ipc-sim · zfergus · Jun 24, 2025 · Jun 24, 2025
diff --git a/python/src/adhesion/adhesion.cpp b/python/src/adhesion/adhesion.cpp
@@ -2,7 +2,6 @@
 
 #include <ipc/adhesion/adhesion.hpp>
 
-namespace py = pybind11;
 using namespace ipc;
 
 void define_adhesion(py::module_& m)
@@ -21,7 +20,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The normal adhesion potential.
         )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat_p"), py::arg("dhat_a"), py::arg("a2"));
+        "d"_a, "dhat_p"_a, "dhat_a"_a, "a2"_a);
 
     m.def(
         "normal_adhesion_potential_first_derivative",
@@ -38,7 +37,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The first derivative of the normal adhesion potential wrt d.
         )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat_p"), py::arg("dhat_a"), py::arg("a2"));
+        "d"_a, "dhat_p"_a, "dhat_a"_a, "a2"_a);
 
     m.def(
         "normal_adhesion_potential_second_derivative",
@@ -55,7 +54,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The second derivative of the normal adhesion potential wrt d.
         )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat_p"), py::arg("dhat_a"), py::arg("a2"));
+        "d"_a, "dhat_p"_a, "dhat_a"_a, "a2"_a);
 
     m.def(
         "max_normal_adhesion_force_magnitude",
@@ -71,7 +70,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The maximum normal adhesion force magnitude.
         )ipc_Qu8mg5v7",
-        py::arg("dhat_p"), py::arg("dhat_a"), py::arg("a2"));
+        "dhat_p"_a, "dhat_a"_a, "a2"_a);
 
     m.def(
         "tangential_adhesion_f0", &tangential_adhesion_f0,
@@ -85,7 +84,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The tangential adhesion mollifier function at y.
         )ipc_Qu8mg5v7",
-        py::arg("y"), py::arg("eps_a"));
+        "y"_a, "eps_a"_a);
 
     m.def(
         "tangential_adhesion_f1", &tangential_adhesion_f1,
@@ -99,7 +98,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The first derivative of the tangential adhesion mollifier function at y.
         )ipc_Qu8mg5v7",
-        py::arg("y"), py::arg("eps_a"));
+        "y"_a, "eps_a"_a);
 
     m.def(
         "tangential_adhesion_f2", &tangential_adhesion_f2,
@@ -113,7 +112,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The second derivative of the tangential adhesion mollifier function at y.
         )ipc_Qu8mg5v7",
-        py::arg("y"), py::arg("eps_a"));
+        "y"_a, "eps_a"_a);
 
     m.def(
         "tangential_adhesion_f1_over_x", &tangential_adhesion_f1_over_x,
@@ -127,7 +126,7 @@ void define_adhesion(py::module_& m)
         Returns:
             The first derivative of the tangential adhesion mollifier function divided by y.
         )ipc_Qu8mg5v7",
-        py::arg("y"), py::arg("eps_a"));
+        "y"_a, "eps_a"_a);
 
     m.def(
         "tangential_adhesion_f2_x_minus_f1_over_x3",
@@ -142,5 +141,5 @@ void define_adhesion(py::module_& m)
         Returns:
             The second derivative of the tangential adhesion mollifier function times y minus the first derivative all divided by y cubed.
         )ipc_Qu8mg5v7",
-        py::arg("y"), py::arg("eps_a"));
+        "y"_a, "eps_a"_a);
 }
diff --git a/python/src/adhesion/bindings.hpp b/python/src/adhesion/bindings.hpp
@@ -2,6 +2,4 @@
 
 #include <pybind11/pybind11.h>
 
-namespace py = pybind11;
-
 void define_adhesion(py::module_& m);
diff --git a/python/src/barrier/adaptive_stiffness.cpp b/python/src/barrier/adaptive_stiffness.cpp
@@ -4,7 +4,6 @@
 #include <ipc/candidates/candidates.hpp>
 #include <ipc/collisions/normal/normal_collisions.hpp>
 
-namespace py = pybind11;
 using namespace ipc;
 
 void define_adaptive_stiffness(py::module_& m)
@@ -42,10 +41,9 @@ void define_adaptive_stiffness(py::module_& m)
             The initial barrier stiffness.
             Maximum stiffness of the barrier.
         )ipc_Qu8mg5v7",
-        py::arg("bbox_diagonal"), py::arg("barrier"), py::arg("dhat"),
-        py::arg("average_mass"), py::arg("grad_energy"),
-        py::arg("grad_barrier"), py::arg("min_barrier_stiffness_scale") = 1e11,
-        py::arg("dmin") = 0);
+        "bbox_diagonal"_a, "barrier"_a, "dhat"_a, "average_mass"_a,
+        "grad_energy"_a, "grad_barrier"_a,
+        "min_barrier_stiffness_scale"_a = 1e11, "dmin"_a = 0);
 
     m.def(
         "update_barrier_stiffness", &update_barrier_stiffness,
@@ -64,10 +62,9 @@ void define_adaptive_stiffness(py::module_& m)
         Returns:
             The updated barrier stiffness.
         )ipc_Qu8mg5v7",
-        py::arg("prev_min_distance"), py::arg("min_distance"),
-        py::arg("max_barrier_stiffness"), py::arg("barrier_stiffness"),
-        py::arg("bbox_diagonal"), py::arg("dhat_epsilon_scale") = 1e-9,
-        py::arg("dmin") = 0);
+        "prev_min_distance"_a, "min_distance"_a, "max_barrier_stiffness"_a,
+        "barrier_stiffness"_a, "bbox_diagonal"_a, "dhat_epsilon_scale"_a = 1e-9,
+        "dmin"_a = 0);
 
     m.def(
         "semi_implicit_stiffness",
@@ -91,8 +88,7 @@ void define_adaptive_stiffness(py::module_& m)
         Returns:
             The semi-implicit stiffness.
         )ipc_Qu8mg5v7",
-        py::arg("stencil"), py::arg("vertices"), py::arg("mass"),
-        py::arg("local_hess"), py::arg("dmin"));
+        "stencil"_a, "vertices"_a, "mass"_a, "local_hess"_a, "dmin"_a);
 
     m.def(
         "semi_implicit_stiffness",
@@ -117,8 +113,8 @@ void define_adaptive_stiffness(py::module_& m)
         Returns:
             The semi-implicit stiffness's.
         )ipc_Qu8mg5v7",
-        py::arg("mesh"), py::arg("vertices"), py::arg("collisions"),
-        py::arg("vertex_masses"), py::arg("hess"), py::arg("dmin"));
+        "mesh"_a, "vertices"_a, "collisions"_a, "vertex_masses"_a, "hess"_a,
+        "dmin"_a);
 
     m.def(
         "semi_implicit_stiffness",
@@ -143,6 +139,6 @@ void define_adaptive_stiffness(py::module_& m)
         Returns:
             The semi-implicit stiffness's.
         )ipc_Qu8mg5v7",
-        py::arg("mesh"), py::arg("vertices"), py::arg("collisions"),
-        py::arg("vertex_masses"), py::arg("hess"), py::arg("dmin"));
+        "mesh"_a, "vertices"_a, "collisions"_a, "vertex_masses"_a, "hess"_a,
+        "dmin"_a);
 }
diff --git a/python/src/barrier/barrier.cpp b/python/src/barrier/barrier.cpp
@@ -2,7 +2,6 @@
 
 #include <ipc/barrier/barrier.hpp>
 
-namespace py = pybind11;
 using namespace ipc;
 
 class PyBarrier : public Barrier {
@@ -21,7 +20,7 @@ void define_barrier(py::module_& m)
     py::class_<Barrier, PyBarrier, std::shared_ptr<Barrier>>(m, "Barrier")
         .def(py::init<>())
         .def(
-            "__call__", &Barrier::operator(), py::arg("d"), py::arg("dhat"),
+            "__call__", &Barrier::operator(), "d"_a, "dhat"_a,
             R"ipc_Qu8mg5v7(
             Evaluate the barrier function.
 
@@ -33,8 +32,7 @@ void define_barrier(py::module_& m)
                 The value of the barrier function at d.
             )ipc_Qu8mg5v7")
         .def(
-            "first_derivative", &Barrier::first_derivative, py::arg("d"),
-            py::arg("dhat"),
+            "first_derivative", &Barrier::first_derivative, "d"_a, "dhat"_a,
             R"ipc_Qu8mg5v7(
             Evaluate the first derivative of the barrier function wrt d.
 
@@ -46,8 +44,7 @@ void define_barrier(py::module_& m)
                 The value of the first derivative of the barrier function at d.
             )ipc_Qu8mg5v7")
         .def(
-            "second_derivative", &Barrier::second_derivative, py::arg("d"),
-            py::arg("dhat"),
+            "second_derivative", &Barrier::second_derivative, "d"_a, "dhat"_a,
             R"ipc_Qu8mg5v7(
             Evaluate the second derivative of the barrier function wrt d.
 
@@ -59,7 +56,7 @@ void define_barrier(py::module_& m)
                 The value of the second derivative of the barrier function at d.
             )ipc_Qu8mg5v7")
         .def(
-            "units", &Barrier::units, py::arg("dhat"),
+            "units", &Barrier::units, "dhat"_a,
             R"ipc_Qu8mg5v7(
             Get the units of the barrier function.
 
@@ -121,7 +118,8 @@ void define_barrier(py::module_& m)
         .def(py::init());
 
     m.def(
-        "barrier", &barrier,
+        "barrier", &barrier, "d"_a,
+        "dhat"_a
         R"ipc_Qu8mg5v7(
         Function that grows to infinity as d approaches 0 from the right.
 
@@ -135,11 +133,10 @@ void define_barrier(py::module_& m)
 
         Returns:
             The value of the barrier function at d.
-        )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat"));
+        )ipc_Qu8mg5v7");
 
     m.def(
-        "barrier_first_derivative", &barrier_first_derivative,
+        "barrier_first_derivative", &barrier_first_derivative, "d"_a, "dhat"_a,
         R"ipc_Qu8mg5v7(
         Derivative of the barrier function.
 
@@ -154,11 +151,11 @@ void define_barrier(py::module_& m)
 
         Returns:
             The derivative of the barrier wrt d.
-        )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat"));
+        )ipc_Qu8mg5v7");
 
     m.def(
-        "barrier_second_derivative", &barrier_second_derivative,
+        "barrier_second_derivative", &barrier_second_derivative, "d"_a,
+        "dhat"_a,
         R"ipc_Qu8mg5v7(
         Second derivative of the barrier function.
 
@@ -173,6 +170,5 @@ void define_barrier(py::module_& m)
 
         Returns:
             The second derivative of the barrier wrt d.
-        )ipc_Qu8mg5v7",
-        py::arg("d"), py::arg("dhat"));
+        )ipc_Qu8mg5v7");
 }
diff --git a/python/src/barrier/barrier_force_magnitude.cpp b/python/src/barrier/barrier_force_magnitude.cpp
@@ -2,7 +2,6 @@
 
 #include <ipc/barrier/barrier_force_magnitude.hpp>
 
-namespace py = pybind11;
 using namespace ipc;
 
 void define_barrier_force_magnitude(py::module_& m)
@@ -22,8 +21,8 @@ void define_barrier_force_magnitude(py::module_& m)
         Returns:
             The magnitude of the force.
         )ipc_Qu8mg5v7",
-        py::arg("distance_squared"), py::arg("barrier"), py::arg("dhat"),
-        py::arg("barrier_stiffness"), py::arg("dmin") = 0);
+        "distance_squared"_a, "barrier"_a, "dhat"_a, "barrier_stiffness"_a,
+        "dmin"_a = 0);
 
     m.def(
         "barrier_force_magnitude_gradient", &barrier_force_magnitude_gradient,
@@ -41,7 +40,6 @@ void define_barrier_force_magnitude(py::module_& m)
         Returns:
             The gradient of the force.
         )ipc_Qu8mg5v7",
-        py::arg("distance_squared"), py::arg("distance_squared_gradient"),
-        py::arg("barrier"), py::arg("dhat"), py::arg("barrier_stiffness"),
-        py::arg("dmin") = 0);
+        "distance_squared"_a, "distance_squared_gradient"_a, "barrier"_a,
+        "dhat"_a, "barrier_stiffness"_a, "dmin"_a = 0);
 }
diff --git a/python/src/barrier/bindings.hpp b/python/src/barrier/bindings.hpp
@@ -2,8 +2,6 @@
 
 #include <pybind11/pybind11.h>
 
-namespace py = pybind11;
-
 void define_adaptive_stiffness(py::module_& m);
 void define_barrier_force_magnitude(py::module_& m);
 void define_barrier(py::module_& m);
diff --git a/python/src/bindings.cpp b/python/src/bindings.cpp
@@ -1,8 +1,6 @@
 #include <common.hpp>
 #include <bindings.hpp>
 
-namespace py = pybind11;
-
 PYBIND11_MODULE(ipctk, m)
 {
     // py::options options;

diff --git a/python/src/bindings.hpp b/python/src/bindings.hpp
@@ -15,7 +15,5 @@
 
 #include <pybind11/pybind11.h>
 
-namespace py = pybind11;
-
 void define_collision_mesh(py::module_& m);
 void define_ipc(py::module_& m);
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2,6 +2,4 @@

		#include <pybind11/pybind11.h>

		namespace py = pybind11;

		void define_adhesion(py::module_& m);