struct TrajectoryConstraints tcFast, tcSlow, tcVerySlow;
-/**
- * Vector where all absolute positions of all detected targets are stored.
- */
-std::vector<robot_pos_type> detected_target;
-
/**
* Safe distance for target recognition
*/
return false;
}
-/**
- * Take data from hokuyo and run shape detection on it.
- *
- * Absolute positions of all detected targets centers are stored in alobal variable (vector).
- *
- * @return True if at least one target detected, else false.
- */
-static bool detect_target()
-{
- struct hokuyo_scan_type hokuyo = robot.hokuyo;
-
- Shape_detect sd;
- std::vector<Shape_detect::Arc> arcs;
- sd.prepare(hokuyo.data);
- sd.arc_detect(arcs);
-
- // clear old targets
- detected_target.clear();
-
- if (arcs.size() > 0) {
- robot_pos_type e, target, hok;
-
- robot_get_est_pos(&e.x, &e.y, &e.phi);
-
- double sinus = sin(e.phi);
- double cosinus = cos(e.phi);
-
- // save absolute positions of all detected targets
- for (int i = 0; i < arcs.size(); i++) {
- Shape_detect::Arc *a = &arcs[i];
-
- hok.x = HOKUYO_CENTER_OFFSET_M + (double)a->center.x / 1000.0;
- hok.y = (double)a->center.y / 1000.0;
-
- /* transform target position which is relative to Hokuyo
- center to absolute position in space */
- target.x = (hok.x * cosinus) - (hok.y * sinus) + e.x;
- target.y = (hok.x * sinus) + (hok.y * cosinus) + e.y;
-
- // filter those targets not in playground range
- //if (goal_is_in_playground(target.x, target.y))
- // detected_target.push_back(target);
- }
- }
- return detected_target.size();
-}
-
-/**
- * Calculates point to approach the target.
- *
- * @param target Position of the center of the target.
- * @param approach Pointer to the the intersection point of circle around
- * the target and line between robot center and target.
- */
-void get_approach_point(double xtarget, double ytarget, double *xapproach, double *yapproach, double *phi_approach)
-{
- double xrobot, yrobot, phi;
- double delta;
-
- robot_get_est_pos(&xrobot, &yrobot, &phi);
-
- delta = distance(xrobot, yrobot, xtarget, ytarget);
-
- *xapproach = xtarget - (approach_radius * (xtarget - xrobot) / delta);
- *yapproach = ytarget - (approach_radius * (ytarget - yrobot) / delta);
-
- *phi_approach = get_approach_angle(xtarget, ytarget);
-}
-
-/**
- * Calculates point to approach the target.
- *
- * @param target Position of the center of the target.
- * @return Angle to approach the target form.
- */
-double get_approach_angle(double xtarget, double ytarget)
-{
- double xrobot, yrobot,phi;
-
- robot_get_est_pos(&xrobot, &yrobot, &phi);
-
- return atan2((ytarget - yrobot), (xtarget - xrobot));
-}
-
-
/**
* FSM state for neighborhood observation.
*
switch(FSM_EVENT) {
case EV_ENTRY:
DBG_PRINT_EVENT("survey");
-#if 1 // FIXME just for test
- if (detect_target()) {
-#else
- if (turn_cntr > 1) {
- robot_pos_type target;
- detected_target.clear();
- for (double i = 1; i < 5; i++) {
- target.x = i;
- target.y = i/2.0;
- detected_target.push_back(target);
- }
-#endif
- // target detected, go to the target
- FSM_TRANSITION(approach_target);
- DBG_PRINT_EVENT("Target detected!");
- } else {
- // no target detected in this heading, turn 120°
- robot_get_est_pos(&x, &y, &phi);
- robot_goto_notrans(x, y, TURN(DEG2RAD(120)+phi), &tcSlow);
- turn_cntr++;
- DBG_PRINT_EVENT("no target");
- }
+ // no target detected in this heading, turn 120°
+ robot_get_est_pos(&x, &y, &phi);
+ robot_goto_notrans(x, y, TURN(DEG2RAD(120)+phi), &tcSlow);
+ turn_cntr++;
+ DBG_PRINT_EVENT("no target");
break;
case EV_TIMER:
if (turn_cntr > 2) {
}
}
-/**
- * FSM state for approaching all detected targets.
- *
- * Try to approach target.
- * If approach OK - go to subautomaton and do target recognition, touch and load.
- * On subautomaton return check if target loaded/valid.
- *
- * If target loaded, go home.
- * If target not valid, try next target if any.
- * If approach not succesfull - go to move_around state.
- */
-FSM_STATE(approach_target)
-{
- static int target_cntr = 0;
- int max_target = detected_target.size();
- double x_target, y_tatget;
- double x_approach, y_approach, phi_approach;
-
- switch(FSM_EVENT) {
- case EV_ENTRY:
- DBG_PRINT_EVENT("approaching target");
- x_target = detected_target[target_cntr].x;
- y_tatget = detected_target[target_cntr].y;
- target_cntr++;
-
- printf("target %d / %d\n", target_cntr, max_target);
-
- get_approach_point(x_target, y_tatget, &x_approach, &y_approach, &phi_approach);
- robot_goto_notrans(x_approach, y_approach, ARRIVE_FROM(phi_approach, 0.2), &tcFast);
- break;
- case EV_MOTION_DONE:
- DBG_PRINT_EVENT("target approached");
- SUBFSM_TRANSITION(recognize, NULL);
- break;
- case EV_RETURN:
- if (robot.target_loaded) {
- FSM_TRANSITION(go_home);
- } else if (robot.target_valid) {
- //FIXME target is valid but not loaded - try another approach direction
-
- } else if (!robot.target_valid && (target_cntr < max_target)) {
- // go for next target if any
- FSM_TRANSITION(approach_target);
- } else {
- // go to new point and survey
- FSM_TRANSITION(move_around);
- }
- break;
- case EV_MOTION_ERROR:
- DBG_PRINT_EVENT("can not approach target");
- if (target_cntr < max_target) {
- FSM_TRANSITION(approach_target);
- } else {
- FSM_TRANSITION(move_around);
- }
- break;
- case EV_EXIT:
- target_cntr = 0;
- break;
- }
-}
-
FSM_STATE(move_around)
{
double goalx, goaly;