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#include <wolff.hpp>
using namespace wolff;
template <class R_t, class X_t, class G_t>
class simple_measurement : public measurement<R_t, X_t, G_t> {
private:
unsigned n;
double E;
typename X_t::M_t M;
unsigned C;
double totalE;
typename X_t::F_t totalM;
double totalC;
public:
simple_measurement(const system<R_t, X_t, G_t>& S) {
n = 0;
M = S.nv * S.s[0];
E = 0;
#ifdef WOLFF_BOND_DEPENDENCE
for (unsigned i = 0; i < S.nv; i++) {
for (const typename G_t::halfedge& e : S.G.vertices[i].edges) {
E -= 0.5 * S.Z(e, S.s[i], S.s[j]);
}
}
#else
E -= S.ne * S.Z(S.s[0], S.s[0]);
#endif
#ifndef WOLFF_NO_FIELD
#ifdef WOLFF_SITE_DEPENDENCE
for (unsigned i = 0; i < S.nv; i++) {
E -= S.B(S.G.vertices[i], S.s[i]);
}
#else
E -= S.nv * S.B(S.s[0]);
#endif
#endif
totalE = 0;
totalM = 0.0 * (S.s[0]);
totalC = 0;
}
void pre_cluster(unsigned, unsigned, const system<R_t, X_t, G_t>&, const typename G_t::vertex&, const R_t&) override {
C = 0;
}
void plain_bond_visited(const system<R_t, X_t, G_t>&, const typename G_t::halfedge&, const X_t&, double dE) override {
E += dE;
}
#ifndef WOLFF_NO_FIELD
void ghost_bond_visited(const system<R_t, X_t, G_t>&, const typename G_t::vertex&, const X_t& s_old, const X_t& s_new, double dE) override {
E += dE;
M += s_new - s_old;
}
#endif
void plain_site_transformed(const system<R_t, X_t, G_t>& S, const typename G_t::vertex& v, const X_t& si_new) override {
C++;
#ifdef WOLFF_NO_FIELD
M += si_new - S.s[v.ind];
#endif
}
void post_cluster(unsigned, unsigned, const system<R_t, X_t, G_t>&) override {
totalE += E;
totalM += M;
totalC += C;
n++;
}
double avgE() {
return totalE / n;
}
typename X_t::F_t avgM() {
return totalM / n;
}
double avgC() {
return totalC / n;
}
};
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