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Commit f3e1fe2e authored by Alexander Dielen's avatar Alexander Dielen
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added more element index array methods

parent db4e5dae
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src/Mesh.hh
View file @ f3e1fe2e
......@@ -204,12 +204,6 @@ py::array_t<double> flt2numpy(Mesh& _mesh, const double& _flt, size_t _n = 1) {
return py::array_t<double>({_n}, {sizeof(double)}, &_flt, py::cast(_mesh));
}
/**
* Returns the face indices of this mesh as a numpy array.
*
* Note that the array is constructed on the fly and does not
* reference the underlying mesh.
*/
py::array_t<int> face_vertex_indices_trimesh(TriMesh& _self) {
if (_self.n_faces() == 0) {
return py::array_t<int>();
......@@ -227,59 +221,80 @@ py::array_t<int> face_vertex_indices_trimesh(TriMesh& _self) {
return py::array_t<int>(shape, strides, indices, base);
}
/**
* Returns the face indices of this mesh as a numpy array.
*
* If the faces of the mesh have different valences, the array
* is padded with -1 entries.
*
* Note that the array is constructed on the fly and does not
* reference the underlying mesh.
*/
py::array_t<int> face_vertex_indices_polymesh(PolyMesh& _self) {
if (_self.n_faces() == 0) {
template <class Mesh>
py::array_t<int> halfedge_vertex_indices(Mesh& _self) {
if (_self.n_halfedges() == 0) {
return py::array_t<int>();
}
int max_valence = 0;
for (auto fh : _self.faces()) {
max_valence = std::max(max_valence, int(_self.valence(fh)));
}
int *indices = new int[_self.n_faces() * max_valence];
for (auto fh : _self.faces()) {
auto fv_it = _self.fv_iter(fh);
const int valence = _self.valence(fh);
for (int i = 0; i < valence; ++i) {
indices[fh.idx() * max_valence + i] = fv_it->idx();
++fv_it;
}
for (int i = valence; i < max_valence; ++i) {
indices[fh.idx() * max_valence + i] = -1;
}
int *indices = new int[_self.n_halfedges() * 2];
for (auto heh : _self.halfedges()) {
auto vh1 = _self.from_vertex_handle(heh);
auto vh2 = _self.to_vertex_handle(heh);
indices[heh.idx() * 2 + 0] = vh1.idx();
indices[heh.idx() * 2 + 1] = vh2.idx();
}
const auto shape = {_self.n_faces(), size_t(max_valence)};
const auto strides = {max_valence * sizeof(int), sizeof(int)};
const auto shape = {_self.n_halfedges(), size_t(2)};
const auto strides = {2 * sizeof(int), sizeof(int)};
py::capsule base = free_when_done(indices);
return py::array_t<int>(shape, strides, indices, base);
}
/**
* Returns the edge indices of this mesh as a numpy array.
*
* Note that the array is constructed on the fly and does not
* reference the underlying mesh.
*/
template<class Mesh>
py::array_t<int> edge_vertex_indices(Mesh& _self) {
struct FuncEdgeVertex {
static void call(const OM::ArrayKernel& _mesh, OM::EdgeHandle _eh, int *_ptr) {
const auto heh = _mesh.halfedge_handle(_eh, 0);
_ptr[0] = _mesh.from_vertex_handle(heh).idx();
_ptr[1] = _mesh.to_vertex_handle(heh).idx();
}
};
struct FuncEdgeFace {
static void call(const OM::ArrayKernel& _mesh, OM::EdgeHandle _eh, int *_ptr) {
const auto heh1 = _mesh.halfedge_handle(_eh, 0);
const auto heh2 = _mesh.halfedge_handle(_eh, 1);
_ptr[0] = _mesh.face_handle(heh1).idx();
_ptr[1] = _mesh.face_handle(heh2).idx();
}
};
struct FuncEdgeHalfedge {
static void call(const OM::ArrayKernel& _mesh, OM::EdgeHandle _eh, int *_ptr) {
_ptr[0] = _mesh.halfedge_handle(_eh, 0).idx();
_ptr[1] = _mesh.halfedge_handle(_eh, 1).idx();
}
};
struct FuncHalfedgeToVertex {
static void call(const OM::ArrayKernel& _mesh, OM::HalfedgeHandle _heh, int *_ptr) {
*_ptr = _mesh.to_vertex_handle(_heh).idx();
}
};
struct FuncHalfedgeFromVertex {
static void call(const OM::ArrayKernel& _mesh, OM::HalfedgeHandle _heh, int *_ptr) {
*_ptr = _mesh.from_vertex_handle(_heh).idx();
}
};
struct FuncHalfedgeFace {
static void call(const OM::ArrayKernel& _mesh, OM::HalfedgeHandle _heh, int *_ptr) {
*_ptr = _mesh.face_handle(_heh).idx();
}
};
struct FuncHalfedgeEdge {
static void call(const OM::ArrayKernel& _mesh, OM::HalfedgeHandle _heh, int *_ptr) {
*_ptr = _mesh.edge_handle(_heh).idx();
}
};
template <class Mesh, class CopyFunc>
py::array_t<int> edge_other_indices(Mesh& _self) {
if (_self.n_edges() == 0) {
return py::array_t<int>();
}
int *indices = new int[_self.n_edges() * 2];
for (auto eh : _self.edges()) {
auto heh = _self.halfedge_handle(eh, 0);
auto vh1 = _self.from_vertex_handle(heh);
auto vh2 = _self.to_vertex_handle(heh);
indices[eh.idx() * 2 + 0] = vh1.idx();
indices[eh.idx() * 2 + 1] = vh2.idx();
CopyFunc::call(_self, eh, &indices[eh.idx() * 2]);
}
const auto shape = {_self.n_edges(), size_t(2)};
const auto strides = {2 * sizeof(int), sizeof(int)};
......@@ -287,26 +302,54 @@ py::array_t<int> edge_vertex_indices(Mesh& _self) {
return py::array_t<int>(shape, strides, indices, base);
}
/**
* Returns the halfedge indices of this mesh as a numpy array.
*
* Note that the array is constructed on the fly and does not
* reference the underlying mesh.
*/
template<class Mesh>
py::array_t<int> halfedge_vertex_indices(Mesh& _self) {
template <class Mesh, class CopyFunc>
py::array_t<int> halfedge_other_indices(Mesh& _self) {
if (_self.n_halfedges() == 0) {
return py::array_t<int>();
}
int *indices = new int[_self.n_halfedges() * 2];
int *indices = new int[_self.n_halfedges()];
for (auto heh : _self.halfedges()) {
auto vh1 = _self.from_vertex_handle(heh);
auto vh2 = _self.to_vertex_handle(heh);
indices[heh.idx() * 2 + 0] = vh1.idx();
indices[heh.idx() * 2 + 1] = vh2.idx();
CopyFunc::call(_self, heh, &indices[heh.idx()]);
}
const auto shape = {_self.n_halfedges(), size_t(2)};
const auto strides = {2 * sizeof(int), sizeof(int)};
const auto shape = {_self.n_halfedges()};
const auto strides = {sizeof(int)};
py::capsule base = free_when_done(indices);
return py::array_t<int>(shape, strides, indices, base);
}
template <class Mesh, class Handle, class Circulator>
py::array_t<int> indices(Mesh& _self) {
const size_t n = _self.py_n_items(Handle());
if (n == 0) return py::array_t<int>();
// find max valence
int max_valence = 0;
for (size_t i = 0; i < n; ++i) {
int valence = 0;
for (auto it = Circulator(_self, Handle(i)); it.is_valid(); ++it) {
valence++;
}
max_valence = std::max(max_valence, valence);
}
// allocate memory
int *indices = new int[n * max_valence];
// copy indices
for (size_t i = 0; i < n; ++i) {
int valence = 0;
for (auto it = Circulator(_self, Handle(i)); it.is_valid(); ++it) {
indices[i * max_valence + valence] = it->idx();
valence++;
}
for (size_t j = valence; j < max_valence; ++j) {
indices[i * max_valence + j] = -1;
}
}
// make numpy array
const auto shape = {n, size_t(max_valence)};
const auto strides = {max_valence * sizeof(int), sizeof(int)};
py::capsule base = free_when_done(indices);
return py::array_t<int>(shape, strides, indices, base);
}
......@@ -357,8 +400,8 @@ void expose_type_specific_functions(py::class_<PolyMesh>& _class) {
.def("insert_edge", &PolyMesh::insert_edge)
.def("face_vertex_indices", &face_vertex_indices_polymesh)
.def("fv_indices", &face_vertex_indices_polymesh)
.def("face_vertex_indices", &indices<PolyMesh, OM::FaceHandle, PolyMesh::FaceVertexIter>)
.def("fv_indices", &indices<PolyMesh, OM::FaceHandle, PolyMesh::FaceVertexIter>)
.def("calc_face_normal", [](PolyMesh& _self, np_point_t _p0, np_point_t _p1, np_point_t _p2) {
const Point p0(_p0.at(0), _p0.at(1), _p0.at(2));
......@@ -1197,11 +1240,43 @@ void expose_mesh(py::module& m, const char *_name) {
// numpy indices
//======================================================================
.def("edge_vertex_indices", &edge_vertex_indices<Mesh>)
.def("ev_indices", &edge_vertex_indices<Mesh>)
.def("vertex_vertex_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexVertexIter>)
.def("vv_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexVertexIter>)
.def("vertex_face_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexFaceIter>)
.def("vf_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexFaceIter>)
.def("vertex_edge_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexEdgeIter>)
.def("ve_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexEdgeIter>)
.def("vertex_outgoing_halfedge_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexOHalfedgeIter>)
.def("voh_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexOHalfedgeIter>)
.def("vertex_incoming_halfedge_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexIHalfedgeIter>)
.def("vih_indices", &indices<Mesh, OM::VertexHandle, typename Mesh::VertexIHalfedgeIter>)
.def("face_face_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceFaceIter>)
.def("ff_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceFaceIter>)
.def("face_edge_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceEdgeIter>)
.def("fe_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceEdgeIter>)
.def("face_halfedge_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceHalfedgeIter>)
.def("fh_indices", &indices<Mesh, OM::FaceHandle, typename Mesh::FaceHalfedgeIter>)
.def("edge_vertex_indices", &edge_other_indices<Mesh, FuncEdgeVertex>)
.def("ev_indices", &edge_other_indices<Mesh, FuncEdgeVertex>)
.def("edge_face_indices", &edge_other_indices<Mesh, FuncEdgeFace>)
.def("ef_indices", &edge_other_indices<Mesh, FuncEdgeFace>)
.def("edge_halfedge_indices", &edge_other_indices<Mesh, FuncEdgeHalfedge>)
.def("eh_indices", &edge_other_indices<Mesh, FuncEdgeHalfedge>)
.def("halfedge_vertex_indices", &halfedge_vertex_indices<Mesh>)
.def("hv_indices", &halfedge_vertex_indices<Mesh>)
.def("halfedge_to_vertex_indices", &halfedge_other_indices<Mesh, FuncHalfedgeToVertex>)
.def("htv_indices", &halfedge_other_indices<Mesh, FuncHalfedgeToVertex>)
.def("halfedge_from_vertex_indices", &halfedge_other_indices<Mesh, FuncHalfedgeFromVertex>)
.def("hfv_indices", &halfedge_other_indices<Mesh, FuncHalfedgeFromVertex>)
.def("halfedge_face_indices", &halfedge_other_indices<Mesh, FuncHalfedgeFace>)
.def("hf_indices", &halfedge_other_indices<Mesh, FuncHalfedgeFace>)
.def("halfedge_edge_indices", &halfedge_other_indices<Mesh, FuncHalfedgeEdge>)
.def("he_indices", &halfedge_other_indices<Mesh, FuncHalfedgeEdge>)
//======================================================================
// new property interface: single item
//======================================================================
......
src/MeshTypes.hh
View file @ f3e1fe2e
......@@ -173,6 +173,11 @@ public:
Mesh::copy_property(prop, _from, _to);
}
size_t py_n_items(OpenMesh::VertexHandle) const { return Mesh::n_vertices(); }
size_t py_n_items(OpenMesh::HalfedgeHandle) const { return Mesh::n_halfedges(); }
size_t py_n_items(OpenMesh::EdgeHandle) const { return Mesh::n_edges(); }
size_t py_n_items(OpenMesh::FaceHandle) const { return Mesh::n_faces(); }
private:
template <class Handle, class PropHandle>
......@@ -191,11 +196,6 @@ private:
std::map<std::string, EPropHandle>& py_prop_map(OpenMesh::EdgeHandle) { return eprop_map; }
std::map<std::string, FPropHandle>& py_prop_map(OpenMesh::FaceHandle) { return fprop_map; }
size_t py_n_items(OpenMesh::VertexHandle) const { return Mesh::n_vertices(); }
size_t py_n_items(OpenMesh::HalfedgeHandle) const { return Mesh::n_halfedges(); }
size_t py_n_items(OpenMesh::EdgeHandle) const { return Mesh::n_edges(); }
size_t py_n_items(OpenMesh::FaceHandle) const { return Mesh::n_faces(); }
std::map<std::string, VPropHandle> vprop_map;
std::map<std::string, HPropHandle> hprop_map;
std::map<std::string, EPropHandle> eprop_map;
......
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