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Diffstat (limited to 'src/location/quickmapitems/qgeomapitemgeometry.cpp')
| -rw-r--r-- | src/location/quickmapitems/qgeomapitemgeometry.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/location/quickmapitems/qgeomapitemgeometry.cpp b/src/location/quickmapitems/qgeomapitemgeometry.cpp new file mode 100644 index 00000000..60ff4eec --- /dev/null +++ b/src/location/quickmapitems/qgeomapitemgeometry.cpp @@ -0,0 +1,149 @@ +/**************************************************************************** +** +** Copyright (C) 2022 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtLocation module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qgeomapitemgeometry_p.h" +#include "qdeclarativegeomap_p.h" +#include <QtQuick/QSGGeometry> + +#include <QtPositioning/private/qlocationutils_p.h> +#include <QtPositioning/private/qdoublevector2d_p.h> +#include <QtLocation/private/qgeomap_p.h> +#include <QtLocation/private/qgeoprojection_p.h> + +QT_BEGIN_NAMESPACE + +QGeoMapItemGeometry::QGeoMapItemGeometry() +{ +} + +QGeoMapItemGeometry::~QGeoMapItemGeometry() +{ + +} + +/*! + \internal +*/ +void QGeoMapItemGeometry::translate(const QPointF &offset) +{ + for (qsizetype i = 0; i < screenVertices_.size(); ++i) + screenVertices_[i] += offset; + + firstPointOffset_ += offset; + screenOutline_.translate(offset); + screenBounds_.translate(offset); +} + +/*! + \internal +*/ +void QGeoMapItemGeometry::allocateAndFill(QSGGeometry *geom) const +{ + const QList<QPointF> &vx = screenVertices_; + const QList<quint32> &ix = screenIndices_; + + if (isIndexed()) { + geom->allocate(vx.size(), ix.size()); + if (geom->indexType() == QSGGeometry::UnsignedShortType) { + quint16 *its = geom->indexDataAsUShort(); + for (qsizetype i = 0; i < ix.size(); ++i) + its[i] = ix[i]; + } else if (geom->indexType() == QSGGeometry::UnsignedIntType) { + quint32 *its = geom->indexDataAsUInt(); + for (qsizetype i = 0; i < ix.size(); ++i) + its[i] = ix[i]; + } + } else { + geom->allocate(vx.size()); + } + + QSGGeometry::Point2D *pts = geom->vertexDataAsPoint2D(); + for (qsizetype i = 0; i < vx.size(); ++i) + pts[i].set(vx[i].x(), vx[i].y()); +} + +/*! + \internal +*/ +QRectF QGeoMapItemGeometry::translateToCommonOrigin(const QList<QGeoMapItemGeometry *> &geoms) +{ + QGeoCoordinate origin = geoms.at(0)->origin(); + + QPainterPath brects; + + // first get max offset + QPointF maxOffset = geoms.at(0)->firstPointOffset(); + for (const QGeoMapItemGeometry *g : geoms) { + QPointF o = g->firstPointOffset(); + maxOffset.setX(qMax(o.x(), maxOffset.x())); + maxOffset.setY(qMax(o.y(), maxOffset.y())); + } + + // then translate everything + for (QGeoMapItemGeometry *g : geoms) { + g->translate(maxOffset - g->firstPointOffset()); + brects.addRect(g->sourceBoundingBox()); + } + + return brects.boundingRect(); +} + +/*! + \internal +*/ +double QGeoMapItemGeometry::geoDistanceToScreenWidth(const QGeoMap &map, + const QGeoCoordinate &fromCoord, + const QGeoCoordinate &toCoord) +{ + // Do not wrap around half the globe + Q_ASSERT(!qFuzzyCompare(fromCoord.longitude(), toCoord.longitude())); + + QGeoCoordinate mapMid = map.geoProjection().itemPositionToCoordinate(QDoubleVector2D(map.viewportWidth()/2.0, 0)); + double halfGeoDist = toCoord.longitude() - fromCoord.longitude(); + if (toCoord.longitude() < fromCoord.longitude()) + halfGeoDist += 360; + halfGeoDist /= 2.0; + QGeoCoordinate geoDelta = QGeoCoordinate(0, + QLocationUtils::wrapLong(mapMid.longitude() + halfGeoDist)); + QDoubleVector2D halfScreenDist = map.geoProjection().coordinateToItemPosition(geoDelta, false) + - QDoubleVector2D(map.viewportWidth()/2.0, 0); + return halfScreenDist.x() * 2.0; +} + +QT_END_NAMESPACE |