 && faces[1] % 2 == 0 && faces[2] % 2 == 0) ? 2 :
|
|
tilegroup[N*2] > 1 ? 1 :
|
|
0;
|
|
return 2;
|
|
}
|
|
|
|
int archimedean_tiling::support_threecolor_bitruncated() {
|
|
for(int i: faces) if(i % 2) return 0;
|
|
return 2;
|
|
}
|
|
|
|
int archimedean_tiling::support_football() {
|
|
return
|
|
have_ph ? 1 :
|
|
(isize(faces) == 3 && invert[0] && invert[1] && invert[2] && faces[1] % 2 == 0 && faces[2] % 2 == 0) ? 2 :
|
|
0;
|
|
}
|
|
|
|
bool archimedean_tiling::support_chessboard() {
|
|
return N % 2 == 0;
|
|
}
|
|
|
|
bool pseudohept(cell *c) {
|
|
if(DUAL)
|
|
return !(c->master->rval0 & 3);
|
|
int id = id_of(c->master);
|
|
if(PURE)
|
|
return current.flags[id] & arcm::sfPH;
|
|
if(BITRUNCATED)
|
|
return id < current.N * 2;
|
|
return false;
|
|
}
|
|
|
|
bool chessvalue(cell *c) {
|
|
if(DUAL)
|
|
return c->master->rval1 - 1;
|
|
return c->master->fieldval & 1;
|
|
}
|
|
|
|
bool linespattern(cell *c) {
|
|
return current.flags[id_of(c->master)] & arcm::sfLINE;
|
|
}
|
|
|
|
int threecolor(cell *c) {
|
|
if(current.have_ph)
|
|
return !arcm::pseudohept(c);
|
|
else if(PURE)
|
|
return current.tilegroup[id_of(c->master)];
|
|
else {
|
|
int id = id_of(c->master);
|
|
if(current.support_threecolor() == 2) return id < current.N * 2 ? (id&1) : 2;
|
|
return current.tilegroup[id];
|
|
}
|
|
}
|
|
|
|
int cEucRegular = 0x008000;
|
|
int cEucSemiregular = 0x40C040;
|
|
int cPlatonic = 0x000080;
|
|
int cArchimedean = 0x4040C0;
|
|
int cPrism = 0x40A0A0;
|
|
int cAntiPrism = 0x80A0A0;
|
|
int cHyperRegular = 0x800000;
|
|
int cHyperSemi = 0xC04040;
|
|
|
|
int cWeird = 0xA000A0;
|
|
|
|
vector<pair<string, int> > samples = {
|
|
/* Euclidean */
|
|
{"(3,3,3,3,3,3)", cEucRegular},
|
|
{"(4,4,4,4)", cEucRegular},
|
|
{"(6,6,6)", cEucRegular},
|
|
{"(8,8,4)", cEucSemiregular},
|
|
{"(4,6,12)", cEucSemiregular},
|
|
{"(6,4,3,4)", cEucSemiregular},
|
|
{"(3,6,3,6)", cEucSemiregular},
|
|
{"(3,12,12)", cEucSemiregular},
|
|
{"(4,4,3L,3L,3L) [3,4]", cEucSemiregular},
|
|
{"(3,3,3,3,6) (1,2)(0,4)(3)", cEucSemiregular},
|
|
{"(3,3,4,3,4) (0,4)(1)(2,3)", cEucSemiregular},
|
|
|
|
/* Platonic */
|
|
{"(3,3,3)", cPlatonic},
|
|
{"(3,3,3,3)", cPlatonic},
|
|
{"(3,3,3,3,3)", cPlatonic},
|
|
{"(4,4,4)", cPlatonic},
|
|
{"(5,5,5)", cPlatonic},
|
|
|
|
/* Archimedean solids */
|
|
{"(3,6,6)", cArchimedean},
|
|
{"(3,4,3,4)", cArchimedean},
|
|
{"(3,8,8)", cArchimedean},
|
|
{"(4,6,6)", cArchimedean},
|
|
{"(3,4,4,4)", cArchimedean},
|
|
{"(4,6,8)", cArchimedean},
|
|
{"(3,3,3,3,4) (1,2)(0,4)(3)", cArchimedean},
|
|
{"(3,5,3,5)", cArchimedean},
|
|
{"(3,10,10)", cArchimedean},
|
|
{"(5,6,6)", cArchimedean},
|
|
{"(3,4,5,4)", cArchimedean},
|
|
{"(4,6,10)", cArchimedean},
|
|
{"(3,3,3,3,5) (1,2)(0,4)(3)", cArchimedean},
|
|
|
|
/* prisms */
|
|
{"(3,4,4)", cPrism},
|
|
{"(5,4,4)", cPrism},
|
|
{"(6,4,4)", cPrism},
|
|
{"(7,4,4)", cPrism},
|
|
|
|
/* sample antiprisms */
|
|
{"(3,3,3,4)(1)(2)", cAntiPrism},
|
|
{"(3,3,3,5)(1)(2)", cAntiPrism},
|
|
{"(3,3,3,6)(1)(2)", cAntiPrism},
|
|
{"(3,3,3,7)(1)(2)", cAntiPrism},
|
|
|
|
/* hyperbolic ones */
|
|
{"(3)^7", cHyperRegular},
|
|
{"(4)^5", cHyperRegular},
|
|
{"(4)^6", cHyperRegular},
|
|
{"(5,5,5,5)", cHyperRegular},
|
|
{"(7,7,7)", cHyperRegular},
|
|
{"(8,8,8)", cHyperRegular},
|
|
{"(7,6^2)", cHyperSemi},
|
|
{"(4,6,14)", cHyperSemi},
|
|
{"(3,4,7,4)", cHyperSemi},
|
|
{"(6,6,4L,4L)", cHyperSemi},
|
|
{"(8,8,4L,4L)", cHyperSemi},
|
|
{"(3,3,3,3,7) (1,2)(0,4)(3)", cHyperSemi},
|
|
{"(3H,6,6,6) (1,0)[2](3)", cHyperSemi},
|
|
{"(3,6,6,6) (0 1)(2)(3)", cHyperSemi},
|
|
{"(3,4,4L,4L,4)", cHyperSemi}, // buggy
|
|
{"(3l,4l,4,4,4) (0 1)[2 3](4)", cHyperSemi},
|
|
{"(3,4,4,4,4) (0 1)(2)(3)(4)", cHyperSemi},
|
|
{"(3,4,4L,4L,4L,4)", cHyperSemi},
|
|
{"(6,6,3L,3L,3L) (0 2)(1)(3)(4)", cHyperSemi},
|
|
{"(5,3,5,3,3) (0 1)(2 3)(4)", cHyperSemi},
|
|
{"(4,3,3,3,3,3) (0 1)(2 3)(4 5)", cHyperSemi},
|
|
{"(3l,5l,5,5,5,5) (0 1)[2 3](4)(5)", cHyperSemi},
|
|
{"(3,5,5,5,5,5) (0 1)(2 4)(3 5)", cHyperSemi},
|
|
{"(3l,5l,5,5,5,5) (0 1)(2 4)[3 5]", cHyperSemi},
|
|
{"(3l,5l,5,5,5,5) (0 1)[2 4](3)(5)", cHyperSemi},
|
|
{"(3,5,5,5,5,5) (0 1)(2)(3)(4)(5)", cHyperSemi},
|
|
|
|
/* interesting symmetry variants */
|
|
{"(3,3,3,3,3,3) (0,1)(2,3)(4,5)", cEucRegular},
|
|
{"(3,3H,3,3,3L,3L,3L) (0 4)(1 2)(3)(5)(6)", cHyperRegular},
|
|
{"(3,3H,3,3,3L,3L,3L) (0 4)(1 2)(3)[5 6]", cHyperRegular},
|
|
{"(3,3H,3,3L,3,3L,3L) [0 4](1 2)[3 5](6)", cHyperRegular},
|
|
|
|
/* with digons */
|
|
{"(2,3,3,3,3,3) (2,3)(4,5)", cWeird},
|
|
{"(6,6)", cWeird},
|
|
{"(2,2)", cWeird},
|
|
{"(2,2,2,2,2,2)", cWeird},
|
|
{"(6,6,2)", cWeird},
|
|
{"(6,2,6,2)", cWeird},
|
|
};
|
|
|
|
int lastsample = 0;
|
|
|
|
vector<archimedean_tiling> tilings;
|
|
|
|
int spos = 0;
|
|
|
|
archimedean_tiling edited;
|
|
|
|
bool symbol_editing;
|
|
|
|
void next_variation() {
|
|
set_variation(
|
|
PURE ? eVariation::dual :
|
|
DUAL ? eVariation::bitruncated :
|
|
eVariation::pure);
|
|
need_reset_geometry = true;
|
|
start_game();
|
|
}
|
|
|
|
void enable(archimedean_tiling& arct) {
|
|
stop_game();
|
|
if(!archimedean) set_variation(eVariation::pure);
|
|
set_geometry(gArchimedean);
|
|
patterns::whichPattern = patterns::PAT_NONE;
|
|
current = arct;
|
|
#if CAP_TEXTURE
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpThree) {
|
|
patterns::whichPattern = patterns::PAT_COLORING;
|
|
if(geosupport_threecolor() < 2) {
|
|
if(arct.support_threecolor() == 2) set_variation(eVariation::pure);
|
|
else if(arct.support_threecolor_bitruncated() == 2) set_variation(eVariation::bitruncated);
|
|
}
|
|
}
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpFootball) {
|
|
patterns::whichPattern = patterns::PAT_TYPES, patterns::subpattern_flags = patterns::SPF_FOOTBALL;
|
|
if(geosupport_football() < 2) set_variation(eVariation::bitruncated);
|
|
}
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpChess) {
|
|
patterns::whichPattern = patterns::PAT_CHESS;
|
|
if(!geosupport_chessboard()) {
|
|
if(arct.support_chessboard()) set_variation(eVariation::pure);
|
|
else if(arct.support_threecolor_bitruncated() == 2) set_variation(eVariation::dual);
|
|
}
|
|
}
|
|
#endif
|
|
need_reset_geometry = true;
|
|
start_game();
|
|
}
|
|
|
|
function<void()> setcanvas(char c) {
|
|
return [c] () {
|
|
stop_game();
|
|
firstland = specialland = laCanvas;
|
|
patterns::whichCanvas = c;
|
|
start_game();
|
|
};
|
|
};
|
|
|
|
void show() {
|
|
if(lastsample < isize(samples)) {
|
|
string s = samples[lastsample].first;
|
|
int col = samples[lastsample].second;
|
|
lastsample++;
|
|
archimedean_tiling tested;
|
|
tested.parse(s);
|
|
if(tested.errors) {
|
|
printf("WARNING: %d errors on %s '%s'\n", tested.errors, s.c_str(), tested.errormsg.c_str());
|
|
}
|
|
else {
|
|
tested.coloring = col;
|
|
tilings.push_back(move(tested));
|
|
/* sort(tilings.begin(), tilings.end(), [] (archimedean_tiling& s1, archimedean_tiling& s2) {
|
|
if(s1.euclidean_angle_sum < s2.euclidean_angle_sum - 1e-6) return true;
|
|
if(s2.euclidean_angle_sum < s1.euclidean_angle_sum - 1e-6) return false;
|
|
return s1.symbol < s2.symbol;
|
|
}); */
|
|
}
|
|
}
|
|
cmode = sm::SIDE | sm::MAYDARK;
|
|
gamescreen(0);
|
|
dialog::init(XLAT("Archimedean tilings"));
|
|
|
|
if(symbol_editing) {
|
|
dialog::addSelItem("edit", dialog::view_edited_string(), '/');
|
|
dialog::add_action([] () {
|
|
symbol_editing = false;
|
|
if(!edited.errors) enable(edited);
|
|
});
|
|
dialog::addBreak(100);
|
|
if(edited.errors)
|
|
dialog::addInfo(edited.errormsg, 0xFF0000);
|
|
else
|
|
dialog::addInfo(XLAT("OK"), 0x00FF00);
|
|
|
|
dialog::addBreak(100);
|
|
dialog::addSelItem(XLAT("full angle"), fts(edited.euclidean_angle_sum * 180) + "°", 0);
|
|
dialog::addSelItem(XLAT("size of the world"), edited.world_size(), 0);
|
|
|
|
edited.compute_geometry();
|
|
dialog::addSelItem(XLAT("edge length"), fts(edited.edgelength) + (edited.get_class() == gcEuclid ? XLAT(" (arbitrary)") : ""), 0);
|
|
current.compute_geometry();
|
|
dialog::addBreak(100);
|
|
}
|
|
else {
|
|
string cs = archimedean ? current.symbol : XLAT("OFF");
|
|
dialog::addSelItem("edit", cs, '/');
|
|
dialog::add_action([] () {
|
|
symbol_editing = true;
|
|
edited = current;
|
|
dialog::start_editing(edited.symbol);
|
|
edited.parse();
|
|
});
|
|
dialog::addBreak(100);
|
|
int nextpos = spos;
|
|
int shown = 0;
|
|
while(nextpos < isize(tilings) && shown < 10) {
|
|
auto &ps = tilings[nextpos++];
|
|
bool valid = true;
|
|
string suffix = "";
|
|
#if CAP_TEXTURE
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpThree) {
|
|
valid = false;
|
|
if(ps.support_threecolor() == 2) valid = true, suffix += bitruncnames[int(eVariation::pure)];
|
|
if(ps.support_threecolor_bitruncated() == 2) valid = true, suffix += bitruncnames[int(eVariation::bitruncated)];
|
|
}
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpFootball) {
|
|
if(ps.support_football() == 2) suffix += bitruncnames[int(eVariation::pure)];
|
|
suffix += bitruncnames[int(eVariation::bitruncated)];
|
|
}
|
|
if(texture::config.tstate == texture::tsActive && texture::cgroup == cpChess && !ps.support_chessboard()) {
|
|
valid = false;
|
|
if(ps.support_chessboard()) valid = true, suffix += bitruncnames[int(eVariation::pure)];
|
|
if(ps.support_threecolor_bitruncated() == 2) valid = true, suffix += bitruncnames[int(eVariation::dual)];
|
|
}
|
|
#endif
|
|
if(!valid) continue;
|
|
dialog::addSelItem(ps.symbol, fts(ps.euclidean_angle_sum * 180) + "°" + suffix, 'a' + shown);
|
|
dialog::lastItem().color = ps.coloring;
|
|
dialog::add_action([&] () { enable(ps); });
|
|
shown++;
|
|
}
|
|
dialog::addItem(XLAT("next page"), '-');
|
|
if(shown == 0) nextpos = 0;
|
|
dialog::add_action([nextpos] () {
|
|
if(nextpos >= isize(tilings))
|
|
spos = 0;
|
|
else spos = nextpos;
|
|
});
|
|
dialog::addItem(XLAT("previous page"), '=');
|
|
dialog::add_action([] () {
|
|
spos -= 10;
|
|
if(spos < 0) spos = 0;
|
|
});
|
|
|
|
if(archimedean) {
|
|
dialog::addSelItem(XLAT("size of the world"), current.world_size(), 0);
|
|
dialog::addSelItem(XLAT("edge length"), current.get_class() == gcEuclid ? (fts(current.edgelength) + XLAT(" (arbitrary)")) : fts6(current.edgelength), 0);
|
|
|
|
dialog::addItem(XLAT("color by symmetries"), 't');
|
|
dialog::add_action(setcanvas('A'));
|
|
}
|
|
else {
|
|
dialog::addBreak(100);
|
|
dialog::addBreak(100);
|
|
dialog::addBreak(100);
|
|
}
|
|
|
|
if(true) {
|
|
dialog::addItem(XLAT("color by sides"), 'u');
|
|
dialog::add_action(setcanvas('B'));
|
|
}
|
|
|
|
if(geosupport_threecolor() == 2) {
|
|
dialog::addItem(XLAT("three colors"), 'w');
|
|
dialog::add_action(setcanvas('T'));
|
|
}
|
|
else if(geosupport_football() == 2) {
|
|
dialog::addItem(XLAT("football"), 'w');
|
|
dialog::add_action(setcanvas('F'));
|
|
}
|
|
else if(geosupport_chessboard()) {
|
|
dialog::addItem(XLAT("chessboard"), 'w');
|
|
dialog::add_action(setcanvas('c'));
|
|
}
|
|
else dialog::addBreak(100);
|
|
|
|
if(archimedean) {
|
|
dialog::addSelItem(XLAT("variations"), gp::operation_name(), 'v');
|
|
dialog::add_action(next_variation);
|
|
}
|
|
else dialog::addBreak(100);
|
|
}
|
|
|
|
dialog::addHelp();
|
|
dialog::addBack();
|
|
dialog::display();
|
|
|
|
keyhandler = [] (int sym, int uni) {
|
|
if(symbol_editing && sym == SDLK_RETURN) sym = uni = '/';
|
|
dialog::handleNavigation(sym, uni);
|
|
if(symbol_editing && dialog::handle_edit_string(sym, uni)) {
|
|
edited.parse(edited.symbol);
|
|
return;
|
|
}
|
|
if(doexiton(sym, uni)) popScreen();
|
|
};
|
|
}
|
|
|
|
string archimedean_tiling::world_size() {
|
|
if(get_class() == gcEuclid) return "∞";
|
|
|
|
int nom = 2 - N, denom = 2;
|
|
for(int f: faces) {
|
|
int g = gcd(denom, f);
|
|
nom = (nom * f + denom) / g;
|
|
denom = denom / g * f;
|
|
}
|
|
int anom = 0, adenom = 1;
|
|
if(BITRUNCATED || DUAL) anom = 1, adenom = 1;
|
|
if(!DUAL) for(int f: faces) {
|
|
int g = gcd(adenom, f);
|
|
anom = (anom * f + adenom) / g;
|
|
adenom = adenom / g * f;
|
|
}
|
|
anom *= 2 * denom, adenom *= nom;
|
|
int g = gcd(anom, adenom);
|
|
anom /= g; adenom /= g;
|
|
if(adenom < 0) anom = -anom, adenom = -adenom;
|
|
string s;
|
|
bool hyp = (anom < 0);
|
|
if(hyp) anom = -anom;
|
|
if(adenom > 1)
|
|
s += its(anom) + "/" + its(adenom);
|
|
else
|
|
s += its(anom);
|
|
if(hyp) s += " exp(∞)";
|
|
return s;
|
|
}
|
|
|
|
int degree(heptagon *h) {
|
|
return isize(current.adjacent[id_of(h)]);
|
|
}
|
|
|
|
bool is_vertex(heptagon *h) {
|
|
return id_of(h) >= 2 * current.N;
|
|
}
|
|
|
|
int valence() {
|
|
if(PURE) return arcm::current.N;
|
|
if(BITRUNCATED) return 3;
|
|
// in DUAL, usually valence would depend on the vertex.
|
|
// 3 is the most interesting, as it allows us to kill hedgehog warriors
|
|
int total = 0;
|
|
for(int i: current.faces) {
|
|
if(i == 3) return 3;
|
|
total += i;
|
|
}
|
|
return total / isize(current.faces);
|
|
}
|
|
|
|
}
|
|
|
|
}
|