#endif
#include <simgear/compiler.h>
-#include <simgear/math/point3d.hxx>
-#include <simgear/timing/sg_time.hxx>
-
-#include <list>
#include <plib/sg.h> // plib include
-#include <FDM/flight.hxx>
-#include <Time/light.hxx>
-
-
-FG_USING_STD(list);
-
#define FG_FOV_MIN 0.1
#define FG_FOV_MAX 179.9
// Define a structure containing view information
class FGViewer {
+public:
+
+ enum fgViewType {
+ FG_RPH = 0,
+ FG_LOOKAT = 1,
+ FG_HPR = 2
+ };
+
private:
// flag forcing a recalc of derived view parameters
bool dirty;
-
+
+protected:
+
+ fgViewType _type;
+
+ // the field of view in the x (width) direction
+ double fov;
+
+ // ratio of x and y fov's; fov(y) = fov(x) * win_ratio
+ double win_ratio;
+
// the current view offset angle from forward (rotated about the
// view_up vector)
double view_offset;
+ bool reverse_view_offset;
// the goal view offset angle (used for smooth view changes)
double goal_view_offset;
// geodetic view position
- Point3D geod_view_pos;
-
- // radius to sea level from center of the earth (m)
- double sea_level_radius;
+ sgdVec3 geod_view_pos;
// absolute view position in earth coordinates
- Point3D abs_view_pos;
+ sgdVec3 abs_view_pos;
// view position in opengl world coordinates (this is the
// abs_view_pos translated to scenery.center)
- Point3D view_pos;
-
- // pilot offset from center of gravity. The X axis is positive
- // out the tail, Y is out the right wing, and Z is positive up.
- // Distances in meters of course.
- sgVec3 pilot_offset;
+ sgVec3 view_pos;
- // view orientation (heading, pitch, roll)
- sgVec3 hpr;
+ // 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
- Point3D cur_zero_elev;
+ sgVec3 zero_elev;
- // vector in cartesian coordinates from current position to the
- // postion on the earth's surface the sun is directly over
- sgVec3 to_sun;
+ // height ASL of the terrain for our current view position
+ // (future?) double ground_elev;
- // surface direction to go to head towards sun
- sgVec3 surface_to_sun;
-
- // vector in cartesian coordinates from current position to the
- // postion on the earth's surface the moon is directly over
- sgVec3 to_moon;
-
- // surface direction to go to head towards moon
- sgVec3 surface_to_moon;
+ // pilot offset from center of gravity. The X axis is positive
+ // out the tail, Y is out the right wing, and Z is positive up.
+ // Distances in meters of course.
+ sgVec3 pilot_offset;
// surface vector heading south
sgVec3 surface_south;
// with sun)
sgVec3 surface_east;
- // local up vector (normal to the plane tangent to the earth's
+ // world up vector (normal to the plane tangent to the earth's
// surface at the spot we are directly above
- sgVec3 local_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;
+ sgVec3 world_up;
// sg versions of our friendly matrices
- sgMat4 LOCAL, UP, VIEW_ROT, TRANS, VIEW, LARC_TO_SSG;
+ sgMat4 VIEW, VIEW_ROT, UP;
+
+ inline void set_dirty() { dirty = true; }
+ inline void set_clean() { dirty = false; }
// Update the view volume, position, and orientation
- void update();
+ virtual void update() = 0;
public:
FGViewer( void );
// Destructor
- ~FGViewer( void );
-
- // Initialize a view class
- void init( void );
-
- // Transform a vector from world coordinates to the local plane
- void CurrentNormalInLocalPlane(sgVec3 dst, sgVec3 src);
+ virtual ~FGViewer( void );
//////////////////////////////////////////////////////////////////////
// setter functions
//////////////////////////////////////////////////////////////////////
- inline void set_geod_view_pos( double lon, double lat, double alt ) {
- // data should be in radians and meters asl
- dirty = true;
- // cout << "set_geod_view_pos = " << lon << ", " << lat << ", " << alt
- // << endl;
- geod_view_pos = Point3D( lon, lat, alt );
- }
- inline void set_sea_level_radius( double r ) {
- // data should be in meters from the center of the earth
- dirty = true;
- sea_level_radius = r;
- }
- inline void set_hpr( double h, double p, double r ) {
- // data should be in radians
- dirty = true;
- sgSetVec3( hpr, h, p, r );
- }
- inline void set_pilot_offset( float x, float y, float z ) {
- dirty = true;
- sgSetVec3( pilot_offset, x, y, z );
- }
+ inline void set_fov( double amount ) { fov = amount; }
+ inline void set_win_ratio( double r ) { win_ratio = r; }
inline void set_view_offset( double a ) {
- dirty = true;
+ set_dirty();
view_offset = a;
}
inline void inc_view_offset( double amt ) {
- dirty = true;
+ set_dirty();
view_offset += amt;
}
inline void set_goal_view_offset( double a) {
- dirty = true;
+ set_dirty();
goal_view_offset = a;
+ while ( goal_view_offset < 0 ) {
+ goal_view_offset += 360.0;
+ }
+ while ( goal_view_offset > 360.0 ) {
+ goal_view_offset -= 360.0;
+ }
+ }
+ inline void set_reverse_view_offset( bool val ) {
+ reverse_view_offset = val;
+ }
+ inline void set_geod_view_pos( double lon, double lat, double alt ) {
+ // data should be in radians and meters asl
+ set_dirty();
+ // cout << "set_geod_view_pos = " << lon << ", " << lat << ", " << alt
+ // << endl;
+ sgdSetVec3( geod_view_pos, lon, lat, alt );
+ }
+ inline void set_pilot_offset( float x, float y, float z ) {
+ set_dirty();
+ sgSetVec3( pilot_offset, x, y, z );
+ }
+ 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;
}
//////////////////////////////////////////////////////////////////////
// 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_win_ratio() const { return win_ratio; }
inline double get_view_offset() const { return view_offset; }
+ 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_geod_view_pos() { return geod_view_pos; }
inline float *get_pilot_offset() { return pilot_offset; }
inline double get_sea_level_radius() const { return sea_level_radius; }
- inline float *get_hpr() { return hpr; }
//////////////////////////////////////////////////////////////////////
// derived values accessor functions
//////////////////////////////////////////////////////////////////////
- inline Point3D get_abs_view_pos() {
+ inline double *get_abs_view_pos() {
if ( dirty ) { update(); }
return abs_view_pos;
}
- inline Point3D get_view_pos() {
+ inline float *get_view_pos() {
if ( dirty ) { update(); }
return view_pos;
}
- inline Point3D get_cur_zero_elev() {
+ inline float *get_zero_elev() {
if ( dirty ) { update(); }
- return cur_zero_elev;
+ return zero_elev;
}
+ // (future?)
+ // inline double get_ground_elev() {
+ // if ( dirty ) { update(); }
+ // return ground_elev;
+ // }
inline float *get_surface_south() {
if ( dirty ) { update(); }
return surface_south;
if ( dirty ) { update(); }
return surface_east;
}
- inline float *get_local_up() {
+ inline float *get_world_up() {
if ( dirty ) { update(); }
- return local_up;
- }
- inline float *get_view_forward() {
- if ( dirty ) { update(); }
- return view_forward;
+ return world_up;
}
inline const sgVec4 *get_VIEW() {
if ( dirty ) { update(); }
if ( dirty ) { update(); }
return VIEW_ROT;
}
-
- //////////////////////////////////////////////////////////////////////
- // need to fix these
- //////////////////////////////////////////////////////////////////////
- inline float *get_to_sun() { return to_sun; }
- inline void set_to_sun( float x, float y, float z ) {
- sgSetVec3( to_sun, x, y, z );
- }
- inline float *get_surface_to_sun() { return surface_to_sun; }
- inline void set_surface_to_sun( float x, float y, float z) {
- sgSetVec3( surface_to_sun, x, y, z );
- }
- inline float *get_to_moon() { return to_moon; }
- inline void set_to_moon( float x, float y, float z) {
- sgSetVec3( to_moon, x, y, z );
- }
- inline float *get_surface_to_moon() { return surface_to_moon; }
- inline void set_surface_to_moon( float x, float y, float z) {
- sgSetVec3( surface_to_moon, x, y, z );
+ inline const sgVec4 *get_UP() {
+ if ( dirty ) { update(); }
+ return UP;
}
};
projects / flightgear.git / blobdiff