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#include <functional>
#include <iostream>
#include <fstream>
#include <list>
#include <cmath>
#include "randutils/randutils.hpp"
#include "pcg-cpp/include/pcg_random.hpp"
using Rng = randutils::random_generator<pcg32>;
class Edge {
public:
unsigned index;
std::list<double> weights;
double probability;
Edge() {
probability = 0;
}
};
class Face {
public:
std::array<std::reference_wrapper<Edge>, 4> edges;
Face(Edge& a, Edge& b, Edge& c, Edge& d) : edges({a, b, c, d}) {}
};
class AztecDiamond {
public:
std::vector<Edge> edges;
std::vector<std::vector<Face>> faces;
AztecDiamond(unsigned n) : edges(pow(2 * n, 2)), faces(n) {
for (unsigned i = 0; i < edges.size(); i++) {
edges[i].index = i;
}
for (unsigned i = 1; i <= n; i++) {
faces[i - 1].reserve(pow(i, 2));
for (unsigned j = 0; j < pow(i, 2); j++) {
unsigned x = j % (i);
unsigned y = j / (i);
unsigned x0 = n - i;
unsigned y0 = n - i;
faces[i - 1].push_back(Face(
edges[2 * n * (y0 + 2 * y) + x0 + 2 * x],
edges[2 * n * (y0 + 2 * y) + x0 + 2 * x + 1],
edges[2 * n * (y0 + 2 * y + 1) + x0 + 2 * x],
edges[2 * n * (y0 + 2 * y + 1) + x0 + 2 * x + 1]
));
}
}
}
};
int main(int argc, char* argv[]) {
unsigned n = 100;
unsigned m = 100;
int opt;
while ((opt = getopt(argc, argv, "n:m:")) != -1) {
switch (opt) {
case 'n':
n = atoi(optarg);
break;
case 'm':
m = (unsigned)atof(optarg);
break;
default:
exit(1);
}
}
Rng r;
AztecDiamond a(n);
/* For checking if the faces are appropriately defined.
for (std::vector<Face>& fs : a.faces) {
for (Face& f : fs) {
for (Edge& e : f.edges) {
unsigned v1 = (1 + (e.index % (2 * n))) / 2 + (n + 1) * ((e.index / 4) / n);
unsigned v2 = n * (n + 1) + (e.index % (2 * n)) / 2 + n * (((e.index + 2 * n) / 4) / n);
std::cout << v1 << " " << v2 << " ";
}
}
std::cout << std::endl;
}
*/
return 0;
}
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