fix enhanced-determinism compilation (#287)

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+### Fix
+
+- Fix compiling with `enhanced-determinism` feature enabled.
+  - This is now checked on CI.
+
+## v0.17.2
+
 ### Added
 
 - Implement `::to_trimesh` in 2d for `Cuboid` and `Aabb`.
@@ -21,9 +28,9 @@
 - Removed `IntersectionCompositeShapeShapeBestFirstVisitor` (which had been deprecated for a while):
   use `IntersectionCompositeShapeShapeVisitor` instead.
 
-### Fixed
+### Fix
 
-- Fixed some robustness issues in mesh/mesh intersection when parts of both meshes overlap perfectly.
+- Fix some robustness issues in mesh/mesh intersection when parts of both meshes overlap perfectly.
 - Improve robustness of convex polygons intersections when all the vertices of one polygon are located in either the
   edges or vertices of the other polygon.
 - Fix incorrect orientation sometimes given to the polygon output by the convex polygon intersections when one of the

src/transformation/mesh_intersection/mesh_intersection.rs

@@ -4,12 +4,13 @@ use crate::query::point::point_query::PointQueryWithLocation;
 use crate::query::{visitors::BoundingVolumeIntersectionsSimultaneousVisitor, PointQuery};
 use crate::shape::{TriMesh, Triangle};
 use crate::utils;
+use crate::utils::hashmap::Entry;
 use crate::utils::hashmap::HashMap;
 use na::{Point3, Vector3};
 use rstar::RTree;
 use spade::{ConstrainedDelaunayTriangulation, InsertionError, Triangulation as _};
 use std::collections::BTreeMap;
-use std::collections::{hash_map::Entry, HashSet};
+use std::collections::HashSet;
 #[cfg(feature = "wavefront")]
 use std::path::PathBuf;
 
@@ -705,6 +706,9 @@ fn merge_triangle_sets(
                             // If we are inserting two identical triangles but with mismatching
                             // orientations, we can just ignore both because they cover a degenerate
                             // 2D plane.
+                            #[cfg(feature = "enhanced-determinism")]
+                            let _ = e.swap_remove();
+                            #[cfg(not(feature = "enhanced-determinism"))]
                             let _ = e.remove();
                         }
                     }