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kml.js
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kml.js
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// FIXME http://earth.google.com/kml/1.0 namespace?
// FIXME why does node.getAttribute return an unknown type?
// FIXME serialize arbitrary feature properties
// FIXME don't parse style if extractStyles is false
goog.provide('ol.format.KML');
goog.require('ol');
goog.require('ol.Feature');
goog.require('ol.array');
goog.require('ol.asserts');
goog.require('ol.color');
goog.require('ol.format.Feature');
goog.require('ol.format.XMLFeature');
goog.require('ol.format.XSD');
goog.require('ol.geom.GeometryCollection');
goog.require('ol.geom.GeometryLayout');
goog.require('ol.geom.GeometryType');
goog.require('ol.geom.LineString');
goog.require('ol.geom.LinearRing');
goog.require('ol.geom.MultiLineString');
goog.require('ol.geom.MultiPoint');
goog.require('ol.geom.MultiPolygon');
goog.require('ol.geom.Point');
goog.require('ol.geom.Polygon');
goog.require('ol.math');
goog.require('ol.proj');
goog.require('ol.style.Fill');
goog.require('ol.style.Icon');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');
goog.require('ol.style.Text');
goog.require('ol.xml');
/**
* @classdesc
* Feature format for reading and writing data in the KML format.
*
* Note that the KML format uses the URL() constructor. Older browsers such as IE
* which do not support this will need a URL polyfill to be loaded before use.
*
* @constructor
* @extends {ol.format.XMLFeature}
* @param {olx.format.KMLOptions=} opt_options Options.
* @api stable
*/
ol.format.KML = function(opt_options) {
var options = opt_options ? opt_options : {};
ol.format.XMLFeature.call(this);
if (!ol.format.KML.DEFAULT_STYLE_ARRAY_) {
ol.format.KML.createStyleDefaults_();
}
/**
* @inheritDoc
*/
this.defaultDataProjection = ol.proj.get('EPSG:4326');
/**
* @private
* @type {Array.<ol.style.Style>}
*/
this.defaultStyle_ = options.defaultStyle ?
options.defaultStyle : ol.format.KML.DEFAULT_STYLE_ARRAY_;
/**
* @private
* @type {boolean}
*/
this.extractStyles_ = options.extractStyles !== undefined ?
options.extractStyles : true;
/**
* @private
* @type {boolean}
*/
this.writeStyles_ = options.writeStyles !== undefined ?
options.writeStyles : true;
/**
* @private
* @type {Object.<string, (Array.<ol.style.Style>|string)>}
*/
this.sharedStyles_ = {};
/**
* @private
* @type {boolean}
*/
this.showPointNames_ = options.showPointNames !== undefined ?
options.showPointNames : true;
};
ol.inherits(ol.format.KML, ol.format.XMLFeature);
/**
* @const
* @type {Array.<string>}
* @private
*/
ol.format.KML.EXTENSIONS_ = ['.kml'];
/**
* @const
* @type {Array.<string>}
* @private
*/
ol.format.KML.GX_NAMESPACE_URIS_ = [
'http://www.google.com/kml/ext/2.2'
];
/**
* @const
* @type {Array.<string>}
* @private
*/
ol.format.KML.NAMESPACE_URIS_ = [
null,
'http://earth.google.com/kml/2.0',
'http://earth.google.com/kml/2.1',
'http://earth.google.com/kml/2.2',
'http://www.opengis.net/kml/2.2'
];
/**
* @const
* @type {string}
* @private
*/
ol.format.KML.SCHEMA_LOCATION_ = 'http://www.opengis.net/kml/2.2 ' +
'https://developers.google.com/kml/schema/kml22gx.xsd';
/**
* @return {Array.<ol.style.Style>} Default style.
* @private
*/
ol.format.KML.createStyleDefaults_ = function() {
/**
* @const
* @type {ol.Color}
* @private
*/
ol.format.KML.DEFAULT_COLOR_ = [255, 255, 255, 1];
/**
* @const
* @type {ol.style.Fill}
* @private
*/
ol.format.KML.DEFAULT_FILL_STYLE_ = new ol.style.Fill({
color: ol.format.KML.DEFAULT_COLOR_
});
/**
* @const
* @type {ol.Size}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_ = [20, 2]; // FIXME maybe [8, 32] ?
/**
* @const
* @type {ol.style.Icon.AnchorUnits}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_ =
ol.style.Icon.AnchorUnits.PIXELS;
/**
* @const
* @type {ol.style.Icon.AnchorUnits}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_ =
ol.style.Icon.AnchorUnits.PIXELS;
/**
* @const
* @type {ol.Size}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_ = [64, 64];
/**
* @const
* @type {string}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_ =
'https://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png';
/**
* @const
* @type {number}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_ = 0.5;
/**
* @const
* @type {ol.style.Image}
* @private
*/
ol.format.KML.DEFAULT_IMAGE_STYLE_ = new ol.style.Icon({
anchor: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_,
anchorOrigin: ol.style.Icon.Origin.BOTTOM_LEFT,
anchorXUnits: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_,
anchorYUnits: ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_,
crossOrigin: 'anonymous',
rotation: 0,
scale: ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_,
size: ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_,
src: ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_
});
/**
* @const
* @type {string}
* @private
*/
ol.format.KML.DEFAULT_NO_IMAGE_STYLE_ = 'NO_IMAGE';
/**
* @const
* @type {ol.style.Stroke}
* @private
*/
ol.format.KML.DEFAULT_STROKE_STYLE_ = new ol.style.Stroke({
color: ol.format.KML.DEFAULT_COLOR_,
width: 1
});
/**
* @const
* @type {ol.style.Stroke}
* @private
*/
ol.format.KML.DEFAULT_TEXT_STROKE_STYLE_ = new ol.style.Stroke({
color: [51, 51, 51, 1],
width: 2
});
/**
* @const
* @type {ol.style.Text}
* @private
*/
ol.format.KML.DEFAULT_TEXT_STYLE_ = new ol.style.Text({
font: 'bold 16px Helvetica',
fill: ol.format.KML.DEFAULT_FILL_STYLE_,
stroke: ol.format.KML.DEFAULT_TEXT_STROKE_STYLE_,
scale: 0.8
});
/**
* @const
* @type {ol.style.Style}
* @private
*/
ol.format.KML.DEFAULT_STYLE_ = new ol.style.Style({
fill: ol.format.KML.DEFAULT_FILL_STYLE_,
image: ol.format.KML.DEFAULT_IMAGE_STYLE_,
text: ol.format.KML.DEFAULT_TEXT_STYLE_,
stroke: ol.format.KML.DEFAULT_STROKE_STYLE_,
zIndex: 0
});
/**
* @const
* @type {Array.<ol.style.Style>}
* @private
*/
ol.format.KML.DEFAULT_STYLE_ARRAY_ = [ol.format.KML.DEFAULT_STYLE_];
return ol.format.KML.DEFAULT_STYLE_ARRAY_;
};
/**
* @const
* @type {Object.<string, ol.style.Icon.AnchorUnits>}
* @private
*/
ol.format.KML.ICON_ANCHOR_UNITS_MAP_ = {
'fraction': ol.style.Icon.AnchorUnits.FRACTION,
'pixels': ol.style.Icon.AnchorUnits.PIXELS
};
/**
* @param {ol.style.Style|undefined} foundStyle Style.
* @param {string} name Name.
* @return {ol.style.Style} style Style.
* @private
*/
ol.format.KML.createNameStyleFunction_ = function(foundStyle, name) {
var textStyle = null;
var textOffset = [0, 0];
var textAlign = 'start';
if (foundStyle.getImage()) {
var imageSize = foundStyle.getImage().getImageSize();
if (imageSize === null) {
imageSize = ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_;
}
if (imageSize.length == 2) {
var imageScale = foundStyle.getImage().getScale();
// Offset the label to be centered to the right of the icon, if there is
// one.
textOffset[0] = imageScale * imageSize[0] / 2;
textOffset[1] = -imageScale * imageSize[1] / 2;
textAlign = 'left';
}
}
if (foundStyle.getText() !== null) {
// clone the text style, customizing it with name, alignments and offset.
// Note that kml does not support many text options that OpenLayers does (rotation, textBaseline).
var foundText = foundStyle.getText();
textStyle = foundText.clone();
textStyle.setFont(foundText.getFont() || ol.format.KML.DEFAULT_TEXT_STYLE_.getFont());
textStyle.setScale(foundText.getScale() || ol.format.KML.DEFAULT_TEXT_STYLE_.getScale());
textStyle.setFill(foundText.getFill() || ol.format.KML.DEFAULT_TEXT_STYLE_.getFill());
textStyle.setStroke(foundText.getStroke() || ol.format.KML.DEFAULT_TEXT_STROKE_STYLE_);
} else {
textStyle = ol.format.KML.DEFAULT_TEXT_STYLE_.clone();
}
textStyle.setText(name);
textStyle.setOffsetX(textOffset[0]);
textStyle.setOffsetY(textOffset[1]);
textStyle.setTextAlign(textAlign);
var nameStyle = new ol.style.Style({
text: textStyle
});
return nameStyle;
};
/**
* @param {Array.<ol.style.Style>|undefined} style Style.
* @param {string} styleUrl Style URL.
* @param {Array.<ol.style.Style>} defaultStyle Default style.
* @param {Object.<string, (Array.<ol.style.Style>|string)>} sharedStyles Shared
* styles.
* @param {boolean|undefined} showPointNames true to show names for point
* placemarks.
* @return {ol.FeatureStyleFunction} Feature style function.
* @private
*/
ol.format.KML.createFeatureStyleFunction_ = function(style, styleUrl,
defaultStyle, sharedStyles, showPointNames) {
return (
/**
* @param {number} resolution Resolution.
* @return {Array.<ol.style.Style>} Style.
* @this {ol.Feature}
*/
function(resolution) {
var drawName = showPointNames;
/** @type {ol.style.Style|undefined} */
var nameStyle;
var name = '';
if (drawName) {
if (this.getGeometry()) {
drawName = (this.getGeometry().getType() ===
ol.geom.GeometryType.POINT);
}
}
if (drawName) {
name = /** @type {string} */ (this.get('name'));
drawName = drawName && name;
}
if (style) {
if (drawName) {
nameStyle = ol.format.KML.createNameStyleFunction_(style[0],
name);
return style.concat(nameStyle);
}
return style;
}
if (styleUrl) {
var foundStyle = ol.format.KML.findStyle_(styleUrl, defaultStyle,
sharedStyles);
if (drawName) {
nameStyle = ol.format.KML.createNameStyleFunction_(foundStyle[0],
name);
return foundStyle.concat(nameStyle);
}
return foundStyle;
}
if (drawName) {
nameStyle = ol.format.KML.createNameStyleFunction_(defaultStyle[0],
name);
return defaultStyle.concat(nameStyle);
}
return defaultStyle;
});
};
/**
* @param {Array.<ol.style.Style>|string|undefined} styleValue Style value.
* @param {Array.<ol.style.Style>} defaultStyle Default style.
* @param {Object.<string, (Array.<ol.style.Style>|string)>} sharedStyles
* Shared styles.
* @return {Array.<ol.style.Style>} Style.
* @private
*/
ol.format.KML.findStyle_ = function(styleValue, defaultStyle, sharedStyles) {
if (Array.isArray(styleValue)) {
return styleValue;
} else if (typeof styleValue === 'string') {
// KML files in the wild occasionally forget the leading `#` on styleUrls
// defined in the same document. Add a leading `#` if it enables to find
// a style.
if (!(styleValue in sharedStyles) && ('#' + styleValue in sharedStyles)) {
styleValue = '#' + styleValue;
}
return ol.format.KML.findStyle_(
sharedStyles[styleValue], defaultStyle, sharedStyles);
} else {
return defaultStyle;
}
};
/**
* @param {Node} node Node.
* @private
* @return {ol.Color|undefined} Color.
*/
ol.format.KML.readColor_ = function(node) {
var s = ol.xml.getAllTextContent(node, false);
// The KML specification states that colors should not include a leading `#`
// but we tolerate them.
var m = /^\s*#?\s*([0-9A-Fa-f]{8})\s*$/.exec(s);
if (m) {
var hexColor = m[1];
return [
parseInt(hexColor.substr(6, 2), 16),
parseInt(hexColor.substr(4, 2), 16),
parseInt(hexColor.substr(2, 2), 16),
parseInt(hexColor.substr(0, 2), 16) / 255
];
} else {
return undefined;
}
};
/**
* @param {Node} node Node.
* @private
* @return {Array.<number>|undefined} Flat coordinates.
*/
ol.format.KML.readFlatCoordinates_ = function(node) {
var s = ol.xml.getAllTextContent(node, false);
var flatCoordinates = [];
// The KML specification states that coordinate tuples should not include
// spaces, but we tolerate them.
var re =
/^\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?)\s*,\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?)(?:\s*,\s*([+\-]?\d*\.?\d+(?:e[+\-]?\d+)?))?\s*/i;
var m;
while ((m = re.exec(s))) {
var x = parseFloat(m[1]);
var y = parseFloat(m[2]);
var z = m[3] ? parseFloat(m[3]) : 0;
flatCoordinates.push(x, y, z);
s = s.substr(m[0].length);
}
if (s !== '') {
return undefined;
}
return flatCoordinates;
};
/**
* @param {Node} node Node.
* @private
* @return {string} URI.
*/
ol.format.KML.readURI_ = function(node) {
var s = ol.xml.getAllTextContent(node, false).trim();
if (node.baseURI) {
var url = new URL(s, node.baseURI);
return url.href;
} else {
return s;
}
};
/**
* @param {Node} node Node.
* @private
* @return {ol.KMLVec2_} Vec2.
*/
ol.format.KML.readVec2_ = function(node) {
var xunits = node.getAttribute('xunits');
var yunits = node.getAttribute('yunits');
return {
x: parseFloat(node.getAttribute('x')),
xunits: ol.format.KML.ICON_ANCHOR_UNITS_MAP_[xunits],
y: parseFloat(node.getAttribute('y')),
yunits: ol.format.KML.ICON_ANCHOR_UNITS_MAP_[yunits]
};
};
/**
* @param {Node} node Node.
* @private
* @return {number|undefined} Scale.
*/
ol.format.KML.readScale_ = function(node) {
return ol.format.XSD.readDecimal(node);
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {Array.<ol.style.Style>|string|undefined} StyleMap.
*/
ol.format.KML.readStyleMapValue_ = function(node, objectStack) {
return ol.xml.pushParseAndPop(undefined,
ol.format.KML.STYLE_MAP_PARSERS_, node, objectStack);
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
*/
ol.format.KML.IconStyleParser_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be an ELEMENT');
ol.DEBUG && console.assert(node.localName == 'IconStyle',
'localName should be IconStyle');
// FIXME refreshMode
// FIXME refreshInterval
// FIXME viewRefreshTime
// FIXME viewBoundScale
// FIXME viewFormat
// FIXME httpQuery
var object = ol.xml.pushParseAndPop(
{}, ol.format.KML.ICON_STYLE_PARSERS_, node, objectStack);
if (!object) {
return;
}
var styleObject = /** @type {Object} */ (objectStack[objectStack.length - 1]);
var IconObject = 'Icon' in object ? object['Icon'] : {};
var drawIcon = (!('Icon' in object) || Object.keys(IconObject).length > 0);
var src;
var href = /** @type {string|undefined} */
(IconObject['href']);
if (href) {
src = href;
} else if (drawIcon) {
src = ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_;
}
var anchor, anchorXUnits, anchorYUnits;
var hotSpot = /** @type {ol.KMLVec2_|undefined} */
(object['hotSpot']);
if (hotSpot) {
anchor = [hotSpot.x, hotSpot.y];
anchorXUnits = hotSpot.xunits;
anchorYUnits = hotSpot.yunits;
} else if (src === ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_) {
anchor = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_;
anchorXUnits = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_;
anchorYUnits = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_;
} else if (/^http:\/\/maps\.(?:google|gstatic)\.com\//.test(src)) {
anchor = [0.5, 0];
anchorXUnits = ol.style.Icon.AnchorUnits.FRACTION;
anchorYUnits = ol.style.Icon.AnchorUnits.FRACTION;
}
var offset;
var x = /** @type {number|undefined} */
(IconObject['x']);
var y = /** @type {number|undefined} */
(IconObject['y']);
if (x !== undefined && y !== undefined) {
offset = [x, y];
}
var size;
var w = /** @type {number|undefined} */
(IconObject['w']);
var h = /** @type {number|undefined} */
(IconObject['h']);
if (w !== undefined && h !== undefined) {
size = [w, h];
}
var rotation;
var heading = /** @type {number} */
(object['heading']);
if (heading !== undefined) {
rotation = ol.math.toRadians(heading);
}
var scale = /** @type {number|undefined} */
(object['scale']);
if (drawIcon) {
if (src == ol.format.KML.DEFAULT_IMAGE_STYLE_SRC_) {
size = ol.format.KML.DEFAULT_IMAGE_STYLE_SIZE_;
if (scale === undefined) {
scale = ol.format.KML.DEFAULT_IMAGE_SCALE_MULTIPLIER_;
}
}
var imageStyle = new ol.style.Icon({
anchor: anchor,
anchorOrigin: ol.style.Icon.Origin.BOTTOM_LEFT,
anchorXUnits: anchorXUnits,
anchorYUnits: anchorYUnits,
crossOrigin: 'anonymous', // FIXME should this be configurable?
offset: offset,
offsetOrigin: ol.style.Icon.Origin.BOTTOM_LEFT,
rotation: rotation,
scale: scale,
size: size,
src: src
});
styleObject['imageStyle'] = imageStyle;
} else {
// handle the case when we explicitly want to draw no icon.
styleObject['imageStyle'] = ol.format.KML.DEFAULT_NO_IMAGE_STYLE_;
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
*/
ol.format.KML.LabelStyleParser_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'LabelStyle',
'localName should be LabelStyle');
// FIXME colorMode
var object = ol.xml.pushParseAndPop(
{}, ol.format.KML.LABEL_STYLE_PARSERS_, node, objectStack);
if (!object) {
return;
}
var styleObject = objectStack[objectStack.length - 1];
var textStyle = new ol.style.Text({
fill: new ol.style.Fill({
color: /** @type {ol.Color} */
('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_)
}),
scale: /** @type {number|undefined} */
(object['scale'])
});
styleObject['textStyle'] = textStyle;
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
*/
ol.format.KML.LineStyleParser_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'LineStyle',
'localName should be LineStyle');
// FIXME colorMode
// FIXME gx:outerColor
// FIXME gx:outerWidth
// FIXME gx:physicalWidth
// FIXME gx:labelVisibility
var object = ol.xml.pushParseAndPop(
{}, ol.format.KML.LINE_STYLE_PARSERS_, node, objectStack);
if (!object) {
return;
}
var styleObject = objectStack[objectStack.length - 1];
var strokeStyle = new ol.style.Stroke({
color: /** @type {ol.Color} */
('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_),
width: /** @type {number} */ ('width' in object ? object['width'] : 1)
});
styleObject['strokeStyle'] = strokeStyle;
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
*/
ol.format.KML.PolyStyleParser_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'PolyStyle',
'localName should be PolyStyle');
// FIXME colorMode
var object = ol.xml.pushParseAndPop(
{}, ol.format.KML.POLY_STYLE_PARSERS_, node, objectStack);
if (!object) {
return;
}
var styleObject = objectStack[objectStack.length - 1];
var fillStyle = new ol.style.Fill({
color: /** @type {ol.Color} */
('color' in object ? object['color'] : ol.format.KML.DEFAULT_COLOR_)
});
styleObject['fillStyle'] = fillStyle;
var fill = /** @type {boolean|undefined} */ (object['fill']);
if (fill !== undefined) {
styleObject['fill'] = fill;
}
var outline =
/** @type {boolean|undefined} */ (object['outline']);
if (outline !== undefined) {
styleObject['outline'] = outline;
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {Array.<number>} LinearRing flat coordinates.
*/
ol.format.KML.readFlatLinearRing_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'LinearRing',
'localName should be LinearRing');
return ol.xml.pushParseAndPop(null,
ol.format.KML.FLAT_LINEAR_RING_PARSERS_, node, objectStack);
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
*/
ol.format.KML.gxCoordParser_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(ol.array.includes(
ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
'namespaceURI of the node should be known to the KML parser');
ol.DEBUG && console.assert(node.localName == 'coord', 'localName should be coord');
var gxTrackObject = /** @type {ol.KMLGxTrackObject_} */
(objectStack[objectStack.length - 1]);
var flatCoordinates = gxTrackObject.flatCoordinates;
var s = ol.xml.getAllTextContent(node, false);
var re =
/^\s*([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s+([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s+([+\-]?\d+(?:\.\d*)?(?:e[+\-]?\d*)?)\s*$/i;
var m = re.exec(s);
if (m) {
var x = parseFloat(m[1]);
var y = parseFloat(m[2]);
var z = parseFloat(m[3]);
flatCoordinates.push(x, y, z, 0);
} else {
flatCoordinates.push(0, 0, 0, 0);
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {ol.geom.MultiLineString|undefined} MultiLineString.
*/
ol.format.KML.readGxMultiTrack_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(ol.array.includes(
ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
'namespaceURI of the node should be known to the KML parser');
ol.DEBUG && console.assert(node.localName == 'MultiTrack',
'localName should be MultiTrack');
var lineStrings = ol.xml.pushParseAndPop([],
ol.format.KML.GX_MULTITRACK_GEOMETRY_PARSERS_, node, objectStack);
if (!lineStrings) {
return undefined;
}
var multiLineString = new ol.geom.MultiLineString(null);
multiLineString.setLineStrings(lineStrings);
return multiLineString;
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {ol.geom.LineString|undefined} LineString.
*/
ol.format.KML.readGxTrack_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(ol.array.includes(
ol.format.KML.GX_NAMESPACE_URIS_, node.namespaceURI),
'namespaceURI of the node should be known to the KML parser');
ol.DEBUG && console.assert(node.localName == 'Track', 'localName should be Track');
var gxTrackObject = ol.xml.pushParseAndPop(
/** @type {ol.KMLGxTrackObject_} */ ({
flatCoordinates: [],
whens: []
}), ol.format.KML.GX_TRACK_PARSERS_, node, objectStack);
if (!gxTrackObject) {
return undefined;
}
var flatCoordinates = gxTrackObject.flatCoordinates;
var whens = gxTrackObject.whens;
ol.DEBUG && console.assert(flatCoordinates.length / 4 == whens.length,
'the length of the flatCoordinates array divided by 4 should be the ' +
'length of the whens array');
var i, ii;
for (i = 0, ii = Math.min(flatCoordinates.length, whens.length); i < ii;
++i) {
flatCoordinates[4 * i + 3] = whens[i];
}
var lineString = new ol.geom.LineString(null);
lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZM, flatCoordinates);
return lineString;
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {Object} Icon object.
*/
ol.format.KML.readIcon_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'Icon', 'localName should be Icon');
var iconObject = ol.xml.pushParseAndPop(
{}, ol.format.KML.ICON_PARSERS_, node, objectStack);
if (iconObject) {
return iconObject;
} else {
return null;
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {Array.<number>} Flat coordinates.
*/
ol.format.KML.readFlatCoordinatesFromNode_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
return ol.xml.pushParseAndPop(null,
ol.format.KML.GEOMETRY_FLAT_COORDINATES_PARSERS_, node, objectStack);
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {ol.geom.LineString|undefined} LineString.
*/
ol.format.KML.readLineString_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'LineString',
'localName should be LineString');
var properties = ol.xml.pushParseAndPop({},
ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
objectStack);
var flatCoordinates =
ol.format.KML.readFlatCoordinatesFromNode_(node, objectStack);
if (flatCoordinates) {
var lineString = new ol.geom.LineString(null);
lineString.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates);
lineString.setProperties(properties);
return lineString;
} else {
return undefined;
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {ol.geom.Polygon|undefined} Polygon.
*/
ol.format.KML.readLinearRing_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'LinearRing',
'localName should be LinearRing');
var properties = ol.xml.pushParseAndPop({},
ol.format.KML.EXTRUDE_AND_ALTITUDE_MODE_PARSERS_, node,
objectStack);
var flatCoordinates =
ol.format.KML.readFlatCoordinatesFromNode_(node, objectStack);
if (flatCoordinates) {
var polygon = new ol.geom.Polygon(null);
polygon.setFlatCoordinates(ol.geom.GeometryLayout.XYZ, flatCoordinates,
[flatCoordinates.length]);
polygon.setProperties(properties);
return polygon;
} else {
return undefined;
}
};
/**
* @param {Node} node Node.
* @param {Array.<*>} objectStack Object stack.
* @private
* @return {ol.geom.Geometry} Geometry.
*/
ol.format.KML.readMultiGeometry_ = function(node, objectStack) {
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
ol.DEBUG && console.assert(node.localName == 'MultiGeometry',
'localName should be MultiGeometry');
var geometries = ol.xml.pushParseAndPop([],
ol.format.KML.MULTI_GEOMETRY_PARSERS_, node, objectStack);
if (!geometries) {
return null;
}
if (geometries.length === 0) {
return new ol.geom.GeometryCollection(geometries);
}
/** @type {ol.geom.Geometry} */
var multiGeometry;
var homogeneous = true;
var type = geometries[0].getType();
var geometry, i, ii;
for (i = 1, ii = geometries.length; i < ii; ++i) {
geometry = geometries[i];
if (geometry.getType() != type) {
homogeneous = false;
break;
}
}
if (homogeneous) {
var layout;
var flatCoordinates;
if (type == ol.geom.GeometryType.POINT) {
var point = geometries[0];
layout = point.getLayout();
flatCoordinates = point.getFlatCoordinates();
for (i = 1, ii = geometries.length; i < ii; ++i) {
geometry = geometries[i];
ol.DEBUG && console.assert(geometry.getLayout() == layout,
'geometry layout should be consistent');
ol.array.extend(flatCoordinates, geometry.getFlatCoordinates());
}
multiGeometry = new ol.geom.MultiPoint(null);
multiGeometry.setFlatCoordinates(layout, flatCoordinates);
ol.format.KML.setCommonGeometryProperties_(multiGeometry, geometries);
} else if (type == ol.geom.GeometryType.LINE_STRING) {
multiGeometry = new ol.geom.MultiLineString(null);
multiGeometry.setLineStrings(geometries);
ol.format.KML.setCommonGeometryProperties_(multiGeometry, geometries);
} else if (type == ol.geom.GeometryType.POLYGON) {
multiGeometry = new ol.geom.MultiPolygon(null);
multiGeometry.setPolygons(geometries);
ol.format.KML.setCommonGeometryProperties_(multiGeometry, geometries);
} else if (type == ol.geom.GeometryType.GEOMETRY_COLLECTION) {
multiGeometry = new ol.geom.GeometryCollection(geometries);
} else {
ol.asserts.assert(false, 37); // Unknown geometry type found
}
} else {
multiGeometry = new ol.geom.GeometryCollection(geometries);