// viewmgr.cxx -- class for managing all the views in the flightgear world.
//
// Written by Curtis Olson, started October 2000.
+// partially rewritten by Jim Wilson March 2002
//
-// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 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
//
// 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 "viewmgr.hxx"
+#include <string.h> // strcmp
+
+#include <simgear/compiler.h>
+#include <simgear/sound/soundmgr_openal.hxx>
+#include <Model/acmodel.hxx>
+#include <Main/viewer.hxx>
+#include <Main/fg_props.hxx>
// Constructor
-FGViewMgr::FGViewMgr( void ) {
+FGViewMgr::FGViewMgr( void ) :
+ axis_long(0),
+ axis_lat(0),
+ view_number(fgGetNode("/sim/current-view/view-number", true)),
+ config_list(fgGetNode("/sim", true)->getChildren("view")),
+ current(0)
+{
+ smgr = globals->get_soundmgr();
}
-
// Destructor
FGViewMgr::~FGViewMgr( void ) {
}
+
+void
+FGViewMgr::init ()
+{
+ double aspect_ratio_multiplier
+ = fgGetDouble("/sim/current-view/aspect-ratio-multiplier");
+
+ for (unsigned int i = 0; i < config_list.size(); i++) {
+ SGPropertyNode *n = config_list[i];
+
+ // find out if this is an internal view (e.g. in cockpit, low near plane)
+ bool internal = n->getBoolValue("internal", false);
+
+ // FIXME:
+ // this is assumed to be an aircraft model...we will need to read
+ // model-from-type as well.
+
+ // find out if this is a model we are looking from...
+ bool from_model = n->getBoolValue("config/from-model");
+ int from_model_index = n->getIntValue("config/from-model-idx");
+
+ double x_offset_m = n->getDoubleValue("config/x-offset-m");
+ double y_offset_m = n->getDoubleValue("config/y-offset-m");
+ double z_offset_m = n->getDoubleValue("config/z-offset-m");
+
+ double heading_offset_deg = n->getDoubleValue("config/heading-offset-deg");
+ n->setDoubleValue("config/heading-offset-deg", heading_offset_deg);
+ double pitch_offset_deg = n->getDoubleValue("config/pitch-offset-deg");
+ n->setDoubleValue("config/pitch-offset-deg", pitch_offset_deg);
+ double roll_offset_deg = n->getDoubleValue("config/roll-offset-deg");
+ n->setDoubleValue("config/roll-offset-deg", roll_offset_deg);
+
+ double fov_deg = n->getDoubleValue("config/default-field-of-view-deg");
+ double near_m = n->getDoubleValue("config/ground-level-nearplane-m");
+
+ // supporting two types "lookat" = 1 and "lookfrom" = 0
+ const char *type = n->getStringValue("type");
+ if (!strcmp(type, "lookat")) {
+
+ bool at_model = n->getBoolValue("config/at-model");
+ int at_model_index = n->getIntValue("config/at-model-idx");
+
+ double damp_roll = n->getDoubleValue("config/at-model-roll-damping");
+ double damp_pitch = n->getDoubleValue("config/at-model-pitch-damping");
+ double damp_heading = n->getDoubleValue("config/at-model-heading-damping");
+
+ double target_x_offset_m = n->getDoubleValue("config/target-x-offset-m");
+ double target_y_offset_m = n->getDoubleValue("config/target-y-offset-m");
+ double target_z_offset_m = n->getDoubleValue("config/target-z-offset-m");
+
+ add_view(new FGViewer ( FG_LOOKAT, from_model, from_model_index,
+ at_model, at_model_index,
+ damp_roll, damp_pitch, damp_heading,
+ x_offset_m, y_offset_m,z_offset_m,
+ heading_offset_deg, pitch_offset_deg,
+ roll_offset_deg, fov_deg, aspect_ratio_multiplier,
+ target_x_offset_m, target_y_offset_m,
+ target_z_offset_m, near_m, internal ));
+ } else {
+ add_view(new FGViewer ( FG_LOOKFROM, from_model, from_model_index,
+ false, 0, 0.0, 0.0, 0.0,
+ x_offset_m, y_offset_m, z_offset_m,
+ heading_offset_deg, pitch_offset_deg,
+ roll_offset_deg, fov_deg, aspect_ratio_multiplier,
+ 0, 0, 0, near_m, internal ));
+ }
+ }
+
+ copyToCurrent();
+}
+
+void
+FGViewMgr::reinit ()
+{
+ // reset offsets and fov to configuration defaults
+ for (unsigned int i = 0; i < config_list.size(); i++) {
+ SGPropertyNode *n = config_list[i];
+ setView(i);
+
+ fgSetDouble("/sim/current-view/x-offset-m",
+ n->getDoubleValue("config/x-offset-m"));
+ fgSetDouble("/sim/current-view/y-offset-m",
+ n->getDoubleValue("config/y-offset-m"));
+ fgSetDouble("/sim/current-view/z-offset-m",
+ n->getDoubleValue("config/z-offset-m"));
+ fgSetDouble("/sim/current-view/pitch-offset-deg",
+ n->getDoubleValue("config/pitch-offset-deg"));
+ fgSetDouble("/sim/current-view/heading-offset-deg",
+ n->getDoubleValue("config/heading-offset-deg"));
+ fgSetDouble("/sim/current-view/roll-offset-deg",
+ n->getDoubleValue("config/roll-offset-deg"));
+
+ double fov_deg = n->getDoubleValue("config/default-field-of-view-deg");
+ if (fov_deg < 10.0)
+ fov_deg = 55.0;
+ fgSetDouble("/sim/current-view/field-of-view", fov_deg);
+
+ // target offsets for lookat mode only...
+ fgSetDouble("/sim/current-view/target-x-offset-m",
+ n->getDoubleValue("config/target-x-offset-m"));
+ fgSetDouble("/sim/current-view/target-y-offset-m",
+ n->getDoubleValue("config/target-y-offset-m"));
+ fgSetDouble("/sim/current-view/target-z-offset-m",
+ n->getDoubleValue("config/target-z-offset-m"));
+ }
+ setView(0);
+}
+
+typedef double (FGViewMgr::*double_getter)() const;
+
+void
+FGViewMgr::bind ()
+{
+ // these are bound to the current view properties
+ fgTie("/sim/current-view/heading-offset-deg", this,
+ &FGViewMgr::getViewHeadingOffset_deg,
+ &FGViewMgr::setViewHeadingOffset_deg);
+ fgSetArchivable("/sim/current-view/heading-offset-deg");
+ fgTie("/sim/current-view/goal-heading-offset-deg", this,
+ &FGViewMgr::getViewGoalHeadingOffset_deg,
+ &FGViewMgr::setViewGoalHeadingOffset_deg);
+ fgSetArchivable("/sim/current-view/goal-heading-offset-deg");
+ fgTie("/sim/current-view/pitch-offset-deg", this,
+ &FGViewMgr::getViewPitchOffset_deg,
+ &FGViewMgr::setViewPitchOffset_deg);
+ fgSetArchivable("/sim/current-view/pitch-offset-deg");
+ fgTie("/sim/current-view/goal-pitch-offset-deg", this,
+ &FGViewMgr::getGoalViewPitchOffset_deg,
+ &FGViewMgr::setGoalViewPitchOffset_deg);
+ fgSetArchivable("/sim/current-view/goal-pitch-offset-deg");
+ fgTie("/sim/current-view/roll-offset-deg", this,
+ &FGViewMgr::getViewRollOffset_deg,
+ &FGViewMgr::setViewRollOffset_deg);
+ fgSetArchivable("/sim/current-view/roll-offset-deg");
+ fgTie("/sim/current-view/goal-roll-offset-deg", this,
+ &FGViewMgr::getGoalViewRollOffset_deg,
+ &FGViewMgr::setGoalViewRollOffset_deg);
+ fgSetArchivable("/sim/current-view/goal-roll-offset-deg");
+
+ fgTie("/sim/current-view/view-number", this,
+ &FGViewMgr::getView, &FGViewMgr::setView);
+ fgSetArchivable("/sim/current-view/view-number", FALSE);
+
+ fgTie("/sim/current-view/axes/long", this,
+ (double_getter)0, &FGViewMgr::setViewAxisLong);
+ fgSetArchivable("/sim/current-view/axes/long");
+
+ fgTie("/sim/current-view/axes/lat", this,
+ (double_getter)0, &FGViewMgr::setViewAxisLat);
+ fgSetArchivable("/sim/current-view/axes/lat");
+
+ fgTie("/sim/current-view/field-of-view", this,
+ &FGViewMgr::getFOV_deg, &FGViewMgr::setFOV_deg);
+ fgSetArchivable("/sim/current-view/field-of-view");
+
+ fgTie("/sim/current-view/aspect-ratio-multiplier", this,
+ &FGViewMgr::getARM_deg, &FGViewMgr::setARM_deg);
+ fgSetArchivable("/sim/current-view/field-of-view");
+
+ fgTie("/sim/current-view/ground-level-nearplane-m", this,
+ &FGViewMgr::getNear_m, &FGViewMgr::setNear_m);
+ fgSetArchivable("/sim/current-view/ground-level-nearplane-m");
+
+ SGPropertyNode *n = fgGetNode("/sim/current-view", true);
+ n->tie("viewer-x-m", SGRawValuePointer<double>(&abs_viewer_position[0]));
+ n->tie("viewer-y-m", SGRawValuePointer<double>(&abs_viewer_position[1]));
+ n->tie("viewer-z-m", SGRawValuePointer<double>(&abs_viewer_position[2]));
+}
+
+void
+FGViewMgr::unbind ()
+{
+ // FIXME:
+ // need to redo these bindings to the new locations (move to viewer?)
+ fgUntie("/sim/current-view/heading-offset-deg");
+ fgUntie("/sim/current-view/goal-heading-offset-deg");
+ fgUntie("/sim/current-view/pitch-offset-deg");
+ fgUntie("/sim/current-view/goal-pitch-offset-deg");
+ fgUntie("/sim/current-view/field-of-view");
+ fgUntie("/sim/current-view/aspect-ratio-multiplier");
+ fgUntie("/sim/current-view/view-number");
+ fgUntie("/sim/current-view/axes/long");
+ fgUntie("/sim/current-view/axes/lat");
+ fgUntie("/sim/current-view/ground-level-nearplane-m");
+ fgUntie("/sim/current-view/viewer-x-m");
+ fgUntie("/sim/current-view/viewer-y-m");
+ fgUntie("/sim/current-view/viewer-z-m");
+}
+
+void
+FGViewMgr::update (double dt)
+{
+ FGViewer * view = get_current_view();
+ if (view == 0)
+ return;
+
+ FGViewer *loop_view = (FGViewer *)get_view(current);
+ SGPropertyNode *n = config_list[current];
+ double lon_deg, lat_deg, alt_ft, roll_deg, pitch_deg, heading_deg;
+
+ // Set up view location and orientation
+
+ if (!n->getBoolValue("config/from-model")) {
+ lon_deg = fgGetDouble(n->getStringValue("config/eye-lon-deg-path"));
+ lat_deg = fgGetDouble(n->getStringValue("config/eye-lat-deg-path"));
+ alt_ft = fgGetDouble(n->getStringValue("config/eye-alt-ft-path"));
+ roll_deg = fgGetDouble(n->getStringValue("config/eye-roll-deg-path"));
+ pitch_deg = fgGetDouble(n->getStringValue("config/eye-pitch-deg-path"));
+ heading_deg = fgGetDouble(n->getStringValue("config/eye-heading-deg-path"));
+
+ loop_view->setPosition(lon_deg, lat_deg, alt_ft);
+ loop_view->setOrientation(roll_deg, pitch_deg, heading_deg);
+ } else {
+ // force recalc in viewer
+ loop_view->set_dirty();
+ }
+
+ // if lookat (type 1) then get target data...
+ if (loop_view->getType() == FG_LOOKAT) {
+ if (!n->getBoolValue("config/from-model")) {
+ lon_deg = fgGetDouble(n->getStringValue("config/target-lon-deg-path"));
+ lat_deg = fgGetDouble(n->getStringValue("config/target-lat-deg-path"));
+ alt_ft = fgGetDouble(n->getStringValue("config/target-alt-ft-path"));
+ roll_deg = fgGetDouble(n->getStringValue("config/target-roll-deg-path"));
+ pitch_deg = fgGetDouble(n->getStringValue("config/target-pitch-deg-path"));
+ heading_deg = fgGetDouble(n->getStringValue("config/target-heading-deg-path"));
+
+ loop_view->setTargetPosition(lon_deg, lat_deg, alt_ft);
+ loop_view->setTargetOrientation(roll_deg, pitch_deg, heading_deg);
+ } else {
+ loop_view->set_dirty();
+ }
+ }
+
+ setViewXOffset_m(fgGetDouble("/sim/current-view/x-offset-m"));
+ setViewYOffset_m(fgGetDouble("/sim/current-view/y-offset-m"));
+ setViewZOffset_m(fgGetDouble("/sim/current-view/z-offset-m"));
+
+ setViewTargetXOffset_m(fgGetDouble("/sim/current-view/target-x-offset-m"));
+ setViewTargetYOffset_m(fgGetDouble("/sim/current-view/target-y-offset-m"));
+ setViewTargetZOffset_m(fgGetDouble("/sim/current-view/target-z-offset-m"));
+
+ // Update the current view
+ do_axes();
+ view->update(dt);
+ abs_viewer_position = loop_view->getViewPosition();
+
+ // update audio listener values
+ // set the viewer posotion in Cartesian coordinates in meters
+ smgr->set_position( abs_viewer_position );
+ smgr->set_orientation(loop_view->getViewOrientation(),
+ loop_view->getViewOrientationOffset());
+
+ // get the model velocity for the in-cockpit view
+ SGVec3d velocity = SGVec3d(0,0,0);
+ if ( !stationary() ) {
+ FGAircraftModel *aircraft = globals->get_aircraft_model();
+ velocity = aircraft->getVelocity();
+ }
+ smgr->set_velocity(velocity);
+}
+
+void
+FGViewMgr::copyToCurrent()
+{
+ SGPropertyNode *n = config_list[current];
+ fgSetString("/sim/current-view/name", n->getStringValue("name"));
+ fgSetString("/sim/current-view/type", n->getStringValue("type"));
+
+ // copy certain view config data for default values
+ fgSetDouble("/sim/current-view/config/heading-offset-deg",
+ n->getDoubleValue("config/default-heading-offset-deg"));
+ fgSetDouble("/sim/current-view/config/pitch-offset-deg",
+ n->getDoubleValue("config/pitch-offset-deg"));
+ fgSetDouble("/sim/current-view/config/roll-offset-deg",
+ n->getDoubleValue("config/roll-offset-deg"));
+ fgSetDouble("/sim/current-view/config/default-field-of-view-deg",
+ n->getDoubleValue("config/default-field-of-view-deg"));
+ fgSetBool("/sim/current-view/config/from-model",
+ n->getBoolValue("config/from-model"));
+
+ // copy view data
+ fgSetDouble("/sim/current-view/x-offset-m", getViewXOffset_m());
+ fgSetDouble("/sim/current-view/y-offset-m", getViewYOffset_m());
+ fgSetDouble("/sim/current-view/z-offset-m", getViewZOffset_m());
+
+ fgSetDouble("/sim/current-view/goal-heading-offset-deg",
+ get_current_view()->getGoalHeadingOffset_deg());
+ fgSetDouble("/sim/current-view/goal-pitch-offset-deg",
+ get_current_view()->getGoalPitchOffset_deg());
+ fgSetDouble("/sim/current-view/goal-roll-offset-deg",
+ get_current_view()->getRollOffset_deg());
+ fgSetDouble("/sim/current-view/heading-offset-deg",
+ get_current_view()->getHeadingOffset_deg());
+ fgSetDouble("/sim/current-view/pitch-offset-deg",
+ get_current_view()->getPitchOffset_deg());
+ fgSetDouble("/sim/current-view/roll-offset-deg",
+ get_current_view()->getRollOffset_deg());
+ fgSetDouble("/sim/current-view/target-x-offset-m",
+ get_current_view()->getTargetXOffset_m());
+ fgSetDouble("/sim/current-view/target-y-offset-m",
+ get_current_view()->getTargetYOffset_m());
+ fgSetDouble("/sim/current-view/target-z-offset-m",
+ get_current_view()->getTargetZOffset_m());
+ fgSetBool("/sim/current-view/internal",
+ get_current_view()->getInternal());
+}
+
+void FGViewMgr::clear()
+{
+ views.clear();
+}
+
+FGViewer*
+FGViewMgr::get_current_view()
+{
+ if ( current < (int)views.size() ) {
+ return views[current];
+ } else {
+ return NULL;
+ }
+}
+
+const FGViewer*
+FGViewMgr::get_current_view() const
+{
+ if ( current < (int)views.size() ) {
+ return views[current];
+ } else {
+ return NULL;
+ }
+}
+
+
+FGViewer*
+FGViewMgr::get_view( int i )
+{
+ if ( i < 0 ) { i = 0; }
+ if ( i >= (int)views.size() ) { i = views.size() - 1; }
+ return views[i];
+}
+
+const FGViewer*
+FGViewMgr::get_view( int i ) const
+{
+ if ( i < 0 ) { i = 0; }
+ if ( i >= (int)views.size() ) { i = views.size() - 1; }
+ return views[i];
+}
+
+FGViewer*
+FGViewMgr::next_view()
+{
+ setView((current+1 < (int)views.size()) ? (current + 1) : 0);
+ view_number->fireValueChanged();
+ return views[current];
+}
+
+FGViewer*
+FGViewMgr::prev_view()
+{
+ setView((0 < current) ? (current - 1) : (views.size() - 1));
+ view_number->fireValueChanged();
+ return views[current];
+}
+
+void
+FGViewMgr::add_view( FGViewer * v )
+{
+ views.push_back(v);
+ v->init();
+}
+
+double
+FGViewMgr::getViewHeadingOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getHeadingOffset_deg());
+}
+
+void
+FGViewMgr::setViewHeadingOffset_deg (double offset)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setGoalHeadingOffset_deg(offset);
+ view->setHeadingOffset_deg(offset);
+ }
+}
+
+double
+FGViewMgr::getViewGoalHeadingOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getGoalHeadingOffset_deg());
+}
+
+void
+FGViewMgr::setViewGoalHeadingOffset_deg (double offset)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setGoalHeadingOffset_deg(offset);
+}
+
+double
+FGViewMgr::getViewPitchOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getPitchOffset_deg());
+}
+
+void
+FGViewMgr::setViewPitchOffset_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setGoalPitchOffset_deg(tilt);
+ view->setPitchOffset_deg(tilt);
+ }
+}
+
+double
+FGViewMgr::getGoalViewPitchOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getGoalPitchOffset_deg());
+}
+
+void
+FGViewMgr::setGoalViewPitchOffset_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setGoalPitchOffset_deg(tilt);
+}
+
+double
+FGViewMgr::getViewRollOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getRollOffset_deg());
+}
+
+void
+FGViewMgr::setViewRollOffset_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setGoalRollOffset_deg(tilt);
+ view->setRollOffset_deg(tilt);
+ }
+}
+
+double
+FGViewMgr::getGoalViewRollOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getGoalRollOffset_deg());
+}
+
+void
+FGViewMgr::setGoalViewRollOffset_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setGoalRollOffset_deg(tilt);
+}
+
+double
+FGViewMgr::getViewXOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getXOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewXOffset_m (double x)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setXOffset_m(x);
+ }
+}
+
+double
+FGViewMgr::getViewYOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getYOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewYOffset_m (double y)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setYOffset_m(y);
+ }
+}
+
+double
+FGViewMgr::getViewZOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getZOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewZOffset_m (double z)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setZOffset_m(z);
+ }
+}
+
+bool
+FGViewMgr::stationary () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ if (((FGViewer *)view)->getXOffset_m() == 0.0 &&
+ ((FGViewer *)view)->getYOffset_m() == 0.0 &&
+ ((FGViewer *)view)->getZOffset_m() == 0.0)
+ return true;
+ }
+
+ return false;
+}
+
+double
+FGViewMgr::getViewTargetXOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getTargetXOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewTargetXOffset_m (double x)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setTargetXOffset_m(x);
+ }
+}
+
+double
+FGViewMgr::getViewTargetYOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getTargetYOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewTargetYOffset_m (double y)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setTargetYOffset_m(y);
+ }
+}
+
+double
+FGViewMgr::getViewTargetZOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getTargetZOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setViewTargetZOffset_m (double z)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setTargetZOffset_m(z);
+ }
+}
+
+int
+FGViewMgr::getView () const
+{
+ return ( current );
+}
+
+void
+FGViewMgr::setView (int newview)
+{
+ // negative numbers -> set view with node index -newview
+ if (newview < 0) {
+ for (int i = 0; i < (int)config_list.size(); i++) {
+ int index = -config_list[i]->getIndex();
+ if (index == newview)
+ newview = i;
+ }
+ if (newview < 0)
+ return;
+ }
+
+ // if newview number too low wrap to last view...
+ if (newview < 0)
+ newview = (int)views.size() - 1;
+
+ // if newview number to high wrap to zero...
+ if (newview >= (int)views.size())
+ newview = 0;
+
+ // set new view
+ set_view(newview);
+ // copy in view data
+ copyToCurrent();
+
+ // Copy the fdm's position into the SGLocation which is shared with
+ // some views ...
+ globals->get_aircraft_model()->update(0);
+ // Do the update ...
+ update(0);
+}
+
+
+double
+FGViewMgr::getFOV_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->get_fov());
+}
+
+void
+FGViewMgr::setFOV_deg (double fov)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->set_fov(fov);
+}
+
+double
+FGViewMgr::getARM_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->get_aspect_ratio_multiplier());
+}
+
+void
+FGViewMgr::setARM_deg (double aspect_ratio_multiplier)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->set_aspect_ratio_multiplier(aspect_ratio_multiplier);
+}
+
+double
+FGViewMgr::getNear_m () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0.5f : view->getNear_m());
+}
+
+void
+FGViewMgr::setNear_m (double near_m)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setNear_m(near_m);
+}
+
+void
+FGViewMgr::setViewAxisLong (double axis)
+{
+ axis_long = axis;
+}
+
+void
+FGViewMgr::setViewAxisLat (double axis)
+{
+ axis_lat = axis;
+}
+
+void
+FGViewMgr::do_axes ()
+{
+ // Take no action when hat is centered
+ if ( ( axis_long < 0.01 ) &&
+ ( axis_long > -0.01 ) &&
+ ( axis_lat < 0.01 ) &&
+ ( axis_lat > -0.01 )
+ )
+ return;
+
+ double viewDir = 999;
+
+ /* Do all the quick and easy cases */
+ if (axis_long < 0) { // Longitudinal axis forward
+ if (axis_lat == axis_long)
+ viewDir = fgGetDouble("/sim/view/config/front-left-direction-deg");
+ else if (axis_lat == - axis_long)
+ viewDir = fgGetDouble("/sim/view/config/front-right-direction-deg");
+ else if (axis_lat == 0)
+ viewDir = fgGetDouble("/sim/view/config/front-direction-deg");
+ } else if (axis_long > 0) { // Longitudinal axis backward
+ if (axis_lat == - axis_long)
+ viewDir = fgGetDouble("/sim/view/config/back-left-direction-deg");
+ else if (axis_lat == axis_long)
+ viewDir = fgGetDouble("/sim/view/config/back-right-direction-deg");
+ else if (axis_lat == 0)
+ viewDir = fgGetDouble("/sim/view/config/back-direction-deg");
+ } else if (axis_long == 0) { // Longitudinal axis neutral
+ if (axis_lat < 0)
+ viewDir = fgGetDouble("/sim/view/config/left-direction-deg");
+ else if (axis_lat > 0)
+ viewDir = fgGetDouble("/sim/view/config/right-direction-deg");
+ else return; /* And assertion failure maybe? */
+ }
+
+ // Do all the difficult cases
+ if ( viewDir > 900 )
+ viewDir = SGD_RADIANS_TO_DEGREES * atan2 ( -axis_lat, -axis_long );
+ if ( viewDir < -1 ) viewDir += 360;
+
+ get_current_view()->setGoalHeadingOffset_deg(viewDir);
+}
projects / flightgear.git / blobdiff