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#include "connection.h"
#include <cmath>
using namespace coreview;
Connector::Connector(qreal angle) {
ang = angle;
}
void Connector::setPos(qreal x, qreal y) {
qx = x;
qy = y;
emit updated(QPointF(qx, qy));
}
qreal Connector::x() const {
return qx;
}
qreal Connector::y() const {
return qy;
}
QLineF Connector::vector() const {
return QLineF(point(), QPointF(x() + cos(ang), y() + sin(ang)));
}
QPointF Connector::point() const {
return QPointF(qx, qy);
}
qreal Connector::angle() const {
return ang;
}
Connection::Connection(const Connector *a, const Connector *b) : QGraphicsObject(nullptr) {
pen_width = 1;
ang_start = a->angle();
ang_end = b->angle();
connect(a, SIGNAL(updated(QPointF)), this, SLOT(moved_start(QPointF)));
connect(b, SIGNAL(updated(QPointF)), this, SLOT(moved_end(QPointF)));
moved_start(a->point());
moved_end(b->point());
}
void Connection::setHasText(bool has) {
if (has && value == nullptr) {
value = new QGraphicsSimpleTextItem(this);
value->setText(text);
} else if (!has && value != nullptr) {
delete value;
}
}
void Connection::setText(QString val) {
text = val;
if (value != nullptr)
value->setText(val);
}
void Connection::setAxes(QVector<QLineF> axes) {
break_axes = axes;
}
void Connection::moved_start(QPointF p) {
p_start = p;
recalc_line();
}
void Connection::moved_end(QPointF p) {
p_end = p;
recalc_line();
}
QRectF Connection::boundingRect() const {
QRectF rect;
for (int i = 0; i < (points.size() - 1); i++) {
qreal x = points[i].x() > points[i+1].x() ? points[i].x() : points[i+1].x();
qreal y = points[i].y() > points[i+1].y() ? points[i].y() : points[i+1].y();
rect |= QRectF(x - pen_width/2.0, y - pen_width/2.0, fabs(points[i].x() - points[i+1].x()) + pen_width, fabs(points[i].y() - points[i+1].y()) + pen_width);
}
return rect;
}
void Connection::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
QPen pen;
pen.setWidth(pen_width);
// TODO color?
painter->setPen(pen);
painter->drawPolyline(QPolygonF(points));
}
void Connection::recalc_line() {
points.clear();
points.append(p_start);
QLineF cur_l(p_start, QPointF(p_start.x() + cos(ang_start), p_start.y() + sin(ang_start)));
for (int i = 0; i < break_axes.size(); i++) {
recalc_line_add_point(cur_l, break_axes[i]);
cur_l = break_axes[i];
}
recalc_line_add_point(cur_l, QLineF(QPoint(p_end.x() + cos(ang_end), p_end.y() + sin(ang_end)), p_end));
points.append(p_end);
}
void Connection::recalc_line_add_point(const QLineF &l1, const QLineF &l2) {
QPointF intersec;
if (l1.intersect(l2, &intersec) != QLineF::NoIntersection)
points.append(intersec);
}
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