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/****************************************************************************
*
* (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
#include "QGCMapPolygon.h"
#include "QGCGeo.h"
#include "JsonHelper.h"
#include "QGCQGeoCoordinate.h"
#include <QGeoRectangle>
#include <QDebug>
#include <QJsonArray>
const char* QGCMapPolygon::_jsonPolygonKey = "polygon";
QGCMapPolygon::QGCMapPolygon(QObject* newCoordParent, QObject* parent)
: QObject(parent)
, _newCoordParent(newCoordParent)
, _dirty(false)
{
connect(&_polygonModel, &QmlObjectListModel::dirtyChanged, this, &QGCMapPolygon::_polygonModelDirtyChanged);
connect(&_polygonModel, &QmlObjectListModel::countChanged, this, &QGCMapPolygon::_polygonModelCountChanged);
}
void QGCMapPolygon::clear(void)
{
// Bug workaround, see below
while (_polygonPath.count() > 1) {
_polygonPath.takeLast();
}
emit pathChanged();
// Although this code should remove the polygon from the map it doesn't. There appears
// to be a bug in QGCMapPolygon which causes it to not be redrawn if the list is empty. So
// we work around it by using the code above to remove all but the last point which in turn
// will cause the polygon to go away.
_polygonPath.clear();
_polygonModel.clearAndDeleteContents();
setDirty(true);
}
void QGCMapPolygon::adjustVertex(int vertexIndex, const QGeoCoordinate coordinate)
{
_polygonPath[vertexIndex] = QVariant::fromValue(coordinate);
emit pathChanged();
_polygonModel.value<QGCQGeoCoordinate*>(vertexIndex)->setCoordinate(coordinate);
setDirty(true);
}
void QGCMapPolygon::setDirty(bool dirty)
{
if (_dirty != dirty) {
_dirty = dirty;
emit dirtyChanged(dirty);
}
}
QGeoCoordinate QGCMapPolygon::_coordFromPointF(const QPointF& point) const
{
QGeoCoordinate coord;
if (_polygonPath.count() > 0) {
QGeoCoordinate tangentOrigin = _polygonPath[0].value<QGeoCoordinate>();
convertNedToGeo(-point.y(), point.x(), 0, tangentOrigin, &coord);
}
return coord;
}
QPointF QGCMapPolygon::_pointFFromCoord(const QGeoCoordinate& coordinate) const
{
if (_polygonPath.count() > 0) {
double y, x, down;
QGeoCoordinate tangentOrigin = _polygonPath[0].value<QGeoCoordinate>();
convertGeoToNed(coordinate, tangentOrigin, &y, &x, &down);
return QPointF(x, -y);
}
return QPointF();
}
QPolygonF QGCMapPolygon::_toPolygonF(void) const
{
QPolygonF polygon;
if (_polygonPath.count() > 2) {
for (int i=0; i<_polygonPath.count(); i++) {
polygon.append(_pointFFromCoord(_polygonPath[i].value<QGeoCoordinate>()));
}
}
return polygon;
}
bool QGCMapPolygon::containsCoordinate(const QGeoCoordinate& coordinate) const
{
if (_polygonPath.count() > 2) {
return _toPolygonF().containsPoint(_pointFFromCoord(coordinate), Qt::OddEvenFill);
} else {
return false;
}
}
QGeoCoordinate QGCMapPolygon::center(void) const
{
if (_polygonPath.count() > 2) {
QPointF centerPoint = _toPolygonF().boundingRect().center();
return _coordFromPointF(centerPoint);
} else {
return QGeoCoordinate();
}
}
void QGCMapPolygon::setPath(const QList<QGeoCoordinate>& path)
{
_polygonPath.clear();
_polygonModel.clearAndDeleteContents();
foreach(const QGeoCoordinate& coord, path) {
_polygonPath.append(QVariant::fromValue(coord));
_polygonModel.append(new QGCQGeoCoordinate(coord, _newCoordParent));
}
setDirty(true);
emit pathChanged();
}
void QGCMapPolygon::setPath(const QVariantList& path)
{
_polygonPath = path;
_polygonModel.clearAndDeleteContents();
for (int i=0; i<_polygonPath.count(); i++) {
_polygonModel.append(new QGCQGeoCoordinate(_polygonPath[i].value<QGeoCoordinate>(), _newCoordParent));
}
setDirty(true);
emit pathChanged();
}
void QGCMapPolygon::saveToJson(QJsonObject& json)
{
QJsonValue jsonValue;
JsonHelper::saveGeoCoordinateArray(_polygonPath, false /* writeAltitude*/, jsonValue);
json.insert(_jsonPolygonKey, jsonValue);
setDirty(false);
}
bool QGCMapPolygon::loadFromJson(const QJsonObject& json, bool required, QString& errorString)
{
errorString.clear();
clear();
if (required) {
if (!JsonHelper::validateRequiredKeys(json, QStringList(_jsonPolygonKey), errorString)) {
return false;
}
} else if (!json.contains(_jsonPolygonKey)) {
return true;
}
if (!JsonHelper::loadGeoCoordinateArray(json[_jsonPolygonKey], false /* altitudeRequired */, _polygonPath, errorString)) {
return false;
}
setDirty(false);
emit pathChanged();
return true;
}
QList<QGeoCoordinate> QGCMapPolygon::coordinateList(void) const
{
QList<QGeoCoordinate> coords;
for (int i=0; i<_polygonPath.count(); i++) {
coords.append(_polygonPath[i].value<QGeoCoordinate>());
}
return coords;
}
void QGCMapPolygon::splitPolygonSegment(int vertexIndex)
{
int nextIndex = vertexIndex + 1;
if (nextIndex > _polygonPath.length() - 1) {
nextIndex = 0;
}
QGeoCoordinate firstVertex = _polygonPath[vertexIndex].value<QGeoCoordinate>();
QGeoCoordinate nextVertex = _polygonPath[nextIndex].value<QGeoCoordinate>();
double distance = firstVertex.distanceTo(nextVertex);
double azimuth = firstVertex.azimuthTo(nextVertex);
QGeoCoordinate newVertex = firstVertex.atDistanceAndAzimuth(distance / 2, azimuth);
if (nextIndex == 0) {
appendVertex(newVertex);
} else {
_polygonModel.insert(nextIndex, new QGCQGeoCoordinate(newVertex, this));
_polygonPath.insert(nextIndex, QVariant::fromValue(newVertex));
emit pathChanged();
}
}
void QGCMapPolygon::appendVertex(const QGeoCoordinate& coordinate)
{
_polygonPath.append(QVariant::fromValue(coordinate));
_polygonModel.append(new QGCQGeoCoordinate(coordinate, _newCoordParent));
emit pathChanged();
}
void QGCMapPolygon::_polygonModelDirtyChanged(bool dirty)
{
if (dirty) {
setDirty(true);
}
}
void QGCMapPolygon::removeVertex(int vertexIndex)
{
if (vertexIndex < 0 && vertexIndex > _polygonPath.length() - 1) {
qWarning() << "Call to removePolygonCoordinate with bad vertexIndex:count" << vertexIndex << _polygonPath.length();
return;
}
if (_polygonPath.length() <= 3) {
// Don't allow the user to trash the polygon
return;
}
QObject* coordObj = _polygonModel.removeAt(vertexIndex);
coordObj->deleteLater();
_polygonPath.removeAt(vertexIndex);
emit pathChanged();
}
void QGCMapPolygon::_polygonModelCountChanged(int count)
{
emit countChanged(count);
}