LSST Applications  21.0.0-172-gfb10e10a+18fedfabac,22.0.0+297cba6710,22.0.0+80564b0ff1,22.0.0+8d77f4f51a,22.0.0+a28f4c53b1,22.0.0+dcf3732eb2,22.0.1-1-g7d6de66+2a20fdde0d,22.0.1-1-g8e32f31+297cba6710,22.0.1-1-geca5380+7fa3b7d9b6,22.0.1-12-g44dc1dc+2a20fdde0d,22.0.1-15-g6a90155+515f58c32b,22.0.1-16-g9282f48+790f5f2caa,22.0.1-2-g92698f7+dcf3732eb2,22.0.1-2-ga9b0f51+7fa3b7d9b6,22.0.1-2-gd1925c9+bf4f0e694f,22.0.1-24-g1ad7a390+a9625a72a8,22.0.1-25-g5bf6245+3ad8ecd50b,22.0.1-25-gb120d7b+8b5510f75f,22.0.1-27-g97737f7+2a20fdde0d,22.0.1-32-gf62ce7b1+aa4237961e,22.0.1-4-g0b3f228+2a20fdde0d,22.0.1-4-g243d05b+871c1b8305,22.0.1-4-g3a563be+32dcf1063f,22.0.1-4-g44f2e3d+9e4ab0f4fa,22.0.1-42-gca6935d93+ba5e5ca3eb,22.0.1-5-g15c806e+85460ae5f3,22.0.1-5-g58711c4+611d128589,22.0.1-5-g75bb458+99c117b92f,22.0.1-6-g1c63a23+7fa3b7d9b6,22.0.1-6-g50866e6+84ff5a128b,22.0.1-6-g8d3140d+720564cf76,22.0.1-6-gd805d02+cc5644f571,22.0.1-8-ge5750ce+85460ae5f3,master-g6e05de7fdc+babf819c66,master-g99da0e417a+8d77f4f51a,w.2021.48
LSST Data Management Base Package
_curve.cc
Go to the documentation of this file.
1 /*
2  * LSST Data Management System
3  * See COPYRIGHT file at the top of the source tree.
4  *
5  * This product includes software developed by the
6  * LSST Project (http://www.lsst.org/).
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the LSST License Statement and
19  * the GNU General Public License along with this program. If not,
20  * see <https://www.lsstcorp.org/LegalNotices/>.
21  */
22 #include "pybind11/pybind11.h"
23 
24 #include "lsst/sphgeom/curve.h"
25 
26 namespace py = pybind11;
27 using namespace pybind11::literals;
28 
29 namespace lsst {
30 namespace sphgeom {
31 
32 void defineCurve(py::module &mod) {
33  mod.def("log2", (uint8_t(*)(uint64_t)) & log2);
34  mod.def("mortonIndex", (uint64_t(*)(uint32_t, uint32_t)) & mortonIndex,
35  "x"_a, "y"_a);
36  mod.def("mortonIndexInverse",
38  "z"_a);
39  mod.def("mortonToHilbert", &mortonToHilbert, "z"_a, "m"_a);
40  mod.def("hilbertToMorton", &hilbertToMorton, "h"_a, "m"_a);
41  mod.def("hilbertIndex",
42  (uint64_t(*)(uint32_t, uint32_t, int)) & hilbertIndex, "x"_a, "y"_a,
43  "m"_a);
44  mod.def("hilbertIndexInverse",
45  (std::tuple<uint32_t, uint32_t>(*)(uint64_t, int)) &
47  "h"_a, "m"_a);
48 }
49 
50 } // sphgeom
51 } // lsst
This file contains functions for space-filling curves.
std::tuple< uint32_t, uint32_t > hilbertIndexInverse(uint64_t h, int m)
hilbertIndexInverse returns the point (x, y) with Hilbert index h, where x and y are m bit integers.
Definition: curve.h:361
uint8_t log2(uint64_t x)
Definition: curve.h:98
uint64_t hilbertIndex(uint32_t x, uint32_t y, int m)
hilbertIndex returns the index of (x, y) in a 2-D Hilbert curve.
Definition: curve.h:349
void defineCurve(py::module &mod)
Definition: _curve.cc:32
uint64_t mortonIndex(uint32_t x, uint32_t y)
mortonIndex interleaves the bits of x and y.
Definition: curve.h:148
uint64_t hilbertToMorton(uint64_t h, int m)
hilbertToMorton converts the 2m-bit Hilbert index h to the corresponding Morton index.
Definition: curve.h:290
uint64_t mortonToHilbert(uint64_t z, int m)
mortonToHilbert converts the 2m-bit Morton index z to the corresponding Hilbert index.
Definition: curve.h:236
std::tuple< uint32_t, uint32_t > mortonIndexInverse(uint64_t z)
mortonIndexInverse separates the even and odd bits of z.
Definition: curve.h:195
A base class for image defects.