1 files changed, 402 insertions, 0 deletions
diff --git a/src/location/mapsgl/map.cpp b/src/location/mapsgl/map.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "map.h"
+#include "map_p.h"
+#include "map2d_p.h"
+#include "map3d_p.h"
+
+#include "tilecache.h"
+#include "mapsphere_p.h"
+#include "projection_p.h"
+#include "tile.h"
+#include "mapitem.h"
+
+#include <QMutex>
+#include <QMap>
+
+#include <qglscenenode.h>
+#include <qgeometrydata.h>
+#include <qglbuilder.h>
+#include <Qt3D/qglpainter.h>
+#include <Qt3D/qglcamera.h>
+
+#include <cmath>
+
+Map::Map(TileCache *cache, QObject *parent)
+    : QObject(parent),
+      autoUpdate_(true)
+{
+//    d_ptr = new Map3DPrivate(this, cache, 20000.0);
+
+    // edge is 2^max zoom * 4
+    d_ptr = new Map2DPrivate(this, cache, 20, 256);
+}
+
+Map::~Map()
+{
+    delete d_ptr;
+}
+
+void Map::setMappingManager(QGeoMappingManager *manager)
+{
+    d_ptr->setMappingManager(manager);
+}
+
+void Map::paintGL(QGLPainter *painter)
+{
+    d_ptr->paintGL(painter);
+}
+
+QGLCamera* Map::glCamera() const
+{
+    return d_ptr->glCamera();
+}
+
+void Map::resize(int width, int height)
+{
+    d_ptr->resize(width, height);
+}
+
+void Map::setAutoUpdate(bool autoUpdate)
+{
+    autoUpdate_ = autoUpdate;
+}
+
+bool Map::autoUpdate() const
+{
+    return autoUpdate_;
+}
+
+void Map::clearCache()
+{
+//    sphere_->clearCache();
+}
+
+void Map::setCameraData(const CameraData &cameraData)
+{
+    if (cameraData == d_ptr->cameraData())
+        return;
+
+    d_ptr->setCameraData(cameraData);
+
+        if (autoUpdate_)
+            update();
+
+    emit cameraDataChanged(d_ptr->cameraData());
+}
+
+CameraData Map::cameraData() const
+{
+    return d_ptr->cameraData();
+}
+
+void Map::update()
+{
+    d_ptr->update();
+    emit updateRequired();
+}
+
+int Map::numMapItems() const
+{
+    return d_ptr->numMapItems();
+}
+
+MapItem* Map::mapItem(int index) const
+{
+    return d_ptr->mapItem(index);
+}
+
+QList<MapItem*> Map::mapItems() const
+{
+    return d_ptr->mapItems();
+}
+
+void Map::addMapItem(MapItem *item)
+{
+    d_ptr->addMapItem(item);
+}
+
+void Map::removeMapItem(MapItem *item)
+{
+    d_ptr->removeMapItem(item);
+}
+
+void Map::clearMapItems()
+{
+    d_ptr->clearMapItems();
+}
+
+QGeoCoordinate Map::screenPositionToCoordinate(const QPointF &pos) const
+{
+    return d_ptr->screenPositionToCoordinate(pos);
+}
+
+QPointF Map::coordinateToScreenPosition(const QGeoCoordinate &coordinate) const
+{
+    return d_ptr->coordinateToScreenPosition(coordinate);
+}
+
+//------------------------------------------------------------//
+
+MapPrivate::MapPrivate(Map *parent, TileCache *cache)
+    : manager_(0)
+{
+    sphere_ = new MapSphere(parent, this, cache);
+    mapSceneNode_ = new QGLSceneNode();
+    mapSceneNode_->addNode(sphere_->sphereSceneNode());
+    objectSceneNode_ = new QGLSceneNode();
+    glCamera_ = new QGLCamera();
+}
+
+MapPrivate::~MapPrivate()
+{
+    delete sphere_;
+    delete mapSceneNode_;
+    delete objectSceneNode_;
+    delete glCamera_;
+    // TODO map items are not deallocated!
+    // However: how to ensure this is done in rendering thread?
+}
+
+void MapPrivate::setMappingManager(QGeoMappingManager *manager)
+{
+    manager_ = manager;
+    sphere_->setMappingManager(manager_);
+}
+
+QGeoMappingManager* MapPrivate::manager() const
+{
+    return manager_;
+}
+
+QGLCamera* MapPrivate::glCamera() const
+{
+    return glCamera_;
+}
+
+void MapPrivate::setProjection(const QSharedPointer<Projection> &projection)
+{
+    projection_ = projection;
+}
+
+QSharedPointer<Projection> MapPrivate::projection() const
+{
+    return projection_;
+}
+
+void MapPrivate::setCameraData(const CameraData &cameraData)
+{
+    cameraData_ = cameraData;
+    cameraData_.setAspectRatio(aspectRatio_);
+    cameraData_.setProjection(projection_.toWeakRef());
+    updateGlCamera(glCamera_);
+    updateFrustum(frustum_);
+    visibleTiles_ = updateVisibleTiles();
+    sphere_->update(visibleTiles_);
+}
+
+CameraData MapPrivate::cameraData() const
+{
+    return cameraData_;
+}
+
+void MapPrivate::update()
+{
+    sphere_->update(visibleTiles_);
+}
+
+void MapPrivate::resize(int width, int height)
+{
+    width_ = width;
+    height_ = height;
+    aspectRatio_ = 1.0 * width_ / height_;
+    setCameraData(cameraData_);
+}
+
+Frustum MapPrivate::frustum() const
+{
+    return frustum_;
+}
+
+void MapPrivate::paintGL(QGLPainter *painter)
+{
+    if (!sphere_->updateMutex.tryLock()) {
+        qDebug() << "map will miss a frame, no mutex acquired!------";
+        return;
+    }
+
+    sphere_->GLContextAvailable();
+    GLContextAvailable();
+
+    mapSceneNode_->draw(painter);
+
+    glDisable(GL_DEPTH_TEST);
+    objectSceneNode_->draw(painter);
+    glEnable(GL_DEPTH_TEST);
+
+    sphere_->updateMutex.unlock();
+}
+
+int MapPrivate::numMapItems() const
+{
+    return mapItems_.length();
+}
+
+MapItem* MapPrivate::mapItem(int index) const
+{
+    return mapItems_.at(index);
+}
+
+QList<MapItem*> MapPrivate::mapItems() const
+{
+    return mapItems_;
+}
+
+void MapPrivate::addMapItem(MapItem *item)
+{
+    // TODO bit hard block - on declarative side the coordinate may well be invalid time to time
+    if (!item->coordinate().isValid())
+        return;
+    sphere_->updateMutex.lock();
+    updateMapItemSceneNode(item);
+    if (item->sceneNode()) {
+        objectSceneNode_->addNode(item->sceneNode());
+    }
+    mapItems_.append(item);
+    sphere_->updateMutex.unlock();
+}
+
+// Function is guaranteed to be only called when executing in
+// rendering thread with valid GL context. Furthermore it is
+// safe to update any geometry/structures - mutex is locked.
+void MapPrivate::GLContextAvailable()
+{
+    // remove obsolete items
+    QSet<MapItem *>::const_iterator i = obsoleteItems_.constBegin();
+    while (i != obsoleteItems_.constEnd()) {
+        QGLSceneNode *node = (*i)->sceneNode();
+        if (node) {
+            //sceneNode_->removeNode(node); must be removed in GUI thread, not in rendering thread
+            delete node;
+        }
+        mapItems_.removeAll(*i);
+        ++i;
+    }
+    if (!obsoleteItems_.isEmpty())
+        obsoleteItems_.clear();
+}
+
+// Must not be called from rendering thread
+void MapPrivate::removeMapItem(MapItem *item)
+{
+    sphere_->updateMutex.lock();
+    // nodes need to be removed from the scene node tree in GUI thread,
+    // but the deletion needs to occur in rendering thread
+    if (item->sceneNode())
+        objectSceneNode_->removeNode(item->sceneNode());
+    if (!obsoleteItems_.contains(item))
+        obsoleteItems_.insert(item);
+    sphere_->updateMutex.unlock();
+}
+
+void MapPrivate::clearMapItems()
+{
+    sphere_->updateMutex.lock();
+    for (int i = 0; i < mapItems_.size(); ++i) {
+        if (!obsoleteItems_.contains(mapItems_.at(i))) {
+            if (mapItems_.at(i)->sceneNode())
+                objectSceneNode_->removeNode(mapItems_.at(i)->sceneNode());
+            obsoleteItems_.insert(mapItems_.at(i));
+        }
+    }
+    sphere_->updateMutex.unlock();
+}
+
+QVector2D MapPrivate::pointToTile(const QVector3D &point, int zoom, bool roundUp) const
+{
+    QVector2D p = projection_->pointToMercator(point);
+
+    int z = 1 << zoom;
+    int x = 0;
+    int y = 0;
+
+    if (p.y() == 1.0)
+        y = z - 1;
+    else
+        y = static_cast<int>(z * p.y()) % z;
+
+    if ((qAbs(p.x()) < 1e-6) || (qAbs(p.x() - 1) < 1e-6))
+        if (roundUp)
+            x = z - 1;
+        else
+            x = 0;
+    else
+        x = static_cast<int>(z * p.x()) % z;
+
+    return QVector2D(x, y);
+}
+
+QVector3D MapPrivate::tileXIntersectToPoint(int zoomLevel, int x) const
+{
+    int zpow2 = 1 << zoomLevel;
+    return projection_->mercatorToPoint(QVector2D(x * 1.0 / zpow2, zpow2 / 2.0));
+}
+
+QVector3D MapPrivate::tileYIntersectToPoint(int zoomLevel, int y) const
+{
+    int zpow2 = 1 << zoomLevel;
+    return projection_->mercatorToPoint(QVector2D(zpow2 / 2.0, y * 1.0 / zpow2));
+}
+
+int MapPrivate::width() const
+{
+    return width_;
+}
+
+int MapPrivate::height() const
+{
+    return height_;
+}
+
+double MapPrivate::aspectRatio() const
+{
+    return aspectRatio_;
+}