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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 "KML.h"
#include <QDomDocument>
#include <QStringList>
const QString Kml::_version("version=\"1.0\"");
const QString Kml::_encoding("encoding=\"UTF-8\"");
const QString Kml::_opengis("http://www.opengis.net/kml/2.2");
const QString Kml::_qgckml("QGC KML");
Kml::Kml()
{
//create header
createHeader();
//name
createTextElement(_docEle, "name", _qgckml);
//open
createTextElement(_docEle, "open", "1");
//create style
createStyles();
}
void Kml::points(const QStringList& points)
{
//create placemark
QDomElement placemark = _domDocument.createElement("Placemark");
_docEle.appendChild(placemark);
createTextElement(placemark, "styleUrl", "yellowLineGreenPoly");
createTextElement(placemark, "name", "Absolute");
createTextElement(placemark, "visibility", "0");
createTextElement(placemark, "description", "Transparent purple line");
QStringList latLonAlt = points[0].split(",");
QStringList lookAtList({latLonAlt[0], latLonAlt[1], "0" \
, "-100", "45", "2500"});
createLookAt(placemark, lookAtList);
//Add linestring
QDomElement lineString = _domDocument.createElement("LineString");
placemark.appendChild(lineString);
//extruder
createTextElement(lineString, "extruder", "1");
createTextElement(lineString, "tessellate", "1");
createTextElement(lineString, "altitudeMode", "absolute");
QString coordinates;
for(const auto& point : points) {
coordinates += point + "\n";
}
createTextElement(lineString, "coordinates", coordinates);
}
void Kml::save(QDomDocument& document)
{
document = _domDocument;
}
void Kml::createHeader()
{
QDomProcessingInstruction header = _domDocument.createProcessingInstruction("xml", _version + " " + _encoding);
_domDocument.appendChild(header);
QDomElement kml = _domDocument.createElement("kml");
kml.setAttribute("xmlns", _opengis);
_docEle = _domDocument.createElement("Document");
kml.appendChild(_docEle);
_domDocument.appendChild(kml);
}
void Kml::createStyles()
{
QDomElement style = _domDocument.createElement("Style");
style.setAttribute("id", "yellowLineGreenPoly");
createStyleLine(style, "7f00ffff", "4", "7f00ff00");
_docEle.appendChild(style);
}
void Kml::createLookAt(QDomElement& placemark, const QStringList &lookAtList)
{
QDomElement lookAt = _domDocument.createElement("LookAt");
placemark.appendChild(lookAt);
createTextElement(lookAt, "longitude", lookAtList[0]);
createTextElement(lookAt, "latitude", lookAtList[1]);
createTextElement(lookAt, "altitude", lookAtList[2]);
createTextElement(lookAt, "heading", lookAtList[3]);
createTextElement(lookAt, "tilt", lookAtList[4]);
createTextElement(lookAt, "range", lookAtList[5]);
}
void Kml::createTextElement(QDomElement& domEle, const QString& elementName, const QString& textElement)
{
// <elementName>textElement</elementName>
auto element = _domDocument.createElement(elementName);
element.appendChild(_domDocument.createTextNode(textElement));
domEle.appendChild(element);
}
void Kml::createStyleLine(QDomElement& domEle, const QString& lineColor, const QString& lineWidth, const QString& polyColor)
{
/*
<LineStyle>
<color>7f00ffff</color>
<width>4</width>
</LineStyle>
<PolyStyle>
<color>7f00ff00</color>
</PolyStyle>
*/
auto lineStyle = _domDocument.createElement("LineStyle");
auto polyStyle = _domDocument.createElement("PolyStyle");
domEle.appendChild(lineStyle);
domEle.appendChild(polyStyle);
createTextElement(lineStyle, "color", lineColor);
createTextElement(lineStyle, "width", lineWidth);
createTextElement(polyStyle, "color", polyColor);
}
Kml::~Kml()
{
}