X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FMain%2Fviewer.cxx;h=f2ffd56c9d57a5fae327aae613bc7e6fc6068f45;hb=18d1593c42c2df60d7fb44ace722ca3e8a7fd82c;hp=33a2868232f77056b3f4ac354199c34a9d03410d;hpb=35819b8c4d98207560392b80020f2d0cc3a4c2c9;p=flightgear.git diff --git a/src/Main/viewer.cxx b/src/Main/viewer.cxx index 33a286823..f2ffd56c9 100644 --- a/src/Main/viewer.cxx +++ b/src/Main/viewer.cxx @@ -2,8 +2,10 @@ // // 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 +// 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 @@ -17,42 +19,755 @@ // // 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 +#include "fg_props.hxx" + #ifdef HAVE_CONFIG_H # include #endif #include +#include +#include +#include +#include +#include +#include + +#include
+#include +#include #include "viewer.hxx" +#include "CameraGroup.hxx" + +using namespace flightgear; + +//////////////////////////////////////////////////////////////////////// +// Implementation of FGViewer. +//////////////////////////////////////////////////////////////////////// -// Constructor -FGViewer::FGViewer( void ) +// 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), + _alt_ft(0), + _target_lon_deg(0), + _target_lat_deg(0), + _target_alt_ft(0), + _roll_deg(0), + _pitch_deg(0), + _heading_deg(0), + _damp_sync(0), + _damp_roll(0), + _damp_pitch(0), + _damp_heading(0), + _scaling_type(FG_SCALING_MAX), + _location(0), + _target_location(0), + _cameraGroup(CameraGroup::getDefault()) { + _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; + + _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 } -// Initialize a view structure -void FGViewer::init( void ) { - FG_LOG( FG_VIEW, FG_ALERT, "Shouldn't ever see this" ); - exit(-1); +// Destructor +FGViewer::~FGViewer( void ) { } +void +FGViewer::init () +{ + if ( _from_model ) + _location = (SGLocation *) globals->get_aircraft_model()->get3DModel()->getSGLocation(); + else + _location = new SGLocation; -// Update the view parameters -void FGViewer::update() { - FG_LOG( FG_VIEW, FG_ALERT, "Shouldn't ever see this" ); - exit(-1); + if ( _type == FG_LOOKAT ) { + if ( _at_model ) + _target_location = (SGLocation *) globals->get_aircraft_model()->get3DModel()->getSGLocation(); + else + _target_location = (SGLocation *) new SGLocation; + } } +void +FGViewer::bind () +{ +} -// Destructor -FGViewer::~FGViewer( void ) { +void +FGViewer::unbind () +{ +} + +void +FGViewer::setType ( int type ) +{ + if (type == 0) + _type = FG_LOOKFROM; + if (type == 1) + _type = FG_LOOKAT; +} + +void +FGViewer::setInternal ( bool internal ) +{ + _internal = internal; +} + +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; + _offset_m.x() = x_offset_m; +} + +void +FGViewer::setYOffset_m (double y_offset_m) +{ + _dirty = true; + _offset_m.y() = y_offset_m; +} + +void +FGViewer::setZOffset_m (double z_offset_m) +{ + _dirty = true; + _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; + _offset_m.x() = x_offset_m; + _offset_m.y() = y_offset_m; + _offset_m.z() = 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; +} + +// 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(); + } + + SGGeod geodEyePoint = SGGeod::fromCart(_absolute_view_pos); + geodEyePoint.setElevationM(0); + _zero_elev = SGVec3d::fromGeod(geodEyePoint); + + SGQuatd hlOr = SGQuatd::fromLonLat(geodEyePoint); + _surface_south = toVec3f(hlOr.backTransform(-SGVec3d::e1())); + _surface_east = toVec3f(hlOr.backTransform(SGVec3d::e2())); + _world_up = toVec3f(hlOr.backTransform(-SGVec3d::e3())); + + // 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(); + } + + set_clean(); +} + +// recalculate for LookFrom view type... +void +FGViewer::recalcLookFrom () +{ + // Update location data ... + if ( !_from_model ) { + _location->setPosition( _lon_deg, _lat_deg, _alt_ft ); + _location->setOrientation( _roll_deg, _pitch_deg, _heading_deg ); + _location->getTransformMatrix(); + } + double lat = _location->getLatitude_deg(); + double lon = _location->getLongitude_deg(); + double alt = _location->getAltitudeASL_ft(); + double head = _location->getHeading_deg(); + double pitch = _location->getPitch_deg(); + double roll = _location->getRoll_deg(); + if ( !_from_model ) { + // update from our own data... + dampEyeData(roll, pitch, head); + } + + // 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 ) { + geodTargetPos = SGGeod::fromDegFt(_target_location->getLongitude_deg(), + _target_location->getLatitude_deg(), + _target_location->getAltitudeASL_ft()); + double head = _target_location->getHeading_deg(); + double pitch = _target_location->getPitch_deg(); + double roll = _target_location->getRoll_deg(); + geodTargetOr = SGQuatd::fromYawPitchRollDeg(head, pitch, roll); + } else { + dampEyeData(_target_roll_deg, _target_pitch_deg, _target_heading_deg); + _target_location->setPosition( _target_lon_deg, _target_lat_deg, _target_alt_ft ); + _target_location->setOrientation( _target_roll_deg, _target_pitch_deg, _target_heading_deg ); + _target_location->getTransformMatrix(); + + // 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 ) { + geodEyePos = SGGeod::fromDegFt(_location->getLongitude_deg(), + _location->getLatitude_deg(), + _location->getAltitudeASL_ft()); + double head = _location->getHeading_deg(); + double pitch = _location->getPitch_deg(); + double roll = _location->getRoll_deg(); + geodEyeOr = SGQuatd::fromYawPitchRollDeg(head, pitch, roll); + } else { + dampEyeData(_roll_deg, _pitch_deg, _heading_deg); + _location->setPosition( _lon_deg, _lat_deg, _alt_ft ); + _location->setOrientation( _roll_deg, _pitch_deg, _heading_deg ); + _location->getTransformMatrix(); + + // 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; + } + + 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; + } + + 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 +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*_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*_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*_aspect_ratio_multiplier)) + * SG_RADIANS_TO_DEGREES * 2; + } else { + // v_fov == fov + return _fov_deg; + } + default: + assert(false); + } + return 0.0; +} + +void +FGViewer::update (double dt) +{ + _damp_sync += 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 ); + } + } + } + + + 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()); }