/*! \internal */ void QGeoMapRectangleGeometry::updatePoints(const QGeoMap &map, const QGeoCoordinate &topLeft, const QGeoCoordinate &bottomRight) { if (!screenDirty_ && !sourceDirty_) return; QDoubleVector2D tl = map.coordinateToItemPosition(topLeft, false); QDoubleVector2D br = map.coordinateToItemPosition(bottomRight, false); // We can get NaN if the map isn't set up correctly, or the projection // is faulty -- probably best thing to do is abort if (!qIsFinite(tl.x()) || !qIsFinite(tl.y())) return; if (!qIsFinite(br.x()) || !qIsFinite(br.y())) return; if ( preserveGeometry_ ) { double unwrapBelowX = map.coordinateToItemPosition(geoLeftBound_, false).x(); if (br.x() < unwrapBelowX) br.setX(tl.x() + screenBounds_.width()); } QRectF re(tl.toPointF(), br.toPointF()); re.translate(-1 * tl.toPointF()); clear(); screenVertices_.reserve(6); screenVertices_ << re.topLeft(); screenVertices_ << re.topRight(); screenVertices_ << re.bottomLeft(); screenVertices_ << re.topRight(); screenVertices_ << re.bottomLeft(); screenVertices_ << re.bottomRight(); firstPointOffset_ = QPointF(0,0); srcOrigin_ = topLeft; screenBounds_ = re; screenOutline_ = QPainterPath(); screenOutline_.addRect(re); geoLeftBound_ = topLeft; }
/*! \internal */ void QGeoMapCircleGeometry::updateScreenPointsInvert(const QGeoMap &map) { if (!screenDirty_) return; if (map.width() == 0 || map.height() == 0) { clear(); return; } QPointF origin = map.coordinateToItemPosition(srcOrigin_, false).toPointF(); QPainterPath ppi = srcPath_; clear(); // a circle requires at least 3 points; if (ppi.elementCount() < 3) return; // translate the path into top-left-centric coordinates QRectF bb = ppi.boundingRect(); ppi.translate(-bb.left(), -bb.top()); firstPointOffset_ = -1 * bb.topLeft(); ppi.closeSubpath(); // calculate actual width of map on screen in pixels QGeoCoordinate mapCenter(0, map.cameraData().center().longitude()); QDoubleVector2D midPoint = map.coordinateToItemPosition(mapCenter, false); QDoubleVector2D midPointPlusOne = QDoubleVector2D(midPoint.x() + 1.0, midPoint.y()); QGeoCoordinate coord1 = map.itemPositionToCoordinate(midPointPlusOne, false); double geoDistance = coord1.longitude() - map.cameraData().center().longitude(); if ( geoDistance < 0 ) geoDistance += 360.0; double mapWidth = 360.0 / geoDistance; qreal leftOffset = origin.x() - (map.width()/2.0 - mapWidth/2.0) - firstPointOffset_.x(); qreal topOffset = origin.y() - (midPoint.y() - mapWidth/2.0) - firstPointOffset_.y(); QPainterPath ppiBorder; ppiBorder.moveTo(QPointF(-leftOffset, -topOffset)); ppiBorder.lineTo(QPointF(mapWidth - leftOffset, -topOffset)); ppiBorder.lineTo(QPointF(mapWidth - leftOffset, mapWidth - topOffset)); ppiBorder.lineTo(QPointF(-leftOffset, mapWidth - topOffset)); screenOutline_ = ppiBorder; std::vector<p2t::Point*> borderPts; borderPts.reserve(4); std::vector<p2t::Point*> curPts; curPts.reserve(ppi.elementCount()); for (int i = 0; i < ppi.elementCount(); ++i) { const QPainterPath::Element e = ppi.elementAt(i); if (e.isMoveTo() || i == ppi.elementCount() - 1 || (qAbs(e.x - curPts.front()->x) < 0.1 && qAbs(e.y - curPts.front()->y) < 0.1)) { if (curPts.size() > 2) { for (int j = 0; j < 4; ++j) { const QPainterPath::Element e2 = ppiBorder.elementAt(j); borderPts.push_back(new p2t::Point(e2.x, e2.y)); } p2t::CDT *cdt = new p2t::CDT(borderPts); cdt->AddHole(curPts); cdt->Triangulate(); std::vector<p2t::Triangle*> tris = cdt->GetTriangles(); screenVertices_.reserve(screenVertices_.size() + int(tris.size())); for (size_t i = 0; i < tris.size(); ++i) { p2t::Triangle *t = tris.at(i); for (int j = 0; j < 3; ++j) { p2t::Point *p = t->GetPoint(j); screenVertices_ << QPointF(p->x, p->y); } } delete cdt; } curPts.clear(); curPts.reserve(ppi.elementCount() - i); curPts.push_back(new p2t::Point(e.x, e.y)); } else if (e.isLineTo()) { curPts.push_back(new p2t::Point(e.x, e.y)); } else { qWarning("Unhandled element type in circle painterpath"); } } if (curPts.size() > 0) { qDeleteAll(curPts.begin(), curPts.end()); curPts.clear(); } if (borderPts.size() > 0) { qDeleteAll(borderPts.begin(), borderPts.end()); borderPts.clear(); } screenBounds_ = ppiBorder.boundingRect(); }