fixed normal of integer objects

viewer/glow-extras/viewer/canvas.hh

@@ -501,14 +501,14 @@ public:
     triangle_ref add_face(tg::triangle<D, T> const& t, material const& mat = {})
     {
         static_assert(D == 3, "only supports 3D currently");
-        auto n = tg::vec3(tg::normal_of(t));
+        auto n = tg::normal_of(tg::triangle3(t));
         return _add_triangle(tg::pos3(t.pos0), tg::pos3(t.pos1), tg::pos3(t.pos2), n, n, n, mat);
     }
     template <class T>
     triangle_ref add_face(tg::box<2, T, 3> const& t, material const& mat = {})
     {
         auto start_cnt = _triangles.size();
-        auto n = tg::vec3(tg::normal_of(t));
+        auto n = tg::normal_of(tg::box2in3(t));
         auto v00 = tg::pos3(t[{-1, -1}]);
         auto v01 = tg::pos3(t[{-1, +1}]);
         auto v10 = tg::pos3(t[{+1, -1}]);
@@ -522,7 +522,7 @@ public:
     {
         auto start_cnt = _triangles.size();
         static_assert(D == 3, "only supports 3D currently");
-        auto vc = tg::pos3(tg::centroid_of(t));
+        auto vc = tg::centroid_of(tg::quad3(t));
         auto v00 = tg::pos3(t.pos00);
         auto v01 = tg::pos3(t.pos01);
         auto v10 = tg::pos3(t.pos10);