98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
// model-mgr.hxx - manage user-specified 3D models.
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// Written by David Megginson, started 2002.
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//
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// This file is in the Public Domain, and comes with no warranty.
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#ifndef __MODELMGR_HXX
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#define __MODELMGR_HXX 1
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <vector>
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#include <simgear/compiler.h> // for SG_USING_STD
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#include <Main/fgfs.hxx> // for FGSubsystem
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SG_USING_STD(vector);
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// Don't pull in headers, since we don't need them here.
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class ssgSelector;
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class SGPropertyNode;
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class SGModelPlacement;
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/**
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* Manage a list of user-specified models.
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*/
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class FGModelMgr : public FGSubsystem
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{
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public:
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/**
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* A dynamically-placed model using properties.
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*
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* The model manager uses the property nodes to update the model's
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* position and orientation; any of the property node pointers may
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* be set to zero to avoid update. Normally, a caller should
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* load the model by instantiating SGModelPlacement with the path
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* to the model or its XML wrapper, then assign any relevant
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* property node pointers.
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*
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* @see SGModelPlacement
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* @see FGModelMgr#add_instance
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*/
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struct Instance
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{
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Instance ();
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virtual ~Instance ();
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SGModelPlacement * model;
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SGPropertyNode * lon_deg_node;
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SGPropertyNode * lat_deg_node;
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SGPropertyNode * elev_ft_node;
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SGPropertyNode * roll_deg_node;
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SGPropertyNode * pitch_deg_node;
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SGPropertyNode * heading_deg_node;
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};
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FGModelMgr ();
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virtual ~FGModelMgr ();
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virtual void init ();
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virtual void bind ();
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virtual void unbind ();
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virtual void update (double dt);
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/**
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* Add an instance of a dynamic model to the manager.
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*
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* NOTE: pointer ownership is transferred to the model manager!
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*
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* The caller is responsible for setting up the Instance structure
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* as required. The model manager will continuously update the
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* location and orientation of the model based on the current
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* values of the properties.
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*/
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virtual void add_instance (Instance * instance);
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/**
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* Remove an instance of a dynamic model from the manager.
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*
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* NOTE: the manager will delete the instance as well.
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*/
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virtual void remove_instance (Instance * instance);
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virtual void draw ();
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private:
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vector<Instance *> _instances;
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ssgSelector * _selector;
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};
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#endif // __MODELMGR_HXX
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