void Editor::onMapReady()
{
myUi->graphicsView->scene()->setSceneRect(0, 0, myGame->generator()->width(), myGame->generator()->height());
for (unsigned int i = 0; i < myGame->generator()->regions().size(); i++)
{
QPolygonF qring, sqring;
auto ring = boost::geometry::exterior_ring(myGame->generator()->regions()[i].poly);
boost::geometry::convert(ring, qring);
boost::geometry::simplify(qring, sqring, 1);
QPen pen;
pen.setColor(QColor(0,0,0));
pen.setStyle(Qt::PenStyle::DashLine);
QBrush brush;
brush.setStyle(Qt::BrushStyle::SolidPattern);
std::string colour = myGame->biomes()[myGame->generator()->regions()[i].biome]->jsonValue["mapColour"].asString();
pen.setColor(QColor(colour.c_str()));
brush.setColor(QColor(colour.c_str()));
QGraphicsPolygonItem * pi = new RegionPolygonItem(this);
pi->setPen(pen);
pi->setBrush(brush);
pi->setPolygon(sqring);
QPolygonF convex;
boost::geometry::convex_hull(sqring, convex);
double area = boost::geometry::area(convex);
pi->setZValue(-area);
pi->setData(0, i);
pi->setFlag(QGraphicsItem::GraphicsItemFlag::ItemIsFocusable, true);
pi->setFlag(QGraphicsItem::GraphicsItemFlag::ItemIsSelectable, true);
myUi->graphicsView->scene()->addItem(pi);
}
}
void MainWindow::slotAddPolygonItem() //在场景中加入一个多边形图元
{
QVector<QPoint> v;
v<<QPoint(30,-15)<<QPoint(0,-30)<<QPoint(-30,-15)<<QPoint(-30,15)<<QPoint(0,30)<<QPoint(30,15);
QGraphicsPolygonItem *item = new QGraphicsPolygonItem(QPolygonF(v));
item->setBrush(QColor(qrand()%256,qrand()%256,qrand()%256));
item->setFlag(QGraphicsItem::ItemIsMovable);
scene->addItem(item);
item->setPos((qrand()%int(scene->sceneRect().width()))-200,(qrand()%int(scene->sceneRect().height()))-200);
}
void Main::addPolygon()
{
const int size = int(canvas.width()/2);
Q3PointArray pa(6);
pa[0] = QPoint(0,0);
pa[1] = QPoint(size,size/5);
pa[2] = QPoint(size*4/5,size);
pa[3] = QPoint(size/6,size*5/4);
pa[4] = QPoint(size*3/4,size*3/4);
pa[5] = QPoint(size*3/4,size/4);
QGraphicsPolygonItem* i = canvas.addPolygon(pa);
i->setFlag(QGraphicsItem::ItemIsMovable);
i->setPen(Qt::NoPen);
i->setBrush( QColor(qrand()%32*8,qrand()%32*8,qrand()%32*8) );
i->setPos(qrand()%int(canvas.width()),qrand()%int(canvas.height()));
i->setZValue(qrand()%256);
}