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<a href="../../index.html">all files</a> / <a href="index.html">ol/render/</a> renderfeature.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">goog.provide('ol.render.Feature');
goog.require('goog.asserts');
goog.require('goog.functions');
goog.require('ol.extent');
goog.require('ol.geom.GeometryType');
/**
* Lightweight, read-only, {@link ol.Feature} and {@link ol.geom.Geometry} like
* structure, optimized for rendering and styling. Geometry access through the
* API is limited to getting the type and extent of the geometry.
*
* @constructor
* @param {ol.geom.GeometryType} type Geometry type.
* @param {Array.<number>} flatCoordinates Flat coordinates. These always need
* to be right-handed for polygons.
* @param {Array.<number>|Array.<Array.<number>>} ends Ends or Endss.
* @param {Object.<string, *>} properties Properties.
*/
ol.render.Feature = function(type, flatCoordinates, ends, properties) {
/**
* @private
* @type {ol.Extent|undefined}
*/
this.extent_;
goog.asserts.assert(type === ol.geom.GeometryType.POINT ||
type === ol.geom.GeometryType.MULTI_POINT ||
type === ol.geom.GeometryType.LINE_STRING ||
type === ol.geom.GeometryType.MULTI_LINE_STRING ||
type === ol.geom.GeometryType.POLYGON,
'Need a Point, MultiPoint, LineString, MultiLineString or Polygon type');
/**
* @private
* @type {ol.geom.GeometryType}
*/
this.type_ = type;
/**
* @private
* @type {Array.<number>}
*/
this.flatCoordinates_ = flatCoordinates;
/**
* @private
* @type {Array.<number>|Array.<Array.<number>>}
*/
this.ends_ = ends;
/**
* @private
* @type {Object.<string, *>}
*/
this.properties_ = properties;
};
/**
* Get a feature property by its key.
* @param {string} key Key
* @return {*} Value for the requested key.
* @api
*/
ol.render.Feature.prototype.get = function(key) {
return this.properties_[key];
};
/**
* @return {Array.<number>|Array.<Array.<number>>} Ends or endss.
*/
ol.render.Feature.prototype.getEnds = function() {
return this.ends_;
};
/**
* Get the extent of this feature's geometry.
* @return {ol.Extent} Extent.
* @api
*/
ol.render.Feature.prototype.getExtent = function() {
if (!this.extent_) {
this.extent_ = this.type_ === ol.geom.GeometryType.POINT ?
ol.extent.createOrUpdateFromCoordinate(this.flatCoordinates_) :
ol.extent.createOrUpdateFromFlatCoordinates(
this.flatCoordinates_, 0, this.flatCoordinates_.length, 2);
}
return this.extent_;
};
/**
* @return {Array.<number>} Flat coordinates.
*/
ol.render.Feature.prototype.getFlatCoordinates =
ol.render.Feature.prototype.getOrientedFlatCoordinates = function() {
return this.flatCoordinates_;
};
/**
* Get the feature for working with its geometry.
* @return {ol.render.Feature} Feature.
* @api
*/
ol.render.Feature.prototype.getGeometry = function() {
return this;
};
/**
* Get the feature properties.
* @return {Object.<string, *>} Feature properties.
* @api
*/
ol.render.Feature.prototype.getProperties = function() {
return this.properties_;
};
/**
* Get the feature for working with its geometry.
* @return {ol.render.Feature} Feature.
*/
ol.render.Feature.prototype.getSimplifiedGeometry =
ol.render.Feature.prototype.getGeometry;
/**
* @return {number} Stride.
*/
ol.render.Feature.prototype.getStride = goog.functions.constant(2);
/**
* @return {undefined}
*/
ol.render.Feature.prototype.getStyleFunction = ol.nullFunction;
/**
* Get the type of this feature's geometry.
* @return {ol.geom.GeometryType} Geometry type.
* @api
*/
ol.render.Feature.prototype.getType = function() {
return this.type_;
};
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