/*!
\internal
*/
void QGeoMapPolygonGeometry::updateSourcePoints(const QGeoMap &map,
const QList<QGeoCoordinate> &path)
{
if (!sourceDirty_)
return;
qreal minX = -1.0;
// build the actual path
QPointF origin;
QPointF lastPoint;
srcPath_ = QPainterPath();
double unwrapBelowX = 0;
if (preserveGeometry_ )
unwrapBelowX = map.coordinateToScreenPosition(geoLeftBound_, false).x();
for (int i = 0; i < path.size(); ++i) {
const QGeoCoordinate &coord = path.at(i);
if (!coord.isValid())
continue;
QPointF point = map.coordinateToScreenPosition(coord, 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(point.x()) || !qIsFinite(point.y()))
return;
// unwrap x to preserve geometry if moved to border of map
if (preserveGeometry_ && point.x() < unwrapBelowX && !qFuzzyCompare(point.x(), unwrapBelowX))
point.setX(unwrapBelowX + geoDistanceToScreenWidth(map, geoLeftBound_, coord));
if (i == 0) {
origin = point;
minX = point.x();
srcOrigin_ = coord;
srcPath_.moveTo(point - origin);
lastPoint = point;
} else {
if (point.x() <= minX)
minX = point.x();
const QPointF diff = (point - lastPoint);
if (diff.x() * diff.x() + diff.y() * diff.y() >= 3.0) {
srcPath_.lineTo(point - origin);
lastPoint = point;
}
}
}
srcPath_.closeSubpath();
if (!assumeSimple_)
srcPath_ = srcPath_.simplified();
sourceBounds_ = srcPath_.boundingRect();
geoLeftBound_ = map.screenPositionToCoordinate(QPointF(minX, 0), false);
}
/*!
\internal
*/
void QGeoMapPolylineGeometry::updateSourcePoints(const QGeoMap &map,
const QList<QGeoCoordinate> &path)
{
bool foundValid = false;
double minX = -1.0;
double minY = -1.0;
double maxX = -1.0;
double maxY = -1.0;
if (!sourceDirty_)
return;
// clear the old data and reserve enough memory
srcPoints_.clear();
srcPoints_.reserve(path.size() * 2);
srcPointTypes_.clear();
srcPointTypes_.reserve(path.size());
QDoubleVector2D origin, lastPoint, lastAddedPoint;
double unwrapBelowX = 0;
if (preserveGeometry_)
unwrapBelowX = map.coordinateToScreenPosition(geoLeftBound_, false).x();
for (int i = 0; i < path.size(); ++i) {
const QGeoCoordinate &coord = path.at(i);
if (!coord.isValid())
continue;
QDoubleVector2D point = map.coordinateToScreenPosition(coord, 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(point.x()) || !qIsFinite(point.y()))
return;
// unwrap x to preserve geometry if moved to border of map
if (preserveGeometry_ && point.x() < unwrapBelowX && !qFuzzyCompare(point.x(), unwrapBelowX))
point.setX(unwrapBelowX + geoDistanceToScreenWidth(map, geoLeftBound_, coord));
if (!foundValid) {
foundValid = true;
srcOrigin_ = coord;
origin = point;
point = QDoubleVector2D(0,0);
minX = point.x();
maxX = minX;
minY = point.y();
maxY = minY;
srcPoints_ << point.x() << point.y();
srcPointTypes_ << QPainterPath::MoveToElement;
lastAddedPoint = point;
} else {
point -= origin;
minX = qMin(point.x(), minX);
minY = qMin(point.y(), minY);
maxX = qMax(point.x(), maxX);
maxY = qMax(point.y(), maxY);
if ((point - lastAddedPoint).manhattanLength() > 3 ||
i == path.size() - 1) {
srcPoints_ << point.x() << point.y();
srcPointTypes_ << QPainterPath::LineToElement;
lastAddedPoint = point;
}
}
lastPoint = point;
}
sourceBounds_ = QRectF(QPointF(minX, minY), QPointF(maxX, maxY));
geoLeftBound_ = map.screenPositionToCoordinate(
QDoubleVector2D(minX + origin.x(), minY + origin.y()), false);
}
