#endif
#include <simgear/compiler.h>
-#include <simgear/timing/sg_time.hxx>
#include <plib/sg.h> // plib include
+#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
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
+ sgdVec3 geod_view_pos;
+
// absolute view position in earth coordinates
sgdVec3 abs_view_pos;
// translated to scenery.center
sgVec3 zero_elev;
+ // height ASL of the terrain for our current view position
+ // (future?) double ground_elev;
+
// 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;
- // vector in cartesian coordinates from current position to the
- // postion on the earth's surface the sun is directly over
- sgVec3 to_sun;
-
- // 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;
-
// 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;
+ sgVec3 world_up;
// sg versions of our friendly matrices
sgMat4 VIEW, VIEW_ROT, UP;
inline void set_clean() { dirty = false; }
// Update the view volume, position, and orientation
- virtual void update();
+ virtual void update() = 0;
public:
// Destructor
virtual ~FGViewer( void );
- // Initialize a view class
- virtual void init( void );
-
//////////////////////////////////////////////////////////////////////
// setter functions
//////////////////////////////////////////////////////////////////////
+ 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 ) {
set_dirty();
view_offset = a;
inline void set_goal_view_offset( double a) {
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();
//////////////////////////////////////////////////////////////////////
// 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; }
if ( dirty ) { update(); }
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;
+ return world_up;
}
inline const sgVec4 *get_VIEW() {
if ( dirty ) { update(); }
if ( dirty ) { update(); }
return UP;
}
-
- //////////////////////////////////////////////////////////////////////
- // 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 );
- }
};
projects / flightgear.git / blobdiff