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authorJaron Kent-Dobias <jaron@kent-dobias.com>2021-11-12 17:50:55 +0100
committerJaron Kent-Dobias <jaron@kent-dobias.com>2021-11-12 17:50:55 +0100
commita321ef6520e1a4d8237b0e2058818ec975064803 (patch)
tree81de2bb0a68f1a5606ee1b721c6c2c9a9259bd6e
parentc616bc12f23162b6b1714ea936f4a2dafd0780a3 (diff)
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Some work on clusters.HEADmaster
-rw-r--r--soft_spheres.cpp11
-rw-r--r--spheres.hpp56
2 files changed, 59 insertions, 8 deletions
diff --git a/soft_spheres.cpp b/soft_spheres.cpp
index 10e90c7..e438362 100644
--- a/soft_spheres.cpp
+++ b/soft_spheres.cpp
@@ -21,10 +21,10 @@ public:
int main(int argc, char* argv[]) {
const unsigned n = 24;
- unsigned N = 1200;
+ unsigned N = 1000;
double R = 0.025;
double ε = 0.005;
- unsigned steps = 1e2;
+ unsigned steps = 1e3;
double β = 0.5;
initializeAnimation(argc, argv);
@@ -45,15 +45,14 @@ int main(int argc, char* argv[]) {
draw(m);
}
- for (unsigned i = 0; i < steps; i++) {
+ for (unsigned i = 0; i < 10 * steps; i++) {
for (unsigned j = 0; j < N; j++) {
m.randomMove(β, ε, r);
}
- unsigned k = m.randomClusterSwap(β, r);
- std::cout << k << std::endl;
+ unsigned k = m.randomCluster(β, r);
- if (k > 0 && k < N) {
+ if (k > 2 && k < N - 2) {
draw(m);
getchar();
}
diff --git a/spheres.hpp b/spheres.hpp
index 161ef9c..dd2a189 100644
--- a/spheres.hpp
+++ b/spheres.hpp
@@ -1,6 +1,7 @@
#pragma once
#include <assert.h>
+#include <random>
#include <set>
#include <vector>
#include <queue>
@@ -224,7 +225,6 @@ public:
}
};
-
template <int D, Particle<D> T> class Model {
private:
bool metropolisAccept(double β, double ΔE, Rng& r, double a = 1.0) const {
@@ -356,7 +356,7 @@ public:
}
if (pMax != NULL) {
- if (1 - 1e2 * exp(-β * ΔEmax) > r.uniform(0.0, 1.0)) {
+ if (1 - exp(-β * ΔEmax) > r.uniform(0.0, 1.0)) {
m.insert(pMax);
}
}
@@ -404,6 +404,58 @@ public:
return clusterFlip(β, g, m, r);
}
+ unsigned randomCluster(double β, Rng& r) {
+ Vector<2> t = {r.uniform(0.0, 1.0), r.uniform(0.0, 1.0)};
+
+ Matrix<2> mat;
+
+ mat(0, 0) = -1;
+ mat(1, 1) = -1;
+ mat(0, 1) = 0;
+ mat(1, 0) = 0;
+
+ Euclidean<2> g(t - mat * t, mat);
+
+ Move<D, T> m(g, {&r.pick(particles)});
+
+ return clusterFlip(β, g, m, r);
+ }
+
+ unsigned clusterNudge(double β, T& s, Rng& r) {
+ Vector<2> t = s.x + (Vector<2>){r.variate<double, std::normal_distribution>(0, s.r / 100),
+ r.variate<double, std::normal_distribution>(0, s.r / 100)}
+ ;
+
+ Matrix<2> mat;
+
+ mat(0, 0) = -1;
+ mat(1, 1) = -1;
+ mat(0, 1) = 0;
+ mat(1, 0) = 0;
+
+ Euclidean<2> g(t - mat * t, mat);
+
+ Move<D, T> m(g, {&s});
+
+ return clusterFlip(β, g, m, r);
+ }
+
+ unsigned clusterNeighborSwap(double β, T& s, Rng& r) {
+ T* s2 = &s;
+ while (s2 == &s) {
+ s2 = r.pick(nl.neighborsOf(s.x));
+ }
+ return clusterSwap(β, s, *s2, r);
+ }
+
+ unsigned randomClusterNeighborSwap(double β, Rng& r) {
+ return clusterNeighborSwap(β, r.pick(particles), r);
+ }
+
+ unsigned randomClusterNudge(double β, Rng& r) {
+ return clusterNudge(β, r.pick(particles), r);
+ }
+
unsigned randomClusterSwap(double β, Rng& r) {
return clusterSwap(β, r.pick(particles), r.pick(particles), r);
}