void Main::addLine()
{
QGraphicsLineItem* i = canvas.addLine(QLineF( qrand()%int(canvas.width()), qrand()%int(canvas.height()),
qrand()%int(canvas.width()), qrand()%int(canvas.height()) ));
i->setFlag(QGraphicsItem::ItemIsMovable);
i->setPen( QPen(QColor(qrand()%32*8,qrand()%32*8,qrand()%32*8), 6) );
i->setZValue(qrand()%256);
}
void NavigationView::plotLineForSelected() {
if (scene()->selectedItems().count()<2)
return;
QLineF vectorLine(scene()->selectedItems().at(0)->pos(), scene()->selectedItems().at(1)->pos());
QLineF sides[4] = {
QLineF(0, 0, 0, scene()->height()),
QLineF(scene()->width(), 0, scene()->width(), scene()->height()),
QLineF(0, 0, scene()->width(), 0),
QLineF(0, scene()->height(), scene()->width(), scene()->height())
};
QPointF yStart;
QPointF xStart;
int i=0;
while(yStart.isNull()) {
if (vectorLine.intersect(sides[i++], &yStart)!=QLineF::BoundedIntersection) {
qDebug("could not intersect y");
}
i++;
}
i=1;
while(xStart.isNull()) {
if (vectorLine.intersect(sides[i++], &xStart)!=QLineF::BoundedIntersection) {
qDebug("could not intersect x");
}
}
//IntersectionLineItem lineItem(QLineF(yStart, xStart);
QPen linePen(Qt::black);
linePen.setWidth(3);
QGraphicsLineItem * line = scene()->addLine(QLineF(yStart, xStart));
line->setPen(linePen);
line->setFlag(QGraphicsItem::ItemIsSelectable, true);
emit newLineAdded(mapSceneToGeo(scene()->selectedItems().at(0)->pos()), mapSceneToGeo(scene()->selectedItems().at(1)->pos()));
}
treeVisualiserFrame::treeVisualiserFrame(const observationTree& tree, float pointSize)
:pointSize(pointSize), highlightItem(NULL)
{
graphicsScene = new QGraphicsScene();
graphicsScene->installEventFilter(this);
graphicsScene->setItemIndexMethod(QGraphicsScene::NoIndex);
graphicsView = new ZoomGraphicsView(graphicsScene);
graphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
graphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
graphicsView->installEventFilter(this);
const observationTree::treeGraphType treeGraph = tree.getTreeGraph();
observationTree::treeGraphType::vertex_iterator currentVertex, endVertex;
boost::tie(currentVertex, endVertex) = boost::vertices(treeGraph);
QPen blackPen(QColor("black"));
blackPen.setStyle(Qt::NoPen);
QBrush blueBrush(QColor("blue"));
QBrush redBrush(QColor("red"));
for(; currentVertex != endVertex; currentVertex++)
{
float x = treeGraph[*currentVertex].x;
float y = treeGraph[*currentVertex].y;
treeVisualiserVertex* vertexItem = new treeVisualiserVertex(x - pointSize/2, y - pointSize/2, pointSize, pointSize);
vertexItem->setVertexID((int)*currentVertex);
if(treeGraph[*currentVertex].potentiallyDisconnected)
{
vertexItem->setPen(blackPen);
vertexItem->setBrush(blueBrush);
}
else
{
vertexItem->setPen(blackPen);
vertexItem->setBrush(redBrush);
}
vertexItem->setFlag(QGraphicsItem::ItemIsSelectable, true);
graphicsScene->addItem(vertexItem);
}
blackPen.setStyle(Qt::SolidLine);
blackPen.setWidthF(pointSize/8);
observationTree::treeGraphType::edge_iterator currentEdge, endEdge;
boost::tie(currentEdge, endEdge) = boost::edges(treeGraph);
for(; currentEdge != endEdge; currentEdge++)
{
int sourceVertex = (int)boost::source(*currentEdge, treeGraph);
int targetVertex = (int)boost::target(*currentEdge, treeGraph);
float sourceX = treeGraph[sourceVertex].x;
float sourceY = treeGraph[sourceVertex].y;
float targetX = treeGraph[targetVertex].x;
float targetY = treeGraph[targetVertex].y;
QGraphicsLineItem* lineItem = graphicsScene->addLine(sourceX, sourceY, targetX, targetY, blackPen);
lineItem->setFlag(QGraphicsItem::ItemIsSelectable, false);
}
layout = new QHBoxLayout;
layout->addWidget(graphicsView, 1);
layout->setContentsMargins(0,0,0,0);
setLayout(layout);
graphicsView->fitInView(graphicsView->sceneRect(), Qt::KeepAspectRatioByExpanding);
}