50 lines
1.9 KiB
JavaScript
50 lines
1.9 KiB
JavaScript
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/**
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* Created by bingqixuan on 2018/9/26.
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*/
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'use strict';
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const NavigationControl = function (viewer) {
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this._viewer = viewer;
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this._container = window.document.createElement('div');
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this._container.className = 'cesium-ctrl gvi-ctrl-group';
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this._container.addEventListener('contextmenu', (e) => e.preventDefault());
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this._viewer._element.appendChild(this._container);
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this._zoomInButton = this._createButton('cesium-ctrl-icon cesium-ctrl-zoom-in', '放大', () => this._viewer.camera.zoomIn());
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this._zoomOutButton = this._createButton('cesium-ctrl-icon cesium-ctrl-zoom-out', '缩小', () => this._viewer.camera.zoomOut());
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this._compass = this._createButton('cesium-ctrl-icon cesium-ctrl-compass', 'Reset North', () => this._viewer.camera.setView({
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orientation: {
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heading: 0.0,
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pitch: -Math.PI / 4,
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roll: 0.0
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}
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}));
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this._compassArrow = window.document.createElement('span');
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this._compassArrow.className = 'cesium-ctrl-compass-arrow';
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this._compass.appendChild(this._compassArrow);
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this._event = ()=>{
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const rotate = `rotate(${this._viewer.camera.heading * (180 / Math.PI)}deg)`;
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this._compassArrow.style.transform = rotate;
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};
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this._viewer.scene.postRender.addEventListener(this._event);
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};
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NavigationControl.prototype._createButton = function (className, ariaLabel, fn) {
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let button = window.document.createElement('button');
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button.className = className;
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this._container.appendChild(button);
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button.type = 'button';
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button.setAttribute('aria-label', ariaLabel);
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button.addEventListener('click', fn);
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return button;
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};
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NavigationControl.prototype.destroy = function () {
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this._viewer._element.removeChild(this._container);
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this._viewer.scene.postRender.removeEventListener(this._event);
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};
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module.exports = {
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NavigationControl: NavigationControl
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};
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