From 1cd41b27808da0fe558cfe31dfc370a71ea2dc50 Mon Sep 17 00:00:00 2001 From: Jaron Kent-Dobias Date: Fri, 19 Apr 2019 13:31:16 -0400 Subject: added support for rotating a lattice --- lib/include/graph.hpp | 1 + lib/src/graph.cpp | 39 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 38 insertions(+), 2 deletions(-) (limited to 'lib') diff --git a/lib/include/graph.hpp b/lib/include/graph.hpp index 032a4d1..1714dc2 100644 --- a/lib/include/graph.hpp +++ b/lib/include/graph.hpp @@ -42,5 +42,6 @@ class graph { graph(unsigned n, double a, std::mt19937& rng); void helper(unsigned n, std::mt19937& rng); + graph const rotate(); }; diff --git a/lib/src/graph.cpp b/lib/src/graph.cpp index 364f339..974d3b3 100644 --- a/lib/src/graph.cpp +++ b/lib/src/graph.cpp @@ -157,9 +157,8 @@ graph::graph(unsigned n, double a, std::mt19937& rng) { this->helper(n, rng); } -void graph::helper(unsigned n, std::mt19937& rng) { +void graph::helper(unsigned nv, std::mt19937& rng) { std::uniform_real_distribution d(0.0, 1.0); - unsigned nv = n; vertices.resize(nv); // the coordinates of the lattice, from which a delaunay triangulation @@ -363,3 +362,39 @@ void graph::helper(unsigned n, std::mt19937& rng) { jcv_diagram_free(&diagram); } +graph::coordinate reverse(const graph::coordinate &x) { + return {x.y, x.x}; +} + +graph const graph::rotate() { + graph g2(*this); + + for (graph::vertex &v : g2.vertices) { + v.r = reverse(v.r); + for (graph::coordinate &r : v.polygon) { + r = reverse(r); + } + } + + for (graph::edge &e : g2.edges) { + e.r = reverse(e.r); + e.crossings = {e.crossings[1], e.crossings[0]}; + } + + for (graph::vertex &v : g2.dual_vertices) { + v.r = reverse(v.r); + for (graph::coordinate &r : v.polygon) { + r = reverse(r); + } + } + + for (graph::edge &e : g2.dual_edges) { + e.r = reverse(e.r); + e.crossings = {e.crossings[1], e.crossings[0]}; + } + + g2.L = reverse(g2.L); + + return g2; +} + -- cgit v1.2.3-70-g09d2