+#include <cmath>
+#include <list>
+#include <queue>
#include "psp.h"
bool PSPlanner::collide()
{
- return false;
+ std::vector<std::tuple<double, double>> bc;
+ bc.push_back(std::make_tuple(this->cc().lfx(), this->cc().lfy()));
+ bc.push_back(std::make_tuple(this->cc().lrx(), this->cc().lry()));
+ bc.push_back(std::make_tuple(this->cc().rrx(), this->cc().rry()));
+ bc.push_back(std::make_tuple(this->cc().rfx(), this->cc().rfy()));
+ bc.push_back(std::make_tuple(this->cc().lfx(), this->cc().lfy()));
+ std::vector<std::tuple<double, double>> ps;
+ ps.push_back(std::make_tuple(this->ps().x1(), this->ps().y1()));
+ ps.push_back(std::make_tuple(this->ps().x2(), this->ps().y2()));
+ ps.push_back(std::make_tuple(this->ps().x3(), this->ps().y3()));
+ ps.push_back(std::make_tuple(this->ps().x4(), this->ps().y4()));
+ return std::get<0>(::collide(bc, ps));
+}
+
+bool PSPlanner::forward()
+{
+ double heading = this->ps().heading();
+ while (heading < 0) heading += 2 * M_PI;
+ if (!this->ps().parallel())
+ heading -= M_PI / 2;
+ double h = this->gc().h();
+ while (h < 0) h += 2 * M_PI;
+ if (-0.00001 < heading - h && heading - h < 0.00001)
+ return true;
+ else
+ return false;
+}
+
+void PSPlanner::guess_gc()
+{
+}
+
+bool PSPlanner::left()
+{
+ double lfx = this->cc().lfx();
+ double lfy = this->cc().lfy();
+ double lrx = this->cc().lrx();
+ double lry = this->cc().lry();
+ double rrx = this->cc().rrx();
+ double rry = this->cc().rry();
+ double rfx = this->cc().rfx();
+ double rfy = this->cc().rfy();
+ double lfs = sgn(
+ (lfx - this->ps().x1()) * (this->ps().y4() - this->ps().y1())
+ - (lfy - this->ps().y1()) * (this->ps().x4() - this->ps().x1())
+ );
+ double lrs = sgn(
+ (lrx - this->ps().x1()) * (this->ps().y4() - this->ps().y1())
+ - (lry - this->ps().y1()) * (this->ps().x4() - this->ps().x1())
+ );
+ double rrs = sgn(
+ (rrx - this->ps().x1()) * (this->ps().y4() - this->ps().y1())
+ - (rry - this->ps().y1()) * (this->ps().x4() - this->ps().x1())
+ );
+ double rfs = sgn(
+ (rfx - this->ps().x1()) * (this->ps().y4() - this->ps().y1())
+ - (rfy - this->ps().y1()) * (this->ps().x4() - this->ps().x1())
+ );
+ if (this->ps().parallel())
+ return lfs == rfs && (lfs != lrs || lfs != rrs);
+ else if (!this->forward())
+ return lfs == rfs && (lfs != lrs || lfs != rrs);
+ else
+ return lrs == rrs && (lrs != lfs || lrs != rfs);
+}
+
+bool PSPlanner::parked()
+{
+ std::vector<std::tuple<double, double>> slot;
+ slot.push_back(std::make_tuple(this->ps().x1(), this->ps().y1()));
+ slot.push_back(std::make_tuple(this->ps().x2(), this->ps().y2()));
+ slot.push_back(std::make_tuple(this->ps().x3(), this->ps().y3()));
+ slot.push_back(std::make_tuple(this->ps().x4(), this->ps().y4()));
+ return inside(this->gc().lfx(), this->gc().lfy(), slot)
+ && inside(this->gc().lrx(), this->gc().lry(), slot)
+ && inside(this->gc().rrx(), this->gc().rry(), slot)
+ && inside(this->gc().rfx(), this->gc().rfy(), slot);
}
// find entry
void PSPlanner::fe()
{
+ if (this->ps().parallel())
+ return this->fe_parallel();
+ else
+ return this->fe_perpendicular();
+}
+
+void PSPlanner::fe_parallel()
+{
+ // angle for distance from "entry" corner
+ double dist_angl = this->ps().heading() + M_PI;
+ dist_angl += (this->ps().right()) ? - M_PI / 4 : + M_PI / 4;
+ // set bicycle car `bci` basic dimensions and heading
+ BicycleCar bci = BicycleCar(this->gc());
+ BicycleCar bco = BicycleCar(this->gc());
+ bci.h(this->ps().heading());
+ // move 0.01 from the "entry" corner
+ bci.x(this->ps().x4() + 0.01 * cos(dist_angl));
+ bci.y(this->ps().y4() + 0.01 * sin(dist_angl));
+ // align with parking "top" of slot (move backward)
+ dist_angl = bci.h() + M_PI;
+ bci.x(bci.x() + bci.df() * cos(dist_angl));
+ bci.y(bci.y() + bci.df() * sin(dist_angl));
+ // align with "entry" to pakring slot (move outside)
+ dist_angl = this->ps().heading();
+ dist_angl += (this->ps().right()) ? + M_PI / 2 : - M_PI / 2;
+ bci.x(bci.x() + bci.w() / 2 * cos(dist_angl));
+ bci.y(bci.y() + bci.w() / 2 * sin(dist_angl));
+ // BFS - init all starts
+ // see https://courses.cs.washington.edu/courses/cse326/03su/homework/hw3/bfs.html
+ double dist_diag = sqrt(pow(bci.w() / 2, 2) + pow(bci.df(), 2));
+ if (this->ps().right())
+ dist_angl = atan2(bci.y() - bci.rfy(), bci.x() - bci.rfx());
+ else
+ dist_angl = atan2(bci.y() - bci.lfy(), bci.x() - bci.lfx());
+ double DIST_ANGL = dist_angl;
+ std::queue<BicycleCar, std::list<BicycleCar>> q;
+ while (
+ (
+ this->ps().right()
+ && dist_angl < DIST_ANGL + 3 * M_PI / 4
+ )
+ || (
+ !this->ps().right()
+ && dist_angl > DIST_ANGL - 3 * M_PI / 4
+ )
+ ) {
+ this->cc() = BicycleCar(bci);
+ if (this->ps().right()) {
+ this->cc().x(bci.rfx() + dist_diag * cos(dist_angl));
+ this->cc().y(bci.rfy() + dist_diag * sin(dist_angl));
+ } else {
+ this->cc().x(bci.lfx() + dist_diag * cos(dist_angl));
+ this->cc().y(bci.lfy() + dist_diag * sin(dist_angl));
+ }
+ this->cc().h(this->ps().heading() + dist_angl - DIST_ANGL);
+ if (!this->collide()) {
+ this->cc().st(this->cc().wb() / this->cc().mtr());
+ if (!this->ps().right())
+ this->cc().st(this->cc().st() * -1);
+ this->cc().sp(-0.01);
+ q.push(BicycleCar(this->cc()));
+ }
+ dist_angl += (this->ps().right()) ? + 0.01 : - 0.01;
+ }
+ // BFS - find entry current car `cc` and corresponding goal car `gc`
+ unsigned int iter_cntr;
+ while (!q.empty() && iter_cntr < 9) {
+ this->cc() = BicycleCar(q.front());
+ q.pop();
+ while (
+ !this->collide()
+ && (std::abs(
+ this->cc().h() - this->ps().heading()
+ ) < M_PI / 2)
+ )
+ this->cc().next();
+ this->cc().sp(this->cc().sp() * -1);
+ this->cc().next();
+ this->gc() = BicycleCar(this->cc());
+ if (this->parked())
+ goto successfinish;
+ this->cc().st(this->cc().st() * -1);
+ q.push(BicycleCar(this->cc()));
+ if (sgn(this->cc().st()) == sgn(q.front().st()))
+ iter_cntr++;
+ }
+ // fallback to fer
+ this->gc() = BicycleCar(bco);
+successfinish:
+ return this->fer_parallel();
+}
+
+void PSPlanner::fe_perpendicular()
+{
+ // TODO Try multiple angles when going from parking slot.
+ //
+ // Do not use just the maximum steer angle. Test angles
+ // until the whole current car `cc` is out of the parking
+ // slot `ps`.
+ //
+ // Another approach could be testing angles from the
+ // beginning of the escape parkig slot maneuver.
+ return fer_perpendicular();
}
void PSPlanner::fer()
{
+ if (this->ps().parallel())
+ return this->fer_parallel();
+ else
+ return this->fer_perpendicular();
+}
+
+void PSPlanner::fer_parallel()
+{
+ this->cc().st(this->cc().wb() / this->cc().mtr());
+ if (!this->ps().right())
+ this->cc().st(this->cc().st() * -1);
+ this->cc().sp(0.01);
+ while (!this->left()) {
+ while (!this->collide() && !this->left())
+ this->cc().next();
+ if (this->left() && !this->collide()) {
+ break;
+ } else {
+ this->cc().sp(this->cc().sp() * -1);
+ this->cc().next();
+ this->cc().st(this->cc().st() * -1);
+ }
+ }
+}
+
+void PSPlanner::fer_perpendicular()
+{
+ double cc_h = this->cc().h();
+ double x;
+ double y;
+ // check inner radius
+ if (this->forward()) {
+ x = this->ps().x1();
+ y = this->ps().y1();
+ } else {
+ x = this->ps().x4();
+ y = this->ps().y4();
+ }
+ double x1;
+ double y1;
+ if (this->ps().right()) {
+ x1 = this->cc().ccr().x();
+ y1 = this->cc().ccr().y();
+ } else {
+ x1 = this->cc().ccl().x();
+ y1 = this->cc().ccl().y();
+ }
+ double IR = this->cc().iradi();
+ double a = 1;
+ double b;
+ if (this->forward())
+ b = (x - x1) * 2 * cos(cc_h) + (y - y1) * 2 * sin(cc_h);
+ else
+ b = (x1 - x) * 2 * cos(cc_h) + (y1 - y) * 2 * sin(cc_h);
+ double c = pow(x - x1, 2) + pow(y - y1, 2) - pow(IR, 2);
+ double D = D = pow(b, 2) - 4 * a * c;
+ double delta;
+ delta = -b - sqrt(D);
+ delta /= 2 * a;
+ double delta_1 = delta;
+ // check outer radius
+ if (this->forward()) {
+ x = this->ps().x4();
+ y = this->ps().y4();
+ } else {
+ x = this->ps().x1();
+ y = this->ps().y1();
+ }
+ IR = this->cc().ofradi();
+ a = 1;
+ if (this->forward())
+ b = (x - x1) * 2 * cos(cc_h) + (y - y1) * 2 * sin(cc_h);
+ else
+ b = (x1 - x) * 2 * cos(cc_h) + (y1 - y) * 2 * sin(cc_h);
+ c = pow(x - x1, 2) + pow(y - y1, 2) - pow(IR, 2);
+ D = pow(b, 2) - 4 * a * c;
+ if (this->forward()) {
+ delta = -b + sqrt(D);
+ delta /= 2 * a;
+ }
+ double delta_2 = delta;
+ delta = -b - sqrt(D);
+ delta /= 2 * a;
+ double delta_3 = delta;
+ delta = std::max(delta_1, std::max(delta_2, delta_3));
+ // current car `cc` can get out of slot with max steer
+ this->cc().x(this->cc().x() + delta * cos(cc_h));
+ this->cc().y(this->cc().y() + delta * sin(cc_h));
+ this->cc().h(cc_h);
+ // get current car `cc` out of slot
+ if (this->forward())
+ this->cc().sp(-0.1);
+ else
+ this->cc().sp(0.1);
+ this->cc().st(this->cc().wb() / this->cc().mtr());
+ if (this->ps().right())
+ this->cc().st(this->cc().st() * -1);
+ while (!this->left()) {
+ while (!this->collide() && !this->left())
+ this->cc().next();
+ if (this->left() && !this->collide()) {
+ break;
+ } else {
+ this->cc().sp(this->cc().sp() * -1);
+ this->cc().next();
+ this->cc().st(this->cc().st() * -1);
+ }
+ }
}
PSPlanner::PSPlanner()
projects / hubacji1 / psp.git / blobdiff