108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
// selection.h
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//
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// Copyright (C) 2001, Chris Laurel <claurel@shatters.net>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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#ifndef _CELENGINE_SELECTION_H_
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#define _CELENGINE_SELECTION_H_
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#include <string>
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#include <celengine/univcoord.h>
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#include <Eigen/Core>
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class CatEntry;
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class Star;
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class Body;
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class Location;
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class DeepSkyObject;
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class Selection
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{
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public:
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enum Type
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{
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Type_Nil,
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Type_Star,
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Type_Body,
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Type_DeepSky,
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Type_Location,
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Type_Generic
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};
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Selection() = default;
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Selection(CatEntry *cat) : type(Type_Generic), obj(cat) { checkNull(); };
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Selection(Star* star) : type(Type_Star), obj(star) { checkNull(); };
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Selection(Body* body) : type(Type_Body), obj(body) { checkNull(); };
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Selection(DeepSkyObject* deepsky) : type(Type_DeepSky), obj(deepsky) {checkNull(); };
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Selection(Location* location) : type(Type_Location), obj(location) { checkNull(); };
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Selection(const Selection& sel) : type(sel.type), obj(sel.obj) {};
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~Selection() = default;
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bool empty() const { return type == Type_Nil; }
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double radius() const;
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UniversalCoord getPosition(double t) const;
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Eigen::Vector3d getVelocity(double t) const;
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std::string getName(bool i18n = false) const;
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Selection parent() const;
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bool isVisible() const;
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Star* star() const
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{
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return type == Type_Star ? static_cast<Star*>(obj) : nullptr;
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}
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Body* body() const
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{
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return type == Type_Body ? static_cast<Body*>(obj) : nullptr;
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}
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DeepSkyObject* deepsky() const
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{
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return type == Type_DeepSky ? static_cast<DeepSkyObject*>(obj) : nullptr;
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}
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Location* location() const
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{
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return type == Type_Location ? static_cast<Location*>(obj) : nullptr;
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}
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CatEntry *catEntry() const
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{
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return type != Type_Nil ? static_cast<CatEntry*>(obj) : nullptr;
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}
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Type getType() const { return type; }
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private:
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Type type { Type_Nil };
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void* obj { nullptr };
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void checkNull() { if (obj == nullptr) type = Type_Nil; }
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friend bool operator==(const Selection& s0, const Selection& s1);
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friend bool operator!=(const Selection& s0, const Selection& s1);
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};
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inline bool operator==(const Selection& s0, const Selection& s1)
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{
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return s0.type == s1.type && s0.obj == s1.obj;
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}
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inline bool operator!=(const Selection& s0, const Selection& s1)
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{
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return s0.type != s1.type || s0.obj != s1.obj;
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}
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/*inline bool operator<(const Selection& s0, const Selection& s1)
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{
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return s0.type < s1.type || s0.obj < s1.obj;
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}*/
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#endif // _CELENGINE_SELECTION_H_
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