ol-ext-datatable/featureanimation/Drop.js

Datatables version

/*
	Copyright (c) 2016 Jean-Marc VIGLINO, 
	released under the CeCILL license (http://www.cecill.info/).
	
*/

import ol from 'ol'
import ol_featureAnimation from './FeatureAnimation'

/** Drop animation: drop a feature on the map
 * @constructor
 * @extends {ol_featureAnimation}
 * @param {ol_featureAnimationDropOptions} options
 *  @param {Number} options.speed speed of the feature if 0 the duration parameter will be used instead, default 0
 *  @param {Number} options.side top or bottom, default top
 */
var ol_featureAnimation_Drop = function(options)
{	options = options || {};
	this.speed_ = options.speed || 0;
	ol_featureAnimation.call(this, options);
	this.side_ = options.side || 'top';
}
ol.inherits(ol_featureAnimation_Drop, ol_featureAnimation);

/** Animate
* @param {ol_featureAnimationEvent} e
*/
ol_featureAnimation_Drop.prototype.animate = function (e)
{	// First time > calculate duration / speed
	if (!e.time) 
	{	var angle = e.frameState.viewState.rotation;
		var s = e.frameState.size[1] * e.frameState.viewState.resolution;
		if (this.side_!='top') s *= -1;
		this.dx = -Math.sin(angle)*s;
		this.dy = Math.cos(angle)*s;
		if (this.speed_) 
		{	this.duration_ = s/this.speed_/e.frameState.viewState.resolution;
		}
	}
	// Animate
	var flashGeom = e.geom.clone();
	flashGeom.translate(
		this.dx*(1-this.easing_(e.elapsed)),  
		this.dy*(1-this.easing_(e.elapsed))
	);
	this.drawGeom_(e, flashGeom, e.geom);
	
	return (e.time <= this.duration_);
}

export default ol_featureAnimation_Drop