LSST Applications g180d380827+0f66a164bb,g2079a07aa2+86d27d4dc4,g2305ad1205+7d304bc7a0,g29320951ab+500695df56,g2bbee38e9b+0e5473021a,g337abbeb29+0e5473021a,g33d1c0ed96+0e5473021a,g3a166c0a6a+0e5473021a,g3ddfee87b4+e42ea45bea,g48712c4677+36a86eeaa5,g487adcacf7+2dd8f347ac,g50ff169b8f+96c6868917,g52b1c1532d+585e252eca,g591dd9f2cf+c70619cc9d,g5a732f18d5+53520f316c,g5ea96fc03c+341ea1ce94,g64a986408d+f7cd9c7162,g858d7b2824+f7cd9c7162,g8a8a8dda67+585e252eca,g99cad8db69+469ab8c039,g9ddcbc5298+9a081db1e4,ga1e77700b3+15fc3df1f7,gb0e22166c9+60f28cb32d,gba4ed39666+c2a2e4ac27,gbb8dafda3b+c92fc63c7e,gbd866b1f37+f7cd9c7162,gc120e1dc64+02c66aa596,gc28159a63d+0e5473021a,gc3e9b769f7+b0068a2d9f,gcf0d15dbbd+e42ea45bea,gdaeeff99f8+f9a426f77a,ge6526c86ff+84383d05b3,ge79ae78c31+0e5473021a,gee10cc3b42+585e252eca,gff1a9f87cc+f7cd9c7162,w.2024.17
LSST Data Management Base Package
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_curve.cc
Go to the documentation of this file.
1/*
2 * This file is part of sphgeom.
3 *
4 * Developed for the LSST Data Management System.
5 * This product includes software developed by the LSST Project
6 * (http://www.lsst.org).
7 * See the COPYRIGHT file at the top-level directory of this distribution
8 * for details of code ownership.
9 *
10 * This software is dual licensed under the GNU General Public License and also
11 * under a 3-clause BSD license. Recipients may choose which of these licenses
12 * to use; please see the files gpl-3.0.txt and/or bsd_license.txt,
13 * respectively. If you choose the GPL option then the following text applies
14 * (but note that there is still no warranty even if you opt for BSD instead):
15 *
16 * This program is free software: you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation, either version 3 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program. If not, see <http://www.gnu.org/licenses/>.
28 */
29#include "pybind11/pybind11.h"
30
31#include "lsst/sphgeom/curve.h"
32
33namespace py = pybind11;
34using namespace pybind11::literals;
35
36namespace lsst {
37namespace sphgeom {
38
39void defineCurve(py::module &mod) {
40 mod.def("log2", (uint8_t(*)(uint64_t)) & log2);
41 mod.def("mortonIndex", (uint64_t(*)(uint32_t, uint32_t)) & mortonIndex,
42 "x"_a, "y"_a);
43 mod.def("mortonIndexInverse",
45 "z"_a);
46 mod.def("mortonToHilbert", &mortonToHilbert, "z"_a, "m"_a);
47 mod.def("hilbertToMorton", &hilbertToMorton, "h"_a, "m"_a);
48 mod.def("hilbertIndex",
49 (uint64_t(*)(uint32_t, uint32_t, int)) & hilbertIndex, "x"_a, "y"_a,
50 "m"_a);
51 mod.def("hilbertIndexInverse",
52 (std::tuple<uint32_t, uint32_t>(*)(uint64_t, int)) &
54 "h"_a, "m"_a);
55}
56
57} // sphgeom
58} // lsst
This file contains functions for space-filling curves.
std::tuple< uint32_t, uint32_t > mortonIndexInverse(uint64_t z)
mortonIndexInverse separates the even and odd bits of z.
Definition curve.h:202
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:368
uint8_t log2(uint64_t x)
Definition curve.h:105
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:356
void defineCurve(py::module &mod)
Definition _curve.cc:39
uint64_t mortonIndex(uint32_t x, uint32_t y)
mortonIndex interleaves the bits of x and y.
Definition curve.h:155
uint64_t hilbertToMorton(uint64_t h, int m)
hilbertToMorton converts the 2m-bit Hilbert index h to the corresponding Morton index.
Definition curve.h:297
uint64_t mortonToHilbert(uint64_t z, int m)
mortonToHilbert converts the 2m-bit Morton index z to the corresponding Hilbert index.
Definition curve.h:243