LutMap.h

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/*
 * LSST Data Management System
 * Copyright 2017 AURA/LSST.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * 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 LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <https://www.lsstcorp.org/LegalNotices/>.
 */
#ifndef ASTSHIM_LUTMAP_H
#define ASTSHIM_LUTMAP_H
 
#include <memory>
 
#include "astshim/base.h"
#include "astshim/Mapping.h"
 
namespace ast {

class LutMap : public Mapping {
    friend class Object;
 
public:
    explicit LutMap(std::vector<double> const &lut, double start, double inc, std::string const &options = "")
            : Mapping(reinterpret_cast<AstMapping *>(
                      astLutMap(lut.size(), lut.data(), start, inc, "%s", options.c_str()))) {
        assertOK();
    }
 
    virtual ~LutMap() {}

    LutMap(LutMap const &) = default;
    LutMap(LutMap &&) = default;
    LutMap &operator=(LutMap const &) = delete;
    LutMap &operator=(LutMap &&) = default;

    std::shared_ptr<LutMap> copy() const { return std::static_pointer_cast<LutMap>(copyPolymorphic()); }

    double getLutEpsilon() const { return getD("LutEpsilon"); }

    int getLutInterp() const { return getI("LutInterp"); }
 
protected:
    virtual std::shared_ptr<Object> copyPolymorphic() const override {
        return copyImpl<LutMap, AstLutMap>();
    }

    explicit LutMap(AstLutMap *rawptr) : Mapping(reinterpret_cast<AstMapping *>(rawptr)) {
        if (!astIsALutMap(getRawPtr())) {
            std::ostringstream os;
            os << "this is a " << getClassName() << ", which is not a LutMap";
            throw std::invalid_argument(os.str());
        }
    }
};
 
}  // namespace ast
 
#endif