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#include "polygon.h"
Polygon::Polygon()
: Line()
{
m_polygon.append(QPoint(10, 50));
m_polygon.append(QPoint(30, 70));
m_polygon.append(QPoint(50, 50));
}
bool Polygon::isHit(const QPoint &clickPoint)
{
return m_polygon.containsPoint(clickPoint, Qt::OddEvenFill);
}
void Polygon::draw(QPainter *painter)
{
if (m_selected)
{
QPen penTemp(Qt::DotLine);
penTemp.setColor(Qt::red);
painter->setPen(penTemp);
painter->drawEllipse(m_polygon.point(0), 5, 5);
painter->drawEllipse(m_polygon.point(1), 5, 5);
painter->drawEllipse(m_polygon.point(2), 5, 5);
}
else
{
QPen penNormal(Qt::SolidLine);
penNormal.setColor(Qt::black);
painter->setPen(penNormal);
}
painter->drawPolygon(m_polygon);
}
void Polygon::move(const QPoint &oldPoint, const QPoint &newPoint)
{
if (m_selected)
{
QPoint offset = newPoint - oldPoint;
QVector3D vecOld(oldPoint);
if (vecOld.distanceToPoint(QVector3D(m_polygon.point(0))) < 5)
{
m_polygon.replace(0, m_polygon.point(0) + offset);
}
else if (vecOld.distanceToPoint(QVector3D(m_polygon.point(1))) < 5)
{
m_polygon.replace(1, m_polygon.point(1) + offset);
}
else if (vecOld.distanceToPoint(QVector3D(m_polygon.point(2))) < 5)
{
m_polygon.replace(2, m_polygon.point(2) + offset);
}
else
{
m_polygon.replace(0, m_polygon.point(0) + offset);
m_polygon.replace(1, m_polygon.point(1) + offset);
m_polygon.replace(2, m_polygon.point(2) + offset);
}
}
}
bool Polygon::attributesToDom(QDomDocument *doc, QDomElement &e)
{
if (e.isNull())
{
qDebug() << className() << "::attributesToDom Error: NULL element passed.";
return false;
}
else
{
QDomElement tmp;
foreach(QPoint point, m_polygon.toList())
{
tmp = doc->createElement("Point");
tmp.setAttribute("x", point.rx());
tmp.setAttribute("y", point.ry());
e.appendChild(tmp);
}
return true;
}
}
bool Polygon::attributesFromDom(const QDomElement &e)
{
if (e.isNull())
{
qDebug() << className() << "::attributesFromDom Error: NULL element passed.";
return false;
}
else
{
QDomElement child = e.firstChildElement("Point");
m_polygon.clear();
while(!child.isNull())
{
QPoint tmp(child.attribute("x", "0").toInt(), child.attribute("y", "0").toInt());
m_polygon.append(tmp);
child = child.nextSiblingElement("Point");
}
return true;
}
}
QString Polygon::className()
{
return "Polygon";
}
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