mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-11-09 15:39:55 +00:00
113 lines
2.4 KiB
C++
113 lines
2.4 KiB
C++
// Schmutz's Surface generator
|
|
// Copyright (C) 2018 Zeno Rogue, see 'hyper.cpp' for details
|
|
|
|
#include <stdio.h>
|
|
#include <vector>
|
|
#include <array>
|
|
#include <map>
|
|
#include <algorithm>
|
|
|
|
using namespace std;
|
|
|
|
void dualize(vector<int>& t) {
|
|
int N = t.size();
|
|
/*
|
|
printf("N = %d\n", N);
|
|
|
|
printf("pre dual:\n");
|
|
for(int a=0; a<N; a++) {
|
|
printf("%3d, ", t[a]);
|
|
if(a % 12 == 11) printf("\n");
|
|
}
|
|
|
|
printf("post dual:\n");
|
|
*/
|
|
|
|
vector<int> tmap(N, -1);
|
|
vector<int> trmap(N, -1);
|
|
int s = 0;
|
|
for(int i=0; i<N; i++) if(tmap[i] == -1) {
|
|
int j = i;
|
|
for(int k=0; k<12; k++) {
|
|
tmap[j] = s;
|
|
trmap[s] = j;
|
|
s++;
|
|
int oj = j;
|
|
j = t[j];
|
|
j = (j % 3 == 2) ? (j-2) : (j+1);
|
|
// printf("%d -> %d\n", oj, j);
|
|
}
|
|
if(j != i) printf("not equal\n"), exit(1);
|
|
// printf("OK\n");
|
|
}
|
|
// for(int a: tmap) printf("%d ", a); printf("\n");
|
|
// for(int a: trmap) printf("%d ", a); printf("\n");
|
|
vector<int> res(N, -1);
|
|
for(int i=0; i<N; i++) {
|
|
// printf("i=%d\n", i);
|
|
res[i] = tmap[t[trmap[i]]];
|
|
}
|
|
// for(int a: res) printf("%d ", a); printf("\n");
|
|
t = res;
|
|
|
|
for(int i=0; i<N; i++) {
|
|
int a = i;
|
|
for(int s=0; s<3; s++) {
|
|
a = res[a];
|
|
a++;
|
|
if(a % 12 == 0) a -= 12;
|
|
}
|
|
if(a != i) { printf("bug\n"); exit(1); }
|
|
}
|
|
}
|
|
|
|
int main() {
|
|
|
|
vector<int> triangles;
|
|
|
|
for(int a=0; a<12; a++) {
|
|
triangles.emplace_back(3 * ((a+1) % 12) + 1);
|
|
triangles.emplace_back(3 * ((a+11) % 12));
|
|
triangles.emplace_back(36 + (a%4) * 3 + 2 - (a/4));
|
|
}
|
|
|
|
for(int a=0; a<12; a++)
|
|
triangles.emplace_back(0);
|
|
|
|
for(int a=0; a<36; a++) if(triangles[a] >= 36) triangles[triangles[a]] = a;
|
|
|
|
dualize(triangles);
|
|
|
|
for(int a=0; a<48; a++) {
|
|
if(a % 12 == 0) printf("\n");
|
|
printf("%3d, ", triangles[a]);
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
triangles.clear();
|
|
|
|
for(int a=0; a<12; a++) {
|
|
triangles.emplace_back(3 * ((a+1) % 12) + 1);
|
|
triangles.emplace_back(3 * ((a+11) % 12));
|
|
triangles.emplace_back(36 + 3 * a);
|
|
}
|
|
|
|
for(int a=0; a<12; a++) {
|
|
triangles.emplace_back(3 * a + 2);
|
|
triangles.emplace_back(36 + (3 * a + 36 - 15 + 2) % 36);
|
|
triangles.emplace_back(36 + (3 * a + 36 + 15 + 1) % 36);
|
|
}
|
|
|
|
dualize(triangles);
|
|
|
|
for(int a=0; a<12*2*3; a++) {
|
|
if(a % 12 == 0) printf("\n");
|
|
printf("%3d, ", triangles[a]);
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|