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#include "polygon.h"
Polygon::Polygon()
: Line()
{
m_polygon.append(QPoint(0,0));
m_polygon.append(QPoint(0,0));
m_polygon.append(QPoint(0,0));
}
bool Polygon::isHit(const QPoint &clickPoint)
{
QVector3D a(p2() - p1());
QVector3D r1(p1());
QVector3D rq(clickPoint);
float dist = rq.distanceToLine(r1, a.normalized());
return dist < 5;
}
void Polygon::draw(QPainter *painter)
{
if (m_selected)
{
QPen penTemp(Qt::DotLine);
penTemp.setColor(Qt::red);
painter->setPen(penTemp);
painter->drawEllipse(p1(), 5, 5);
painter->drawEllipse(p2(), 5, 5);
painter->drawEllipse(QPoint(p1().rx() + 20, p1().ry() - 20), 5, 5);
}
else
{
QPen penNormal(Qt::SolidLine);
penNormal.setColor(Qt::black);
painter->setPen(penNormal);
}
m_polygon.replace(0, p1());
m_polygon.replace(1, p2());
m_polygon.replace(2, QPoint(p1().rx() + 20, p1().ry() - 20));
painter->drawPolygon(m_polygon);
}
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