From 9b761d3a6f8b94e47c4c39ad60f69be771a91f77 Mon Sep 17 00:00:00 2001
From: PavelMikus <pavel.mikus.mail@seznam.cz>
Date: Thu, 2 Jun 2022 15:29:42 +0200
Subject: [PATCH] fix random generator in short edge collpase, so that results
are deterministic
---
src/libslic3r/ShortEdgeCollapse.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/src/libslic3r/ShortEdgeCollapse.cpp b/src/libslic3r/ShortEdgeCollapse.cpp
index 897b57759..85d776843 100644
--- a/src/libslic3r/ShortEdgeCollapse.cpp
+++ b/src/libslic3r/ShortEdgeCollapse.cpp
@@ -18,8 +18,7 @@ void its_short_edge_collpase(indexed_triangle_set &mesh, size_t target_triangle_
std::vector<Vec3f> vertex_normals; // Vertex normal in this algorithm is normal of any! triangle that contains the vertex
std::vector<size_t> face_indices; //vector if indices, serves only the purpose of randomised traversal of the faces
- std::random_device rd;
- std::mt19937 generator(rd());
+ std::mt19937_64 generator { };
float decimation_ratio = 1.0f; // decimation ratio updated in each iteration. it is number of removed triangles / number of all
float edge_size = 0.2f; // Allowed collapsible edge size. Starts low, but is gradually increased