lsst.sphgeom gb956055f9b+164b02c8d4
HtmPixelization.h
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1/*
2 * LSST Data Management System
3 * Copyright 2016 AURA/LSST.
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.
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19 * the GNU General Public License along with this program. If not,
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21 */
22
23#ifndef LSST_SPHGEOM_HTMPIXELIZATION_H_
24#define LSST_SPHGEOM_HTMPIXELIZATION_H_
25
29
30#include <cstdint>
31#include <stdexcept>
32
33#include "ConvexPolygon.h"
34#include "Pixelization.h"
35
36
37namespace lsst {
38namespace sphgeom {
39
51public:
53 static constexpr int MAX_LEVEL = 24;
54
58 static int level(uint64_t i);
59
63 static ConvexPolygon triangle(uint64_t i);
64
76 static std::string asString(uint64_t i);
77
81 explicit HtmPixelization(int level);
82
84 int getLevel() const { return _level; }
85
86 RangeSet universe() const override {
87 return RangeSet(static_cast<uint64_t>(8) << 2 * _level,
88 static_cast<uint64_t>(16) << 2 * _level);
89 }
90
91 std::unique_ptr<Region> pixel(uint64_t i) const override {
92 return std::unique_ptr<Region>(new ConvexPolygon(triangle(i)));
93 }
94
95 uint64_t index(UnitVector3d const &) const override;
96
97 std::string toString(uint64_t i) const override { return asString(i); }
98
99private:
100 int _level;
101
102 RangeSet _envelope(Region const &, size_t) const override;
103 RangeSet _interior(Region const &, size_t) const override;
104};
105
106}} // namespace lsst::sphgeom
107
108#endif // LSST_SPHGEOM_HTMPIXELIZATION_H_
This file declares a class for representing convex polygons with great circle edges on the unit spher...
This file defines an interface for pixelizations of the sphere.
Definition: ConvexPolygon.h:57
Definition: HtmPixelization.h:50
int getLevel() const
getLevel returns the subdivision level of this pixelization.
Definition: HtmPixelization.h:84
static constexpr int MAX_LEVEL
MAX_LEVEL is the maximum supported HTM subdivision level.
Definition: HtmPixelization.h:53
RangeSet universe() const override
universe returns the set of all pixel indexes for this pixelization.
Definition: HtmPixelization.h:86
uint64_t index(UnitVector3d const &) const override
index computes the index of the pixel for v.
Definition: HtmPixelization.cc:170
std::string toString(uint64_t i) const override
toString converts the given pixel index to a human-readable string.
Definition: HtmPixelization.h:97
static std::string asString(uint64_t i)
Definition: HtmPixelization.cc:148
static int level(uint64_t i)
Definition: HtmPixelization.cc:110
std::unique_ptr< Region > pixel(uint64_t i) const override
Definition: HtmPixelization.h:91
static ConvexPolygon triangle(uint64_t i)
Definition: HtmPixelization.cc:123
HtmPixelization(int level)
Definition: HtmPixelization.cc:164
Definition: Pixelization.h:77
Definition: RangeSet.h:99
Definition: Region.h:79
Definition: UnitVector3d.h:55