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This new method can be implemented more efficiently for CompoundRegion than `relate` which returns superset of region relations.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| /* | ||
| * This file is part of sphgeom. | ||
| * | ||
| * Developed for the LSST Data Management System. | ||
| * This product includes software developed by the LSST Project | ||
| * (http://www.lsst.org). | ||
| * See the COPYRIGHT file at the top-level directory of this distribution | ||
| * for details of code ownership. | ||
| * | ||
| * This software is dual licensed under the GNU General Public License and also | ||
| * under a 3-clause BSD license. Recipients may choose which of these licenses | ||
| * to use; please see the files gpl-3.0.txt and/or bsd_license.txt, | ||
| * respectively. If you choose the GPL option then the following text applies | ||
| * (but note that there is still no warranty even if you opt for BSD instead): | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| #ifndef LSST_SPHGEOM_TRISTATE_H_ | ||
| #define LSST_SPHGEOM_TRISTATE_H_ | ||
|
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| /// \file | ||
| /// \brief This file declares a class for representing tri-state values. | ||
|
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| #include <iostream> | ||
| #include <stdexcept> | ||
|
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|
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| namespace lsst { | ||
| namespace sphgeom { | ||
|
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| /// `TriState` represents a boolean value with additional `unknown` state. | ||
| /// Instances of this class can be compared to booleans `true` and `false`, | ||
| /// when the state is unknown, comparisons will return `false`. | ||
| class TriState { | ||
| public: | ||
| /// Construct value in unknown state. | ||
| TriState() {} | ||
|
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| /// COnstruct value in a known state. | ||
| explicit TriState(bool value) : _known(true), _value(value) {} | ||
|
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| TriState& operator=(TriState const & other) = default; | ||
|
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| /// @brief Compare this tri-state value with other tri-state value. | ||
| /// @param other Tri-state value to compare to. | ||
| /// @return True is returned when both states are unknown or when both | ||
| /// states are known and values are equal, false returned otherwise. | ||
| bool operator==(TriState const & other) const { | ||
| if (not _known) { | ||
| return not other._known; | ||
| } else { | ||
| return other._known && _value == other._value; | ||
| } | ||
| } | ||
|
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| bool operator!=(TriState const & other) const { | ||
| return not this->operator==(other); | ||
| } | ||
|
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| /// @brief Compare this tri-state value with a boolean. | ||
| /// @param value Boolean value to compare to. | ||
| /// @return Return true | ||
| bool operator==(bool value) const { | ||
| return _known && _value == value; | ||
| } | ||
|
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| bool operator!=(bool value) const { | ||
| return not this->operator==(value); | ||
| } | ||
|
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| /// @brief Check whether the state is known. | ||
| /// @return True is returned when state is known. | ||
| bool known() const { return _known; } | ||
|
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| private: | ||
| bool _known = false; | ||
| bool _value = false; | ||
| }; | ||
|
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| inline | ||
| std::ostream & operator<<(std::ostream & stream, TriState const & value) { | ||
| const char* str = "unknown"; | ||
| if (value == true) { | ||
| str = "true"; | ||
| } else if (value == false) { | ||
| str = "false"; | ||
| } | ||
| return stream << str; | ||
| } | ||
|
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| }} // namespace lsst::sphgeom | ||
|
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| #endif // LSST_SPHGEOM_TRISTATE_H_ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /* | ||
| * This file is part of sphgeom. | ||
| * | ||
| * Developed for the LSST Data Management System. | ||
| * This product includes software developed by the LSST Project | ||
| * (http://www.lsst.org). | ||
| * See the COPYRIGHT file at the top-level directory of this distribution | ||
| * for details of code ownership. | ||
| * | ||
| * This software is dual licensed under the GNU General Public License and also | ||
| * under a 3-clause BSD license. Recipients may choose which of these licenses | ||
| * to use; please see the files gpl-3.0.txt and/or bsd_license.txt, | ||
| * respectively. If you choose the GPL option then the following text applies | ||
| * (but note that there is still no warranty even if you opt for BSD instead): | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
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||
| #ifndef LSST_SPHGEOM_PYTHON_TRISTATE_H_ | ||
| #define LSST_SPHGEOM_PYTHON_TRISTATE_H_ | ||
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| #include "pybind11/pybind11.h" | ||
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| #include "../TriState.h" | ||
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| namespace pybind11 { | ||
| namespace detail { | ||
|
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| /// This struct is a partial specialization of type_caster for | ||
| /// for lsst::sphgeom::TriState. | ||
| /// | ||
| /// It maps between TriState and Python bool or None, avoiding the need to | ||
| /// wrap the former. This header should be included by all wrappers for | ||
| /// functions that consume or return TriState instances. | ||
| template <> | ||
| struct type_caster<lsst::sphgeom::TriState> { | ||
| public: | ||
| // Declare a local variable `value` of type lsst::sphgeom::TriState, | ||
| // and describe the TriState type as an "bool | None" in pybind11-generated | ||
| // docstrings. | ||
| PYBIND11_TYPE_CASTER(lsst::sphgeom::TriState, _("bool | None")); | ||
|
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| // Convert a Python object to an lsst::sphgeom::TriState. | ||
| bool load(handle src, bool) { | ||
| if (src.is_none()) { | ||
| value = lsst::sphgeom::TriState(); | ||
| } else { | ||
| value = lsst::sphgeom::TriState(src.cast<bool>()); | ||
| } | ||
| return true; | ||
| } | ||
|
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| // Convert an lsst::sphgeom::TriState to a Python integer. | ||
| static handle cast(lsst::sphgeom::TriState src, return_value_policy, | ||
| handle) { | ||
|
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| if (src == true) { | ||
| Py_RETURN_TRUE; | ||
| } else if (src == false) { | ||
| Py_RETURN_FALSE; | ||
| } | ||
| Py_RETURN_NONE; | ||
| } | ||
| }; | ||
|
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| } // detail | ||
| } // pybind11 | ||
|
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| #endif // LSST_SPHGEOM_PYTHON_TRISTATE_H_ |
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