//
// Written by Curtis Olson, started August 1997.
// overhaul started October 2000.
+// 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
//
#include <simgear/compiler.h>
+#include "fg_props.hxx"
+
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/debug/logstream.hxx>
+#include <simgear/constants.h>
+#include <simgear/math/point3d.hxx>
+#include <simgear/math/polar3d.hxx>
+#include <simgear/math/sg_geodesy.hxx>
+
+#include <Scenery/scenery.hxx>
+
+#include <simgear/math/vector.hxx>
+#include <Main/globals.hxx>
+#include <Model/acmodel.hxx>
+#include <Model/model.hxx>
#include "viewer.hxx"
+\f
+//////////////////////////////////////////////////////////////////
+// Norman's Optimized matrix rotators! //
+//////////////////////////////////////////////////////////////////
-// Constructor
-FGViewer::FGViewer( void ):
- fov(55.0),
- view_offset(0.0),
- goal_view_offset(0.0)
+
+// Since these are pure rotation matrices we can save some bookwork
+// by considering them to be 3x3 until the very end -- NHV
+static void MakeVIEW_OFFSET( sgMat4 dst,
+ const float angle1, const sgVec3 axis1,
+ const float angle2, const sgVec3 axis2 )
{
+ // make rotmatrix1 from angle and axis
+ float s = (float) sin ( angle1 ) ;
+ float c = (float) cos ( angle1 ) ;
+ float t = SG_ONE - c ;
+
+ sgMat3 mat1;
+ float tmp = t * axis1[0];
+ mat1[0][0] = tmp * axis1[0] + c ;
+ mat1[0][1] = tmp * axis1[1] + s * axis1[2] ;
+ mat1[0][2] = tmp * axis1[2] - s * axis1[1] ;
+
+ tmp = t * axis1[1];
+ mat1[1][0] = tmp * axis1[0] - s * axis1[2] ;
+ mat1[1][1] = tmp * axis1[1] + c ;
+ mat1[1][2] = tmp * axis1[2] + s * axis1[0] ;
+
+ tmp = t * axis1[2];
+ mat1[2][0] = tmp * axis1[0] + s * axis1[1] ;
+ mat1[2][1] = tmp * axis1[1] - s * axis1[0] ;
+ mat1[2][2] = tmp * axis1[2] + c ;
+
+ // make rotmatrix2 from angle and axis
+ s = (float) sin ( angle2 ) ;
+ c = (float) cos ( angle2 ) ;
+ t = SG_ONE - c ;
+
+ sgMat3 mat2;
+ tmp = t * axis2[0];
+ mat2[0][0] = tmp * axis2[0] + c ;
+ mat2[0][1] = tmp * axis2[1] + s * axis2[2] ;
+ mat2[0][2] = tmp * axis2[2] - s * axis2[1] ;
+
+ tmp = t * axis2[1];
+ mat2[1][0] = tmp * axis2[0] - s * axis2[2] ;
+ mat2[1][1] = tmp * axis2[1] + c ;
+ mat2[1][2] = tmp * axis2[2] + s * axis2[0] ;
+
+ tmp = t * axis2[2];
+ mat2[2][0] = tmp * axis2[0] + s * axis2[1] ;
+ mat2[2][1] = tmp * axis2[1] - s * axis2[0] ;
+ mat2[2][2] = tmp * axis2[2] + c ;
+
+ // multiply matrices
+ for ( int j = 0 ; j < 3 ; j++ ) {
+ dst[0][j] = mat2[0][0] * mat1[0][j] +
+ mat2[0][1] * mat1[1][j] +
+ mat2[0][2] * mat1[2][j];
+
+ dst[1][j] = mat2[1][0] * mat1[0][j] +
+ mat2[1][1] * mat1[1][j] +
+ mat2[1][2] * mat1[2][j];
+
+ dst[2][j] = mat2[2][0] * mat1[0][j] +
+ mat2[2][1] * mat1[1][j] +
+ mat2[2][2] * mat1[2][j];
+ }
+ // fill in 4x4 matrix elements
+ dst[0][3] = SG_ZERO;
+ dst[1][3] = SG_ZERO;
+ dst[2][3] = SG_ZERO;
+ dst[3][0] = SG_ZERO;
+ dst[3][1] = SG_ZERO;
+ dst[3][2] = SG_ZERO;
+ dst[3][3] = SG_ONE;
}
-// Update the view parameters
-void FGViewer::update() {
- SG_LOG( SG_VIEW, SG_ALERT, "Shouldn't ever see this" );
+////////////////////////////////////////////////////////////////////////
+// Implementation of FGViewer.
+////////////////////////////////////////////////////////////////////////
+
+// Constructor
+FGViewer::FGViewer( fgViewType Type, bool from_model, int from_model_index, bool at_model, int at_model_index, double x_offset_m, double y_offset_m, double z_offset_m, double near_m ):
+ _scaling_type(FG_SCALING_MAX),
+ _fov_deg(55.0),
+ _dirty(true),
+ _lon_deg(0),
+ _lat_deg(0),
+ _alt_ft(0),
+ _target_lon_deg(0),
+ _target_lat_deg(0),
+ _target_alt_ft(0),
+ _roll_deg(0),
+ _pitch_deg(0),
+ _heading_deg(0),
+ _heading_offset_deg(0),
+ _pitch_offset_deg(0),
+ _roll_offset_deg(0),
+ _goal_heading_offset_deg(0.0),
+ _goal_pitch_offset_deg(0.0)
+{
+ sgdZeroVec3(_absolute_view_pos);
+ _type = Type;
+ _from_model = from_model;
+ _from_model_index = from_model_index;
+ _at_model = at_model;
+ _at_model_index = at_model_index;
+ _x_offset_m = x_offset_m;
+ _y_offset_m = y_offset_m;
+ _z_offset_m = z_offset_m;
+ _ground_level_nearplane_m = near_m;
+ //a reasonable guess for init, so that the math doesn't blow up
}
// Destructor
FGViewer::~FGViewer( void ) {
}
+
+void
+FGViewer::init ()
+{
+ if ( _from_model )
+ _location = (FGLocation *) globals->get_aircraft_model()->get3DModel()->getFGLocation();
+ else
+ _location = (FGLocation *) new FGLocation;
+
+ if ( _type == FG_LOOKAT ) {
+ if ( _at_model )
+ _target_location = (FGLocation *) globals->get_aircraft_model()->get3DModel()->getFGLocation();
+ else
+ _target_location = (FGLocation *) new FGLocation;
+ }
+}
+
+void
+FGViewer::bind ()
+{
+}
+
+void
+FGViewer::unbind ()
+{
+}
+
+void
+FGViewer::setType ( int type )
+{
+ if (type == 0)
+ _type = FG_LOOKFROM;
+ if (type == 1)
+ _type = FG_LOOKAT;
+}
+
+void
+FGViewer::setLongitude_deg (double lon_deg)
+{
+ _dirty = true;
+ _lon_deg = lon_deg;
+}
+
+void
+FGViewer::setLatitude_deg (double lat_deg)
+{
+ _dirty = true;
+ _lat_deg = lat_deg;
+}
+
+void
+FGViewer::setAltitude_ft (double alt_ft)
+{
+ _dirty = true;
+ _alt_ft = alt_ft;
+}
+
+void
+FGViewer::setPosition (double lon_deg, double lat_deg, double alt_ft)
+{
+ _dirty = true;
+ _lon_deg = lon_deg;
+ _lat_deg = lat_deg;
+ _alt_ft = alt_ft;
+}
+
+void
+FGViewer::setTargetLongitude_deg (double lon_deg)
+{
+ _dirty = true;
+ _target_lon_deg = lon_deg;
+}
+
+void
+FGViewer::setTargetLatitude_deg (double lat_deg)
+{
+ _dirty = true;
+ _target_lat_deg = lat_deg;
+}
+
+void
+FGViewer::setTargetAltitude_ft (double alt_ft)
+{
+ _dirty = true;
+ _target_alt_ft = alt_ft;
+}
+
+void
+FGViewer::setTargetPosition (double lon_deg, double lat_deg, double alt_ft)
+{
+ _dirty = true;
+ _target_lon_deg = lon_deg;
+ _target_lat_deg = lat_deg;
+ _target_alt_ft = alt_ft;
+}
+
+void
+FGViewer::setRoll_deg (double roll_deg)
+{
+ _dirty = true;
+ _roll_deg = roll_deg;
+}
+
+void
+FGViewer::setPitch_deg (double pitch_deg)
+{
+ _dirty = true;
+ _pitch_deg = pitch_deg;
+}
+
+void
+FGViewer::setHeading_deg (double heading_deg)
+{
+ _dirty = true;
+ _heading_deg = heading_deg;
+}
+
+void
+FGViewer::setOrientation (double roll_deg, double pitch_deg, double heading_deg)
+{
+ _dirty = true;
+ _roll_deg = roll_deg;
+ _pitch_deg = pitch_deg;
+ _heading_deg = heading_deg;
+}
+
+void
+FGViewer::setTargetRoll_deg (double target_roll_deg)
+{
+ _dirty = true;
+ _target_roll_deg = target_roll_deg;
+}
+
+void
+FGViewer::setTargetPitch_deg (double target_pitch_deg)
+{
+ _dirty = true;
+ _target_pitch_deg = target_pitch_deg;
+}
+
+void
+FGViewer::setTargetHeading_deg (double target_heading_deg)
+{
+ _dirty = true;
+ _target_heading_deg = target_heading_deg;
+}
+
+void
+FGViewer::setTargetOrientation (double target_roll_deg, double target_pitch_deg, double target_heading_deg)
+{
+ _dirty = true;
+ _target_roll_deg = target_roll_deg;
+ _target_pitch_deg = target_pitch_deg;
+ _target_heading_deg = target_heading_deg;
+}
+
+void
+FGViewer::setXOffset_m (double x_offset_m)
+{
+ _dirty = true;
+ _x_offset_m = x_offset_m;
+}
+
+void
+FGViewer::setYOffset_m (double y_offset_m)
+{
+ _dirty = true;
+ _y_offset_m = y_offset_m;
+}
+
+void
+FGViewer::setZOffset_m (double z_offset_m)
+{
+ _dirty = true;
+ _z_offset_m = z_offset_m;
+}
+
+void
+FGViewer::setPositionOffsets (double x_offset_m, double y_offset_m, double z_offset_m)
+{
+ _dirty = true;
+ _x_offset_m = x_offset_m;
+ _y_offset_m = y_offset_m;
+ _z_offset_m = z_offset_m;
+}
+
+void
+FGViewer::setRollOffset_deg (double roll_offset_deg)
+{
+ _dirty = true;
+ _roll_offset_deg = roll_offset_deg;
+}
+
+void
+FGViewer::setPitchOffset_deg (double pitch_offset_deg)
+{
+ _dirty = true;
+ _pitch_offset_deg = pitch_offset_deg;
+}
+
+void
+FGViewer::setHeadingOffset_deg (double heading_offset_deg)
+{
+ _dirty = true;
+ _heading_offset_deg = heading_offset_deg;
+}
+
+void
+FGViewer::setGoalRollOffset_deg (double goal_roll_offset_deg)
+{
+ _dirty = true;
+ _goal_roll_offset_deg = goal_roll_offset_deg;
+}
+
+void
+FGViewer::setGoalPitchOffset_deg (double goal_pitch_offset_deg)
+{
+ _dirty = true;
+ _goal_pitch_offset_deg = goal_pitch_offset_deg;
+ if ( _goal_pitch_offset_deg < -90 ) {
+ _goal_pitch_offset_deg = -90.0;
+ }
+ if ( _goal_pitch_offset_deg > 90.0 ) {
+ _goal_pitch_offset_deg = 90.0;
+ }
+
+}
+
+void
+FGViewer::setGoalHeadingOffset_deg (double goal_heading_offset_deg)
+{
+ _dirty = true;
+ _goal_heading_offset_deg = goal_heading_offset_deg;
+ while ( _goal_heading_offset_deg < 0.0 ) {
+ _goal_heading_offset_deg += 360;
+ }
+ while ( _goal_heading_offset_deg > 360 ) {
+ _goal_heading_offset_deg -= 360;
+ }
+}
+
+void
+FGViewer::setOrientationOffsets (double roll_offset_deg, double pitch_offset_deg, double heading_offset_deg)
+{
+ _dirty = true;
+ _roll_offset_deg = roll_offset_deg;
+ _pitch_offset_deg = pitch_offset_deg;
+ _heading_offset_deg = heading_offset_deg;
+}
+
+double *
+FGViewer::get_absolute_view_pos ()
+{
+ if (_dirty)
+ recalc();
+ return _absolute_view_pos;
+}
+
+float *
+FGViewer::getRelativeViewPos ()
+{
+ if (_dirty)
+ recalc();
+ return _relative_view_pos;
+}
+
+float *
+FGViewer::getZeroElevViewPos ()
+{
+ if (_dirty)
+ recalc();
+ return _zero_elev_view_pos;
+}
+
+void
+FGViewer::updateFromModelLocation (FGLocation * location)
+{
+ sgCopyMat4(LOCAL, location->getCachedTransformMatrix());
+}
+
+void
+FGViewer::recalcOurOwnLocation (FGLocation * location, double lon_deg, double lat_deg, double alt_ft,
+ double roll_deg, double pitch_deg, double heading_deg)
+{
+ // update from our own data...
+ location->setPosition( lon_deg, lat_deg, alt_ft );
+ location->setOrientation( roll_deg, pitch_deg, heading_deg );
+ sgCopyMat4(LOCAL, location->getTransformMatrix());
+}
+
+// recalc() is done every time one of the setters is called (making the
+// cached data "dirty") on the next "get". It calculates all the outputs
+// for viewer.
+void
+FGViewer::recalc ()
+{
+ if (_type == FG_LOOKFROM) {
+ recalcLookFrom();
+ } else {
+ recalcLookAt();
+ }
+
+ set_clean();
+}
+
+// recalculate for LookFrom view type...
+void
+FGViewer::recalcLookFrom ()
+{
+
+ sgVec3 right, forward;
+ sgVec3 eye_pos;
+ sgVec3 position_offset; // eye position offsets (xyz)
+
+ // LOOKFROM mode...
+
+ // Update location data...
+ if ( _from_model ) {
+ // update or data from model location
+ updateFromModelLocation(_location);
+ } else {
+ // update from our own data...
+ recalcOurOwnLocation( _location, _lon_deg, _lat_deg, _alt_ft,
+ _roll_deg, _pitch_deg, _heading_deg );
+ }
+
+ // copy data from location class to local items...
+ copyLocationData();
+
+ // make sg vectors view up, right and forward vectors from LOCAL
+ sgSetVec3( _view_up, LOCAL[2][0], LOCAL[2][1], LOCAL[2][2] );
+ sgSetVec3( right, LOCAL[1][0], LOCAL[1][1], LOCAL[1][2] );
+ sgSetVec3( forward, -LOCAL[0][0], -LOCAL[0][1], -LOCAL[0][2] );
+
+
+ // Note that when in "lookfrom" view the "view up" vector is always applied
+ // to the viewer. View up is based on verticle of the aircraft itself. (see
+ // "LOCAL" matrix above)
+
+ // Orientation Offsets matrix
+ MakeVIEW_OFFSET( VIEW_OFFSET,
+ _heading_offset_deg * SG_DEGREES_TO_RADIANS, _view_up,
+ _pitch_offset_deg * SG_DEGREES_TO_RADIANS, right );
+
+ // Make the VIEW matrix.
+ sgSetVec4(VIEW[0], right[0], right[1], right[2],SG_ZERO);
+ sgSetVec4(VIEW[1], forward[0], forward[1], forward[2],SG_ZERO);
+ sgSetVec4(VIEW[2], _view_up[0], _view_up[1], _view_up[2],SG_ZERO);
+ sgSetVec4(VIEW[3], SG_ZERO, SG_ZERO, SG_ZERO,SG_ONE);
+
+ // rotate matrix to get a matrix to apply Eye Position Offsets
+ sgMat4 VIEW_UP; // L0 forward L1 right L2 up
+ sgCopyVec4(VIEW_UP[0], LOCAL[1]);
+ sgCopyVec4(VIEW_UP[1], LOCAL[2]);
+ sgCopyVec4(VIEW_UP[2], LOCAL[0]);
+ sgZeroVec4(VIEW_UP[3]);
+
+ // Eye Position Offsets to vector
+ sgSetVec3( position_offset, _x_offset_m, _y_offset_m, _z_offset_m );
+ sgXformVec3( position_offset, position_offset, VIEW_UP);
+
+ // add the offsets including rotations to the translation vector
+ sgAddVec3( _view_pos, position_offset );
+
+ // multiply the OFFSETS (for heading and pitch) into the VIEW
+ sgPostMultMat4(VIEW, VIEW_OFFSET);
+
+ // add the position data to the matrix
+ sgSetVec4(VIEW[3], _view_pos[0], _view_pos[1], _view_pos[2],SG_ONE);
+
+}
+
+void
+FGViewer::recalcLookAt ()
+{
+
+ sgVec3 right;
+ sgVec3 eye_pos, at_pos;
+ sgVec3 position_offset; // eye position offsets (xyz)
+
+ // The position vectors originate from the view point or target location
+ // depending on the type of view.
+
+ // LOOKAT mode...
+
+ // Update location data for target...
+ if ( _at_model ) {
+ // update or data from model location
+ updateFromModelLocation(_target_location);
+ } else {
+ // if not model then calculate our own target position...
+ recalcOurOwnLocation( _target_location, _target_lon_deg, _target_lat_deg, _target_alt_ft,
+ _target_roll_deg, _target_pitch_deg, _target_heading_deg );
+ }
+ // calculate the "at" target object positon relative to eye or view's tile center...
+ sgdVec3 dVec3;
+ sgdSetVec3(dVec3, _location->get_tile_center()[0], _location->get_tile_center()[1], _location->get_tile_center()[2]);
+ sgdSubVec3(dVec3, _target_location->get_absolute_view_pos(), dVec3 );
+ sgSetVec3(at_pos, dVec3[0], dVec3[1], dVec3[2]);
+
+ // Update location data for eye...
+ if ( _from_model ) {
+ // update or data from model location
+ updateFromModelLocation(_location);
+ } else {
+ // update from our own data, just the rotation here...
+ recalcOurOwnLocation( _location, _lon_deg, _lat_deg, _alt_ft,
+ _roll_deg, _pitch_deg, _heading_deg );
+ }
+ // save the eye positon...
+ sgCopyVec3(eye_pos, _location->get_view_pos());
+
+ // copy data from location class to local items...
+ copyLocationData();
+
+ // make sg vectors view up, right and forward vectors from LOCAL
+ sgSetVec3( _view_up, LOCAL[2][0], LOCAL[2][1], LOCAL[2][2] );
+ sgSetVec3( right, LOCAL[1][0], LOCAL[1][1], LOCAL[1][2] );
+
+ // Note that when in "lookat" view the "world up" vector is always applied
+ // to the viewer. World up is based on verticle at a given lon/lat (see
+ // matrix "UP" above).
+
+ // Orientation Offsets matrix
+ MakeVIEW_OFFSET( VIEW_OFFSET,
+ (_heading_offset_deg -_heading_deg) * SG_DEGREES_TO_RADIANS, _world_up,
+ _pitch_offset_deg * SG_DEGREES_TO_RADIANS, right );
+
+ // add in the Orientation Offsets here
+ sgSetVec3( position_offset, _x_offset_m, _y_offset_m, _z_offset_m );
+ sgXformVec3( position_offset, position_offset, UP);
+
+ sgXformVec3( position_offset, position_offset, VIEW_OFFSET );
+
+ // add the Position offsets from object to the eye position
+ sgAddVec3( eye_pos, eye_pos, position_offset );
+
+ // Make the VIEW matrix for a "LOOKAT".
+ sgMakeLookAtMat4( VIEW, eye_pos, at_pos, _view_up );
+
+}
+
+// copy results from location class to viewer...
+// FIXME: some of these should be changed to reference directly to FGLocation...
+void
+FGViewer::copyLocationData()
+{
+ // Get our friendly vectors from the eye location...
+ sgCopyVec3(_zero_elev_view_pos, _location->get_zero_elev());
+ sgCopyVec3(_relative_view_pos, _location->get_view_pos());
+ sgdCopyVec3(_absolute_view_pos, _location->get_absolute_view_pos());
+ sgCopyMat4(UP, _location->getCachedUpMatrix());
+ sgCopyVec3(_world_up, _location->get_world_up());
+ // these are the vectors that the sun and moon code like to get...
+ sgCopyVec3(_surface_east, _location->get_surface_east());
+ sgCopyVec3(_surface_south, _location->get_surface_south());
+
+ // Update viewer's postion data for the eye location...
+ _lon_deg = _location->getLongitude_deg();
+ _lat_deg = _location->getLatitude_deg();
+ _alt_ft = _location->getAltitudeASL_ft();
+ _roll_deg = _location->getRoll_deg();
+ _pitch_deg = _location->getPitch_deg();
+ _heading_deg = _location->getHeading_deg();
+
+ // Update viewer's postion data for the target (at object) location
+ if (_type == FG_LOOKAT) {
+ _target_lon_deg = _target_location->getLongitude_deg();
+ _target_lat_deg = _target_location->getLatitude_deg();
+ _target_alt_ft = _target_location->getAltitudeASL_ft();
+ _target_roll_deg = _target_location->getRoll_deg();
+ _target_pitch_deg = _target_location->getPitch_deg();
+ _target_heading_deg = _target_location->getHeading_deg();
+ }
+
+ // copy coordinates to outputs for viewer...
+ sgCopyVec3(_zero_elev, _zero_elev_view_pos);
+ sgCopyVec3(_view_pos, _relative_view_pos);
+}
+
+double
+FGViewer::get_h_fov()
+{
+ switch (_scaling_type) {
+ case FG_SCALING_WIDTH: // h_fov == fov
+ return _fov_deg;
+ case FG_SCALING_MAX:
+ if (_aspect_ratio < 1.0) {
+ // h_fov == fov
+ return _fov_deg;
+ } else {
+ // v_fov == fov
+ return atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) / _aspect_ratio) *
+ SG_RADIANS_TO_DEGREES * 2;
+ }
+ default:
+ assert(false);
+ }
+ return 0.0;
+}
+
+
+
+double
+FGViewer::get_v_fov()
+{
+ switch (_scaling_type) {
+ case FG_SCALING_WIDTH: // h_fov == fov
+ return atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) * _aspect_ratio) *
+ SG_RADIANS_TO_DEGREES * 2;
+ case FG_SCALING_MAX:
+ if (_aspect_ratio < 1.0) {
+ // h_fov == fov
+ return atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) * _aspect_ratio) *
+ SG_RADIANS_TO_DEGREES * 2;
+ } else {
+ // v_fov == fov
+ return _fov_deg;
+ }
+ default:
+ assert(false);
+ }
+ return 0.0;
+}
+
+void
+FGViewer::update (double dt)
+{
+ int i;
+ int dt_ms = int(dt * 1000);
+ for ( i = 0; i < dt_ms; i++ ) {
+ if ( fabs( _goal_heading_offset_deg - _heading_offset_deg) < 1 ) {
+ setHeadingOffset_deg( _goal_heading_offset_deg );
+ break;
+ } else {
+ // move current_view.headingoffset towards
+ // current_view.goal_view_offset
+ if ( _goal_heading_offset_deg > _heading_offset_deg )
+ {
+ if ( _goal_heading_offset_deg - _heading_offset_deg < 180 ){
+ incHeadingOffset_deg( 0.5 );
+ } else {
+ incHeadingOffset_deg( -0.5 );
+ }
+ } else {
+ if ( _heading_offset_deg - _goal_heading_offset_deg < 180 ){
+ incHeadingOffset_deg( -0.5 );
+ } else {
+ incHeadingOffset_deg( 0.5 );
+ }
+ }
+ if ( _heading_offset_deg > 360 ) {
+ incHeadingOffset_deg( -360 );
+ } else if ( _heading_offset_deg < 0 ) {
+ incHeadingOffset_deg( 360 );
+ }
+ }
+ }
+
+ for ( i = 0; i < dt_ms; i++ ) {
+ if ( fabs( _goal_pitch_offset_deg - _pitch_offset_deg ) < 1 ) {
+ setPitchOffset_deg( _goal_pitch_offset_deg );
+ break;
+ } else {
+ // move current_view.pitch_offset_deg towards
+ // current_view.goal_pitch_offset
+ if ( _goal_pitch_offset_deg > _pitch_offset_deg )
+ {
+ incPitchOffset_deg( 1.0 );
+ } else {
+ incPitchOffset_deg( -1.0 );
+ }
+ if ( _pitch_offset_deg > 90 ) {
+ setPitchOffset_deg(90);
+ } else if ( _pitch_offset_deg < -90 ) {
+ setPitchOffset_deg( -90 );
+ }
+ }
+ }
+}
projects / flightgear.git / blobdiff