1 // viewmgr.hxx -- class for managing all the views in the flightgear world.
3 // Written by Curtis Olson, started October 2000.
5 // Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
30 #include <simgear/compiler.h>
31 #include <simgear/structure/subsystem_mgr.hxx>
32 #include <simgear/props/props.hxx>
33 #include <simgear/math/SGMath.hxx>
38 typedef SGSharedPtr<FGViewer> FGViewerPtr;
40 // Define a structure containing view information
41 class FGViewMgr : public SGSubsystem
54 virtual void unbind ();
55 virtual void update (double dt);
56 virtual void reinit ();
59 inline int size() const { return views.size(); }
60 inline int get_current() const { return current; }
62 FGViewer *get_current_view();
63 const FGViewer *get_current_view() const;
65 FGViewer *get_view( int i );
66 const FGViewer *get_view( int i ) const;
68 FGViewer *next_view();
69 FGViewer *prev_view();
74 void add_view( FGViewer * v );
79 list<const char*> tied_props;
86 // callbacks in manager to access viewer methods
87 double getViewHeadingOffset_deg () const;
88 void setViewHeadingOffset_deg (double offset);
89 double getViewGoalHeadingOffset_deg () const;
90 void setViewGoalHeadingOffset_deg (double offset);
91 double getViewPitchOffset_deg () const;
92 void setViewPitchOffset_deg (double tilt);
93 double getGoalViewPitchOffset_deg () const;
94 void setGoalViewRollOffset_deg (double tilt);
95 double getViewRollOffset_deg () const;
96 void setViewRollOffset_deg (double tilt);
97 double getGoalViewRollOffset_deg () const;
98 void setGoalViewPitchOffset_deg (double tilt);
99 double getViewXOffset_m () const;
100 void setViewXOffset_m (double x);
101 double getViewYOffset_m () const;
102 void setViewYOffset_m (double y);
103 double getViewZOffset_m () const;
104 void setViewZOffset_m (double z);
105 double getViewTargetXOffset_m () const;
106 void setViewTargetXOffset_m (double x);
107 double getViewTargetYOffset_m () const;
108 void setViewTargetYOffset_m (double y);
109 double getViewTargetZOffset_m () const;
110 void setViewTargetZOffset_m (double z);
111 double getFOV_deg () const;
112 void setFOV_deg (double fov);
113 double getARM_deg () const; // Aspect Ratio Multiplier
114 void setARM_deg (double fov);
115 double getNear_m () const;
116 void setNear_m (double near_m);
117 void setViewAxisLong (double axis);
118 void setViewAxisLat (double axis);
119 int getView () const;
120 void setView (int newview);
122 // quaternion accessors, for debugging:
123 double getCurrentViewOrientation_w() const;
124 double getCurrentViewOrientation_x() const;
125 double getCurrentViewOrientation_y() const;
126 double getCurrentViewOrientation_z() const;
127 double getCurrentViewOrOffset_w() const;
128 double getCurrentViewOrOffset_x() const;
129 double getCurrentViewOrOffset_y() const;
130 double getCurrentViewOrOffset_z() const;
131 double getCurrentViewFrame_w() const;
132 double getCurrentViewFrame_x() const;
133 double getCurrentViewFrame_y() const;
134 double getCurrentViewFrame_z() const;
136 bool stationary () const;
138 // copies current offset settings to current-view path...
139 void copyToCurrent ();
142 SGPropertyNode_ptr view_number;
143 vector<SGPropertyNode_ptr> config_list;
144 typedef std::vector<FGViewerPtr> viewer_list;
146 SGVec3d abs_viewer_position;
149 SGQuatd current_view_orientation, current_view_or_offset;
155 // This takes the conventional aviation XYZ body system
156 // i.e. x=forward, y=starboard, z=bottom
157 // which is widely used in FGFS
158 // and rotates it into the OpenGL camera system
159 // i.e. Xprime=starboard, Yprime=top, Zprime=aft.
160 inline const SGQuatd fsb2sta()
162 return SGQuatd(-0.5, -0.5, 0.5, 0.5);
165 #endif // _VIEWMGR_HXX