107 lines
2.5 KiB
C++
107 lines
2.5 KiB
C++
// frametree.h
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//
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// Reference frame tree.
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//
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// Copyright (C) 2008, the Celestia Development Team
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// Initial version by Chris Laurel, claurel@gmail.com
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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_FRAMETREE_H_
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#define _CELENGINE_FRAMETREE_H_
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#include <memory>
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#include <vector>
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#include <cstddef>
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#include "frame.h"
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#include "timelinephase.h"
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class Star;
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class Body;
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class FrameTree
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{
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public:
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FrameTree(Star*);
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FrameTree(Body*);
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~FrameTree();
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/*! Return the star that this tree is associated with; it will be
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* nullptr for frame trees associated with solar system bodies.
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*/
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Star* getStar() const
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{
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return starParent;
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}
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const ReferenceFrame::SharedConstPtr &getDefaultReferenceFrame() const;
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void addChild(const TimelinePhase::SharedConstPtr &phase);
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void removeChild(const TimelinePhase::SharedConstPtr &phase);
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const TimelinePhase::SharedConstPtr &getChild(unsigned int n) const;
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unsigned int childCount() const;
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void markChanged();
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void markUpdated();
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void recomputeBoundingSphere();
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bool isRoot() const
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{
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return bodyParent == nullptr;
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}
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bool updateRequired() const
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{
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return m_changed;
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}
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/*! Get the radius of a sphere large enough to contain all
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* objects in the tree.
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*/
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double boundingSphereRadius() const
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{
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return m_boundingSphereRadius;
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}
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/*! Get the radius of the largest body in the tree.
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*/
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double maxChildRadius() const
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{
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return m_maxChildRadius;
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}
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/*! Return whether any of the children of this frame
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* are secondary illuminators.
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*/
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bool containsSecondaryIlluminators() const
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{
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return m_containsSecondaryIlluminators;
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}
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/*! Return a bitmask with the classifications of all children
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* in this tree.
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*/
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int childClassMask() const
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{
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return m_childClassMask;
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}
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private:
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Star* starParent;
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Body* bodyParent;
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std::vector<TimelinePhase::SharedConstPtr> children;
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double m_boundingSphereRadius{ 0.0 };
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double m_maxChildRadius{ 0.0 };
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bool m_containsSecondaryIlluminators{ false };
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bool m_changed{ false };
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int m_childClassMask{ 0 };
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ReferenceFrame::SharedConstPtr defaultFrame;
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};
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#endif // _CELENGINE_FRAMETREE_H_
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