#include <AIModel/AIManager.hxx>
+const double SubmodelSystem::lbs_to_slugs = 0.031080950172;
+
SubmodelSystem::SubmodelSystem ()
{
out[0] = out[1] = out[2] = 0;
in[3] = out[3] = 1;
+ string contents_node;
}
SubmodelSystem::~SubmodelSystem ()
_user_pitch_node = fgGetNode("/orientation/pitch-deg", true);
_user_roll_node = fgGetNode("/orientation/roll-deg", true);
_user_yaw_node = fgGetNode("/orientation/yaw-deg", true);
+ _user_alpha_node = fgGetNode("/orientation/alpha-deg", true);
_user_speed_node = fgGetNode("/velocities/uBody-fps", true);
_user_wind_from_east_node = fgGetNode("/environment/wind-from-east-fps",true);
_user_wind_from_north_node = fgGetNode("/environment/wind-from-north-fps",true);
+ _user_speed_down_fps_node = fgGetNode("/velocities/speed-down-fps",true);
+ _user_speed_east_fps_node = fgGetNode("/velocities/speed-east-fps",true);
+ _user_speed_north_fps_node = fgGetNode("/velocities/speed-north-fps",true);
+
ai = (FGAIManager*)globals->get_subsystem("ai_model");
if ((*submodel_iterator)->count != 0) {
release( (*submodel_iterator), dt);
}
- }
+ } else {
+ (*submodel_iterator)->first_time = true;
+ }
++submodel_iterator;
}
if (sm->timer < sm->delay) return false;
sm->timer = 0.0;
+ if (sm->first_time) {
+ dt = 0.0;
+ sm->first_time = false;
+ }
+
transform(sm); // calculate submodel's initial conditions in world-coordinates
- //cout << "Creating a submodel." << endl;
FGAIModelEntity entity;
entity.path = sm->model.c_str();
entity.altitude = IC.alt;
entity.azimuth = IC.azimuth;
entity.elevation = IC.elevation;
+ entity.roll = IC.roll;
entity.speed = IC.speed;
entity.eda = sm->drag_area;
entity.life = sm->life;
entity.wind_from_east = IC.wind_from_east;
entity.wind_from_north = IC.wind_from_north;
entity.wind = sm->wind;
- int rval = ai->createBallistic( &entity );
-
- //cout << "Submodel created." << endl;
+ entity.cd = sm->cd;
+ entity.mass = IC.mass;
+ ai->createBallistic( &entity );
+
if (sm->count > 0) (sm->count)--;
return true;
void
SubmodelSystem::load ()
{
+
int i;
SGPropertyNode *path = fgGetNode("/sim/systems/submodels/path");
SGPropertyNode root;
sm->trigger = fgGetNode(entry_node->getStringValue("trigger", "none"), true);
sm->name = entry_node->getStringValue("name", "none_defined");
sm->model = entry_node->getStringValue("model", "Models/Geometry/rocket.ac");
- sm->speed = entry_node->getDoubleValue("speed", 0.0);
+ sm->speed = entry_node->getDoubleValue("speed", 2329.4 );
sm->repeat = entry_node->getBoolValue ("repeat", false);
sm->delay = entry_node->getDoubleValue("delay", 0.25);
sm->count = entry_node->getIntValue ("count", 1);
sm->z_offset = entry_node->getDoubleValue("z-offset", 0.0);
sm->yaw_offset = entry_node->getDoubleValue("yaw-offset", 0.0);
sm->pitch_offset = entry_node->getDoubleValue("pitch-offset", 0.0);
- sm->drag_area = entry_node->getDoubleValue("eda", 0.007);
+ sm->drag_area = entry_node->getDoubleValue("eda", 0.034);
sm->life = entry_node->getDoubleValue("life", 900.0);
sm->buoyancy = entry_node->getDoubleValue("buoyancy", 0);
sm->wind = entry_node->getBoolValue ("wind", false);
+ sm->first_time = false;
+ sm->cd = entry_node->getDoubleValue("cd", 0.193);
+ sm->weight = entry_node->getDoubleValue("weight", 0.25);
+ sm->contents_node = fgGetNode(entry_node->getStringValue("contents", "none"), true);
sm->trigger->setBoolValue(false);
sm->timer = sm->delay;
-
+
+ sm->contents = sm->contents_node->getDoubleValue();
+
sm->prop = fgGetNode("/systems/submodels/submodel", i, true);
sm->prop->tie("count", SGRawValuePointer<int>(&(sm->count)));
-// in[0] = sm->x_offset;
-// in[1] = sm->y_offset;
-// in[2] = sm->z_offset;
-
-
+// sm->prop->tie("contents", SGRawValuePointer<double>(&(sm->contents)));
+// sm->prop->tie("contents path", SGRawValuePointer<const char *>(&(sm->contents_node)));
submodels.push_back( sm );
}
submodel_iterator = submodels.begin();
- // cout << submodels.size() << " submodels read." << endl;
+
}
SubmodelSystem::transform( submodel* sm)
{
- // get initial conditions
+// get initial conditions
+
+// get the weight of the contents (lbs) and convert to mass (slugs)
+ sm->contents = sm->contents_node->getDoubleValue();
+
+ IC.mass = (sm->weight + sm->contents) * lbs_to_slugs;;
+// cout << IC.mass << endl;
+
+// set contents to 0 in the parent
+ sm->contents_node->setDoubleValue(0);
IC.lat = _user_lat_node->getDoubleValue();
- IC.lon = _user_lon_node->getDoubleValue();
+ IC.lon = _user_lon_node->getDoubleValue();
IC.alt = _user_alt_node->getDoubleValue();
- IC.roll = - _user_roll_node->getDoubleValue(); // rotation about x axis
- IC.elevation = _user_pitch_node->getDoubleValue(); // rotation about y axis
+ IC.roll = _user_roll_node->getDoubleValue(); // rotation about x axis
+ IC.elevation = _user_pitch_node->getDoubleValue(); // rotation about y axis
IC.azimuth = _user_heading_node->getDoubleValue(); // rotation about z axis
- IC.speed = _user_speed_node->getDoubleValue() + sm->speed;
+ IC.speed = _user_speed_node->getDoubleValue();
IC.wind_from_east = _user_wind_from_east_node->getDoubleValue();
IC.wind_from_north = _user_wind_from_north_node->getDoubleValue();
+ IC.speed_down_fps = _user_speed_down_fps_node->getDoubleValue();
+ IC.speed_east_fps = _user_speed_east_fps_node->getDoubleValue();
+ IC.speed_north_fps = _user_speed_north_fps_node->getDoubleValue();
+
+
in[0] = sm->x_offset;
in[1] = sm->y_offset;
in[2] = sm->z_offset;
-
-
+
// pre-process the trig functions
- cosRx = cos(IC.roll * SG_DEGREES_TO_RADIANS);
- sinRx = sin(IC.roll * SG_DEGREES_TO_RADIANS);
- cosRy = cos(IC.elevation * SG_DEGREES_TO_RADIANS);
- sinRy = sin(IC.elevation * SG_DEGREES_TO_RADIANS);
+ cosRx = cos(-IC.roll * SG_DEGREES_TO_RADIANS);
+ sinRx = sin(-IC.roll * SG_DEGREES_TO_RADIANS);
+ cosRy = cos(-IC.elevation * SG_DEGREES_TO_RADIANS);
+ sinRy = sin(-IC.elevation * SG_DEGREES_TO_RADIANS);
cosRz = cos(IC.azimuth * SG_DEGREES_TO_RADIANS);
sinRz = sin(IC.azimuth * SG_DEGREES_TO_RADIANS);
-
// set up the transform matrix
- trans[0][0] = cosRy * cosRz;
- trans[0][1] = -1 * cosRx * sinRz + sinRx * sinRy * cosRz ;
- trans[0][2] = sinRx * sinRz + cosRx * sinRy * cosRz;
+ trans[0][0] = cosRy * cosRz;
+ trans[0][1] = -1 * cosRx * sinRz + sinRx * sinRy * cosRz ;
+ trans[0][2] = sinRx * sinRz + cosRx * sinRy * cosRz;
- trans[1][0] = cosRy * sinRz;
- trans[1][1] = cosRx * cosRz + sinRx * sinRy * sinRz;
- trans[1][2] = -1 * sinRx * cosRx + cosRx * sinRy * sinRz;
+ trans[1][0] = cosRy * sinRz;
+ trans[1][1] = cosRx * cosRz + sinRx * sinRy * sinRz;
+ trans[1][2] = -1 * sinRx * cosRx + cosRx * sinRy * sinRz;
- trans[2][0] = -1 * sinRy;
- trans[2][1] = sinRx * cosRy;
- trans[2][2] = cosRx * cosRy;
+ trans[2][0] = -1 * sinRy;
+ trans[2][1] = sinRx * cosRy;
+ trans[2][2] = cosRx * cosRy;
// multiply the input and transform matrices
-// for( int i=0; i<4; i++) {
-// for( int j=0; j<4; j++ ) {
-// out[i] += in[j] * trans[i][j];
-// }
-// }
+ out[0] = in[0] * trans[0][0] + in[1] * trans[0][1] + in[2] * trans[0][2];
+ out[1] = in[0] * trans[1][0] + in[1] * trans[1][1] + in[2] * trans[1][2];
+ out[2] = in[0] * trans[2][0] + in[1] * trans[2][1] + in[2] * trans[2][2];
+
+ // convert ft to degrees of latitude
+ out[0] = out[0] /(366468.96 - 3717.12 * cos(IC.lat * SG_DEGREES_TO_RADIANS));
+
+ // convert ft to degrees of longitude
+ out[1] = out[1] /(365228.16 * cos(IC.lat * SG_DEGREES_TO_RADIANS));
-out[0] = in[0] * trans[0][0] + in[1] * trans[0][1] + in[2] * trans[0][2];
-out[1] = in[0] * trans[1][0] + in[1] * trans[1][1] + in[2] * trans[1][2];
-out[2] = in[0] * trans[2][0] + in[1] * trans[2][1] + in[2] * trans[2][2];
+ // set submodel initial position
+ IC.lat += out[0];
+ IC.lon += out[1];
+ IC.alt += out[2];
-// convert ft to degrees of latitude
+ // get aircraft velocity vector angles in XZ and XY planes
+ //double alpha = _user_alpha_node->getDoubleValue();
+ //double velXZ = IC.elevation - alpha * cosRx;
+ //double velXY = IC.azimuth - (IC.elevation - alpha * sinRx);
+
+ // Get submodel initial velocity vector angles in XZ and XY planes.
+ // This needs to be fixed. This vector should be added to aircraft's vector.
+ IC.elevation += (sm->yaw_offset * sinRx) + (sm->pitch_offset * cosRx);
+ IC.azimuth += (sm->yaw_offset * cosRx) - (sm->pitch_offset * sinRx);
+
+ // For now assume vector is close to airplane's vector. This needs to be fixed.
+ //IC.speed += ;
- out[0] = out[0] /(366468.96 - 3717.12 * cos(IC.lat * SG_DEGREES_TO_RADIANS));
+ // calcuate the total speed north
-// convert ft to degrees of longitude
+ IC.total_speed_north = sm->speed * cos(IC.elevation*SG_DEGREES_TO_RADIANS)*
+ cos(IC.azimuth*SG_DEGREES_TO_RADIANS) + IC.speed_north_fps;
- out[1] = out[1] /(365228.16 * cos(IC.lat * SG_DEGREES_TO_RADIANS));
+ // calculate the total speed east
+ IC.total_speed_east = sm->speed * cos(IC.elevation*SG_DEGREES_TO_RADIANS)*
+ sin(IC.azimuth*SG_DEGREES_TO_RADIANS) + IC.speed_east_fps;
- IC.lat += out[0];
- IC.lon += out[1];
- IC.alt += out[2];
- IC.elevation += sm->pitch_offset;
- IC.azimuth += sm->yaw_offset;
+ // calculate the total speed down
+
+ IC.total_speed_down = sm->speed * -sin(IC.elevation*SG_DEGREES_TO_RADIANS) +
+ IC.speed_down_fps;
+ // re-calculate speed, elevation and azimuth
+
+ IC.speed = sqrt( IC.total_speed_north * IC.total_speed_north +
+ IC.total_speed_east * IC.total_speed_east +
+ IC.total_speed_down * IC.total_speed_down);
+
+ IC.azimuth = atan(IC.total_speed_east/IC.total_speed_north) * SG_RADIANS_TO_DEGREES;
+
+ // rationalise the output
+
+ if (IC.total_speed_north <= 0){
+ IC.azimuth = 180 + IC.azimuth;
+ }
+ else{
+ if(IC.total_speed_east <= 0){
+ IC.azimuth = 360 + IC.azimuth;
+ }
+ }
+
+ IC.elevation = -atan(IC.total_speed_down/sqrt(IC.total_speed_north *
+ IC.total_speed_north +
+ IC.total_speed_east * IC.total_speed_east)) * SG_RADIANS_TO_DEGREES;
}
// end of submodel.cxx
+
+
+
projects / flightgear.git / blobdiff