cesium
Version:
CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.
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JavaScript
import defined from '../../Core/defined.js';
import destroyObject from '../../Core/destroyObject.js';
import DeveloperError from '../../Core/DeveloperError.js';
import FeatureDetection from '../../Core/FeatureDetection.js';
import knockout from '../../ThirdParty/knockout.js';
import getElement from '../getElement.js';
import ProjectionPickerViewModel from './ProjectionPickerViewModel.js';
var perspectivePath = 'M 28.15625,10.4375 9.125,13.21875 13.75,43.25 41.75,55.09375 50.8125,37 54.5,11.9375 z m 0.125,3 19.976451,0.394265 L 43.03125,16.875 22.6875,14.28125 z M 50.971746,15.705477 47.90625,36.03125 42.53125,46 44.84375,19.3125 z M 12.625,16.03125 l 29.15625,3.6875 -2.65625,31 L 16.4375,41.125 z';
var orthographicPath = 'm 31.560594,6.5254438 -20.75,12.4687502 0.1875,24.5625 22.28125,11.8125 19.5,-12 0.65625,-0.375 0,-0.75 0.0312,-23.21875 z m 0.0625,3.125 16.65625,9.5000002 -16.125,10.28125 -17.34375,-9.71875 z m 18.96875,11.1875002 0.15625,20.65625 -17.46875,10.59375 0.15625,-20.28125 z m -37.0625,1.25 17.21875,9.625 -0.15625,19.21875 -16.9375,-9 z';
/**
* The ProjectionPicker is a single button widget for switching between perspective and orthographic projections.
*
* @alias ProjectionPicker
* @constructor
*
* @param {Element|String} container The DOM element or ID that will contain the widget.
* @param {Scene} scene The Scene instance to use.
*
* @exception {DeveloperError} Element with id "container" does not exist in the document.
*
* @example
* // In HTML head, include a link to the ProjectionPicker.css stylesheet,
* // and in the body, include: <div id="projectionPickerContainer"></div>
* // Note: This code assumes you already have a Scene instance.
*
* var projectionPicker = new Cesium.ProjectionPicker('projectionPickerContainer', scene);
*/
function ProjectionPicker(container, scene) {
//>>includeStart('debug', pragmas.debug);
if (!defined(container)) {
throw new DeveloperError('container is required.');
}
if (!defined(scene)) {
throw new DeveloperError('scene is required.');
}
//>>includeEnd('debug');
container = getElement(container);
var viewModel = new ProjectionPickerViewModel(scene);
viewModel._perspectivePath = perspectivePath;
viewModel._orthographicPath = orthographicPath;
var wrapper = document.createElement('span');
wrapper.className = 'cesium-projectionPicker-wrapper cesium-toolbar-button';
container.appendChild(wrapper);
var button = document.createElement('button');
button.type = 'button';
button.className = 'cesium-button cesium-toolbar-button';
button.setAttribute('data-bind', '\
css: { "cesium-projectionPicker-buttonPerspective": !_orthographic,\
"cesium-projectionPicker-buttonOrthographic": _orthographic,\
"cesium-button-disabled" : sceneMode === _sceneMode.SCENE2D || _flightInProgress, \
"cesium-projectionPicker-selected": dropDownVisible },\
attr: { title: selectedTooltip },\
click: toggleDropDown');
button.innerHTML = '\
<!-- ko cesiumSvgPath: { path: _perspectivePath, width: 64, height: 64, css: "cesium-projectionPicker-iconPerspective" } --><!-- /ko -->\
<!-- ko cesiumSvgPath: { path: _orthographicPath, width: 64, height: 64, css: "cesium-projectionPicker-iconOrthographic" } --><!-- /ko -->';
wrapper.appendChild(button);
var perspectiveButton = document.createElement('button');
perspectiveButton.type = 'button';
perspectiveButton.className = 'cesium-button cesium-toolbar-button cesium-projectionPicker-dropDown-icon';
perspectiveButton.setAttribute('data-bind', '\
css: { "cesium-projectionPicker-visible" : (dropDownVisible && _orthographic),\
"cesium-projectionPicker-none" : !_orthographic,\
"cesium-projectionPicker-hidden" : !dropDownVisible },\
attr: { title: tooltipPerspective },\
click: switchToPerspective,\
cesiumSvgPath: { path: _perspectivePath, width: 64, height: 64 }');
wrapper.appendChild(perspectiveButton);
var orthographicButton = document.createElement('button');
orthographicButton.type = 'button';
orthographicButton.className = 'cesium-button cesium-toolbar-button cesium-projectionPicker-dropDown-icon';
orthographicButton.setAttribute('data-bind', '\
css: { "cesium-projectionPicker-visible" : (dropDownVisible && !_orthographic),\
"cesium-projectionPicker-none" : _orthographic,\
"cesium-projectionPicker-hidden" : !dropDownVisible},\
attr: { title: tooltipOrthographic },\
click: switchToOrthographic,\
cesiumSvgPath: { path: _orthographicPath, width: 64, height: 64 }');
wrapper.appendChild(orthographicButton);
knockout.applyBindings(viewModel, wrapper);
this._viewModel = viewModel;
this._container = container;
this._wrapper = wrapper;
this._closeDropDown = function(e) {
if (!wrapper.contains(e.target)) {
viewModel.dropDownVisible = false;
}
};
if (FeatureDetection.supportsPointerEvents()) {
document.addEventListener('pointerdown', this._closeDropDown, true);
} else {
document.addEventListener('mousedown', this._closeDropDown, true);
document.addEventListener('touchstart', this._closeDropDown, true);
}
}
Object.defineProperties(ProjectionPicker.prototype, {
/**
* Gets the parent container.
* @memberof ProjectionPicker.prototype
*
* @type {Element}
*/
container : {
get : function() {
return this._container;
}
},
/**
* Gets the view model.
* @memberof ProjectionPicker.prototype
*
* @type {ProjectionPickerViewModel}
*/
viewModel : {
get : function() {
return this._viewModel;
}
}
});
/**
* @returns {Boolean} true if the object has been destroyed, false otherwise.
*/
ProjectionPicker.prototype.isDestroyed = function() {
return false;
};
/**
* Destroys the widget. Should be called if permanently
* removing the widget from layout.
*/
ProjectionPicker.prototype.destroy = function() {
this._viewModel.destroy();
if (FeatureDetection.supportsPointerEvents()) {
document.removeEventListener('pointerdown', this._closeDropDown, true);
} else {
document.removeEventListener('mousedown', this._closeDropDown, true);
document.removeEventListener('touchstart', this._closeDropDown, true);
}
knockout.cleanNode(this._wrapper);
this._container.removeChild(this._wrapper);
return destroyObject(this);
};
export default ProjectionPicker;