// 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
//
//
// $Id$
+#include <string.h> // strcmp
+
+#include <plib/sg.h>
#include "viewmgr.hxx"
+#include "fg_props.hxx"
// Constructor
-FGViewMgr::FGViewMgr( void ) {
+FGViewMgr::FGViewMgr( void ) :
+ axis_long(0),
+ axis_lat(0),
+ current(0)
+{
}
// Destructor
FGViewMgr::~FGViewMgr( void ) {
}
+
+void
+FGViewMgr::init ()
+{
+ char stridx [ 20 ];
+ string viewpath, nodepath, strdata;
+ bool from_model = false;
+ bool at_model = false;
+ int from_model_index = 0;
+ int at_model_index = 0;
+ double x_offset_m, y_offset_m, z_offset_m;
+ double near_m;
+
+ for (int i = 0; i < fgGetInt("/sim/number-views"); i++) {
+ viewpath = "/sim/view";
+ sprintf(stridx, "[%d]", i);
+ viewpath += stridx;
+
+ // find out what type of view this is...
+ nodepath = viewpath;
+ nodepath += "/type";
+ strdata = fgGetString(nodepath.c_str());
+
+ // 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...
+ nodepath = viewpath;
+ nodepath += "/config/from-model";
+ from_model = fgGetBool(nodepath.c_str());
+
+ // get model index (which model)
+ if (from_model) {
+ nodepath = viewpath;
+ nodepath += "/config/from-model-idx";
+ from_model_index = fgGetInt(nodepath.c_str());
+ }
+
+ if ( strcmp("lookat",strdata.c_str()) == 0 ) {
+ // find out if this is a model we are looking at...
+ nodepath = viewpath;
+ nodepath += "/config/at-model";
+ at_model = fgGetBool(nodepath.c_str());
+
+ // get model index (which model)
+ if (at_model) {
+ nodepath = viewpath;
+ nodepath += "/config/at-model-idx";
+ at_model_index = fgGetInt(nodepath.c_str());
+ }
+ }
+
+ nodepath = viewpath;
+ nodepath += "/config/x-offset-m";
+ x_offset_m = fgGetDouble(nodepath.c_str());
+ nodepath = viewpath;
+ nodepath += "/config/y-offset-m";
+ y_offset_m = fgGetDouble(nodepath.c_str());
+ nodepath = viewpath;
+ nodepath += "/config/z-offset-m";
+ z_offset_m = fgGetDouble(nodepath.c_str());
+
+ nodepath = viewpath;
+ nodepath += "/config/ground-level-nearplane-m";
+ near_m = fgGetDouble(nodepath.c_str());
+
+ // supporting two types now "lookat" = 1 and "lookfrom" = 0
+ if ( strcmp("lookat",strdata.c_str()) == 0 )
+ add_view(new FGViewer ( FG_LOOKAT, from_model, from_model_index,
+ at_model, at_model_index, x_offset_m, y_offset_m,
+ z_offset_m, near_m ));
+ else
+ add_view(new FGViewer ( FG_LOOKFROM, from_model, from_model_index, false,
+ 0, x_offset_m, y_offset_m, z_offset_m, near_m ));
+
+ }
+
+ copyToCurrent();
+
+}
+
+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::getViewOffset_deg, &FGViewMgr::setViewOffset_deg);
+ fgSetArchivable("/sim/current-view/heading-offset-deg");
+ fgTie("/sim/current-view/goal-heading-offset-deg", this,
+ &FGViewMgr::getGoalViewOffset_deg, &FGViewMgr::setGoalViewOffset_deg);
+ fgSetArchivable("/sim/current-view/goal-heading-offset-deg");
+ fgTie("/sim/current-view/pitch-offset-deg", this,
+ &FGViewMgr::getViewTilt_deg, &FGViewMgr::setViewTilt_deg);
+ fgSetArchivable("/sim/current-view/pitch-offset-deg");
+ fgTie("/sim/current-view/goal-pitch-offset-deg", this,
+ &FGViewMgr::getGoalViewTilt_deg, &FGViewMgr::setGoalViewTilt_deg);
+ fgSetArchivable("/sim/current-view/goal-pitch-offset-deg");
+
+ fgTie("/sim/current-view/axes/long", this,
+ (double_getter)0, &FGViewMgr::setViewAxisLong);
+ fgTie("/sim/current-view/axes/lat", this,
+ (double_getter)0, &FGViewMgr::setViewAxisLat);
+
+ 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/ground-level-nearplane-m", this,
+ &FGViewMgr::getNear_m, &FGViewMgr::setNear_m);
+ fgSetArchivable("/sim/current-view/ground-level-nearplane-m");
+
+}
+
+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/field-of-view");
+ fgUntie("/sim/current-view/axes/long");
+ fgUntie("/sim/current-view/axes/lat");
+}
+
+void
+FGViewMgr::update (double dt)
+{
+ char stridx [20];
+ string viewpath, nodepath;
+ double lon_deg, lat_deg, alt_ft, roll_deg, pitch_deg, heading_deg;
+
+ FGViewer * view = get_current_view();
+ if (view == 0)
+ return;
+
+ //
+ int i = current;
+ viewpath = "/sim/view";
+ sprintf(stridx, "[%d]", i);
+ viewpath += stridx;
+
+
+ FGViewer *loop_view = (FGViewer *)get_view( i );
+
+ // Set up view location and orientation
+
+ nodepath = viewpath;
+ nodepath += "/config/from-model";
+ if (!fgGetBool(nodepath.c_str())) {
+ nodepath = viewpath;
+ nodepath += "/config/eye-lon-deg-path";
+ lon_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/eye-lat-deg-path";
+ lat_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/eye-alt-ft-path";
+ alt_ft = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/eye-roll-deg-path";
+ roll_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/eye-pitch-deg-path";
+ pitch_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/eye-heading-deg-path";
+ heading_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ 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) {
+ nodepath = viewpath;
+ nodepath += "/config/from-model";
+ if (!fgGetBool(nodepath.c_str())) {
+ nodepath = viewpath;
+ nodepath += "/config/target-lon-deg-path";
+ lon_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/target-lat-deg-path";
+ lat_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/target-alt-ft-path";
+ alt_ft = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/target-roll-deg-path";
+ roll_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/target-pitch-deg-path";
+ pitch_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+ nodepath = viewpath;
+ nodepath += "/config/target-heading-deg-path";
+ heading_deg = fgGetDouble(fgGetString(nodepath.c_str()));
+
+ loop_view ->setTargetPosition(lon_deg, lat_deg, alt_ft);
+ loop_view->setTargetOrientation(roll_deg, pitch_deg, heading_deg);
+ } else {
+ loop_view->set_dirty();
+ }
+ }
+ setPilotXOffset_m(fgGetDouble("/sim/current-view/x-offset-m"));
+ setPilotYOffset_m(fgGetDouble("/sim/current-view/y-offset-m"));
+ setPilotZOffset_m(fgGetDouble("/sim/current-view/z-offset-m"));
+
+ // Update the current view
+ do_axes();
+ view->update(dt);
+}
+
+void
+FGViewMgr::copyToCurrent()
+{
+ fgSetDouble("/sim/current-view/x-offset-m", getPilotXOffset_m());
+ fgSetDouble("/sim/current-view/y-offset-m", getPilotYOffset_m());
+ fgSetDouble("/sim/current-view/z-offset-m", getPilotZOffset_m());
+}
+
+
+double
+FGViewMgr::getViewOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getHeadingOffset_deg());
+}
+
+void
+FGViewMgr::setViewOffset_deg (double offset)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setGoalHeadingOffset_deg(offset);
+ view->setHeadingOffset_deg(offset);
+ }
+}
+
+double
+FGViewMgr::getGoalViewOffset_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getGoalHeadingOffset_deg());
+}
+
+void
+FGViewMgr::setGoalViewOffset_deg (double offset)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setGoalHeadingOffset_deg(offset);
+}
+
+double
+FGViewMgr::getViewTilt_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getPitchOffset_deg());
+}
+
+void
+FGViewMgr::setViewTilt_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setGoalPitchOffset_deg(tilt);
+ view->setPitchOffset_deg(tilt);
+ }
+}
+
+double
+FGViewMgr::getGoalViewTilt_deg () const
+{
+ const FGViewer * view = get_current_view();
+ return (view == 0 ? 0 : view->getGoalPitchOffset_deg());
+}
+
+void
+FGViewMgr::setGoalViewTilt_deg (double tilt)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0)
+ view->setGoalPitchOffset_deg(tilt);
+}
+
+double
+FGViewMgr::getPilotXOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getXOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setPilotXOffset_m (double x)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setXOffset_m(x);
+ }
+}
+
+double
+FGViewMgr::getPilotYOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getYOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setPilotYOffset_m (double y)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setYOffset_m(y);
+ }
+}
+
+double
+FGViewMgr::getPilotZOffset_m () const
+{
+ const FGViewer * view = get_current_view();
+ if (view != 0) {
+ return ((FGViewer *)view)->getZOffset_m();
+ } else {
+ return 0;
+ }
+}
+
+void
+FGViewMgr::setPilotZOffset_m (double z)
+{
+ FGViewer * view = get_current_view();
+ if (view != 0) {
+ view->setZOffset_m(z);
+ }
+}
+
+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::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 = 45;
+ else if (axis_lat == - axis_long)
+ viewDir = 315;
+ else if (axis_lat == 0)
+ viewDir = 0;
+ } else if (axis_long > 0) { // Longitudinal axis backward
+ if (axis_lat == - axis_long)
+ viewDir = 135;
+ else if (axis_lat == axis_long)
+ viewDir = 225;
+ else if (axis_lat == 0)
+ viewDir = 180;
+ } else if (axis_long == 0) { // Longitudinal axis neutral
+ if (axis_lat < 0)
+ viewDir = 90;
+ else if (axis_lat > 0)
+ viewDir = 270;
+ 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