X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fviewer.cxx;h=af9fe455ee859d9a2a5e92159e42d1abee5191db;hb=b125315e5067b9cb2ed6c800106b9c520afb4cf1;hp=f28a4dad859efcc8a6b733a671456271b74afedd;hpb=71598c12f80b47ea02973d2deb0b48bbe5e85b3f;p=flightgear.git diff --git a/src/Main/viewer.cxx b/src/Main/viewer.cxx index f28a4dad8..af9fe455e 100644 --- a/src/Main/viewer.cxx +++ b/src/Main/viewer.cxx @@ -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 @@ -19,10 +19,13 @@ // // 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. // // $Id$ +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif #include @@ -34,106 +37,35 @@ #include #include -#include #include #include - -#include -//#include
- +#include #include + #include
+#include #include #include "viewer.hxx" - -////////////////////////////////////////////////////////////////// -// Norman's Optimized matrix rotators! // -////////////////////////////////////////////////////////////////// - - -// 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; -} - +#include "CameraGroup.hxx" +using namespace flightgear; + //////////////////////////////////////////////////////////////////////// // 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), +// Constructor... +FGViewer::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 ): _dirty(true), _lon_deg(0), _lat_deg(0), @@ -144,23 +76,49 @@ FGViewer::FGViewer( fgViewType Type, bool from_model, int from_model_index, bool _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) + _damp_sync(0), + _damp_roll(0), + _damp_pitch(0), + _damp_heading(0), + _scaling_type(FG_SCALING_MAX), + _cameraGroup(CameraGroup::getDefault()) { - sgdZeroVec3(_absolute_view_pos); + _absolute_view_pos = SGVec3d(0, 0, 0); _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; + + _internal = internal; + + if (damp_roll > 0.0) + _damp_roll = 1.0 / pow(10.0, fabs(damp_roll)); + if (damp_pitch > 0.0) + _damp_pitch = 1.0 / pow(10.0, fabs(damp_pitch)); + if (damp_heading > 0.0) + _damp_heading = 1.0 / pow(10.0, fabs(damp_heading)); + + _offset_m.x() = x_offset_m; + _offset_m.y() = y_offset_m; + _offset_m.z() = z_offset_m; + _heading_offset_deg = heading_offset_deg; + _pitch_offset_deg = pitch_offset_deg; + _roll_offset_deg = roll_offset_deg; + _goal_heading_offset_deg = heading_offset_deg; + _goal_pitch_offset_deg = pitch_offset_deg; + _goal_roll_offset_deg = roll_offset_deg; + if (fov_deg > 0) { + _fov_deg = fov_deg; + } else { + _fov_deg = 55; + } + _aspect_ratio_multiplier = aspect_ratio_multiplier; + _target_offset_m.x() = target_x_offset_m; + _target_offset_m.y() = target_y_offset_m; + _target_offset_m.z() = target_z_offset_m; _ground_level_nearplane_m = near_m; - //a reasonable guess for init, so that the math doesn't blow up + // a reasonable guess for init, so that the math doesn't blow up } @@ -171,17 +129,6 @@ 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 @@ -203,6 +150,12 @@ FGViewer::setType ( int type ) _type = FG_LOOKAT; } +void +FGViewer::setInternal ( bool internal ) +{ + _internal = internal; +} + void FGViewer::setLongitude_deg (double lon_deg) { @@ -327,30 +280,51 @@ void FGViewer::setXOffset_m (double x_offset_m) { _dirty = true; - _x_offset_m = x_offset_m; + _offset_m.x() = x_offset_m; } void FGViewer::setYOffset_m (double y_offset_m) { _dirty = true; - _y_offset_m = y_offset_m; + _offset_m.y() = y_offset_m; } void FGViewer::setZOffset_m (double z_offset_m) { _dirty = true; - _z_offset_m = z_offset_m; + _offset_m.z() = z_offset_m; +} + +void +FGViewer::setTargetXOffset_m (double target_x_offset_m) +{ + _dirty = true; + _target_offset_m.x() = target_x_offset_m; +} + +void +FGViewer::setTargetYOffset_m (double target_y_offset_m) +{ + _dirty = true; + _target_offset_m.y() = target_y_offset_m; +} + +void +FGViewer::setTargetZOffset_m (double target_z_offset_m) +{ + _dirty = true; + _target_offset_m.z() = target_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; + _offset_m.x() = x_offset_m; + _offset_m.y() = y_offset_m; + _offset_m.z() = z_offset_m; } void @@ -417,264 +391,217 @@ FGViewer::setOrientationOffsets (double roll_offset_deg, double 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()); - _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(); - 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()); -} - -void -FGViewer::recalcOurOwnLocation (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()); - 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()); - // 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()); -} - // 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 () { - sgVec3 minus_z, right, forward, tilt; - sgMat4 tmpROT; // temp rotation work matrices - 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. - if (_type == FG_LOOKFROM) { - // LOOKFROM mode... - if ( _from_model ) { - // update or data from model location - updateFromModelLocation(_location); - } else { - // update from our own data... - recalcOurOwnLocation( _lon_deg, _lat_deg, _alt_ft, - _roll_deg, _pitch_deg, _heading_deg ); - // get world up data from just recalced location - sgCopyMat4(UP, _location->getUpMatrix()); - sgCopyVec3(_world_up, _location->get_world_up()); - } - + recalcLookFrom(); } else { - - // LOOKAT mode... - if ( _from_model ) { - // update or data from model location - updateFromModelLocation(_location); - } else { - // update from our own data, just the rotation here... - recalcOurOwnLocation( _lon_deg, _lat_deg, _alt_ft, - _roll_deg, _pitch_deg, _heading_deg ); - // get world up data from just recalced location - sgCopyMat4(UP, _location->getUpMatrix()); - sgCopyVec3(_world_up, _location->get_world_up()); - } - // save they eye positon... - sgCopyVec3(eye_pos, _location->get_view_pos()); - // save the eye rotation before getting target values!!! - sgCopyMat4(tmpROT, LOCAL); - - if ( _at_model ) { - // update or data from model location - updateFromModelLocation(_target_location); - } else { - // if not model then calculate our own target position... - recalcOurOwnLocation( _target_lon_deg, _target_lat_deg, _target_alt_ft, - _target_roll_deg, _target_pitch_deg, _target_heading_deg ); - } - // restore the eye rotation (the from position rotation) - sgCopyMat4(LOCAL, tmpROT); - - } - - // the coordinates generated by the above "recalcPositionVectors" - sgCopyVec3(_zero_elev, _zero_elev_view_pos); - sgCopyVec3(_view_pos, _relative_view_pos); - - // FIXME: - // Doing this last recalc here for published values...where the airplane is - // This should be per aircraft or model (for published values) before - // multiple FDM can be done. - // This info should come directly from the model (not through viewer), - // because in some cases there is no model directly assigned as a lookfrom - // position. The problem that arises is related to the FDM interface looking - // indirectly to the viewer to find the altitude of the aircraft on the runway. - // - // Note that recalcPositionVectors can be removed from viewer when this - // issue is addressed. - // - if (!_from_model) { - recalcPositionVectors(fgGetDouble("/position/longitude-deg"), - fgGetDouble("/position/latitude-deg"), - fgGetDouble("/position/altitude-ft")); - } - - // 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] ); - - if (_type == FG_LOOKAT) { - - // 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 ); - - // at position (what we are looking at) - sgCopyVec3( at_pos, _view_pos ); - - // Make the VIEW matrix for a "LOOKAT". - sgMakeLookAtMat4( VIEW, eye_pos, at_pos, _view_up ); - } - - if (_type == FG_LOOKFROM) { - - // 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); - + recalcLookAt(); } set_clean(); } +// recalculate for LookFrom view type... void -FGViewer::recalcPositionVectors (double lon_deg, double lat_deg, double alt_ft) const +FGViewer::recalcLookFrom () { - double sea_level_radius_m; - double lat_geoc_rad; + // Update location data ... + double lat, lon, alt, head, pitch, roll; + if ( _from_model ) { + SGModelPlacement* placement = globals->get_aircraft_model()->get3DModel(); + lat = placement->getLatitudeDeg(); + lon = placement->getLongitudeDeg(); + alt = placement->getElevationFt(); + head = placement->getHeadingDeg(); + pitch = placement->getPitchDeg(); + roll = placement->getRollDeg(); + } else { + lat = _lat_deg; + lon = _lon_deg; + alt = _alt_ft; + head = _heading_deg; + pitch = _pitch_deg; + roll = _roll_deg; + } + if ( !_from_model ) { + // update from our own data... + dampEyeData(roll, pitch, head); + } - // Convert from geodetic to geocentric - // coordinates. - sgGeodToGeoc(lat_deg * SGD_DEGREES_TO_RADIANS, - alt_ft * SG_FEET_TO_METER, - &sea_level_radius_m, - &lat_geoc_rad); + // The geodetic position of our base view position + SGGeod geodPos = SGGeod::fromDegFt(lon, lat, alt); + // The rotation rotating from the earth centerd frame to + // the horizontal local OpenGL frame + SGQuatd hlOr = SGQuatd::viewHL(geodPos); + + // the rotation from the horizontal local frame to the basic view orientation + SGQuatd hlToBody = SGQuatd::fromYawPitchRollDeg(head, pitch, roll); + hlToBody = SGQuatd::simToView(hlToBody); + + // The cartesian position of the basic view coordinate + SGVec3d position = SGVec3d::fromGeod(geodPos); + // the rotation offset, don't know why heading is negative here ... + SGQuatd viewOffsetOr = SGQuatd::simToView( + SGQuatd::fromYawPitchRollDeg(-_heading_offset_deg, _pitch_offset_deg, + _roll_offset_deg)); + + // Compute the eyepoints orientation and position + // wrt the earth centered frame - that is global coorinates + SGQuatd ec2body = hlOr*hlToBody; + _absolute_view_pos = position + ec2body.backTransform(_offset_m); + mViewOrientation = ec2body*viewOffsetOr; +} + +void +FGViewer::recalcLookAt () +{ + // The geodetic position of our target to look at + SGGeod geodTargetPos; + SGQuatd geodTargetOr; + if ( _at_model ) { + SGModelPlacement* placement = globals->get_aircraft_model()->get3DModel(); + double lat = placement->getLatitudeDeg(); + double lon = placement->getLongitudeDeg(); + double alt = placement->getElevationFt(); + geodTargetPos = SGGeod::fromDegFt(lon, lat, alt); + + double head = placement->getHeadingDeg(); + double pitch = placement->getPitchDeg(); + double roll = placement->getRollDeg(); + geodTargetOr = SGQuatd::fromYawPitchRollDeg(head, pitch, roll); + } else { + dampEyeData(_target_roll_deg, _target_pitch_deg, _target_heading_deg); + + // if not model then calculate our own target position... + geodTargetPos = SGGeod::fromDegFt(_target_lon_deg, + _target_lat_deg, + _target_alt_ft); + geodTargetOr = SGQuatd::fromYawPitchRollDeg(_target_heading_deg, + _target_pitch_deg, + _target_roll_deg); + } + SGQuatd geodTargetHlOr = SGQuatd::fromLonLat(geodTargetPos); + + + SGGeod geodEyePos; + SGQuatd geodEyeOr; + if ( _from_model ) { + SGModelPlacement* placement = globals->get_aircraft_model()->get3DModel(); + double lat = placement->getLatitudeDeg(); + double lon = placement->getLongitudeDeg(); + double alt = placement->getElevationFt(); + geodEyePos = SGGeod::fromDegFt(lon, lat, alt); + + double head = placement->getHeadingDeg(); + double pitch = placement->getPitchDeg(); + double roll = placement->getRollDeg(); + geodEyeOr = SGQuatd::fromYawPitchRollDeg(head, pitch, roll); + } else { + dampEyeData(_roll_deg, _pitch_deg, _heading_deg); - // Calculate the cartesian coordinates - // of point directly below at sea level. - // aka Zero Elevation Position - Point3D p = Point3D(lon_deg * SG_DEGREES_TO_RADIANS, - lat_geoc_rad, - sea_level_radius_m); - Point3D tmp = sgPolarToCart3d(p) - scenery.get_next_center(); - sgSetVec3(_zero_elev_view_pos, tmp[0], tmp[1], tmp[2]); + // update from our own data, just the rotation here... + geodEyePos = SGGeod::fromDegFt(_lon_deg, _lat_deg, _alt_ft); + geodEyeOr = SGQuatd::fromYawPitchRollDeg(_heading_deg, + _pitch_deg, + _roll_deg); + } + SGQuatd geodEyeHlOr = SGQuatd::fromLonLat(geodEyePos); + + // the rotation offset, don't know why heading is negative here ... + SGQuatd eyeOffsetOr = + SGQuatd::fromYawPitchRollDeg(-_heading_offset_deg + 180, _pitch_offset_deg, + _roll_offset_deg); + + // Offsets to the eye position + SGVec3d eyeOff(-_offset_m.z(), _offset_m.x(), -_offset_m.y()); + SGQuatd ec2eye = geodEyeHlOr*geodEyeOr; + SGVec3d eyeCart = SGVec3d::fromGeod(geodEyePos); + eyeCart += (ec2eye*eyeOffsetOr).backTransform(eyeOff); + + SGVec3d atCart = SGVec3d::fromGeod(geodTargetPos); + + // add target offsets to at_position... + SGVec3d target_pos_off(-_target_offset_m.z(), _target_offset_m.x(), + -_target_offset_m.y()); + target_pos_off = (geodTargetHlOr*geodTargetOr).backTransform(target_pos_off); + atCart += target_pos_off; + eyeCart += target_pos_off; + + // Compute the eyepoints orientation and position + // wrt the earth centered frame - that is global coorinates + _absolute_view_pos = eyeCart; + + // the view direction + SGVec3d dir = normalize(atCart - eyeCart); + // the up directon + SGVec3d up = ec2eye.backTransform(SGVec3d(0, 0, -1)); + // rotate dir to the 0-th unit vector + // rotate up to 2-th unit vector + mViewOrientation = SGQuatd::fromRotateTo(-dir, 2, up, 1); +} + +void +FGViewer::dampEyeData(double &roll_deg, double &pitch_deg, double &heading_deg) +{ + const double interval = 0.01; + + static FGViewer *last_view = 0; + if (last_view != this) { + _damp_sync = 0.0; + _damped_roll_deg = roll_deg; + _damped_pitch_deg = pitch_deg; + _damped_heading_deg = heading_deg; + last_view = this; + return; + } - // Calculate the absolute view position - // in fgfs coordinates. - // aka Absolute View Position - p.setz(p.radius() + alt_ft * SG_FEET_TO_METER); - tmp = sgPolarToCart3d(p); - sgdSetVec3(_absolute_view_pos, tmp[0], tmp[1], tmp[2]); + if (_damp_sync < interval) { + if (_damp_roll > 0.0) + roll_deg = _damped_roll_deg; + if (_damp_pitch > 0.0) + pitch_deg = _damped_pitch_deg; + if (_damp_heading > 0.0) + heading_deg = _damped_heading_deg; + return; + } - // Calculate the relative view position - // from the scenery center. - // aka Relative View Position - sgdVec3 scenery_center; - sgdSetVec3(scenery_center, - scenery.get_next_center().x(), - scenery.get_next_center().y(), - scenery.get_next_center().z()); - sgdVec3 view_pos; - sgdSubVec3(view_pos, _absolute_view_pos, scenery_center); - sgSetVec3(_relative_view_pos, view_pos); + while (_damp_sync >= interval) { + _damp_sync -= interval; + + double d; + if (_damp_roll > 0.0) { + d = _damped_roll_deg - roll_deg; + if (d >= 180.0) + _damped_roll_deg -= 360.0; + else if (d < -180.0) + _damped_roll_deg += 360.0; + roll_deg = _damped_roll_deg = roll_deg * _damp_roll + _damped_roll_deg * (1 - _damp_roll); + } + if (_damp_pitch > 0.0) { + d = _damped_pitch_deg - pitch_deg; + if (d >= 180.0) + _damped_pitch_deg -= 360.0; + else if (d < -180.0) + _damped_pitch_deg += 360.0; + pitch_deg = _damped_pitch_deg = pitch_deg * _damp_pitch + _damped_pitch_deg * (1 - _damp_pitch); + } + + if (_damp_heading > 0.0) { + d = _damped_heading_deg - heading_deg; + if (d >= 180.0) + _damped_heading_deg -= 360.0; + else if (d < -180.0) + _damped_heading_deg += 360.0; + heading_deg = _damped_heading_deg = heading_deg * _damp_heading + _damped_heading_deg * (1 - _damp_heading); + } + } } double @@ -689,26 +616,35 @@ FGViewer::get_h_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; + return + atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) + / (_aspect_ratio*_aspect_ratio_multiplier)) + * 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; + return + atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) + * (_aspect_ratio*_aspect_ratio_multiplier)) + * 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; + return + atan(tan(_fov_deg/2 * SG_DEGREES_TO_RADIANS) + * (_aspect_ratio*_aspect_ratio_multiplier)) + * SG_RADIANS_TO_DEGREES * 2; } else { // v_fov == fov return _fov_deg; @@ -716,13 +652,17 @@ FGViewer::get_v_fov() default: assert(false); } + return 0.0; } void -FGViewer::update (int dt) +FGViewer::update (double dt) { + _damp_sync += dt; + int i; - for ( i = 0; i < dt; 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; @@ -751,7 +691,7 @@ FGViewer::update (int dt) } } - for ( i = 0; i < dt; i++ ) { + for ( i = 0; i < dt_ms; i++ ) { if ( fabs( _goal_pitch_offset_deg - _pitch_offset_deg ) < 1 ) { setPitchOffset_deg( _goal_pitch_offset_deg ); break; @@ -771,4 +711,29 @@ FGViewer::update (int dt) } } } + + + for ( i = 0; i < dt_ms; i++ ) { + if ( fabs( _goal_roll_offset_deg - _roll_offset_deg ) < 1 ) { + setRollOffset_deg( _goal_roll_offset_deg ); + break; + } else { + // move current_view.roll_offset_deg towards + // current_view.goal_roll_offset + if ( _goal_roll_offset_deg > _roll_offset_deg ) + { + incRollOffset_deg( 1.0 ); + } else { + incRollOffset_deg( -1.0 ); + } + if ( _roll_offset_deg > 90 ) { + setRollOffset_deg(90); + } else if ( _roll_offset_deg < -90 ) { + setRollOffset_deg( -90 ); + } + } + } + recalc(); + _cameraGroup->update(_absolute_view_pos.osg(), mViewOrientation.osg()); + _cameraGroup->setCameraParameters(get_v_fov(), get_aspect_ratio()); }