LSSTApplications  20.0.0
LSSTDataManagementBasePackage
curve.cc
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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 namespace {
32 
33 PYBIND11_MODULE(curve, mod) {
34  mod.def("log2", (uint8_t(*)(uint64_t)) & log2);
35  mod.def("mortonIndex", (uint64_t(*)(uint32_t, uint32_t)) & mortonIndex,
36  "x"_a, "y"_a);
37  mod.def("mortonIndexInverse",
39  "z"_a);
40  mod.def("mortonToHilbert", &mortonToHilbert, "z"_a, "m"_a);
41  mod.def("hilbertToMorton", &hilbertToMorton, "h"_a, "m"_a);
42  mod.def("hilbertIndex",
43  (uint64_t(*)(uint32_t, uint32_t, int)) & hilbertIndex, "x"_a, "y"_a,
44  "m"_a);
45  mod.def("hilbertIndexInverse",
46  (std::tuple<uint32_t, uint32_t>(*)(uint64_t, int)) &
48  "h"_a, "m"_a);
49 }
50 
51 } // <anonymous>
52 } // sphgeom
53 } // lsst
std::tuple
lsst::sphgeom::log2
uint8_t log2(uint64_t x)
Definition: curve.h:98
lsst::sphgeom::hilbertIndexInverse
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
lsst::sphgeom::hilbertIndex
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
lsst::sphgeom::mortonIndexInverse
std::tuple< uint32_t, uint32_t > mortonIndexInverse(uint64_t z)
mortonIndexInverse separates the even and odd bits of z.
Definition: curve.h:195
lsst
A base class for image defects.
Definition: imageAlgorithm.dox:1
lsst::sphgeom::mortonToHilbert
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
lsst::sphgeom::hilbertToMorton
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
curve.h
This file contains functions for space-filling curves.
pybind11
Definition: _GenericMap.cc:40
lsst::sphgeom::mortonIndex
uint64_t mortonIndex(uint32_t x, uint32_t y)
mortonIndex interleaves the bits of x and y.
Definition: curve.h:148
lsst::afw::cameraGeom::PYBIND11_MODULE
PYBIND11_MODULE(camera, mod)
Definition: camera.cc:133