poly fixes

src/polymesh/algorithms/operations.hh

@@ -10,10 +10,26 @@
 
 namespace polymesh
 {
+/// Given a flat polymesh with convex faces, naively triangulates all faces
+void triangulate_naive(Mesh& m);
 
-// vertex_handle split(edge_handle e)
-// {
-//     // TODO
-// }
+/// ======== IMPLEMENTATION ========
 
+void triangulate_naive(Mesh& m)
+{
+    std::vector<vertex_handle> vs;
+    for (auto f : m.faces())
+    {
+        vs = f.vertices().to_vector();
+        if (vs.size() <= 3)
+            continue;
+
+        // remove
+        m.faces().remove(f);
+
+        // triangulate
+        for (auto i = 2u; i < vs.size(); ++i)
+            m.faces().add(vs[0], vs[1], vs[i]);
+    }
+}
 }

src/polymesh/cursors.hh

@@ -28,6 +28,8 @@ struct primitive_index
 
     bool operator==(index_t const& rhs) const { return value == rhs.value; }
     bool operator!=(index_t const& rhs) const { return value != rhs.value; }
+    bool operator==(handle_t const& rhs) const { return value == rhs.idx.value; }
+    bool operator!=(handle_t const& rhs) const { return value != rhs.idx.value; }
 
     /// indexes this primitive by a functor
     /// also works for attributes