52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
/*
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Copyright (c) 2016 Jean-Marc VIGLINO,
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released under the CeCILL license (http://www.cecill.info/).
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*/
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import ol_featureAnimation from './FeatureAnimation.js'
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/** Drop animation: drop a feature on the map
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* @constructor
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* @extends {ol_featureAnimation}
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* @param {ol_featureAnimationDropOptions} options
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* @param {Number} options.speed speed of the feature if 0 the duration parameter will be used instead, default 0
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* @param {Number} options.side top or bottom, default top
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*/
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var ol_featureAnimation_Drop = class olfeatureAnimationDrop extends ol_featureAnimation {
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constructor(options) {
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options = options || {};
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super(options);
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this.speed_ = options.speed || 0;
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this.side_ = options.side || 'top';
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}
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/** Animate
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* @param {ol_featureAnimationEvent} e
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*/
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animate(e) {
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if (!e.time) {
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var angle = e.frameState.viewState.rotation;
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var s = e.frameState.size[1] * e.frameState.viewState.resolution;
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if (this.side_ != 'top') s *= -1;
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this.dx = -Math.sin(angle) * s;
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this.dy = Math.cos(angle) * s;
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if (this.speed_) {
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this.duration_ = s / this.speed_ / e.frameState.viewState.resolution;
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}
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}
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// Animate
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var flashGeom = e.geom.clone();
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flashGeom.translate(
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this.dx * (1 - this.easing_(e.elapsed)),
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this.dy * (1 - this.easing_(e.elapsed))
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);
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this.drawGeom_(e, flashGeom, e.geom);
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return (e.time <= this.duration_);
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}
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}
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export default ol_featureAnimation_Drop
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