X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fviewer.hxx;h=7cd58adae583058a48911b57a9d553581ebba261;hb=01e0156b5dfd555ef6fad818e53b7cd474b04704;hp=c7bae2d4b40dc818eef0a3c1c8851b44d743bada;hpb=4d4cd1601205be27e12c0748e6eda5b8beed0dc8;p=flightgear.git diff --git a/src/Main/viewer.hxx b/src/Main/viewer.hxx index c7bae2d4b..7cd58adae 100644 --- a/src/Main/viewer.hxx +++ b/src/Main/viewer.hxx @@ -5,7 +5,7 @@ // partially rewritten by Jim Wilson jim@kelcomaine.com using interface // by David Megginson March 2002 // -// Copyright (C) 1997 - 2000 Curtis L. Olson - curt@flightgear.org +// Copyright (C) 1997 - 2000 Curtis L. Olson - http://www.flightgear.org/~curt // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as @@ -19,63 +19,68 @@ // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software -// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. // // $Id$ #ifndef _VIEWER_HXX -#define _VIEWER_HXX +#define _VIEWER_HXX +namespace flightgear +{ +class CameraGroup; +} -#ifndef __cplusplus -# error This library requires C++ -#endif +#include #include #include - -#include // plib include - -#include "fgfs.hxx" - +#include +#include #define FG_FOV_MIN 0.1 #define FG_FOV_MAX 179.9 +enum fgViewType { + FG_LOOKFROM = 0, + FG_LOOKAT = 1 +}; // Define a structure containing view information -class FGViewer : public FGSubsystem { +class FGViewer : public SGSubsystem { public: - enum fgViewType { - FG_RPH = 0, - FG_LOOKAT = 1, - FG_HPR = 2 - }; - enum fgScalingType { // nominal Field Of View actually applies to ... FG_SCALING_WIDTH, // window width - FG_SCALING_MAX, // max(width, height) + FG_SCALING_MAX // max(width, height) // FG_SCALING_G_MEAN, // geometric_mean(width, height) // FG_SCALING_INDEPENDENT // whole screen }; // Constructor - FGViewer( void ); + FGViewer( fgViewType Type, bool from_model, int from_model_index, + bool at_model, int at_model_index, + double damp_roll, double damp_pitch, double damp_heading, + double x_offset_m, double y_offset_m, double z_offset_m, + double heading_offset_deg, double pitch_offset_deg, + double roll_offset_deg, + double fov_deg, double aspect_ratio_multiplier, + double target_x_offset_m, double target_y_offset_m, + double target_z_offset_m, double near_m, bool internal ); // Destructor virtual ~FGViewer( void ); ////////////////////////////////////////////////////////////////////// - // Part 1: standard FGSubsystem implementation. + // Part 1: standard SGSubsystem implementation. ////////////////////////////////////////////////////////////////////// virtual void init (); virtual void bind (); virtual void unbind (); - void update (int dt); + void update (double dt); ////////////////////////////////////////////////////////////////////// @@ -85,29 +90,63 @@ public: virtual fgViewType getType() const { return _type; } virtual void setType( int type ); - // Reference geodetic position of view from position... - virtual double getLongitude_deg () const { return _lon_deg; } - virtual double getLatitude_deg () const { return _lat_deg; } - virtual double getAltitudeASL_ft () const { return _alt_ft; } - // Set individual coordinates for the view point position. - virtual void setLongitude_deg (double lon_deg); - virtual void setLatitude_deg (double lat_deg); - virtual void setAltitude_ft (double alt_ft); - // Set the geodetic position for the view point. + virtual bool getInternal() const { return _internal; } + virtual void setInternal( bool internal ); + + // Reference geodetic position of view from position... + // These are the actual aircraft position (pilot in + // pilot view, model in model view). + // FIXME: the model view position (ie target positions) + // should be in the model class. virtual void setPosition (double lon_deg, double lat_deg, double alt_ft); + const SGGeod& getPosition() const { return _position; } - // Reference geodetic target position... - virtual double getTargetLongitude_deg () const { return _target_lon_deg; } - virtual double getTargetLatitude_deg () const { return _target_lat_deg; } - virtual double getTargetAltitudeASL_ft () const { return _target_alt_ft; } - // Set individual coordinates for the Target point position. - virtual void setTargetLongitude_deg (double lon_deg); - virtual void setTargetLatitude_deg (double lat_deg); - virtual void setTargetAltitude_ft (double alt_ft); - // Set the geodetic position for the Target point. + // Reference geodetic target position... virtual void setTargetPosition (double lon_deg, double lat_deg, double alt_ft); + const SGGeod& getTargetPosition() const { return _target; } + + + + // Position offsets from reference + // These offsets position they "eye" in the scene according to a given + // location. For example in pilot view they are used to position the + // head inside the aircraft. + // Note that in pilot view these are applied "before" the orientation + // rotations (see below) so that the orientation rotations have the + // effect of the pilot staying in his seat and "looking out" in + // different directions. + // In chase view these are applied "after" the application of the + // orientation rotations listed below. This has the effect of the + // eye moving around and "looking at" the object (model) from + // different angles. + virtual SGVec3d getOffset_m () const { return _offset_m; } + virtual double getXOffset_m () const { return _offset_m.x(); } + virtual double getYOffset_m () const { return _offset_m.y(); } + virtual double getZOffset_m () const { return _offset_m.z(); } + virtual double getTargetXOffset_m () const { return _target_offset_m.x(); } + virtual double getTargetYOffset_m () const { return _target_offset_m.y(); } + virtual double getTargetZOffset_m () const { return _target_offset_m.z(); } + virtual void setXOffset_m (double x_offset_m); + virtual void setYOffset_m (double y_offset_m); + virtual void setZOffset_m (double z_offset_m); + virtual void setTargetXOffset_m (double x_offset_m); + virtual void setTargetYOffset_m (double y_offset_m); + virtual void setTargetZOffset_m (double z_offset_m); + virtual void setPositionOffsets (double x_offset_m, + double y_offset_m, + double z_offset_m); + + - // Refence orientation... + + // Reference orientation rotations... + // These are rotations that represent the plane attitude effect on + // the view (in Pilot view). IE The view frustrum rotates as the plane + // turns, pitches, and rolls. + // In model view (lookat/chaseview) these end up changing the angle that + // the eye is looking at the ojbect (ie the model). + // FIXME: the FGModel class should have its own version of these so that + // it can generate it's own model rotations. virtual double getRoll_deg () const { return _roll_deg; } virtual double getPitch_deg () const {return _pitch_deg; } virtual double getHeading_deg () const {return _heading_deg; } @@ -115,25 +154,39 @@ public: virtual void setPitch_deg (double pitch_deg); virtual void setHeading_deg (double heading_deg); virtual void setOrientation (double roll_deg, double pitch_deg, double heading_deg); - - // Position offsets from reference - virtual double getXOffset_m () const { return _x_offset_m; } - virtual double getYOffset_m () const { return _y_offset_m; } - virtual double getZOffset_m () const { return _z_offset_m; } - virtual void setXOffset_m (double x_offset_m); - virtual void setYOffset_m (double y_offset_m); - virtual void setZOffset_m (double z_offset_m); - virtual void setPositionOffsets (double x_offset_m, - double y_offset_m, - double z_offset_m); - - // Orientation offsets from reference + virtual double getTargetRoll_deg () const { return _target_roll_deg; } + virtual double getTargetPitch_deg () const {return _target_pitch_deg; } + virtual double getTargetHeading_deg () const {return _target_heading_deg; } + virtual void setTargetRoll_deg (double roll_deg); + virtual void setTargetPitch_deg (double pitch_deg); + virtual void setTargetHeading_deg (double heading_deg); + virtual void setTargetOrientation (double roll_deg, double pitch_deg, double heading_deg); + + + + + // Orientation offsets rotations from reference orientation. + // Goal settings are for smooth transition from prior + // offset when changing view direction. + // These offsets are in ADDITION to the orientation rotations listed + // above. + // In pilot view they are applied after the position offsets in order to + // give the effect of the pilot looking around. + // In lookat view they are applied before the position offsets so that + // the effect is the eye moving around looking at the object (ie the model) + // from different angles. virtual double getRollOffset_deg () const { return _roll_offset_deg; } virtual double getPitchOffset_deg () const { return _pitch_offset_deg; } virtual double getHeadingOffset_deg () const { return _heading_offset_deg; } + virtual double getGoalRollOffset_deg () const { return _goal_roll_offset_deg; } + virtual double getGoalPitchOffset_deg () const { return _goal_pitch_offset_deg; } + virtual double getGoalHeadingOffset_deg () const {return _goal_heading_offset_deg; } virtual void setRollOffset_deg (double roll_offset_deg); virtual void setPitchOffset_deg (double pitch_offset_deg); virtual void setHeadingOffset_deg (double heading_offset_deg); + virtual void setGoalRollOffset_deg (double goal_roll_offset_deg); + virtual void setGoalPitchOffset_deg (double goal_pitch_offset_deg); + virtual void setGoalHeadingOffset_deg (double goal_heading_offset_deg); virtual void setOrientationOffsets (double roll_offset_deg, double heading_offset_deg, double pitch_offset_deg); @@ -146,231 +199,155 @@ public: // Vectors and positions... - // Get zero view_pos - virtual float * get_view_pos() {if ( _dirty ) { recalc(); } return view_pos; } - // Get the absolute view position in fgfs coordinates. - virtual double * get_absolute_view_pos (); - // Get zero elev - virtual float * get_zero_elev() {if ( _dirty ) { recalc(); } return zero_elev; } - // Get world up vector - virtual float *get_world_up() {if ( _dirty ) { recalc(); } return world_up; } - // Get the relative (to scenery center) view position in fgfs coordinates. - virtual float * getRelativeViewPos (); - // Get the absolute zero-elevation view position in fgfs coordinates. - virtual float * getZeroElevViewPos (); - // Get surface east vector - virtual float *get_surface_east() { if ( _dirty ) { recalc(); } return surface_east; } - // Get surface south vector - virtual float *get_surface_south() {if ( _dirty ) { recalc(); } return surface_south; } - - // Matrices... - virtual const sgVec4 *get_VIEW() { if ( _dirty ) { recalc(); } return VIEW; } - virtual const sgVec4 *get_VIEW_ROT() { if ( _dirty ) { recalc(); } return VIEW_ROT; } - virtual const sgVec4 *get_UP() { if ( _dirty ) { recalc(); } return UP; } - // (future?) - // virtual double get_ground_elev() { if ( _dirty ) { recalc(); } return ground_elev; } + const SGVec3d& get_view_pos() { if ( _dirty ) { recalc(); } return _absolute_view_pos; } + const SGVec3d& getViewPosition() { if ( _dirty ) { recalc(); } return _absolute_view_pos; } + const SGQuatd& getViewOrientation() { if ( _dirty ) { recalc(); } return mViewOrientation; } + const SGQuatd& getViewOrientationOffset() { if ( _dirty ) { recalc(); } return mViewOffsetOr; } + ////////////////////////////////////////////////////////////////////// + // Part 4: View and frustrum data setters and getters + ////////////////////////////////////////////////////////////////////// + + virtual void set_fov( double fov_deg ) { + _fov_deg = fov_deg; + } + virtual double get_fov() const { return _fov_deg; } + virtual double get_h_fov(); // Get horizontal fov, in degrees. + virtual double get_v_fov(); // Get vertical fov, in degrees. + + virtual void set_aspect_ratio( double r ) { + _aspect_ratio = r; + } + virtual double get_aspect_ratio() const { return _aspect_ratio; } + virtual void set_aspect_ratio_multiplier( double m ) { + _aspect_ratio_multiplier = m; + } + virtual double get_aspect_ratio_multiplier() const { + return _aspect_ratio_multiplier; + } + + virtual double getNear_m () const { return _ground_level_nearplane_m; } + inline void setNear_m (double near_m) { + _ground_level_nearplane_m = near_m; + } + + ////////////////////////////////////////////////////////////////////// + // Part 5: misc setters and getters + ////////////////////////////////////////////////////////////////////// + + inline void set_dirty() { _dirty = true; } + inline void set_clean() { _dirty = false; } + private: + ////////////////////////////////////////////////////////////////// + // private data // + ////////////////////////////////////////////////////////////////// + // flag forcing a recalc of derived view parameters bool _dirty; - void recalc (); - void recalcPositionVectors (double lon_deg, double lat_deg, double alt_ft) const; + SGQuatd mViewOrientation; + SGQuatd mViewOffsetOr; + SGVec3d _absolute_view_pos; - mutable sgdVec3 _absolute_view_pos; - mutable sgVec3 _relative_view_pos; - mutable sgVec3 _zero_elev_view_pos; - - double _lon_deg; - double _lat_deg; - double _alt_ft; - double _target_lon_deg; - double _target_lat_deg; - double _target_alt_ft; + SGGeod _position; + SGGeod _target; double _roll_deg; double _pitch_deg; double _heading_deg; - - // Position offsets from center of gravity. The X axis is positive + double _target_roll_deg; + double _target_pitch_deg; + double _target_heading_deg; + + SGVec3d _dampTarget; ///< current target value we are damping towards + SGVec3d _dampOutput; ///< current output of damping filter + SGVec3d _dampFactor; ///< weighting of the damping filter + + // Position offsets from FDM origin. The X axis is positive // out the tail, Y is out the right wing, and Z is positive up. // distance in meters - double _x_offset_m; - double _y_offset_m; - double _z_offset_m; + SGVec3d _offset_m; + + // Target offsets from FDM origin (for "lookat" targets) The X + // axis is positive out the tail, Y is out the right wing, and Z + // is positive up. distance in meters + SGVec3d _target_offset_m; - // orientation offsets from reference + + // orientation offsets from reference (_goal* are for smoothed transitions) double _roll_offset_deg; double _pitch_offset_deg; double _heading_offset_deg; + double _goal_roll_offset_deg; + double _goal_pitch_offset_deg; + double _goal_heading_offset_deg; -protected: + // used to set nearplane when at ground level for this view + double _ground_level_nearplane_m; fgViewType _type; - fgScalingType scalingType; + fgScalingType _scaling_type; - // the nominal field of view (angle, in degrees) - double fov; + // internal view (e.g. cockpit) flag + bool _internal; - // ratio of window width and height; height = width * aspect_ratio - double aspect_ratio; + // view is looking from a model + bool _from_model; + int _from_model_index; // number of model (for multi model) - bool reverse_view_offset; + // view is looking at a model + bool _at_model; + int _at_model_index; // number of model (for multi model) - // the goal view offset angle (used for smooth view changes) - double goal_view_offset; - - double goal_view_tilt; - - // view position in opengl world coordinates (this is the - // abs_view_pos translated to scenery.center) - sgVec3 view_pos; - - // radius to sea level from center of the earth (m) - double sea_level_radius; - - // cartesion coordinates of current lon/lat if at sea level - // translated to scenery.center - sgVec3 zero_elev; - - // height ASL of the terrain for our current view position - // (future?) double ground_elev; - - // surface vector heading south - sgVec3 surface_south; - - // surface vector heading east (used to unambiguously align sky - // with sun) - sgVec3 surface_east; - - // world up vector (normal to the plane tangent to the earth's - // surface at the spot we are directly above - sgVec3 world_up; - - // sg versions of our friendly matrices - sgMat4 VIEW, VIEW_ROT, UP; - - // up vector for the view (usually point straight up through the - // top of the aircraft - sgVec3 view_up; - - // the vector pointing straight out the nose of the aircraft - sgVec3 view_forward; - - // Transformation matrix for the view direction offset relative to - // the AIRCRAFT matrix - sgMat4 VIEW_OFFSET; - - // sg versions of our friendly matrices (from lookat) - sgMat4 LOCAL, TRANS, LARC_TO_SSG; - - inline void set_dirty() { _dirty = true; } - inline void set_clean() { _dirty = false; } - - // from lookat - void fgMakeLookAtMat4 ( sgMat4 dst, const sgVec3 eye, const sgVec3 center, - const sgVec3 up ); - - // from rph - void fgMakeViewRot( sgMat4 dst, const sgMat4 m1, const sgMat4 m2 ); - void fgMakeLOCAL( sgMat4 dst, const double Theta, - const double Phi, const double Psi); - - -public: + // the nominal field of view (angle, in degrees) + double _fov_deg; + // Ratio of window width and height; height = width * + // aspect_ratio. This value is automatically calculated based on + // window dimentions. + double _aspect_ratio; - ////////////////////////////////////////////////////////////////////// - // setter functions - ////////////////////////////////////////////////////////////////////// + // default = 1.0, this value is user configurable and is + // multiplied into the aspect_ratio to get the actual vertical fov + double _aspect_ratio_multiplier; - inline void set_fov( double fov_deg ) { - fov = fov_deg; - } + // camera group controled by this view + osg::ref_ptr _cameraGroup; + ////////////////////////////////////////////////////////////////// + // private functions // + ////////////////////////////////////////////////////////////////// - inline void set_aspect_ratio( double r ) { - aspect_ratio = r; - } - inline void inc_view_offset( double amt ) { + void recalc (); + void recalcLookFrom(); + void recalcLookAt(); + + void setDampTarget(double h, double p, double r); + void getDampOutput(double& roll, double& pitch, double& heading); + + void updateDampOutput(double dt); + + // add to _heading_offset_deg + inline void incHeadingOffset_deg( double amt ) { set_dirty(); _heading_offset_deg += amt; } - inline void set_goal_view_offset( double a) { - set_dirty(); - goal_view_offset = a; - while ( goal_view_offset < 0.0 ) { - goal_view_offset += 360; - } - while ( goal_view_offset > 360 ) { - goal_view_offset -= 360; - } - } - inline void set_reverse_view_offset( bool val ) { - reverse_view_offset = val; - } - inline void inc_view_tilt( double amt ) { + + // add to _pitch_offset_deg + inline void incPitchOffset_deg( double amt ) { set_dirty(); _pitch_offset_deg += amt; } - inline void set_goal_view_tilt( double a) { - set_dirty(); - goal_view_tilt = a; - while ( goal_view_tilt < -90 ) { - goal_view_tilt = -90.0; - } - while ( goal_view_tilt > 90.0 ) { - goal_view_tilt = 90.0; - } - } - inline void set_sea_level_radius( double r ) { - // data should be in meters from the center of the earth - set_dirty(); - sea_level_radius = r; - } - /* from lookat */ - inline void set_view_forward( sgVec3 vf ) { + // add to _roll_offset_deg + inline void incRollOffset_deg( double amt ) { set_dirty(); - sgCopyVec3( view_forward, vf ); + _roll_offset_deg += amt; } - inline void set_view_up( sgVec3 vf ) { - set_dirty(); - sgCopyVec3( view_up, vf ); - } - /* end from lookat */ - - - ////////////////////////////////////////////////////////////////////// - // accessor functions - ////////////////////////////////////////////////////////////////////// - inline int get_type() const { return _type ; } - inline int is_a( int t ) const { return get_type() == t ; } - inline bool is_dirty() const { return _dirty; } - inline double get_fov() const { return fov; } - inline double get_aspect_ratio() const { return aspect_ratio; } - inline bool get_reverse_view_offset() const { return reverse_view_offset; } - inline double get_goal_view_offset() const { return goal_view_offset; } - inline double get_goal_view_tilt() const { return goal_view_tilt; } - inline double get_sea_level_radius() const { return sea_level_radius; } - // Get horizontal field of view angle, in degrees. - double get_h_fov(); - // Get vertical field of view angle, in degrees. - double get_v_fov(); - - /* from lookat */ - inline float *get_view_forward() { return view_forward; } - inline float *get_view_up() { return view_up; } - /* end from lookat */ - - ////////////////////////////////////////////////////////////////////// - // derived values accessor functions - ////////////////////////////////////////////////////////////////////// }; #endif // _VIEWER_HXX - -